OECD SIDSACETANILIDEFOREWORDINTRODUCTIONACETANILIDECAS N°: 103-84-4

UNEP PUBLICATIONSOECD SIDSACETANILIDESIDS Initial Assessment Reportfor 13th SIAM
(Bern, 6-9 November 2001)

Chemical Name :Acetanilide

CAS No :103-84-4

Sponsor Country :Republic of Korea

National SIDS Contact Point in Sponsor Country :Dr. Moon-Soon LEE
National Institute of Environmental Research
Gyeongseo-dong, Seo-gu, Incheon, 404-170, Korea
Tel : 82-32-560-7113
Fax : 82-32-568-2037
E-mail : : mslee416@me.go.kr

History :This chemical was assigned to Korea in 1999 and first discussed at SIAM10, March 2000.
At the meeting, it was agreed that results of a repeated dose toxicity study with thereproduction/developmental toxicity screening test, acute toxicity to algae and daphnia werenecessary for the finalization. Korea performed those toxicity tests and a few more tests forthe clarification of the initial assessment. The SIAR was then revised.

Testing :No testing ( )Testing ( x) :Melting point, Boiling point, Partition coefficient, Stability in water,
Toxicity to algae, Acute Toxicity to Daphnia, Combined repeated dose
toxicity study with the reproduction / developmental toxicity screening
test, Mutagenic toxicity in vivo

Comments :Deadline for circulation :Date of Circulation :Revised : September 2001

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UNEP PUBLICATIONSOECD SIDSACETANILIDESIDS INITIAL ASSESSMENT PROFILECAS No.

103-84-4

Chemical Name

Acetanilide

CH3CONHC 6H5OStructural Formula
C
NH

CH3

RECOMMENDATIONS
The chemical is currently of low priority for further work.

SUMMARY CONCLUSIONS OF THE SIAR
Human Health
Acute toxicity of acetanilide is low since the LD 50 of oral exposure in rats is 1,959 mg/kg bw.
For repeated dose toxicity, acetanilide was given by gavage at doses of 22, 67, 200, and 600 mg/kg/day to male ratsfor 30 days and to female rats for 39-50 days in accordance with an OECD TG 422 (combined repeated dose
toxicity study with reproduction/developmental toxicity screening test). The adverse effects were red pulp
hyperplasia of spleen, bone marrow hyperplasia of femur and decreased hemoglobin, hematocrit and mean
corpuscular hemoglobin concentration. The LOAEL for repeated dose toxicity in rats was 22 mg/kg/day for both
sexes.
Most of the in vitro mutagenic toxicity studies including the Ames assay, mammalian chromosomal aberration test,
Bacillus subtilis recombination assay and SCE assay showed negative results. Regarding in vivo studies, amammalian erythrocytes micronucleus test performed by OECD TG 474 showed negative results. Therefore
acetanilide is not considered to be genotoxic. There is some evidence that this chemical is not carcinogenic in rats,
mice and hamsters.
In a reproductive/developmental toxicity study performed according to OECD TG 422, no treatment -related changes
in precoital time and rate of copulation, impregnation, pregnancy were shown in any treated group. However,viability of offsprings at 600 mg/kg bw/day and body weight of pups at 200 mg/kg/day were significantly reduced.
At 600 mg/kg bw/day, four dams died and body weight was decreased at day 0 and 4 of lactation. At 200 mg/kg
bw/day, there were signs of maternal toxi city (cf. repeated dose toxicity). The NOAELs for reproduction anddevelopmental toxicity (offspring toxicity) are considered to be 200 mg/kg bw/day and 67 mg/kg bw/day,
respectively.
This chemical is not irritating to skin, but slightly irritating to the eyes of rabbits. There is no information available
on skin sensitization.
Environment
Physical-chemical properties of acetanilide are as follows: melting point 113.7 ºC, boiling point 304 ºC at 760
mmHg, water solubility 4 g/L at 20 ºC, Log Pow 1.16 at 23 ºC. EQC model of fugacity level I shows that thechemical will be distributed mainly to water. Acetanilide is readily biodegradable (MITI test : 68.7 % after 14 days
as BOD) and an estimated BCF of 1.56 by BCFWIN model based on log Pow (1.16) implies that bioaccumulationof acetanilide is low.

UNEP PUBLICATIONS

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OECD SIDSACETANILIDE

Ecotoxicity data has been generated in a limited number of aquatic species of algae (72 hr-EbC 50 ; 13.5 mg/L),
daphnid (48 hr-EC50 ; > 100 mg/L) and fish (96 hr-LC 50 ; 100 mg/L). No data on prolonged fish toxicity and toxicity
to terrestrial organisms are available. From the acute toxicity values, the predicted no effect concentration (PNEC)
of 0.135 mg/L was derived using an assessment factor of 100.
Exposure
The total production of acetanilide was about 2,300 tonnes/year in Korea in 1998, and 196 tonnes in the USA in
1998. Acetanilide is mainly used as an intermediates for the synthesis of pharmaceuticals and as an additive inhydrogen peroxide, varnishes, polymers and rubber. The most probable human exposure would be occupational
exposure through dermal contact or inhalation at workplaces where acetanilide is produced or used.
In Korea, 2,320 tonnes of the chemical was used as an intermediate for the synthesis of pharmaceuticals. Only asmall amount of 120 kg was used as a stabilizer for hydrogen peroxide solutions for hair colouring agents in 1998
and based on general information the content of the substance in such preparations would be very low and thehuman exposure is insignificant. Readily available environmental or human exposure data do not exist in Korea at
the present time. And potential exposure from drinking water, food, ambient water and in the workplace is expected
to be negligible because this chemical is produced in a closed system in only one company in Korea.

NATURE OF FURTHER WORK RECOMMENDED
No recommendation.

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UNEP PUBLICATIONSOECD SIDSACETANILIDEFULL SIDS SUMMARYCAS NO: 103-84-4
PHYSICAL-CHEMICAL
2.1
2.2
2.3
2.4
2.5
2.6 A.
B.
2.12

SPECIES

Melting Point
Boiling Point
Density
Vapour Pressure
Partition Coefficient(Log POW)
Water Solubility
pH
pKa
Oxidation: Reduction
Potential

PROTOCOL

RESULTSOECD TG 102
OECD TG 103
NA
NAOECD TG 107

113.7 °C
304 °C (at 760 mmHg)
1,219 kg/m3
0.002 hPa at 20 °C
1.16 at 23 °C

NA
NA
NA

4 g/L at 20 °C
6.5 at 20 °C
0.5 at 25 °C

In T1/2 =31 hour in air
In T1/2 > 1 year
No data
In Air
0.13 %In Water
98.57 %In Sediment 1.26 %In Soil0.02 %
In biota/suspended sediment:
0.02 %
Readily biodegradable:
68.7 %ENVIRONMENTAL FATE
AND PATHWAY
3.1.1
3.1.2
3.2
3.3

Photodegradation
Stability in Water
Monitoring Data
Transport andDistribution

Estimated (AOPwin)
OECD TG 111

3.5

Biodegradation

Other (MITI, Japan)

Estimated(EQC model :fugacity Level I )ECOTOXICOLOGY
4.1
4.2
4.3
4.5.2
4.6.1
4.6.2
(4.6.3)

Acute/Prolonged Toxicity
to FishAcute Toxicity to Aquatic
Invertebrates
Toxicity to Aquatic Plants
e.g. Algae
Chronic Toxicity to
Aquatic Invertebrates
Toxicity to Soil Dwelling
Organisms
Toxicity to Terrestrial
PlantsToxicity to Other NonM ammalian Terrestrial
Species (Including Birds)

Oryzias latipes

Other (Korean TG)

LC50 (96 hr) > 100 mg/L

Daphnia magna

Other (Korean TG)

EC50 (48 hr) > 100 mg/L

Selenastrum
capricornutum

OECD TG 201

EbC 50 (72 hr) = 13.5 mg/L
NOEC (72 hr) < 4 mg/L
No data
No data

No data

TOXICOLOGY
5.1.1

Acute Oral Toxicity

5.1.2
5.1.3
5.2.1
5.2.2
5.3
5.4
5.5
A.

Acute Inhalation Toxicity
Acute Dermal Toxicity
Skin Irritation
Eye Irritation
Skin Sensitisation
Repeated Dose Toxicity
Genetic Toxicity in vitro
Bacterial Test
(Gene mutation)

Rat

OECD TG 401

RabbitRabbitOECD TG 404
OECD TG 405

Rat

OECD TG 422

S. typhimurium

Other (Ames test)

UNEP PUBLICATIONSLD 50 1959 mg/kg in male/
femaleLD 50 2033 mg/kg in male
LD 50 1893 mg/kg in female
No data
No data
Not irritating
Slightly irritating
No data
LOAEL = 22 mg/kg bw/day
Negative (with metabolic
activation)
Negative (without metabolic
activation)

5OECD SIDS
CAS NO:
B.
5.6
5.7
5.8
5.9
5.11

6

ACETANILIDE
103-84-4

Non-Bacterial in vitro Test
(Chromosomal aberrations)
Genetic Toxicity in vivo
Carcinogenicity
Toxicity to Reproduction
Developmental Toxicity /Teratogenicity
Experience with Human
Exposure

SPECIESPROTOCOL

Chinese hamster
cell
Mouse

Other (cytogenetic)

Rat/mouse/hamster

Rat
Rat
Human

OECD TG 474
Other
OECD TG 422
OECD TG 422
exposure in
workplace,
overdosing as a drug

UNEP PUBLICATIONSRESULTS
Negative (without metabolic
activation)
Negative
No tumorigenesis
NOAEL=200 mg/kg /dayNOAEL (offspring toxicity)= 67 mg/kg /day
Cyanosis,
methemoglobinemia

OECD SIDSACETANILIDESIDS INITIAL ASSESSMENT REPORT
1IDENTITY`OECD Name :Acetanilide

Synonym :Acetaminobenzene ; Acetanil ; Acetanilid; Acetaminobenzene;
Acetic acid anilide; Acetoanilide; Acetylaminobenzene;
Acetylaminobenzol; Acetylaniline; Antifebrin; N-Acetyl
aniline; N-Acetyl-benzenamine; N-Phenyl acetamide; N-Phenyl
acetic acid amide; Phenalgene; Phenalgin; USAF EK-3

CAS Number :103-84-4

Molecular Formula :C8H9NO

Structural Formula :CH3CONHC6H5
O
C
NH

CH3

Degree of Purity :> 97% (industrial grade)

Major Impurity :unknown

Essential Additives :unknown

Physical-chemical properties
Melting Point :113.7 °C
Boiling Point :304 °C at 760 mmHg
0.002 hPa at 20 °C
Vapour Pressure :Water Solubility :4 g/L at 20 °C
Partition Coefficiency (Log POW) :1.16 at 23 °C
Classification in member countries
Not classified as a toxic chemical in the Toxic Chemicals Control Act, Republic of Korea

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OECD SIDS
2.

ACETANILIDE

GENERAL INFORMATION ON EXPOSURE

Acetanilide is produced in a non-dispersive manner and mainly used as an intermediates in thesynthesis of pharmaceuticals and dyes, as an additive for hydrogen peroxide and cellulose ester
varnishes, and as a plasticizer in polymer industry as well as accelerator in the rubber industry.
Total production of acetanilide in Korea is about 2,300 tonnes/year and the import into Korea wasless than 1 % of the total production in 1998 (MOE, Korea, 1998). Acetanilide is produced by only
one company in Korea. Mostly it is used as an intermediate for synthesis of pharmaceuticals anddyes. Less than 0.2 ton/year is used as a stabilizer in hydrogen peroxide solution. Acetanilide is
produced as a solid form with an industrial grade purity of > 97 % in Korea. The US EPA reported
that 196 tonnes of acetanilide were produced in 1998 in the US.
Although acetanilide is used mainly as an intermediate in closed systems, it may be released into
the environment from its production and processing sites. No monitoring data are available in Korea
at the present time.

2.1

Environmental Fate

Acetanilide is not expected to undergo direct photolysis in water due to the lack of functionalgroups to absorb UV light (HSDB, 2000). However, in air, it is expected to degrade rapidly byreaction with photochemically-produced hydroxyl radicals. The estimated half-life is about 31 hours(NIER, Korea, 2001a).
Hydrolysis of acetanilide is less than 10 % over 5 days in a water solution of pH 4 – pH 9 at 50 °C
using OECD TG 111(NIER, Korea, 2001b). Therefore, the chemical hydrolysis is not expected to
be an environmentally important removal process in aquatic systems (Mabey, W., 1978).
If released into water, biodegradation of acetanilide is expected to be an important removal process.
Biodegradation of acetanilide was 68.7 % after 14 days in a MITI I test. The substance is therefore
considered to be readily biodegradable (MITI, Japan, 1992). An estimated BCF of 1.56 by
BCFWIN Model (NIER, Korea, 2001a), based on log P OW =1.16 (NIER, Korea, 2001c), implies
that bioaccumulation of acetanilide in aquatic organisms is low (Franke et al., 1994).
If it is released into the soil, acetanilide is expected to exhibit very high mobility (Swann et al,1983) based on a measured K OC of 27 (Briggs et al, 1981). Acetanilide is not expected to volatilize
from wet soil based on an estimated Henry's Law constant of 6.2 x 10-9 atm m 3/mole (NIER , Korea,
2001a).
No monitoring data of acetanilide in Korea are available.
The distribution of emitted acetanilide at equilibrium in the environmental compartments was
obtained by the EQC model of fugacity level I, and it showed that the highest distribution of thechemical is in the water system (Water, 98.57 % ; Air, 0.13 % ; Soil, 1.26 % ; Sediment, 0.02 % ;biota and suspended sediment, 0.02 %) (NIER, Korea, 2001a).

2.2

Human Exposure

The most probable human exposure would be occupational exposure through dermal contact orinhalation at workplaces where acetanilide is produced or used. NIOSH (National Occupational
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UNEP PUBLICATIONSOECD SIDSACETANILIDE

Exposure Survey 1981-1983) has statistically estimated that 9,000 workers (6,100 of these arefemale) are potentially exposed to acetanilide in USA.
No human exposure data are available in Korea at present time. However, it seems that consumer
exposure does not occur. Potential exposure to this chemical from drinking water, food and ambient
water is expected to be negligible because it is produced in the closed system in only one company
in Korea.

UNEP PUBLICATIONS

9OECD SIDSACETANILIDE3.

HUMAN HEALTH HAZARDS

3.1

Effects on Human Health3.1.1 Toxicokinetics and Metabolism
Acetanilide is converted to a phenolic metabolite in the human body which gives it an analgesic
effect, but some is converted to aniline (aminobenzene) which is toxic. It was found that for a single
dose of 10 mg/kg of acetanilide, the half-life in blood plasma was 191.5 ± 27.8 min. of in 25
subjects (human) and the metabolic clearance rate was 14.1 ± 2.8 liter/h of (Kellerman et al., 1978).
3.1.2 Acute Toxicity
The acute effects of acetanilide exposure have been examined in mice, rats, guinea pigs, rabbits,
cats and dogs. The data show a wide range of LD50s depending on the species. The preferred results
are shown in Table 1. The oral LD50 value ranges from 1,428 to 2,429 mg/kg bw for male andfemale rats with a combined average of 1,959 mg/kg bw. Based on this information, the acute oral
toxicity of this chemical is likely to be low according to the harmonized integrated hazard
classification system. The adverse effects by oral administration observed in laboratory animals are
ptosis, lethargy, abnormal gait, lacrimation, sedation, narcosis, paralysis and death afteradministration (Higgins et al., 1993 ; Van den Heuvel et al., 1990).
Table 1. Acute toxicity of acetanilide in experimental animals
Route

Oral

Animal

Value

Type

Reference

Rat

Male/Female : 1959 (1428-2429)
mg/kg
Male :2033 (1368-2858) mg/kg
Female:1893(1218~2459) mg/kg

LD 50

Van den Heuvel etal., 1990

Mouse

1210 mg/kg bw

LD 50

Starmer 1971

Inhalation.

No data

DermalNo dataI.P

Rat

540 mg/kg bw

LD 50

Argus 1959

Mouse

715 mg/kg

LD 50

Argus 1959

Conclusion:
Oral LD50 value for male and female rats was 1,959 mg/kg bw.
3.1.3 Repeated Dose Toxicity
The study by MOE (MOE,Korea, 2001a) conducted according to GLP using OECD test guideline
422 was selected as the key study for repeated dose toxicity. Details of the study are as follows;
Acetanilide was administrated to rats (males: 12/dose, females: 12/dose) by gavage at doses of 22,
67, 200 and 600 mg/kg/day. Males were dosed for 30 days and females were dosed for 39-50 days
from 14 days before mating to day 3 of lactation.
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UNEP PUBLICATIONSOECD SIDSACETANILIDE

Cyanosis was observed at 600 mg/kg in males and females, and decreased locomotor activity was
noted at 200 mg/kg in males as well as at 600 mg/kg in males and females. Salivation at 67, 200,
600 mg/kg and reddish tear at 600 mg/kg in males were shown as well.
Four females at 600 mg/kg died on days 21, 22, and 23 of pregnancy and day 4 of lactation,
respectively.
There were significant decreases in HGB, HCT, MCHC at 22, 67, 200, 600 mg/kg and RBC at 67,
200, 600 mg/kg and increase in MCV at 67, 200, 600 mg/kg, MCH at 200, 600 mg/kg and RET at
600 mg/kg for males. Blood biochemistry revealed increases in AST, ALT, ALB, A/G ratio and total
bilirubin in males at 200 and/or 600 mg/kg.
Increased weights of spleen, liver, brain, heart, kidney, and ovary and decreased thymus weights
were noted in rats.
In histopathological examination, red pulp hyperplasia of spleen and bone marrow hyperplasia of
femur were observed at 22, 67, 200, 600 mg/kg and extramedullary hematopoiesis of liver at 200
and 600 mg/kg in both sexes. Also significant increases of thymus atrophy were observed infemales at 200 and 600 mg/kg.
The LOAEL for repeated dose toxicity of acetanilide was 22 mg/kg/day for male and female.
Conclusion:
The adverse effects in rats by oral administration were red pulp hyperplasia of spleen, bone marrow
hyperplasia of femur and decreased HGB, HCT and MCHC. The LOAEL for repeated dose toxicity
in rats was 22 mg/kg/day for both sexes.
3.1.4 Genetic Toxicity or Mutagenicity
Several in vitro studies show that acetanilide is non-mutagenic to Salmonella typhimurium with orwithout metabolic activation (Goldman et al., 1977 & 1980; Wheeler et al., 1975; Ogawa et al.,
1987; Sugimura et al., 1976; Zeiger et al., 1988). Two mammalian chromosomal aberration tests, aBacillus subtilis recombination assay and a SCE assay show negative results (Sasaki et. al., 1983;
Yoshida, 1980; Ishidate et al., 1978; Tanooka et al., 1977).
Regarding genetic toxicity in vivo, a mammalian erythrocytes micronucleus test was performed by
MOE using OECD TG 474. In the study 6 male ICR mice were treated by i.p up to 1500 mg/kg
b.w and the result showed acetanilide did not induce micronuclei of bone marrow cells (NIER,
Korea, 2001d). Another available micronucleus test showed acetanilide has a weak
micronucleous-inducing potency (Sicardi, 1991). In this assay, the MNPCE rate in the control
group was relatively higher than what would usually be expected. Positive results were reported in
an in vivo study regarding chromosome aberrations, in which breaks and gaps in rat bone marrowcells were examined (Shimazu, 1976). However, this study is considered invalid since the test
condition details are poorly reported. Other in vivo studies mostly indicated that acetanilide is not
genotoxic.
Conclusion:
Acetanilide is not genotoxic because of negative results in bacterial and non-bacterial tests with andwithout exogenous metabolic activation system in vitro as well as in a micronucleus test in vivo.

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OECD SIDSACETANILIDE

3.1.5 Carcinogenicity
Limited information on carcinogenicity is available from studies performed in both male andfemale of rats, mice and hamsters. However, carcinogenicity studies showed no evidence oftumors in liver, mammary gland, etc. (Blunck, J.M., 1975; Yamamoto et al., 1970; Wright, 1967).
Even a 4 generation study using mouse strains of ABC-A revealed that there was no appearance oftumors in the mammary gland (Wright, 1967). Human data are not available at present.
Conclusion:
There is some evidence that acetanilide is not carcinogenic in rats, mice and hamsters.
3.1.6 Reproduction / Developmental Toxicity
A combined repeated dose toxicity study with the reproduction/developmental toxicity screening
test (OECD TG 422) was conducted using Sprague-Dawley rats (MOE,Korea, 2001a). In thisstudy, the rats were exposed to acetanilide at doses of 22, 67, 200, and 600 mg/kg/day for 30 days
for male and for 39 - 50 days for females.
No treatment-related changes in precoital time, rate of copulation, impregnation and pregnancy
were observed in any exposure level group.
At 200 mg/kg/day, there was a decrease in body weight gain at day 4 after birth in both male andfemale pups. Perinatal deaths were increased, and cyanosis and icterus in offsprings were observedin the 600 mg/kg/day dose group. The viability index on day 4 was decreased in 600 mg/kg/day
dose group and the NOAEL for reproduction is 200 mg/kg /day. The body weight of pups wasdecreased from the dose level of 200 mg/kg/day, and the NOAEL for developmental toxicity(offspring toxicity) is considered to be 67 mg/kg /day.
Conclusion:
No treatment-related changes in precoital time, rate of copulation, impregnation and pregnancy
were observed in any treated group. However, the viability of offspring at 600 mg/kg/day and the
body weight of pups at 200 mg/kg/day were significantly reduced. The NOAELs for reproduction
and developmental (offspring) toxicity are considered to be 200 mg/kg /day and 67 mg/kg /day,
respectively.
3.1.7 Other: Irritation ; Sensitization ; Corrosivity
According to the studies performed according to OECD TG 404 (acute dermal irritation/corrosion)and TG 405 (acute eye irritation/corrosion), acetanilide was not irritating to skin but slightly
irritating to the eyes of rabbits (Hoechst AG, 1991). It is described that labelling is not required.
There is no information available for skin sensitization.
Conclusion:
Acetanilide is not irritating to skin but slightly irritating to the eyes in animals. There is no
information available data for skin sensitization.

3.2

Initial Assessment for Human HealthAcetanilide is converted to a phenolic metabolite in the body that gives it an analgesic effect,
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UNEP PUBLICATIONSOECD SIDSACETANILIDE

however some is converted to aniline (aminobenzene) which is toxic.
The LD 50 for acute oral toxicity was 1,959 mg/kg bw for male and female rats. This chemical is not
irritating to skin but slightly irritating to the eyes of rabbits. There is no information available onskin sensitization.
In accordance with OECD TG 422 (combined repeated dose with the reproduction/developmental
toxicity screening test), acetanilide was given by gavage at doses of 22, 67, 200 and 600 mg/kg/day
to male rats for 30 days and female rats for 39-50 days. The adverse effects were red pulp
hyperplasia of spleen, bone marrow hyperplasia of femur and decreased HGB, HCT and MCHC.
The LOAEL for repeated dose toxicity in rats was 22 mg/kg/day for both sexes.
In the reproduction/developmental toxicity screening study, no treatment-related changes inprecoital time, rate of copulation, impregnation and pregnancy were found in any treated group.
However, the viability of offspring at 600 mg/kg/day and the body weight of pups at 200 mg/kg/day
were significantly reduced. The NOAELs for reproduction and developmental toxicity are
considered to be 200 mg/kg /day and 67 mg/kg /day, respectively.
Most in vitro mutagenic toxicity studies including Ames assays, mammalian chromosomal
aberration tests, a Bacillus subtilis recombination assay and a SCE assay showed negative results.
Regarding in vivo studies, a mammalian erythrocytes micronucleus test performed according toOECD TG 474 also showed negative results. Therefore acetanilide is not considered to be
genotoxic.
There is some evidence that this chemical is not carcinogenic in rats, mice and hamsters.

UNEP PUBLICATIONS

13OECD SIDSACETANILIDE

4.

HAZARDS TO THE ENVIRONMENT

4.1

Aquatic Effects

Ecotoxicity data have been generated in a limited number of aquatic species of algae, daphnids andfish. No data on prolonged fish toxicity and toxicity to terrestrial organisms are available. Results
are summarized in Table 2.
Table 2. Summary of effects on aquatic organisms
Species
Algae :
- Selenastrum capricornutum
Daphnids :- Daphnia magna
Fish :- Oryzias latipes- Lepomis macrochirus- Menidia beryllina

4.2

Exposure
duration

Results (mg/L)

Reference

72 hr

EbC 50 = 13.5
NOEC < 4

M O E, Korea, 2001c

48 hr

EC50 > 100

MOE, Korea, 2001b

96 hr
96 hr
96 hr

LC 50 > 100
LC50 = 100
LC50 = 115

MOE, Korea, 1997
Dawson et al., 1975/1977
Dawson et al., 1975/1977

Terrestrial Effects

There is no available information.

4.3

Other Environmental Effects

There is no available information.

4.4

Initial Assessment for the Environment

The estimation with a fugacity level I model (EQC) reveals that the majority of acetanilide will be
distributed to water (98.57 %). The chemical is readily biodegradable (68.7 %) and it has a low
potential for bioaccumulation (1.56). From the lowest acute toxicity value of algae, daphnid andfish, the predicted no effect concentration (PNEC) of 0.135 was derived using an assessment factorof 100, which is based on the 72 hr - E bC 50 of algae, 13.5 mg/L.

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UNEP PUBLICATIONSOECD SIDSACETANILIDE

5.

CONCLUSIONS AND RECOMMENDATIONS

5.1

Conclusions

Physical/Chemical property, production, use and distribution
Acetanilide is readily biodegradable (MITI I test: 68.7 % after 14 days as BOD). An estimated BCF
of 1.56 by BCFWIN Model based on the log POW (1.16) implies that bioaccumulation of acetanilide
is low. A fugacity level I model calculation shows that the chemical will be distributed mainly towater. The total production volume of acetanilide in Korea was about 2,300 tonnes/year in 1998.
Mostly it is used as an intermediate for the synthesis of pharmaceuticals and dyes. Less than 0.5 ton
is used as a stabilizer in hydrogen peroxide solutions. Although acetanilide is used mainly as anintermediate in closed systems, it may be released into the environment from its production andprocessing sites. No monitoring data are available in Korea at the present time.
Human HealthAcetanilide is converted to a phenolic metabolite in the body that gives it an analgesic effect, butsome is converted to aniline which is toxic.
The LD 50 for acute oral toxicity was 1,959 mg/kg bw for male and female rats. This chemical is not
irritating to skin but slightly irritating to the eyes of rabbits. There is no information available onskin sensitization.
In accordance with OECD TG 422 (combined repeated dose toxicity test andreproduction/developmental toxicity screening test), acetanilide was given by gavage at doses of 22,
67, 200, and 600 mg/kg/day to male rats for 30 days and female rats for 39-50 days. The adverse
effects were red pulp hyperplasia of spleen, bone marrow hyperplasia of femur and decreased HGB,
HCT and MCHC. The LOAEL for repeated dose toxicity in rats was 22 mg/kg/day for both sexes.
In the reproduction/developmental toxicity screening study, no treatment-related changes inprecoital time, rate of copulation, impregnation and pregnancy were noted in any treated group.
However, the viability of offspring at 600 mg/kg/day and the body weight of pups at 200 mg/kg/day
were significantly reduced. The NOAELs for reproduction and developmental (offspring) toxicity
are considered to be 200 mg/kg/day and 67 mg/kg/day, respectively.
Most in vitro mutagenic toxicity studies including Ames assays, mammalian chromosomal
aberration tests, a Bacillus subtilis recombination assay and a SCE assay showed negative results.
Regarding in vivo studies, a mammalian erythrocytes micronucleus test performed under OECD TG
474 showed negative results. Therefore acetanilide is not considered to be genotoxic.
There is some evidence that this chemical is not carcinogenic in rats, mice and hamsters.
Environment
Ecotoxicity data has been generated in a limited number of aquatic species of algae (72 hr-E bC 50 ;13.5 mg/L), daphnids (48 hr-LC50 ; >100 mg/L) and fish (96 hr-LC50 ; 100 mg/L). No data on
prolonged fish toxicity and toxicity to terrestrial organisms are available. From the acute toxicity
values, the predicted no effect concentration (PNEC) of 0.135 was derived using an assessment
factor of 100.

5.2

Recommendations

The chemical is currently of low priority for further work

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OECD SIDS
6.

ACETANILIDEREFERENCES

Argus, M.F. M.P. Newell, J.T. Henderson, F.E. Ray. Antipyretic and toxicity studies with acetanilideand o-,m-, and p-chloroacetanilide. J. Am. Pharm. Assoc. 48, 204-207 (1959)
Blunck, J. M. and Crowther, C. E. Enhancement of azo dye carcinogenesis by dietary sodium
sulphate. Europ. J. Cancer 11, 23-31(1975)
Briggs, G.G. Theoretical and experimental relationships between soil adsorption, octanol-waterpartition coefficient, water solubilities, bioconcentration factors, and the parachor. J. Agric Food
Chem. 29, 1050-9(1981)
Dawson, G.W., A.L. Jennings, D. Drozdowski, E. Rider. The Acute Toxicity of 47 Industrial
Chemicals to Fresh and Saltwater Fishes. Journal of Hazardous Materials 1. 303-318(1975/77)
Dunker, M.F.W. & Thompson, M.R. Toxicity and antipyretic properties of some halogenatedacetanilide. J. Am. Pharm. Assoc. 28, 70-73 (1939)
Franke, C., G. Studinger, G. Berger, S. Bohling, U. Bruckmann, D. Cohors-Fresenborg, and U.
Johncke. The Assessment of Bioaccumulation. Chemosphere. 29, 1501-14(1994)
Goldman, P.L.A. Wheeler, J.H. Carter, J.A. Ingelfinger, F.B. Soderberg. Properties of the Ames
salmonella mutants lodged in the gastrointestinal tract of genotobiotic rats. Am. J. Clin. Nutr. 30,
1921-1926 (1977)
Higgins, J.A. & H.A McGuigan. The influence of caffeine on the effects of acetanilide. J. Pharm.
Exp. Ther. 49, 466-478(1933)
Hoechst AG, Unpublished reports. Ber. 90, 1336(1990)
Hoechst AG, Unpublished reports. Ber. 90,1295 (1991)
Ishidate, M. & Odashima, S. Chromosome tests with 134 compounds on chinese hamster fibroblast
cells in vitro – A screening for chemical carcinogens. Mutat. Res. 48, 337-354 (1977)
Kellermann, G., M.L. Kellermann. Benzo(a)pyrene Metabolism and Plasma Elimination Rates of
Phenacetin, Acetanilide and Theophylline in Man. Pharmacology (Basel). 17(4), 191 (1978)
Mabey. W., T. Mill. Critical Review of Hydrolysis of Organic Compounds in water Under
Environmental Conditions. J. Phys. Chem. Ref. Data. 7(2): 383-415(1978)
Ministry of Environment(MOE), Korea (1998), Survey on Circulation Volume of Chemicals in
Korea
Ministry of Environment(MOE), Korea (2001a), Combined Repeated Dose Toxicity with the
Reproduction /Developmental Toxicity Screening Testing of Acetanilide in Rats (test No.G00154,
tested by KRICT)
Ministry of Environment (MOE), Korea (1997), Toxicity evaluation of existing chemicals(X)(tested
by KRICT) c)
Ministry of Environment(MOE), Korea (2001b), The Acute toxicity of Acetanilide to Aquatic
Invertebrate (Daphnia) (tested by KRICT)
Ministry of Environment(MOE), Korea (2001c), The Acute toxicity of Acetanilide to Aquatic plants(algae) (tested by KRICT)
MITI, Japan, Biodegradation and Bioaccumulation Data of Existing Chemicals based on the CSCL
Japan; Published by Japan Chemical Industry Ecology-Toxicity & Information Center, p.3-21,
16

UNEP PUBLICATIONSOECD SIDSACETANILIDE

October (1992)
National Institute of Environment Research(NIER), Korea (2001a), Estimation of physical/chemical
properties and environmental fate of SIDS chemicals
National Institute of Environmental Research(NIER), Korea (2001b), Test of Acetanilide Hydrolysis
as a function of pH(tested by LGCI)National Institute of Environmental Research(NIER), Korea (2001c), Test of Acetanilide Partition
Coefficient (n-octanol/water)(tested by KRICT)
National Institute of Environmental Research(NIER), Korea (2001d) Micronucleus test of
acetanilide in Mouse (tested by LGCI toxicology center)
Ogawa, S.T. Hirayama, Y. Fujioka, S. Ozasa, M. Tokuda, K Hirai, S. Fukui. Mutagenicity
modulating effect of quercetin on aromatic amines and acetamides. Mutation Research. 192, 37-46(1987)
Online Toxicology Data Network(TOXNET): Hazardous Substances Data Bank(HSDB), 2000
Sasaki M., Yoshida, S. and Hiraga K. Additional effect of acetaminophen on the mutagenicity andclastogenicity of N-methyl-N' -nitro-N-nitrosoguanidine in cultured Chinese hamster CHO-Kl cells.
Mutation Research 122, 367-372(1983)
Smith, P.K. Change in blood pigments associated with the prolonged administration of large dosesof acetanilide and related compounds. J. Pharm. Exp. Ther. 70, 171-178 (1940)
Starmer, G.A. S. McLean, J. Thomas. Analgesic potency and acute toxicity of substituted anilides
and benzamides. Tox. Appl. Pharm. 19, 20-28 (1971)
Swann RL et al; Res Rev 85: 23 (1983)
Tanooka, H. Development and Applications of Bacillus Subtilis Test Systems for Mutagens,involving DNA-Repair Deficiency and Suppressible Auxotrophic Mutations. Mutation Research.
42, 19-32(1977)
Van den Heuvel, M.J., D.G Clark, R.J. Fielder, P.P. Koundakjian, G.J.A.Oliver, D.Pelling,
N.J.Tomlinson, A.P,Walker. The international validation of a fixed-dose procedure as an alternative
to the classical LD50 test. Food Chem. Tox. 28(7), 469-482 (1990)
Wheeler, L.A., J. H. Carter, F. B. Soderberg, and P. Goldman. Association of salmonella mutants
with germfree rats: Site specific model to detect carcinogens as mutagens. Proc. Natl. Acad. Sci.
USA 72(11), 4607-4611(1975)
Wright, H.N. Chronic Toxicity Studies of Analgesic and Antipyretic Drugs and Congeners. Tox. andApplied Pharmacology. 11, 280-292(1967)
Yoshida, S., Nawai S., Hirage K. Cytogenetic studies of acetaminophen and its related compounds.
Ann. Rep. Tokyo Metr. Res. Lab. P. H. 31-32, 102-108 (1980)
Zeiger, E. B. Anderson, S. Haworth, T. Lawlor, K. Mortelmans. Salmonella mutagenicity tests:IV.
Results form the testing of 300 chemicals. Env. Mol. Mutag. Vol.11/12, 1-19 (1988)

UNEP PUBLICATIONS

17

OECD SIDSACETANILIDEREVISED OECD HPV FORM 1

SIDS DOSSIER
ON THE HPV CHEMICAL

Acetanilide
CAS No. 103-84-4
Sponsor Country : Republic of Korea
DATE : September 2001
Revised : September 2001

18

UNEP PUBLICATIONSOECD SIDSACETANILIDESIDS PROFILE

1.01 A.

CAS No.

103-84-4

1.01 C.

CHEMICAL NAME
(OECD Name)

Acetanilide

1.01 D.

CAS DESCRIPTOR

Not applicable

1.01 G.

STRUCTURAL FORMULA

CH3CONHC 6H5OTHER CHEMICALIDENTITY INFORMATION

Acetaminobenzene
Acetanil
Acetanilid
Acetamidobenzene
Acetic acid anilide
Acetoanilide
Acetylaminobenzene
Acetylaminobenzol
Acetylaniline
Antifebrin
N-Acetyl aniline
N-Acetyl-benzenamine
N-Phenyl acetamide
N-Phenyl acetic acid amide
N-phenylacetamide
Phenalgene
Phenalgin
USAF EK-3

1.5

QUANTITY

1.7

USE PATTERN

1.9

SOURCES AND LEVELS OFEXPOSURE

2,300 tonnes/year in Korea
Intermediates for synthesis of pharmaceuticals anddyes in closed system

ISSUES FORDISCUSSION(IDENTIFY, IF
ANY)UNEP PUBLICATIONS

19

OECD SIDSACETANILIDEOECD Study

GLP

Other Study

Estimation Method

Acceptable

SIDS Testing
Required

SUMMARY

Information

SIDS

Y/N

Y/N

Y/N

Y/N

Y/N

Y/N

Y/N

Y
Y
Y
Y
Y
Y
Y
N

Y
Y
N
N
Y
N
N

N
N

N
N
Y
Y
N
Y
Y

N
N
N
N
N
N
N

Y
Y
Y
Y
Y
Y
Y

N
N
N
N
N
N
N
N

Y

N

Y

Y
N
N
Y
N

Y
Y
Y
Y
Y

N
N
N
N
N

Y
Y
N

N
N
N

Y
Y
Y

N
N
N
N
N
N
N

N

N

Y

Y

N

N

Y

N
N
N
N

Y
Y
Y
N

Y
Y
N
N
N
Y

N
N
N
N
N
N

Y
Y
Y
Y
Y
Y

N
N
N
N
N
N

CAS NO: 103-84-4

STUDY
PHYSICAL-CHEMICAL DATA
2.1
2.2
2.3
2.4
2.5
2.6

Melting Point
Boiling Point
Density
Vapour Pressure
Partition Coefficient
Water Solubility
pH and pKa values
Oxidation: Reduction potential

2.12

Y

OTHER P/C STUDIES RECEIVEDENVIRONMENTAL FATE and PATHWAY
3.1.1
3.1.2
3.2
3.3
3.5

Y
Y
Y
Y
Y

Photodegradation
Stability in water
Monitoring data
Transport and Distribution
BiodegradationN

N
Y

OTHER ENV FATE STUDIES RECEIVED
ECOTOXICITY
4.1
4.2
4.3
4.5.2
4.6.1
4.6.2
4.6.3

Acute toxicity to Fish
Acute toxicity to Daphnia

Toxicity to Algae
Chronic toxicity to Daphnia
Toxicity to Soil dwelling organisms
Toxicity to Terrestrial plants
Toxicity to Birds

Y
Y
Y
N
N
N
N

N
N
Y

Y
N
N
Y

Y

Y
Y
Y
Y
Y
Y

N
N
Y
Y
Y
N

Y
Y
Y

OTHER ECOTOXICITY STUDIES RECEIVEDTOXICITY
5.1.1
5.1.2
5.1.3
5.4
5.5

5.6
5.8
5.9
5.11

Acute Oral
Acute Inhalation
Acute Dermal
Repeated Dose
Genetic Toxicity in vitro. Gene mutation. Chromosomal aberration
Genetic Toxicity in vivo
Reproduction Toxicity
Development / Teratogenicity
Human experienceY

OTHER TOXICITY STUDIES RECEIVED

20

UNEP PUBLICATIONS-OECD SIDSACETANILIDE

1. GENERAL INFORMATION
1.01

SUBSTANCE INFORMATIONA.

CAS number

103-84-4

B.

Name (IUPAC name)AcetanilideC.

Name (OECD name)Acetanilide (EINECS)D.

CAS Descriptor (where applicable for complex chemicals)
Not Applicable since acetanilide is not a complex chemical.

E.

EINECS-Number

203-150-7

F.

Molecular FormulaC 8H 9NOG.

Structural Formula (indicate the structural formula in smiles code, if available)
CH3CONHC 6H5
O
C
NH

CH3

H.

Substance Group (if possible, only for petroleum products, see HEDSET explanatory note)
Not Applicable since acetanilide is not a petroleum product.

I.

Substance Remark (Indicate the substance remark as prescribed in the EINECS Inventory, if possible)
Not Applicable since no prescription in the EINECS Inventory.

J.

Molecular Weight

1.02

OECD INFORMATIONA.

Sponsor Country :B.

Lead Organisation:
Name of Lead Organisation: National Institute of Environmental ResearchContact person:
Dr. Moon-Soon LEE
Address:
Street:Gyeongseo-dong, Seo-gu
Postal code :404-170
Town:
IncheonCountry:
Republic of Korea
Tel:82-32-560-7113
Fax:
82-32-568-2037
E-mail :mslee416@me.go.kr

C.

Name of responder(Information on a responder should be provided when companies respond to Lead
Organisation or SIDS Contact Points.)

135.17

Republic of Korea

Name : same as above
Address : same as above

UNEP PUBLICATIONS

21

OECD SIDSACETANILIDE

1.1

GENERAL SUBSTANCE INFORMATION

A.

Type of Substanceelement [ ]; inorganic [ ]; natural substance [ ]; organic [x];organometallic [ ]; petroleum product [ ]B.

Physical State (at 20°C and 1.013 hPa)gaseous [ ]; liquid [ ]; solid [x]C.

Purity (indicate the percentage by weight/weight)> 97 % (Industrial grade, Korea)
97 & 99.95+%(Aldrich Catalog Handbook of Fine Chemicals)
90 – 100 % (MSDS from Oxford Univ.)
99 – 100 % (MSDS from Mallinckrodt Baker, Inc.)

1.2

SYNONYMS
Acetaminobenzene
Acetanil
Acetanilid
Acetamidobenzene
Acetic acid anilide
Acetoanilide
Acetylaminobenzene
Acetylaminobenzol
Acetylaniline
Antifebrin
N-Acetyl aniline
N-Acetyl-benzenamine
N-Phenyl acetamide
N-Phenyl acetic acid amide
N-phenylacetamide
Phenalgene
Phenalgin
USAF EK-3

1.3

IMPURITIES [Indicate CAS No., chemical name (IUPAC name is preferable), percentage, if possible
EINECS number.]
CAS No:
EINECS No:
Name:Value:
Remarks:

1.4

ADDITIVES (e.g. stabilising agents, inhibitors etc. Indicate CAS No., chemical name (IUPAC name ispreferable), percentage, if possible EINECS number), the component of the UVCB (substance with no definedcomposition) should be indicated here.)
CAS No:
EINECS No:
Name:Value:
Remarks:

22

UNEP PUBLICATIONSOECD SIDS
1.5

ACETANILIDEQUANTITY [Information on production or import levels should be provided in figures or ranges (e.g. 1,0005,000, 5,000-10,000 tonnes, etc.) per responder or country and the date for which those ranges apply should begiven. For EU Member states, only indicate the EU import figure. Give an estimation of the global production
quantity in the remarks field. Information on the number of producers in the country and the source of
information should also be given in the remarks field.)

1.6

Remarks:(If possible, indicate if the substance was produced and/or imported during the 12months following adoption of the EU regulation on existing chemicals.)
The production level of acetanilide in Korea is estimated as 2,300 tons in 1998.
Less than 1% of the produced is exported.
According to a survey by US NIOSH in 1983, 716 facilities in 3 kinds ofindustries were reported to engage either in production or use of the chemical.
The total volume of acetanilide in the world is not available.

Reference :Ministry of Environment(MOE), Korea(1998), Survey on Circulation Volume ofChemicals in Korea

LABELLING AND CLASSIFICATION [If possible, enter information on labelling and classification,such as labelling and classification system, existence of specific limit, symbols, nota, R-Phrases and S-Phrasesof EC Directive 67/548/EEC. See HEDSET Explanatory Note.]
LabellingType:
Specific limits:
Symbols:
Nota:
R-phrases:
S-phrases:
Text of S-phrases:
Remarks:
Classification
Type:
Category of danger:
R-phrases:
Remarks:* Acetanilide is not listed on the Dangerous Substance Directive (Annex I) of EC Directive 67/548/EEC** Acetanilide is not classified as Toxic Chemicals in Korea

1.7

USE PATTERN
A. General [Data on use pattern have to be given by assigning main types according to their exposure
relevance (i.e. non-dispersive use, use in closed systems, use resulting in inclusion into or onto matrix and wide
dispersive use), industrial categories (e.g. basic chemical industry, chemical industry, agricultural industry,
personal and domestic use) and use categories such as colouring agents, intermediates, solvents, adhesives,cleaning/washing agents, fertilizers, impregnation agents, surface-active, etc. If available, give an estimation ofdifferent uses in percentage terms.]
Type of Use:(a) mainindustrial
use

Category:
non-dispersive use
chemical industry: used in synthesis
intermediates (medicines, dyes, and camphor)(b) mainindustrialuse

non-dispersive use
chemical industry: used as additives
stabilizer(hydrogen peroxide and cellulose ester varnishes)

UNEP PUBLICATIONS

23

OECD SIDSB.

ACETANILIDE(c) mainindustrialuse

use resulting in inclusion into matrix
polymer industry : as plasticizer
others (plasticizer)(d) mainindustrialuse

use resulting in inclusion into matrix
other: rubber industry
others (accelerator)

Reference :Ministry of Environment(MOE), Korea(1998), Survey on Circulation Volume ofChemicals in Korea

Remark :General use of acetanilide in the world are shown above. Among 2,300 tons
consumed in Korea, Most of them are used for synthesis of pharmaceuticals anddyes, and the rest (< 1 %) are consumed as a stabilizer of hydrogen peroxide
solution.

Uses in Consumer Products
Function

Amount present

Physical state

Remarks:
Reference:

1.8

OCCUPATIONAL EXPOSURE LIMIT VALUE
None

1.9

SOURCES OF EXPOSURE
Describe sources of potential human [other than concentration of chemicals in the workplace and indoor
environment (see 5.11)], or environmental exposure, including emission data (e.g. quantities per media withinformation such as time dimensions of release, indication of type of release (e.g. point source or diffuse), typeof estimating (e.g. average or worst case), uncertainties in estimation), for all phases of the life cycle of thechemical, if available, including manufacturing and user areas.
For environmental exposure, indicate the production process briefly, number of sites of manufacture and, thebasis for concluding that the process is "closed" if applicable.
Also an indication of measured exposure levels (expressed in an appropriate form, e.g. geometric mean andstandard deviation) can be mentioned here Any information that will help to focus the assessment of exposure(either quantitative or quantitative in nature) can be mentioned, if available.)
Source:Remarks:

Reference:Media of release
Quantities per media
Number of workers potentially exposed to acetanilide in the U.S. : 9,000 (6,100
female)Limited monitoring data indicate that non-occupational exposure can occur from theingestion of contaminated drinking water. However, the most probable human
exposure would be occupational exposure, which may occur through dermal contact
at workplaces.
NIOSH National Occupational Exposure Survey 1983

1.10

ADDITIONAL REMARKS

A.

Options for disposal [Mode of disposal (e.g. incineration, release to sewage system, etc.) for each category
and type of use, if appropriate; recycling possibility]
Remarks:

24

Add to a flammable solvent (alcohol or benzene)
Pour into an iron pan in an open pit

UNEP PUBLICATIONSOECD SIDSACETANILIDE
Ignite or spray into an incinerator (incineration at 1,000 °C followed by treatment of
the off-gas recommended)
Oxides of nitrogen may be scrubbed out with alkaline solution.

Reference:

B.

Online Toxicology Data Network (TOXNET): Hazardous Substances Data Bank(HSDB), 2000

Other remarks
None

UNEP PUBLICATIONS

25

OECD SIDSACETANILIDE

2. PHYSICAL-CHEMICAL DATA
2.1

MELTING POINT (If more than one, identify the recommended value.)a) Preferred result
Value:
Decomposition:
Sublimation:
Method:GLP:
Remarks:
Reference:b)
Value:
Decomposition:
Sublimation:
Method:GLP:
Remarks:
Reference:c)Value:
Decomposition:
Sublimation:
Method:GLP:
Remarks:
Reference:

2.2

National Institute of Environmental Research (NIER), Korea (2001), Test of
Acetanilide melting point/melting range(tested by LGCI )= 113.6°C
Yes [ ] No [ ] Ambiguous [ ]Yes [ ] No [ ] Ambiguous [ ]Yes [ ] No [ ] ? [x]Hoechst AG : EG -Sicherhetsdatenblatt Acetanilide, 26, January, 1994

=114.3 °C
Yes [ ] No [ ] Ambiguous [ ]Yes [ ] No [ ] Ambiguous [ ]Yes [ ] No [ ] ? [x]Lide, D.R. (ed.): CRC Handbook of Chemistry and Physics. 71th ed. Boca Raton,
FL: CRC Press Inc., p. 4-6, 1990 - 1991

BOILING POINT (If more than one, identify the recommended value.)a) Preferred result
Value:
Pressure:
Decomposition:
Method:GLP:
Remarks:
Reference:b)
Value:
Pressure:
Decomposition:
Method:GLP:
Remarks:
Reference:

26=113.7 °C
Yes [ ] No [x] Ambiguous [ ]Yes [ ] No [x] Ambiguous [ ]OECD TG 102 (melting point/melting range)
Yes [ ] No [x] ? [ ]=304°C
at 760 mmHg
Yes [ ] No [x] Ambiguous [ ]OECD TG 103 “ Boiling point –Method according to Siwoloboff ”
Yes [ ] No [x] ?[ ]National Institute of Environmental Research (NIER), Korea(2001), Test of
Acetanilide boiling point, (tested by LGCI).

=305 °C
at 1,013 hPa
Yes [ ] No [ ] Ambiguous [ ]Yes [ ] No [ ] ?[x]Hoechst AG : EG -Sicherheitsdatenblatt Acetanilide, 26, January, 1994

UNEP PUBLICATIONSOECD SIDS
2.3

ACETANILIDEDENSITY (relative density) (Where applicable, indicate the relative density of the substance.)a) Preferred result
Type:
Value:
Temperature:
Method:GLP:
Remarks:
Reference:

b)
Type:
Value:
Temperature:
Method:GLP:
Remarks:
Reference:c)Type:
Value:
Temperature:
Method:GLP:
Remarks:
Reference:

2.4

Bulk density [ ]; Density [ ]; Relative Density [x]1.2190 g/cm 3
15 °C
Yes [ ] No [ ] ?[x]Lide, D.R. (ed.)., CRC Handbook of Chemistry and Physics. 71th ed. Boca Raton,
F.L., CRC Press Inc., p. 4-6, 1990-1991

Bulk density [ ]; Density [ ]; Relative Density [x]1.21 g/cm3
20 °C
Yes [ ] No [ ] ?[x]Hoechst AG: EG -Sicherheitsdatenblatt Acetanilide, 26, January, 1994

Bulk density [ ]; Density [ ]; Relative Density [x]1.2105 g/cm 3
4 °C
Yes [ ] No [ ] ?[x]Richardson, M.L. and Gangolli, S., The Dictionary of Substances and their
Effects, Royal Society of Chemistry, p. 19, 1995

VAPO UR PRESSURE (if more than one, identify the recommended value)a) Preferred result
Value:
Temperature:
Method:GLP:
Remarks:
Reference:b)
Value:
Temperature:
Method:GLP:
Remarks:
Reference:c)Value:
Temperature:
Method:GLP:
Remarks:
Reference:

0.002 hPa
20 °C
calculated [ ]; measured [ ]Yes [ ] No [ ] ?[x]IUCLID (International Uniform chemical Information Database) data set(Acetanilide;103-84-4), June, 1998
0.2 × 10-3 mmHg
25 °C
calculated [ ]; measured [x]Yes [ ] No [ ] ?[x]Daubert, T.E.; Danner, R.P.; Physical and Thermodynamic Properties of Purechemicals data compilation design institute for physical property data, American
institute of chemical engineers hemisphere pub. New York, NY., 4, 1989
1.22 × 10-3 mmHg
25 °C
calculated [ ]; measured [ ]Yes [ ] No [ ] ?[x]Online Toxicology Data Network (TOXNET): Hazardous Substances Data Bank(HSDB), 2000

UNEP PUBLICATIONS

27

OECD SIDSd)
Value:
Temperature:
Method:GLP:
Remarks:
Reference:

2.5

ACETANILIDE
0.207 × 10-3 mmHg (0.26 Pa)
25 °C
calculated [x]; measured [ ]Yes [ ] No [ ] ?[x]National Institute of Environment Research (NIER), Korea (2001), Estimation ofphysical/chemical properties and environmental fate of SIDS chemical

PARTITION COEFFICIENT log POW (if more than one, identify the recommended value)a) Preferred result
Log Pow:
Temperature:
Method:GLP:
Remarks:
Reference:b)
Log Pow:
Temperature:
Method:GLP:
Remarks:
Reference:c)
Log Pow:
Temperature:
Method:GLP:
Remarks:
Reference:=1.16
23 ± 1 °C
calculated [ ]; measured [x]Yes [x] No [ ] ?[ ]measured by OECD TG 107 (shake flask method)
National Institute of Environmental Research (NIER), Korea (2001), Test of
Acetanilide Partition Coefficient (n-octanol/water) (tested by KRICT)c)=1.16
25 ± 5 °C
calculated [ ]; measured [x]Yes [ ] No [ ] ?[x]1. Fujita, T., Iwasa, J. and Hansch, C., A New Substituent Constant, Derived
from Partition Coefficients, J. Am. Chem. Soc. 86, 5175-5180, 1964
2. Hansch, C., Leo, A. and Hoekman, D., Exploring QSAR – Hydrophobic,
Electronic, and Steric Constants. Washington, DC: American Chemical Society,p. 42, 1995

=1.10
25 C
calculated [x]; measured [ ]Yes [ ] No [ ] ?[x]estimated by KWOWIN model.
National Institute of Environment Research (NIER), Korea (2001), Estimation ofphysical/chemical properties and environmental fate of SIDS chemicals

2.6

WATER SOLUBILITY (if more than one, identify the recommended value)A.

Solubilitya) Preferred result
Value:
Temperature:
Description:

Method:GLP:
Remarks:
Reference:b)
Value:
Temperature:
Description:

28

4 g/l
20 °C
Miscible[ ]; Of very high solubility [ ];Of high solubility [ ]; Soluble [x]; Slightly soluble [ ];Of low solubility [ ]; Of very low solubility [ ]; Not soluble [ ]Yes [ ] No [ ] ? [x]Hoechst AG : EG -Sicherheitsdatenblatt Acetanilide, 26, January, 1994

6.390 g/l
25 °C
Miscible[ ]; Of very high solubility [ ];UNEP PUBLICATIONSOECD SIDSACETANILIDEOf high solubility [ ]; Soluble [x]; Slightly soluble [ ];Of low solubility [ ]; Of very low solubility [ ]; Not soluble [ ]Method:GLP:
Remarks:
Reference:

Yes [ ] No [ ] ?[x]Online Toxicology Data Network (TOXNET):Hazardous Substances Data Bank(HSDB), 2000

c)
Value:
Temperature:
Description:

GLP:
Remarks:
Reference:

B.

Online Toxicology Data Network (TOXNET): Hazardous Substances Data
Bank (HSDB), 2000

pH Value, pKa Valuea)
pH Value:
Concentration:
Temperature:
Method:GLP:
pKa value
Remarks:
Reference:

2.7

5.4 g/l25 °C
Miscible[ ]; Of very high solubility [ ];Of high solubility [ ]; Soluble [x]; Slightly soluble [ ];Of low solubility [ ]; Of very low solubility [ ]; Not soluble [ ]Yes [ ] No [ ] ?[x]=6.5, measured
4 g/L
20 °C
Yes [ ] No [ ] ?[x]= 0.5 at 25 °C
1. Hoechst AG : EG-Sicherheitsdatenblatt Acetanilide, 26, January, 1994
2. Online Toxicology Data Network (TOXNET): Hazardous Substances Data Bank(HSDB), 2000

FLASH POINT (liquids)a)
Value:
Type of test:
Method:GLP:
Remarks:
Reference:b)
Value:
Type of test:
Method:GLP:
Remarks:
Reference:c)Value:
Type of test:
Method:GLP:
Remarks:
Reference:

169 °C
Other
Closed cup [ ]; Open cup [ ]; Other [ ]Yes [ ] No [ ] ? [x]Online Toxicology Data Network (TOXNET): Hazardous Substances Data Bank(HSDB), 2000

174 °C
Other
Closed cup [ ]; Open cup [ ]; Other [ ]Yes [ ] No [ ] ? [x]Hoechst AG : EG -Sicherheitsdatenblatt Acetanilide, 26, January. 1994

173 °C
Other
Closed cup [ ]; Open cup [ ]; Other [ ]Yes [ ] No [ ] ? [x]Richardson, M.L. and Gangolli, S. The Dictionary of Substances and their Effects.
Royal Society of Chemistry, p. 19, 1995

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29

OECD SIDS
2.8

AUTO FLAMMABILITY (solid/gases)a)
Value:
Pressure:
Method:GLP:
Remarks:
Reference:

2.9

Method:GLP:
Remarks:
Reference:

Method:GLP:
Remarks:
Reference:

Hoechst AG : EG -Sicherheitsdatenblatt Acetanilide, 26, January, 1994

Extremely flammable [ ]; Extremely flammable - liquified gas [ ];Highly Flammable [ ]; Flammable [ ]; Non flammable [ ];Spontaneously flammable in air [ ]; Contact with water liberates highly flammablegases [ ]; Other [x]Yes [ ] No [ ] ?[x]Brennzahl ; 1(Non combustible)
Hoechst AG : EG -Sicherheitsdatenblatt Acetanilide, 26, January, 1994

Explosive under influence of a flame[ ];More sensitive to friction than m-dinitrobenzene [ ];More sensitive to shock than m-dinitrobenzene [ ]; Not explosive [ ];Other [x]Yes [ ] No [ ] ?[x]Splash explosion class: ST1
Hoechst AG : EG -Sicherheitsdatenblatt Acetanilide, 26, January, 1994OXIDIZING PROPERTIES
Results:

Method:GLP:
Remarks:
Reference:

2.12

Yes [ ] No [ ] ? [x]EXPLOSIVE PROPERTIES
Results:

2.11

540 °C1013 hPa

FLAMMABILITYa)
Results:

2.10

ACETANILIDE

Maximum burning rate equal or higher than reference mixture [ ];Vigorous reaction in preliminary test [ ];No oxidizing properties [x]; Other [ ]Yes [ ] No [ ] ?[ ]No studies located, but not expected from structure to have oxidizing properties.

OXIDATION: REDUCTION POTENTIAL(Where applicable, indicate the redox potential and the conditions under which it was measured.)
Value:
Method:GLP:
Remarks:

30

Not applicable since acetanilide is not expected to have oxidizing properties
Yes [ ] No [ ] ?[ ]UNEP PUBLICATIONSOECD SIDSACETANILIDE

2.13

ADDITIONAL DATA

A.

Partition co-efficient between soil/sediment and water (Kd)(a)
Value:
Method:GLP:
Remarks:
Reference:(b)
Value:
Method:GLP:
Remarks:
Reference:B.

K OC : 27
measuredYes [ ] No [ ] ? [x]Very high mobility in soil.
1. Briggs,G.G.; Theoretical and Experimental relationships between soil adsorption,octanol-water partition coefficients water solubilities, bioconcentration factors andthe parachor, J; Agric. Food Chem.; 29:1050-9
2. Online Toxicology Data Network (TOXNET): Hazardous Substances Data Bank(HSDB), 2000

K OC : 38
estimated by PCKOCWIN v1. 66
Yes [ ] No [ ] ?[x]very high mobility in soil
National Institute of Environment Research (NIER), Korea (2001), Estimation ofphysical/chemical properties and environmental fate of SIDS chemicals

Other data
(e.g. Henry's Law constant, fat solubility, surface tension (of aqueous solution), adsorption/desorption on soil,
particle size distribution, etc.

1. Henry’s Law Constanta)
Value :
Method :Remarks :Reference:b)
Value :
Method :Remarks :Reference:c)Value :
Method :Remarks :Reference:

5.57 × 10-9 atm m3/mole at 25 °C
estimatedcalculated by fragment constant estimation method.
Meylan, W.M. and P.H. Howard., Bond contribution method for estimating
Henry's law constants. Environ. Toxicol. Chem. 10:1283-1293, 1991
5.3 × 10-8 atm m3/mole at 25 °C
estimatedcalculated by vapour pressure /water solubility method.
Mackay, D. and W.J. Shiu. critical review of Henry's law constants for chemicals ofenvironmental interest. J. Phys. Chem. Ref. Data 10:1175-1199, 1981
6.17 × 10-9 atm m3/mole at 25 °C
estimatedcalculated by HENRYWIN Version 3.10
National Institute of Environment Research (NIER), Korea (2001), Estimation ofphysical/chemical properties and environmental fate of SIDS chemicals

2. Volatilization from Soil/ Watera)
Results:
Remarks:
Reference:

Volatilization from Moist soil surfaces is not expected to be important.(1)Volatilization from dry soil surfaces may not exist (2)(1) given an estimated Henry’s law constant of 6.2 ×10-9 atm m 3/mole.
(2) based on the exptrapolated vapor pressure of 1.22 ×10-3 mmHg.
Online Toxicology Data Network (TOXNET): Hazardous Substances Data Bank(HSDB), 2000

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OECD SIDSb)
Results:
Remarks:
Reference:

32

ACETANILIDE
Nonvolatile from water surfaces
based on an estimated Henry's Law constant of 6.2 ×10-9 atm m3 /mole (by use of afragment constant estimation method).
Online Toxicology Data Network (TOXNET): Hazardous Substances Data Bank(HSDB), 2000

UNEP PUBLICATIONSOECD SIDS
3.

ACETANILIDEENVIRONMENTAL FATE AND PATHWAYS[Reporting of studies should give the test method, test conditions (laboratory versus field studies), test results(e.g. % degradation in specified time period) and reference information on breakdown products (transient andstable) should be provided when available.]

3.1

STABILITY

3.1.1

PHOTODEGRADATIONa) Preferred result
Type:
Air [x]; Water [ ]; Soil [ ]; Other [ ]Light source :Sunlight [ ]; Xenon lamp [ ]; Other [ ]Light spectrum :nm
Relative intensity:(based on intensity of sunlight)
Spectrum of substance:[e.g. lambda (max.)( > 29 5nm) and epsilon (max) or epsilon (295 nm)]nm
Concentration of Substance :Temperature:
25 °C
Direct photolysis:
Half life:
Degradation:% (weight/weight) after(exposure time)
Quantum yield:
Indirect Photolysis:
Type of sensitizer:
OH radical
Concentration of sensitizer:0.5 × 106 molecule/ m3
Rate constant (radical):12.52 × 10-12 cm3/molecule-sec
Degradation:
ca. 50 % after 1.282 days (31 hours)
Method:calculated [x]; measured[ ]GLP:Yes [ ] No [ ] ?[x]Test substance:
purity:Remarks:
an estimated EPIWIN model
Reference:
National Institute of Environment Research (NIER), Korea (2001), Estimation ofphysical/chemical properties and environmental fate of SIDS chemicals*3.1.2STABILITY IN WATERa) Preferred result
Type:
Half life:
Degradation:
Method:GLP:Test substance:
Remarks:
Reference:

3.1.3

Abiotic (hydrolysis) [x]; biotic (sediment)[ ]> 1 year
3.91 %, 1.085 % and 4.78 % at pH 4.0, pH 7.0 and pH 9.0 at 50 °C ( 5 days)
OECD TG 111
Yes [ ] No [x] ?[ ]Aldrich (39722-9), purity : 99.5 %Since the chemical is not degradable less than 10 % in this test condition, It is
presumably stable in water.
National Institute of Environmental Research (NIER), Korea (2001), Test of
Acetanilide Hydrolysis as a Function of pH, (tested by LGCI)STABILITY IN SOIL
Type:Radiolabel:
Concentration:
Soil temperature:
Soil humidity:
Soil classification:
Content of clay etc.:
Organic Carbon:
Soil pH:
Cation exchange capacity:
Microbial biomass:

Field trial [ ]; Laboratory [ ]; Other [ ]Yes [ ] No [ ] ? [ ]mg/kg°Cof field capacity
DIN19863 [ ]; NF X31-107 [ ]; USDA [ ]; Other [ ]YearClay %, Silt %, Sand %%m mol/kg

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OECD SIDS
Dissipation time:
Dissipation:
Method:GLP :Test substance:
Remarks:
Reference:

3.2

ACETANILIDE
DT 50:DT 90:% after day(e.g. OECD, other (with the year of publication or updated of the method used))Yes [ ] No [ ] ? [ ]No studies locatedMONITORING DATA (ENVIRONMENTAL)
Note that data on biological effects monitoring, including biomagnification, and biotransformation and kinetics
in environmental species are to be reported in section 4.7 and 4.8, respectively. Nonetheless, concentration invarious biota should be reported here. Data on concentration in the workplace or indoor environment should
be reported under item 5.11.
Type of M easurement:
Media:
Results:
Remarks:
Reference:

Background [ ]; At contaminated site [ ]; Other [ ]No monitoring data of acetanilide were given

3.3

TRANSPORT AND DISTRIBUTION BETWEEN ENVIRONMENTALCOMPARTMENTS INCLUDING ESTIMATED ENVIRONMENTAL
CONCENTRATIONS AND DISTRIBUTION PATHWAYS

3.3.1

TRANSPORTa)
Type :Media :
Method :Results :Remarks :Reference:

3.3.2

THEORETICAL DISTRIBUTION (FUGACITY CALCULATION)a) Preferred result
Media:
Method:Results:

Remarks:
Reference:b)
Media:

34

Adsorption [ ]: Desorption [ ]; Volatility [x]: Other [ ]Water-airan estimated by WVOLWIN model.
River (Half-life) :1.465 years, LAKE (Half-life) : 16 years
base on an estimated Molecular Weight (135.17 g/mole), water solubility (4000ppm), vapor pressure (0.0015 mmHg). Henry's Law Constant (5.3E-008 atm
m 3/mole)
National Institute of Environment Research (NIER), Korea (2001), Estimation ofphysical/chemical properties and environmental fate of SIDS chemicals

Air-biota [ ]; Air-biota-sediment -soil-water [x]; Soil-biota [ ];Water-air [ ]; Water-biota [ ]; Water-soil [ ]; Other [ ]Fugacity level I [x]; Fugacity level II [ ]; Fugacity level III [ ];Fugacity level IV[ ]; Other (calculation) [ ]; Other (measurement)[ ]In air
0.13 %
In water
98.57 %
In soil
1.26 %In sediment 0.02 %In biota/suspended sediment : 0.02 %The EQC model was used for calculation.
National Institute of Environment Research (NIER), Korea (2001), Estimation ofphysical/chemical properties and environmental fate of SIDS chemicals

Air-biota [ ]; Air-biota-sediment -soil-water [x]; Soil-biota [ ];Water-air [ ]; Water-biota [ ]; Water-soil [ ]; Other [ ]UNEP PUBLICATIONSOECD SIDS
Method:Results:

Remarks:
Reference:

3.4

Fugacity level I [ ]; Fugacity level II [ ]; Fugacity level III [x];Fugacity level IV [ ]; Other (calculation) [ ]; Other (measurement)[ ]In air
0.027 %
In water
47.20 %
In soil
52.7 %In sediment 0.108 %The EQC model was used for calculation.
National Institute of Environment Research (NIER), Korea (2001), Estimation ofphysical/chemical properties and environmental fate of SIDS chemicals

IDENTIFICATION OF MAIN MODE OF DEGRADABILITY IN ACTUAL USE
Results:
Remarks:
Reference:

3.5

ACETANILIDE

No data available

BIODEGRADATIONa) Preferred result
Type:aerobic [x]; anaerobic [ ]Inoculum:
adapted [ ]; non-adapted [x]; Activated sludge
Concentration of the chemical: related to COD [ ]; DOC [ ]; test substance [x]100 mg/L
Medium:water [x]; water-sediment [ ]; soil [ ]; sewage treatment [ ]Degradation:(percentage reduction/exposure time)
68.7 % after 14 days incubation
Results:(see OECD Guidelines) readily biodeg. [x]; inherently biodeg. [ ]; under test
condition no biodegradation observed [ ], other [ ]Kinetic (e.g. Zahn-Wellens-Test)% in(time)
Method:MITI Test, Japan
GLP:
Yes [ ] No [ ] ? [x]Test substance:
purity:Remarks:
Sludge 30 mg/L
Reference:
MITI, Japan, Biodegradation and Bioaccumulation Data of Existing Chemicals
based on the CSCL Japan: Published by Japan Chemical Industry Ecology-Toxicity& Information Center, p.3-21, October, 1992b)
Type:
Inoculum:aerobic [x]; anaerobic [ ]adapted [ ]; non-adapted [x]; .
Predominantly domestic sewage
Concentration of the chemical: 2.4 mg/L related to COD [ ]; DOC [ ]; test substance [x]Medium:water [x]; water-sediment [ ]; soil [ ]; sewage treatment [ ]Degradation:> 90 % after 20 days as BOD
Results:
readily biodeg. [x]; inherently biodeg. [ ];under test condition no biodegradation observed [ ], other [ ]Kinetic (e.g. Zahn-Wellens-Test)% in(time)
Method:OECD Guideline 301 D ‘Ready Biodegradability: Closed Bottle Test.
GLP:
Yes [ ] No [ ] ? [x]Test substance:
purity:Remarks:[In the case of poorly soluble chemicals, treatment given (nature, concentration,
CAS number, name and percentage of degradation products etc.)]:Reference:
IUCLID (International Uniform chemical Information Database) data set(Acetanilide;103-84-4), June, 1998

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OECD SIDSACETANILIDE

c)
Type:
aerobic [x]; anaerobic [ ]Inoculum:
adapted [x]; non-adapted [ ]; Activated sludge
Concentration of the chemical: 200mg/L related to COD [x]; DOC [ ]; test substance [ ]Medium:water [x]; water-sediment [ ]; soil [ ]; sewage treatment [ ]Degradation:(percentage reduction/exposure time)
94.5 % after 5 days as COD
Results:
readily biodeg. [x]; inherently biodeg. [ ];under test condition no biodegradation observed [ ], other [ ]Kinetic (e.g. Zahn-Wellens-Test)% in(time)
Method:[e.g. OECD, other (with the year of publication or updating of the method used)].
GLP:
Yes [ ] No [ ] ? [x]Test substance:
purity:Remarks:[In the case of poorly soluble chemicals, treatment given (nature, concentration,
CAS number, name and percentage of degradation products etc.)]:Reference:
Pitter, P. Determination of Biological degradability of Organic Substances.
Water Research.10, 231-235, 1976d)Type:
aerobic [x]; anaerobic [ ]Inoculum:
adapted [ ]; non-adapted [x]; River Water and sludge
Concentration of the chemical: 6-7 mg/L related to COD [ ]; DOC [ ]; test substance [x]Medium:water [x]; water-sediment [ ]; soil [ ]; sewage treatment [ ]Degradation:(percentage reduction/exposure time)
100 % after 43 days incubation
Results:
readily biodeg. [x]; inherently biodeg. [ ];under test condition no biodegradation observed [ ], other [ ]Kinetic (e.g. Zahn-Wellens-Test)% in(time)
Method:River Die-Away
GLP:
Yes [ ] No [ ] ? [x]Test substance:
purity:Remarks:[In the case of poorly soluble chemicals, treatment given (nature, concentration,
CAS number, name and percentage of degradation products etc.)]:Reference:
El-Dib, M.A. and O.A. Aly. Persistence of some Phenylamide Pesticides in the
Aquatic Environment-III. Biological Degradation. Water Res. 10, 1055-9, 1976

3.6

BOD5, COD OR RATIO BOD5/COD
BOD 5Method:Concentration:
Value:
GLP:

related to COD [ ]; DOC [ ]; Test substance [ ]mg O2/lYes [ ] No [ ] ? [ ]CODMethod:Value:GLP:

mg O2/gYes [ ] No [ ] ? [ ]Ratio BOD5/COD:
Remarks:
Reference:

3.7

No data available

BIOACCUMULATIONa)Preferred result
Species:
Exposure period:

Temperature(°C):°C

Concentration:

36

UNEP PUBLICATIONSOECD SIDS
BCF:
Elimination:
Method:Type of test:
GLP:
Test substance:
Remarks:
Reference:

ACETANILIDE
1.56
Yes [ ] No [ ] ? [ ]Calculated from experimental Pow (1.16).
calculated [x]; measured [ ]static [ ]; semi-static [ ]; flow -through [ ]; other (e.g. field test) [ ]Yes [ ] No [ ] ? [ ]purity:BCFWIN Model Version 2.14
National Institute of Environment Research(NIER), Korea(2001), Estimation ofphysical/chemical properties and environmental fate of SIDS chemicalsb)Species:
Exposure period:

Temperature(°C):
Concentration:
BCF:
Elimination:
Method:Type of test:
GLP:
Test substance:
Remarks:
Reference:

Carassius auratus (goldfish)°C
1.23
Yes [ ] No [ ] ? [x]calculated [x]; measured [ ]static [ ]; semi-static [ ]; flow -through [ ]; other (e.g. field test) [ ]Yes [ ] No [ ] ? [x]purity:Nakatsugawa, T. and P. A., Nelson. Studies on insecticide detoxication in
invertebrates; an enzymological approach to the problem of biological magnification,
in “Environmental Toxicological of Pesticides”, edited by Matsumura, F. et al.,Academic Press, New York and London, pp. 501-524, 1972.

3.8

ADDITIONAL REMARKSA.

Sewage treatment (information on treatability of the substance)
Results:
Remarks:
Reference:B.

No data available

Other information [information that will help to focus the exposure assessment (either qualitative or
quantitative)]
No data available

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OECD SIDSACETANILIDE4.

ECOTOXICITY

4.1

ACUTE/PROLONGED TOXICITY TO FISH(a) Preferred Result
Type of test:
Species :Exposure period:
Results:
Analytical monitoring:
Method:GLP:Test substance:
Remarks:
Reference:(b)
Type of test:
Species :Exposure period:
Results:
Analytical monitoring:
Method:GLP:Test substance:
Remarks:
Reference :(c)Type of test:
Species :Exposure period:
Results:
Analytical monitoring:
Method:GLP:Test substance:
Remarks:
Reference:(d)Type of test:
Species :Exposure period:
Results:
Analytical monitoring:
Method:GLP:Test substance:
Remarks:
Reference :38

static [x];semi-static[ ];flow -through[ ]; other (e.g.field test) [ ]open system[ ]; closed system [ ]Oryzias latipes (medaka, Fresh water)
96 hr
LC50 (96 h) >100 mg/L
Yes[ ] No[x] ? [ ]other: Testing of industrial chemicals (Ministry of Environment), Korea
Yes[x] No[ ]?[ ]Purity > 99.9 %Limit test at 100 mg/L showed no mortality.
Ministry of Environment (MOE), Korea (1997), Toxicity evaluation of existingchemicals (X)(ES-010)

static [x]; semi-static[ ];flow-through[ ]; other (e.g. field test) [ ]open system[ ]; closed system [ ]Lepomis macrochirus (Bluegill sunfish, fresh water)
96 hr
LC50 (96 h) = 100 mg/L
Yes[ ] No[x] ? [ ][e.g. OECD, other (with the year of publication or updating of the method used)]Yes[ ] No[ ] ? [x]97 % acetanilide
Dawson, G.W., A.L. Jennings, D.Drozdowski, E.Rider. The acute toxicity of 47
industrial chemicals to fresh and saltwater fishes. J. Hazard. Mater. 1, 303-318,
1975/ 1977

static [x]; semi-static[ ]; flow-through[ ]; other (e.g. field test) [ ]open system[ ]; closed system [ ]Leuciscus idus (Ide, fresh water)48 hr
LC50 (48 h) = 200 mg/L
Yes[ ] No[x] ? [ ][e.g. OECD, other(with the year of publication or updating of the method used)]Yes[ ] No[ ] ? [x]purityIUCLID (International Uniform chemical Information Database) data set(Acetanilide;103-84-4), June, 1998

static [x]; semi-static[ ];flow -through[ ]; other (e.g. field test) [ ]open system[ ]; closed system [ ]Menidia beryllina (tidewater silverside, sea water)
96 hr
LC50 (96 h) = 115 mg/L
Yes[ ] No[x] ? [ ][e.g. OECD, other (with the year of publication or updating of the method used)]Yes[ ] No[ ] ? [x]purityDawson, G.W., A.L. Jennings, D. Drozdowski, E. Rider. The acute toxicity of 47
industrial chemicals to fresh and saltwater fishes. J. Hazard. Mater. 1, 303-318,
1975/ 1977.

UNEP PUBLICATIONSOECD SIDSACETANILIDE

4.2

ACUTE TOXICITY TO AQUATIC INVERTEBRATESA.

Daphnia(a) Preferred Result
Type of test:
Species :Exposure period:
Results:
Analytical monitoring:
Method:GLP:Test substance:
Remarks:
Reference :B.

Ministry of Environment (MOE), Korea(2001), The Acute toxicity of Acetanilide
to Aquatic Invertebrate (tested by KRICT)

Other aquatic organisms
Type of test:
Species :Exposure period:
Results:
Analytical monitoring:
Method:GLP:Test substance:
Remarks:
Reference :4.3

static [x]; semi-static[ ];flow -through[ ]; other (e.g. field test) [ ]open system[ ]; closed system [ ]Daphnia magna
48 hr
EC50 (48 h) > 100 mg/L
Yes[x] No[ ] ? [ ]Other: Testing of industrial chemicals (Ministry of Environment), Korea
Yes[x] No[ ] ? [ ]Purity > 99.95 %static [ ]; semi-static[ ];flow-through[ ]; other (e.g. field test) [ ]open system[ ]; closed system [ ]Yes[ ] No[ ] ? [ ][e.g. OECD, other (with the year of publication or updating of the method used)]Yes[ ] No[ ] ? [ ]No data available

TOXICITY TO AQUATIC PLANTS
Algae(a) Preferred Result
Species :End point:
Exposure period:
Results:
Analytical monitoring:
Method:GLP:Test substance:
Remarks:
Reference :4.4

Selenastrum capricornutum
Biomass[x ] ; Growth rate [ ]; Other[ ]72 hr
EC50 (72 h) = 13.5 mg/L , NOEC < 4 mg/L
Yes[x] No[ ]OECD Guideline 201
Yes[x] No[ ] ? [ ]Purity > 99.95 %open-system[ ] ; closed-system[ ]Ministry of Environment (MOE), Korea(2001), The toxicity of Acetanilide to
Aquatic plant s (algae) (tested by KRICT)TOXICITY TO BACTERIA
A.

Bacteria(a)Type of test:
Species :Exposure period:
Results:
Analytical monitoring:
Method:Aquatic [x]; Field[ ]; Soil [ ]; Other[ ]Activated sludge
3 hr
EC50 (3 h) = 2589 mg/L
Yes[ ] No[ ] ? [x]Test for Inhibition of Oxygen Consumption by Activated Sludge, ISO 8192

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OECD SIDS
GLP:
Test substance:
Remarks:
Reference:(b)
Type of test:
Species :Exposure period:
Results:
Analytical monitoring:
Method:GLP:Test substance:
Remarks:
Reference:

ACETANILIDE
Yes[ ] No[ ] ? [x]purityIUCLID (International Uniform chemical Information Database) data set(Acetanilide;103-84-4), June, 1998

Aquatic [x]; Field [ ] Soil [ ]; Other [ ]Photobacterium phosphoreum (Bacteria)
30 minEC50 (30 min) = 282.4 mg/L
Yes[ ] No[ ] ? [x]other: no description
Yes[ ] No[ ] ? [x]purityIUCLID (International Uniform chemical Information Database) data set(Acetanilide; 103-84-4), June, 1998

4.5

CHRONIC TOXICITY TO AQUATIC ORGANISMS

4.5.1

CHRONIC TOXICITY TO FISH
No data available

4.5.2

CHRONIC TOXICITY TO AQUATIC INVERTEBRATESNo data available

4.6

TOXICITY TO TERRESTRIAL ORGANISMS

4.6.1

TOXICITY TO SOIL DWELLING ORGANISMS
No data available

4.6.2

TOXICITY TO TERRESTRIAL PLANTS
No data available

4.6.3

TOXICITY TO OTHER NON-MAMMALIAN TERRESTRIAL SPECIESNo data available

4.7

BIOLOGICAL EFFECTS MONITORING
No data available

4.8

BIOTRANSFORMATION AND KINETICSNo data available

4.9

40

ADDITIONAL REMARKSUNEP PUBLICATIONSOECD SIDSACETANILIDE5.

TOXICITY

5.1

ACUTE TOXICITY

5.1.1

ACUTE ORAL TOXICITY(a) Preferred Result
Type:
Species/strain
Value:

Discriminating dose :Method:GLP:Test substance:
Remark:Reference:

(b)
Type:
Species/strain
Value:
Discriminating dose :Method:GLP:Test substance:
Remark:Reference:

(c)
Type:
Species/strain
Value:
Discriminating dose :Method:GLP:Test substance:
Remark:Reference:

(d)
Type:
Species/strain
Value:
Discriminating dose :Method:GLP:Test substance:
Remark:LD 0[ ]; LD 50[x]; LD100[ ]; LDLo[ ]; Other [ ]Rat2033 mg/kg for male1893 mg/kg for female
1959 mg/kg for male/female
maximum dose limit 2000 mg/kg bw
OECD Guideline 401
Yes[ ] No[ ] ? [x]commercial available purity : unknown
Symptoms: ptosis, respiratory effects, lethargy, abnormal gait, lacrimation
Van den Heuvel, M.J., D.G Clark, R.J. Fielder, P.P. Koundakjian, G.J.A. Oliver,
D. Pelling, N.J. TomLinson, A.P. Walker. The International validation of a fixeddose procedure as an alternative to the classical LD 50 test. Food Chem. Tox. 28(7), 469-482 (1990)

LD 0[ ]; LD 50[ ]; LD 100[ ]; LDLo[ ]; Other [x]Rat
Harmful (4 lab), Unclassified (21 lab) : EC classification
5, 50, 500, 2000 mg/kg bw
Fixed-dose method (OECD TG 420)
Yes[x] No[ ] ?[ ]Commercial purity : unknown
Van den Heuvel, M.J., D.G Clark, R.J. Fielder, P.P. Koundakjian, G.J.A. Oliver,
D. Pelling, N.J. TomLinson, A.P. Walker. The International validation of a fixeddose procedure as an alternative to the classical LD 50 test. Food Chem. Tox. 28(7), 469-482 (1990)

LD 0[ ]; LD 50[x]; LD 100[ ]; LDLo[ ]; Other [ ]Rat/Wistar
980 mg/kg bw for male
1350 mg/kg bw for female
unknow n
Other
Yes[ ] No[ ] ?[x]Commercial purity: highest purity available
Hasegawa, R., Nakaji, Y., Kurokawa, Y. and Tobe, M. Acute toxicity on 113
environmental chemicals. Sci. Rep. Res. Inst. Tohoku Univ., C, 36, 10-16,1989

LD 0[ ]; LD 50[x]; LD 100[ ]; LDLo[ ]; Other [ ]Rat/Sprague-Dawley (female)
1107 (mg/kg)
the dose for next animal was increased or decreased by a factor of 1.3
Up and Down method (OECD TG 425)
Yes[ ] No[ ] ?[x]Commercial purity : unknown

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OECD SIDS
Reference:

(e)
Type:
Species/strain
Value:
Discriminating dose :Method:GLP:Test substance:
Remark:Reference:

(f)
Type:
Species/strain
Value:
Discriminating dose :Method:GLP:Test substance:
Remark:Reference:

(g)
Type:
Species/strain
Value:
Discriminating dose :Method:GLP:Test substance:
Remark:Reference:

(h)
Type:
Species/strain
Value:
Discriminating dose :Method:GLP:Test substance:
Remark:Reference:

(i)
Type:
Species/strain
Value:
Discriminating dose :Method:GLP:Test substance:
Remark:42

ACETANILIDE
Yam, J., Reer, P. J. and Bruce, R.D. Comparison of the up and down method andthe fixed-dose procedure for acute oral toxicity tes ting. Food. Chem. Toxicol. 29,
259-263, 1991

LD 0[ ]; LD 50[ ]; LD 100[ ]; LDLo[ ]; Other [x]Rat/Sprague-Dawley (female)unclassified (EC classification)
5, 50, 500, 2000 mg/kg bw
Fixed-dose method (OECD TG 420)
Yes[ ] No[ ] ?[x]Commercial purity : unknown
Yam, J., Reer, P. J. and Bruce, R.D. Comparison of the up and down method andthe fixed-dose procedure for acute oral toxicity testing. Food. Chem. Toxicol. 29,
259-263, 1991

LD 0[ ]; LD 50[x]; LD100[ ]; LDLo[ ]; Other [ ]Rat1700 (mg/kg)
unknown
Other
Yes[ ] No[x] ? [ ]Acetanilide purity : unknown
Hart, E.R. The toxicity and analgetic potency of salicylamide and certain of its
derivatives as compared with established analgetic-antipyretic drugs. J. Pharm.
Exp. Ther. 89, 205-209 (1947)

LD 0[ ]; LD 50[x]; LD100[ ]; LDLo[ ]; Other [ ]Rat
800 (mg/kg)
Unknown
Unknown
Yes[ ] No[x] ? [ ]Acetanilide
Smith, P.K. and W.E Hambourger. The ratio of the toxicity of acetanilide to its
antipyretic activity in rats. J. Pharm. Exp. Ther. 54, 159-161 (1935)

LD 0[ ]; LD 50[x]; LD100[ ]; LDLo[ ]; Other [ ]Mouse/Albino (QS strain)
1210 (mg/kg)
Unknown
O therYes[ ] No[x] ? [ ]Prepared by standard method or Commercially obtained, purity : unknown
Starmer, G.A. S. McLean, J. Thomas. Analgesic potency and acute toxicity of
substituted anilides and benzamides. Tox. Appl. Pharm. 19, 20-28 (1971)

LD 0[ ]; LD 50[ ]; LD 100[ ]; LDLo:[x]; Other [ ]Rabbit1500 (mg/kg)
550, 600, 700, 1200, 1500, 1600 mg/kg bw
Other
Yes[ ] No[x] ? [ ]Test substance dissolved in ethanol, in mucilage of acacia
Symptoms: paralysis; death 4 days after application

UNEP PUBLICATIONSOECD SIDS
Reference:
(j)
Type:
Species/strain
Value:
Discriminating dose :Method:GLP:Test substance:
Remark:Reference:

5.1.2

ACETANILIDE
Higgins, J.A. & H.A McGuigan. The influence of caffeine on the effects ofacetanilide. J. Pharm. Exp. Ther. 49, 466-478, 1933
LD 0[ ]; LD 50[ ]; LD 100[ ]; LDLo [x]; Other [ ]Guinea pig
about 1400 (mg/kg)
Unknown
Other
Yes[ ] No[x] ? [ ]Acetanilide purity : unknown
Munch, J.C. H.J. Pratt, L.M. Acetanilide studies I. Acute toxicity. J. Am. Pharm.
Assoc., Sci. Ed. 30, 91-98 (1941)

ACUTE INHALATION TOXICITY
No data available

5.1.3

ACUTE DERMAL TOXICITY
No data available

5.1.4

ACUTE TOXICITY, OTHER ROUTES OF ADMINISTRATION
(a)
Type:
Species/strain
Route of Administration:
Exposure time:
Value:
Method:GLP:Test substance:
Remarks:
Reference:

(b)
Type:
Species/strain
Route of Administration:
Exposure time:
Value:
Method:GLP:Test substance:
Remarks:
Reference:

(c)
Type:
Species/strain
Route of Administration:
Exposure time:
Value:
Method:LC0[ ]; LC 50[ ]; LC100[ ]; LCLo [ ]; Other [ ]LD 0[ ]; LD 50[x]; LD 100[ ]; LDLo [ ]; Other [ ]Rat/Sprague-Dawley (4 female rats/group)i.m.[ ]; i.p [x]; i.v. [ ]; infusion [ ]; s.c. [ ]; Other [ ]540 (mg/kg)
Other
Yes[ ] No[x] ?[ ]Merk acetanilide (recrystallized from water)
Argus, M.F. M.P. Newell, J.T. Henderson, F.E. Ray. Antipyretic and toxicity
studies with acetanilide and o-,m-, and p-chloroacetanilide. J. Am. Pharm. Assoc.
48, 204-207 (1959)
LC0[ ]; LC 50[ ]; LC100[ ]; LCLo [ ]; Other [ ]LD 0[ ]; LD 50[x]; LD 100[ ]; LDLo [ ]; Other [ ]Mouse/C57b1/6
i.m.[ ]; i.p [x]; i.v. [ ]; infusion [ ]; s.c. [ ]; Other [ ]715 (mg/kg)
Other
Yes[ ] No[x] ?[ ]Merk acetanilide (recrystallized from water)
Argus, M.F. M.P. Newell, J.T. Henderson, F.E. Ray. Antipyretic and toxicity
studies with acetanilide and o-,m-, and p-chloroacetanilide. J. Am. Pharm. Assoc.
48, 204-207 (1959)

LC0[ ]; LC 50[ ]; LC100[ ]; LCLo [ ]; Other [ ]LD 0[ ]; LD 50[ ]; LD 100[ ]; LDLo [x]; Other [ ]Cati.m.[ ]; i.p [ ]; i.v. [x]; infusion [ ]; s.c. [ ]; Other [ ]8 mg/kg

UNEP PUBLICATIONS

43OECD SIDSACETANILIDE

GLP:
Test substance:
Remarks:
Reference:

Yes[ ] No[x] ?[ ]Munch, J.C. H.J. Pratt, L.M. Acetanilide studies I. Acute toxicity. J. Am. Pharm.
Assoc. Sci. Ed. 30, 91-98 (1941)

5.2

CORROSIVENESS/IRRITATION

5.2.1

SKIN IRRITATION(a) Preferred Result
Species/strain
Results:
Classification:
Method:GLP:Test substance:
Remarks:
Reference:

5.2.2

EYE IRRITATION/CORROSION(a) Preferred Result
Species/strain
Results:
Classification:
Method:GLP:Test substance:
Remarks:
Reference:

5.3

RabbitHighly corrosive [ ] ; corrosive [ ]; Highly irritating [ ]; Irritating [ ]; Moderate
irritating [ ]; Slightly irritating [ ]; Not irritating [x]Highly corrosive (cause severe burns) [ ]; Corrosive (caused burns) [ ];Irritating [ ]; Not irritating [x]OECD Guideline 404 "Acute Dermal Irritation /Corrosion" , 1990
Yes[x] No[ ] ?[ ]Purity 97.8 %Labeling not required
Hoechst AG, Unpublished reports. Ber. 90,1295 (1991)

RabbitHighly corrosive [ ] ; corrosive [ ]; Highly irritating [ ]; Irritating [ ];Moderate irritating [ ]; Slightly irritating [x]; Not irritating [ ]Irritating [ ]; Not irritating [ ]; Risk of serious damage to eyes [ ]OECD Guide line 405 "Acute Eye Irritation/Corrosion" , 1990
Yes [x] No [ ] ? [ ]Purity 97.8 %Labelling not required
Hoechst AG, Unpublished reports. Ber. 90, 1336 (1990)

SKIN SENSITIZATION
no data available

5.4

REPEATED DOSE TOXICITY(a) Preferred Result
Species/strains:
Rat / Sprague-Dawley
Sex:
Female [ ]; Male [ ]; Male/Female [x]; No data [ ]Route of administration:
Oral (gavage)
Exposure period:
male : 30 days, female : from 2 weeks before mating to the day 3 of lactation
Frequency of treatment:
Once a day
Post exposure observation period:
1 day
Dose:
0, 22, 67, 200, 600 mg/kg/day
Control group:
Yes [x]; No [ ]; No data [ ]; Concurrent no treatment [ ]; Concurrent vehicle [x];Historical [ ]NOAEL:< 22 mg/kg bw/day for both sexes
LOAEL:
22 mg/kg bw/day for both sexes
Results: Male :The mean body weight gains at day 0 and 4 of lactation of 600 mg/kg females
were significant ly lower than those of controls. The mean food consumption of67, 200, and 600 mg/kg males and females was significantly reduced at day 1. The
incidence rate of decreased locomotor activity (600, 200 mg/kg), reddish tear (600mg/kg), salivation (600, 200 mg/kg) and cyanosis (600, 67 mg/kg) weresignificantly increased in male rats. In female, cyanosis and decreasing locomotor

44

UNEP PUBLICATIONSOECD SIDS

Method:GLP:Test substance:
Reference:

ACETANILIDE
activity were found during premating period and cyanosis were found during
pregnancy and lactation period at 600 mg/kg exposure group. In males there wassignificant decrease in HGB, HCT and MCHC value at all dose group hyperplasiaof spleen and bone marrow, hematological changes. At 600 mg/kg, those values of
AST, ALT, BUN, T-BIL, ALB, Calcium and A/G ratio in males were increased
significantly. There was also significant increase in BUN, T-BIL and decrease in
Na at 200 mg/kg. Four females at 600 mg/kg died at the day 21, 22 and 23 ofpregnancy and the day 4 of lactation. Increased absolute/relative spleen weight (at67, 200, 600 mg/kg) , relative liver weight (at 200, 600 mg/kg) andabsolute/relative spleen weight (at 600 mg/kg) were noted in males. Decreased
thymus weight at 200 mg/kg (absolute) and 600 mg/kg (absolute and relative),increase in relative brain wt (at 200, 600 mg/kg), kidney (200 mg/kg),
absolute/relative ovary and spleen wt (at 600 mg/kg), relative heart wt (600mg/kg) were noted in females. There was increase in hyperplasia/red pulp ofspleen and hyperplasia/bone marrow of fumer at 22, 67, 200 and 600 mg/kg in
both sexes.
OECD TG 422
Yes [x]; No [ ]; ? [ ]Source : Aldrich Chemical Co. purity ; 97 %Ministry of Environment (MOE), Korea (2001), Combined Repeated DoseToxicity with the Reproduction /Developmental Toxicity Screening Testing of
Acetanilide in Rats (test No.G00154, tested by KRICT)(b)
Species/strains:
Sex:
Route of administration:
Exposure period:

Rat / Sprague-Dawley
Female [ ]; Male [x]; Male/Female [ ]; No data [ ]Oral feed
application of acetanilide in food for 16 consecutive weeks, then basal food for 8
weeks, then returning to experimental diet for several 4-week periods, with a week
between each period during which rats were fed basal diet; the study wasterminated after 27 or 41 weeks
Frequency of treatment:
Daily
Post exposure observation period:
Dose:
0.8 % in food = about 533 mg/kg b.w
Control group:
Yes [x]; No [ ]; No data [ ]Concurrent no treatment [ ]; Concurrent vehicle [ ]; Historical [ ]NOAEL:< 0.8 % (533 mg/kg b.w)
LOAEL:
Results:
Anemia splenomegaly; dark discoloration of livers
Method:Other
GLP:
Yes [ ]; No [ ]; ? [x]Test substance:
Not detailed
Remarks:
A significant correlation showed between the spleen size and the HGB (r= -0.833, P <0.01). Acetanilide inhibits azo dye carcinogenesis in the liver of the rat.
Reference:
Blunck, J. M. and Crowther, C. E. Enhancement of azo dye carcinogenesis by
ietary sodium sulphate. Europ. J. Cancer. 11, 23-31, 1975(c)Species/strains:
Rat/Albino
Sex:
Female [ ]; Male [ ]; Male/Female [x]; No data [ ]Route of administration:oral (gavage)
Exposure period:
4 weeks
Frequency of treatment:
Once a day, 6 days/week
Post exposure observation period: One weekDose:
0, 135, 540 mg/kg /dayControl group:
Yes [x]; No [ ]; No data [ ]; Concurrent no treatment [ ]; Concurrent vehicle [ ];Historical [ ]NOAEL:
540 mg/kg/day
LOAEL:> 540 mg/kg/day
Results:
No change in blood
Method:Other
GLP:
Yes [ ];
No [x]; ? [ ]UNEP PUBLICATIONS

45

OECD SIDS
Test substance:
Remarks:

Reference:

ACETANILIDE
U.S.P quality
One week after dosing was discontinued, the amounts of methemoglobin andsulfhemoglobin were almost the same as in controls. Small amount ofsulfhemoglobin remained in most cases.
Smith, P.K. Change in blood pigments associated with the prolonged
administration of large doses of acetanilide and related compounds. J. Pharm. Exp.
Ther. 70, 171-178 (1940)(d)Species/strains:
Monkey / Mangabey
Sex:
Female [ ]; Male [ ]; Male/Female [ ]; No data [x]Route of administration:
oral
Exposure period:
I: 108 days; II: 95 days; III: 104 days
Frequency of treatment:
Once daily, 6 days/week
Post exposure observation period:Dose:
I: 50 mg/kg bw; II: 135 mg/kg bw; III: 540 mg/kg bw/day
Control group:
Yes [x]; No [ ]; No data [ ]; Concurrent no treatment [ ];Concurrent vehicle [ ]; Historical [ ]NOAEL:
50 mg/kg bw/day
LOAEL:
135 mg/kg bw/day
Results:
Moderate amount of methemoglobin and sulfhemoglobin were formed.
Method:2 animals/group were tested
GLP:
Yes [ ];
No [x]; ? [ ]Test substance:
Reference:
Smith, P.K. Change in blood pigments associated with the prolonged
administration of large doses of acetanilide and related compounds. J. Pharm. Exp.
Ther. 70, 171-178 (1940)(e)Species/strains:
Cat
Sex:
Female [ ]; Male [ ]; Male/Female [ ]; No data [x]Route of administration:
Not specified
Exposure period:
3 weeks/ another 5 weeks/34 days
Frequency of treatment:
Once a day
Post exposure observation period:Dose:
30 mg/kg /day were applied for 3 weeks, then the dose was doubled (60 mg/kg) for
another 5 weeks and then raised to 125 mg/kg/day for 34 days (death of the cat)(no further information available)
Control group:
Yes [x]; No [ ]; No data [ ]; Concurrent no treatment [ ];Concurrent vehicle [ ]; Historical [ ]NOAEL:
30 mg/kg/day
LOAEL:
Results:
30 mg/kg /day: no toxic effect;
60 mg/kg/day: slight weight loss;
125 mg/kg bw/day: decline in weight;
extensive hemorrhage in the kidneys, mottled livers, death at d 34 of theapplication
Method:GLP:
Yes [ ];
No [x]; ? [ ]Test substance:
Reference:
Dunker, M.F.W. & Thompson, M.R. Toxicity and antipyretic properties of somehalogenated acetanilids. J. Am. Pharm. Assoc. 28, 70-73 (1939)

5. 5

GENETIC TOXICITY IN VITROA.

BACTERIAL TEST(a) Preferred Result
Type:
System of testing:Concentration:
Metabolic activation:

46

Bacterial reverse mutation assay
Salmonella typhimurium TA 97, TA 98, TA 100, TA 1535
5 doses (max. dose of 10 mg/plate)With [ ]; Without [ ]; With and Without [x]; No data [ ]UNEP PUBLICATIONSOECD SIDS
Results:
Cytotoxicity conc:
Precipitation conc:
Genotoxic effects:

Method:GLP:Test substance:
Remarks:
Reference:

(b)
Type:
System of testing:Concentration:
Metabolic activation:
Results:
Cytotoxicity conc:
Precipitation conc:
Genotoxic effects:

Method:GLP:Test substance:
Remarks:
Reference:

(c)
Type:
System of testing:Concentration:
Metabolic activation:
Results:
Cytotoxicity conc:
Precipitation conc:
Genotoxic effects:

Method:GLP:Test substance:
Remarks:
Reference:

(d)
Type:
System of testing:Concentration:
Metabolic activation:
Res ults:
Cytotoxicity conc:
Precipitation conc:

ACETANILIDE
With metabolic activation : no data
Without metabolic activation : no data
+ ? With metabolic activation : [ ] [ ] [x]Without metabolic activation : [ ] [ ] [x]Other(preincubation method)Yes [ ]; No [ ]; ? [x]Source : Aldirch Chem. Purity : 97 %Zeiger, E. B. Anderson, S. Haworth, T. Lawlor, K. Mortelmans. Salmonellamutagenicity tests:IV. Results form the testing of 300 chemicals. Env. Mol.
Mutag. Vol.11/12, 1-19 (1988)

Bacterial reverse mutation assay
Salmonella typhimurium TA100, TA98
0.1 mg/plateWith [ ]; Without [ ]; With and Without [x]; No data [ ]With metabolic activation : not observed
Without metabolic activation : not observed+ ? With metabolic activation :[ ] [ ] [x]Without metabolic activation : [ ] [ ] [x]Other (Ames 1975)
Yes [ ]; No [ ]; ? [x]Source : Wako Pure Chemical Ind.
preincubation metaboloic incubation : Rat liver, S-9, PCB
Kuboyama, N. and A. Fujii. Mutagenicity of analgesics, their derivatives, andanti-inflammatory drugs with S-9 mix of several animal species; J. Nihon Univ.
Sch. Dent. 34 (3):183-195, 1992

Bacterial reverse mutation assay
Salmonella typhimurium TA 98
536.9 nmoles/plateWith [x]; Without [ ]; With and Without [ ]; No data [ ]not specified
not stated+ ? With metabolic activation :[ ] [ ] [x]Without metabolic activation : [ ] [ ] [ ]Other (Ames 1983)
Yes [ ];No [ ]; ? [x]Source : Nakarai Chemical Co. Ltd. (guaranteed grade)
Preincubation method according to Maron, D.M. & Ames, B.N., Mutat. Res. 113,
173-215 (1983)
Ogawa, S. T. Hirayama, Y. Fujioka, S. Ozasa, M. Tokuda, K Hirai, S. Fukui.
Mutagenicity modulating effect of quercetin on aromatic amines and acetamides.
Mutation Research 192, 37-46 (1987)
Bacterial reverse mutation assay
Salmonella typhimurium TA 1538
10 mg/plateWith [ ]; Without [ ]; With and Without [x]; No data [ ]No data
Not specified

UNEP PUBLICATIONS

47

OECD SIDS
Genotoxic effects:

Method:GLP:Test substance:
Remarks:
Reference:

(e)
Type:
System of testing:Concentration:
Metabolic activation:
Results:
Cytotoxicity conc:
Precipitation conc:
Genotoxic effects:

Method:GLP:Test substance:
Remarks:
Reference:(f)
Typ e:
System of testing:Concentration:
Metabolic activation:
Results:
Cytotoxicity conc:
Precipitation conc:
Genotoxic effects:

Method:GLP:Test substance:
Remarks:

Reference:B.

+ ? With metabolic activation :[ ] [ ] [x]Without metabolic activation : [ ] [ ] [x]Other(Ames 1973)
Yes [ ];No [ ]; ? [x]Source : Aldrich Chemical Co.
Method : According to Ames, B.N. et al., Proc. Nat. Acad. Sci. USA 70, 782-786,
1973
1. Goldman, P. L.A. Wheeler, J.H. Carter, J.A. Ingelfinger, F.B. Soderberg.
Properties of the Ames salmonella mutants lodged in the gastrointestinal tractof gnotobiotic rats. Am. J. Clin. Nutr. 30, 1921-1926 (1977)
2. Wheeler, L.A., J. H. Carter, F.B. Soderberg, and P. Goldman. Association of
salmonella mutants with germfree rats: Site specific model to detect
carcinogens as mutagens. Proc. Natl. Acad. Sci. USA 72(11), 4607-4611, 1975
Bacterial reverse mutation assay
Bacillus subtilis TKJ5211
50, 500 ug/plateWith [ ]; Without [ ]; With and Without [x]; No data [ ]With metabolic activation : not observed
Without metabolic activation : not observed+ ? With metabolic activation :[ ] [ ] [x]Without metabolic activation : [ ] [ ] [x]Backward mutation of histidin auxotrophic mutants
Yes [ ];No [ ]; ? [x]source : commercial
Tanooka, H. Development and Applications of Bacillus subtilis Test Systems for
Mutagens, involving DNA-Repair Deficiency and Suppressible Auxotrophic
Mutations. Mutation Research. 42, 19-32, 1977
Bacillus subtilis recombination assay
Bacillus subtilis HLL 3 g (wild), HJ-15
50, 500 µg/plateWith [ ]; Without [x]; With and Without [ ]; No data [ ]With metabolic activation : not observed
Without metabolic activation : not observed+ ? With metabolic activation :[ ] [ ] [ ]Without metabolic activation : [ ] [ ] [x]Other (Kada 1972)
Yes [ ];No [ ]; ? [x]source : commercial
T he difference in width of the inhibition zones produced with HLL 3g and HJ–15
was taken as an indication of the excision and/or recombination repair dependent
DNA damage by the chemical
Tanooka, H. Development and Applications of Bacillus Subtilis Test Systems forutagens, involving DNA-Repair Deficiency and Suppressible Auxotrophic
Mutations. Mutation Research. 42, 19-32, 1977

NON -BACTERIAL TEST
(a)
Type:
System of testing:Concentration:

48

ACETANILIDE

Mammalian Chromosomal aberration test
Species/Strains: Chinese hamster fibroblast cells
The max. effective dose 1.60 mg/mL

UNEP PUBLICATIONSOECD SIDS
Metabolic activation:
Results:
Cytotoxicity conc:
Precipitation conc:
Genotoxic effects:

Method:GLP:Test substance:
Remarks:
Reference:

(b)
Type:
System of testing:Concentration:
Metabolic activation:
Results:
Cytotoxicity conc:

ACETANILIDE
With [ ]; Without [x]; With and Without [ ]; No data [ ]With metabolic activation :not observed
Without metabolic activation : not observed+ ? With metabolic activation :[ ] [ ] [ ]Without metabolic activation : [ ] [ ] [x]Yes [ ];No [ ]; ? [x]supplied from the project team supported by Ministry of Health & Welfare, Japan.
Different doses were exposed directly to the cells and chromosome preparation
was made 24h and 48h after treat ment.
Ishidate, M. & Odashima, S. Chromosome tests with 134 compounds on Chinese
hamster fibroblast cells in vitro – A screening for chemical carcinogenes. Mutation
Research. 48, 337-354 (1977)

Mammalian Chromosomal aberration test
Chinese hamster ovary cells (CHO-K1)
0, 10, 50, 100 µg/mL
With [ ]; Without [x]; With and Without [ ]; No data [ ]With metabolic activation :not specified
Without metabolic activation : not specified

Precipitation conc:
Genotoxic effects:

Method:GLP:Test substance:
Remarks:
Reference:

(c)
Type:
System of testing:Concentration:
Metabolic activation:
Results:
Cytotoxicity conc:
Precipitation conc:
Genotoxic effects:

Method:GLP:Test substance:
Remarks:
Reference:With metabolic activation :Without metabolic activation :otherYes [ ]; No [ ]; ? [x]source : commercial+ ? [ ] [ ] [ ][ ] [ ] [x]Sasaki M., Yoshida, S. and Hiraga K. Additional effect of acetaminophen on the
mutagenicity and clastogenicity of N-methyl-N' -nitro-N-nitrosoguanidine incultured Chinese hamster CHO-Kl cells. Mutation Research. 122, 367-372, 1983
(1980)

Sister-chromatid-exchange
Chinese hamster cells (CHO-K1)
25, 50, 75, 100, 200, 400, 800, 1600 µg/mL
With [ ]; Without [ ]; With and Without [x]; No data [ ]not specified
not statedWith metabolic activation :Without metabolic activation :OtherYes [ ]; No [ ]; ? [x]Source : commercial+ ? [ ] [ ] [x][ ] [ ] [x]Yoshida, S., S. Nawai, and K. Hiraga. Cytogenetic Studies of Acetaminophen and
Its Related Compounds. Ann. Rep. Tokyo Metr. Res. Lab. Pub. Health 31(2), 102108, 1980

UNEP PUBLICATIONS

49

OECD SIDS
5. 6

ACETANILIDEGENETIC TOXICITY IN VIVO(a) Preferred Result
Type:
Species/Strains:
Sex:
Route of Administration:
Exposure period:
Doses:
Results:
Method:GLP:Test substance:
Remarks:
Reference:

(b)
Type:
Species/Strains:
Sex:
Route of Administration:
Exposure period:
Doses:
Results:
Method:GLP:Test substance:
Remarks:
Reference:
(c)
Type:
Species/Strains:
Sex:
Route of Administration:
Exposure period:
Doses:
Results:
Method:GLP:Test substance:
Remarks:

Micronucleus test
Mouse / ICR
Female [ ]; Male [x]; Male/Female [ ]; No data [ ]i.p.
single dose
0, 500, 1000, 1500 mg/kg bw
Negative
OECD TG 474
Yes [x]; No [ ]; ? [ ]Source : Aldrich Chemical Co. purity : > 99.90 %Ministry of Environment (MOE), Korea (2001) Micronucleus test of acetanilide in
Mouse (Test No.257, tested by LGCI toxicology center)

Cytogenetic assay
Mouse / CD-1
Female [ ]; Male [ ]; Male/Female [ ]; No data [x]i.p. and oral
One application
300, 600, 1200 mg/kg to i.p./ 600, 1200, 1800 mg/kg to oral
Negative (no significant increase of aberration in the cells analyzed)
Duration of treatment: 6 or 24 hours (animals were killed for chromosome
examination 6 or 24 hours after substance application)
Yes [ ]; No [ ]; ? [x]Commercial
Yoshida, S., Nawai S., Hirage K. Cytogenetic studies of acetaminophen and its
related compounds. Ann. Rep. Tokyo Metr. Res. Lab. P. H. 31-32, 102-108 (1980)
Micronucleus test
Mouse / Swiss SJL
Female [ ]; Male [ ]; Male/Female [x]; No data [ ]i.p.
single dose
0, 5, 50, 100, 200 and 400 mg/kg
Positive
Yes [ ]; No [ ]; ? [x]Source : commercial (purified by recrystallization)
micronucleated polychromatic erythrocyte (MNPCE) frequency in bone marrow cells
Dose,
mg/kg
0

Reference:50

MNPCE % ± SEM% increase overcontrol

Micronucleus
inducing potency

2.75 ± 0.41

550

2.00 ± 0.57
5.38 ± 0.48

95.6

258.5

100
200
400

8.63 ± 0.51
3.75 ± 0.28
4.00 ± 0.41

213.8
36.4
45.5

292.9
24.9
15.6

Sicardi, S. M., Martiarena J.L., Iglesias M.T. Mutagenic and analgesic activities ofaniline derivatives. J. Pharm. Sci. 80 (8),761-764 (1991)

UNEP PUBLICATIONSOECD SIDS
(d)
Type:
Species/Strains:
Sex:
Route of Administration:
Exposure period:
Doses:
Results:
Method:GLP:Test substance:
Remarks:

Reference:

(e)
Type:
Species/Strains:
Sex:
Route of Administration:
Exposure period:
Doses:
Results:
Method:GLP:Test substance:
Remarks:
Reference:

5. 7

ACETANILIDE
Cytogenetic assay
Rat / strain: LE
Female [ ]; Male [ ]; Male/Female [ ]; No data [x]i.p.
One application
0.01-10 mM/kg = 1.35-1351.6 mg/kg (no other information)
Positive (significantly increased number of chromosomal aberrations in bonemarrow cells)
Yes [ ]; No [ ]; ? [x]Duration of treatment: 6 hours (animals were killed for chromosome
examination
6 hours after substance application); Acetanilide was suspended in saline
containing pluronic F68; 175 metaphase bone marrow cells were examined foroccurrence of breaks and gaps.
Shimazu, H., Shiraishi N., Akematsu T., Ueda N., Sugiyama T. Carcinogenicity
screening tests on induction of chromosomal aberrations in rat bone marrow cellin vivo. Mutation Research. 38, 347a (1976)

Host-mediated-assay
Rat / Sprague-Dawley
Female [ ]; Male [x]; Male/Female [ ]; No data [ ]Oral
5 days10 mg/day
Negative (no increase of the number of revertants in the feces)Yes [ ]; No [ ]; ? [x]Indicator organism: Salmonella typhimurium TA 1538, lodged into thegastrointestinal tract of otherwise germ-free rats
Goldman, P. L.A. Wheeler, J.H. Carter, J.A. Ingelfinger, F.B. Soderberg.
Properties of the Ames salmonella mutants lodged in the gastrointestinal tract ofgnotobiotic rats. Am. J. Clin. Nutr. 30, 1921-1926 (1977)CARCINOGENICITY(a)
Species/Strains:
Mouse / ABC-A
Sex:
Female [ ]; Male [ ]; Male/Female [x]; No data [ ]Route of Administration: Oral feed
Exposure period:rd (0.5, 1.0 %) and 4th (0.1 %) generation study
Frequency of treatment:
Daily
Post exposure observation period:
Doses:
0.1, 0.5, 1.0 % in food = ca. 125, 625, 2000 mg/kg /bw
Control group:
Yes [ ]; No [ ]; No dat a [x]; Concurrent no treatment [ ]; Concurrent vehicle [ ];Historical [ ]Results:
No induction of mammary carcinoma
Method:GLP:
Yes [ ]; No [x]; ? [ ]Test substance:
Remarks:
4 generation study with strain of ABC-A; no analysis of tumor types besides the
mammary gland.
Reference:
Wright, H.N. Chronic Toxicity Studies of Analgesic and Antipyretic Drugs andCongeners. Tox. and Applied Pharmacology. 11, 280-292, 1967(b)Species/Strains:
Sex:
Route of Administration:

Rat / Sprague-Dawley
Female [ ]; Male [x]; Male/Female [ ]; No data [ ]Oral feed

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OECD SIDSACETANILIDE

Exposure period:
see method
Frequency of treatment:
Daily
Post exposure observation period:
Doses:
0.8 % in food = ca. 533 mg/kg/day
Control group:
Yes [x]; No [ ]; No data [ ]; Concurrent no treatment [ ]; Concurrent vehicle [ ];Historical [ ]Results:
No hyperplasic or dysplastic changes were observed
Method:Application of acetanilide in food for 16 consecutive weeks, then basal food for 8
weeks, then returning to experimental diet for several 4-week periods, with a week
between each period with basal diet feeding; the study was terminated after 27 or
41 weeks.
GLP:
Yes [ ]; No [ ]; ? [x]Test substance:
Remarks:
The aim of the study was to investigate the influence of acetanilide or sodium
sulphate on 3-methyl-4-dimethylamino- azobenzene carcinogenicity; acetanilidegroup served as one control group
Reference:
Blunck, J. M. and Crowther, C. E. Enhancement of azo dye carcinogenesis bydietary sodium sulphate. Europ. J. Cancer 11, 23-31, 1975(c)Species/Strains:
Rat / Fischer F344
Sex:
Female [ ]; Male [x]; Male/Female [ ]; No data [ ]Route of Administration: Oral feed
Exposure period:
16 weeks
Frequency of treatment:
Daily
Post exposure observation period:
10 weeks
Doses:
8000 ppm = 400 mg/kg /bw in foodControl group:
Yes [x]; No [ ]; No data [ ]; Concurrent no treatment [ ]; Concurrent vehicle [ ];Historical [ ]Results:
No induction of liver tumors
Method:GLP:
Yes [ ]; No [x]; ? [ ]Test substance:
Remarks:
The aim of the study was to investigate the influence of acetanilide and othersubstances on N-2-fluorenylacetamide carcinogenicity. The addition of acetanilidein 44 times molar excess to diet protested rats against liver tumor induction by N2-fluorenylacetamide.
Reference:
Yamamoto, R.S., Frenkel H.H, Weisburger. Effects of isomers of acetotoluidide andaminobenzoic acid on the toxicity and carcinogenicity of N-2-fluorenylacetamide.
Tox. Appl. Pharm., 17, 98-106 (1970)

5. 8

TOXICITY TO REPRODUCTION(a) Preferred Result
Type:
Fertility [ ]; One generation study [x]; Two generation study [ ]; Other [ ]Species/Strains:
Rat / Sprague-Dawley
Sex:
Female [ ]; Male [ ]; Male/Female [x]; No data [ ]Route of Administration: Oral (gavage)
Exposure period:
30 days for male, 39-50 days for female
Frequency of treatment:
once a day
Post exposure observation period: 1 day
Premating exposure period: 2 weeks for Male and female
Duration of test:
51 days
Doses:
0, 22, 67, 200, 600 mg/kg/day
Control group:
Yes [x]; No [ ]; No data [ ]; Concurrent no treatment [ ]; Concurrent vehicle [x];Historical [ ]NOAEL parental := 600 mg/kg/day
NOAEL F1 Offspring:= 200 mg/kg/day
Results:
No significant differences appeared between the treatment groups and control
group in precoital time, copulation rate, impregnation rate and pregnancy rate.
Both sexes of F1 showed significant decrease in survival rate at 600 mg/kg.
Method:OECD TG 422

52

UNEP PUBLICATIONSOECD SIDS
GLP:
Test substance:
Remarks:
Reference:

ACETANILIDEYes [x]; No [ ]; ? [ ]Source : Aldrich Chemical Co, purity 97 %Ministry of Environment (MOE), Korea (2001), Combined Repeated DoseToxicity with the Reproduction /Developmental Toxicity Screening Testing of
Acetanilide in Rats (test No.G00154, tested by KRICT)

(b)
Type:
Fertility [ ]; One generation study [ ]; Two generation study [ ]; Other [x]Species/Strains:
Mouse / strain ABC-A (inbred)
Sex:
Female [ ]; Male [ ]; Male/Female [x]; No data [ ]Route of Administration: Oral feed
Exposure period:
Not specified
Frequency of treatment:
continuously in diet
Post exposure observation period:
Premating exposure period: Not specifiedDuration of test:
Doses:
0.1, 0.5, 1.0 % in diet = ca. 125, 625, 2000 mg/kg bw/day
Control group:
Yes [x]; No [ ]; No data [ ]; Concurrent no treatment [ ]; Concurrent vehicle [ ];Historical [ ]NOEL parental :=NOEL F1 Offspring:=
NOEL F2 Offspring:
Results:
Depressant effect on reproduction and litter raising; 0.1 %: Significant reductionof survival in the 3rd and 4th generation (insufficient number of offsprings wereborn to continue the 5th generation); 0.5; 1 %: Reduction of survival (significant
only in the 2nd generation); retardation of growth; deterioration of condition;methemoglobin formation; cyanosis; it was only possible to carry the 0.5 and 1.0% concentration through 3 generations because of the reduced reproductive
capacity and the small number of pups raised (0.5 %: 53.6 % and 1.0 %: 20 % of
the litters born were raised); at 1.0 % only 15 pups raised in the fourth generation(60 % of the females had no litters), so it was not possible to continue the study
through the 5th generation.
Method:GLP:
Yes [ ]; No [x]; ? [ ]Test substance:
Remarks:
Reference:
Wright, H.N. Chronic Toxicity Studies of Analgesic and Antipyretic Drugs andCongeners. Tox. and Applied Pharmacology. 11, 280-292, 1967

5. 9

DEVELOPMENTAL TOXICITY/TERATOGENICITY(a) Preferred Result
Species/Strains:
Rat / Sprague-Dawley
Sex:
Female [ ]; Male [ ]; Male/Female [x]; No data [ ]Route of Administration: Oral (gavage)
Exposure period:
30 days for male, 39-50 days for female
Frequency of treatment:
once a day
Post exposure observation period: 1 days
Premating exposure period:2 weeks for Male and female
Duration of test:
51 days
Doses:
0, 22, 67, 200, 600 mg/kg/day
Control group:
Yes [x]; No [ ]; No data [ ]; Concurrent no treatment [ ]; Concurrent vehicle [x];Historical [ ]NOAEL For developmental: 67 mg/kg/day
Results:
In the 600 mg/kg exposure group the survivals at birth showed increase incyanosis and icterus. The body weight of pups gain on the day 4 after birth
decreased at 200 mg/kg. No significant differences appeared between thetreatment and control group in any other observation.
Method:OECD TG 422
GLP:
Yes [ ]; No [x]; ? [ ]Test substance:
Source : Aldrich Chemical Co, purity: 97 %UNEP PUBLICATIONS

53

OECD SIDS
Remarks:
Reference:(b)
Species/strain:
Sex:
Route of administration:
Duration of the test:
Exposure period:
Frequency of treatment:
Doses:
Control group:

ACETANILIDE
Ministry of Environment (MOE), Korea (2001), Combined Repeated DoseToxicity with the Reproduction /Developmental Toxicity Screening Testing of
Acetanilide in Rats (test No.G00154, tested by, KRICT)

Drosophila / Oregon R, Canton S109 and Canton S.
Female [ ]; male [ ]; Male/Female [ ]; No data [ ]24 hrs
1 mM
Yes [ ]; No [ ]; No data [ ]; Concurrent no treatment [ ]; Concurrent vehicle [ ];Historical [ ]NOEL Maternal Toxicity:
NOEL Teratogenecity
Results:
Non teratogen
GLP:
Yes [ ]; No [ ]; ?[x]Test substance:
Remarks:
The possible teratogenic effect of acetanilide was tested in vitro using Drosophila
embryonic cell cultures. Acetanilide showed no teratogenic effect in this assay
Reference:
Vardiabasis, N.B., Teplitz, R.L., Chernoff, G.F. and Seecof, R.L.; Detection ofTeratogens in the Drosophila Embryonic Cell Culture Test. Teratology 28, 109122, 1983

5. 10

OTHER RELEVANT INFORMATIONA.

Specific toxicity, Neurotoxicity, immunotoxicity etc.
(a)
Type:
Results:

Remarks:
Reference:

(b)
Type:
Results:

Remarks:
Reference:54

Neurotoxicity
Acetanilide (500, 700, 900, 1100 mg/kg) was tested in a modified acute toxicity
test in female Sprague-Dawley rats (6 rats/ dose). General indices of toxicity, i.e.
body weight gain, food and water consumption and body temperature wererecorded at regular intervals, motor activity was monitored; neurobehavioral
dysfunctions were assessed; routine hematology was done on 4th day after
application. All measured toxic signs were scored in relation to the control group.
Combined calculation of dose and item specific individual scores results in the socalled Tox-score classification. Acetanilide was classified 3 in a classification
scheme ranging from 1 (highly toxic) to 5 (low toxicity).
Tamborini, P. H. Sigg, G. Zbinden. Quantitative analysis of rat activity in thehome cage by infrared monitoring. Application to the acute toxicity of acetanilideand phenylmercuric acetate. Arch. Tox. 63, 85-96 (1989)

Toxicity in Blood
Acetanilide was administered to various experimental animal species by stomach
tube and to human subjects in tablets. The rabbit and the monkey form virtually nohemoglobin after acetanilide application. With regard to sensitivity to hemoglobin
formation from the substance, man is slightly more than half as sensitive as thecat, the dog half as sensitive as man, and the rat one-sixth as sensitive as the dog.
The curve obtained by plotting methemoglobin against dose of acetanilide is Sshaped. Methemoglobin is formed only when a certain minimal dose is exceeded
and there is an upper limit to the formation irrespective of dose. Administration ofamounts beyond that producing maximum concentration of methemoglobin only
increases the length of time the methemoglobin persists.
Lester, D., J. Formation of methemoglobin. I. Species differences with acetanilideand acetophenetidine. Pharm. Exp. Ther. 77, 154-159 (1943)

UNEP PUBLICATIONSOECD SIDS
(c)
Type:
Results:

Remarks:
Reference:

(d)
Type:
Results:

Remarks:
Reference:

(e)
Type:
Results:
Remarks:
Reference:B.

ACETANILIDE

in vitro Hepatotoxicity
Hepatocytes from adult male Wistar rats were incubated with acetanilide. The
dose that caused 50% inhibition of protein synthesis after 1 hour was 6.5 mM(878.5 mg/L).
Gwynn, J., Fry J.R, Bridges J.W. The effect of paracetamol and other foreigncompounds on protein synthesis in isolated adult rat hepatocytes. Biochemical
Society Transactions - 579th Meeting, London, Vol. 7, 117-119 (1979)

Effects on blood, circulation and respiration in dogs
Dogs were treated with solvents (2 % acetic acid; 80 %, 50 %, 35 % ethanol) andincreasing doses of acetanilide (35 and 50 ccm of 0.2 % acetanilide; 25 and 50
ccm of 0.8 % acetanilide; 12 and 25 ccm of 10 % acetanilide). Formation of MetHb could not be observed. Low doses resulted in a reversible drop of bloodpressure without pathological electrocardiographic findings. High doses caused amarked drop of blood pressure as a result of cardiac insufficiency. The conduction
system of auricles and ventricles was impaired, primarily right and left bundle
branch blocks were described, followed by lethal ventricular fibrillation in thehighest dose. Aqueous solutions (0.5 %) of acetanilide up to 90 cc did not show
any influence on the respiration (a total of 4 dogs was used). Effects of higher
doses tested in ethanol could not be discriminated from results seen after ethanol
alone: respiratory stimulation was followed by periods of apnea, respiratory
depression and death (dose dependent)
Young, A.G. & Wilson, J.A. Toxicological studies of anilin and anilincompounds. III. Toxicological and hematological studies of acetanilide poisoning.
J. Pharm. Exp. Ther. 27, 133-148 (1926)

Glutathione depeletion
Liver microsomes glutathione depletion was not observed
Mouse/CRJ:ICR, Rat/Wistar, Guinea pig/Hartley and Rabbit /New Zealand
Aikawa K., Satoh T., Kobayashi K., Kitagawa H. Glutathione depletion by aniline
analogs in vitro associated with liver microsomal cytochrome P-450; Jpn. J.
Pharmacol. 28 (5), 699, 1978.

Toxicodynamics, toxicokinetics
(a)
Type:
Results:

Remarks:
Reference:

(b)
Type:
Results:

Remarks:

Excretion
Plasma elimination rates of phenacetin, acetanilide & theophylline
have been
determined in 32 healthy subjects. The plasma half-lives and metabolic clearance
rates of the three drugs were correlated with the inducibilities of aryl hydrocarbonhydroxylase (AHH) in mitogen-stimulated lymphocytes. Plasma half-lives of
acetanilide in 25 subjects is 191±27.8 min. Metabolic clearance rate is 14.1 ± 2.8
liter/h.
10 mg/kg, single dose. Blood Sample.
Kellermann, G., M.L. Kellermann. Benzo (a) pyrene Metabolism and Plasma
Elimination Rates of Phenacetin, Acetanilide and Theophylline in Man.
Pharmacology (Basel) 17 (4), 191, 1978

Metabolism in rabbits
Acetanilide (oral or i.v. administration of 300 mg) is mainly converted to 4hydroxyacetanilide which is excret ed as conjugates with glucuronic acid andsulfuric acid.
Formation of 4-hydroxyacetanilide was found to be not a simple first orderprocess but it could be well expressed by Michaelis-Menten equation

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OECD SIDS
Reference:

(c)
Type:
Results:

Remarks:
Reference:

(d)
Type:
Results:

Remarks:
Reference:

(e)
Type:
Results:

Remarks :Remarks:(f)
Type:
Results:

Remarks:
Reference:

(g)
Type:
Results:

56

ACETANILIDE
Shibasaki, J., T. Koizumi, T. Tanaka. Drug Absorption, Metabolism, andExcretion. I. Some pharmacokinetic Aspect of Metabolism of Acetanilide and 4Hydroxyacetanilide. Chem. Pharm. Bull. 16, 1661-1673,1968

Metabolism
Beside the glucuronic acid and sulphuric acid conjugates of p-hydroxyacetanilide,
two
other
metabolites
wereexcretedinurine:
3-(5-acetamido-2hydroxyphenyl)thio-N-acetylalanine (7-10 % of applied dose) and 3-(5acetamidophenyl)thio)-N-acetylalanine (1-3 % of applied dose). Their mode offormation may involve an intermediate epoxide.
Grantham, P.H., L.C. Weisburger, H.M. Fales, E.A. Sokoloski, J.H. Weisburger.
Identification of New Water-Soluble Metabolites of Acetanilide. Xenobiotica 4,
69-76,1974

Metabolism in vitro
The metabolism of acetanilide with hepatic microsomal preparations wasinvestigated in Sprague-Dawley male rats. The major biotransformation yielded 4hydroxyacetanilide (> 94 % of total phenols) with 2-hydroxy- and 3-hydroxy acetanilide as minor products.
Selander, H.G., D.M.Jerina, J.W.Daly. Metabolism of Acetanilide with Hepatic
Microsomes and Reconstituted cytochrome Monoxygenase systems. Arch.
Biochem. Biophys. 164, 241-246,1974

Metabolism
In a rat metabolism study with labelled acetanilide chronic intake (0.8 % in food, 4
weeks), one day feeding (0.8 %) and single injection (i.p. 200 mg/kg) werecompared. There was an increase in the excretion of glucuronic acid conjugates inurine (4.6 % of single i.p. dose and 6 % of dose after 1 day feeding) and aconcominant decrease or levelling off of sulphuric acid ester conjugates (70 % of
dose at 24 h, 40 % of dose after 1 week feeding). Blood levels of radioactivity
were 11-fold higher after 1 week feeding than after single dose and the live
contained 15 times more radioactivity after 4 weeks feeding than after single dose.
After 4 weeks feeding there was a greater binding in the liver to DNA (180-fold),
RNA (15-fold) and proteins (33-fold) than after a single i.p. injection.
Radioactivity from labelled acetanilide was also bound to serum and erythrocyte
proteins.
Grantham, P.H., T. Matsushima, L. Mohan, E.K. Weisburger, J.T. Weisburger.
Changes in the Metabolism of Labelled Acetanilide and Binding of Isotope to
Serum and Liver Macromolecules during Chronic Administration. Xenobiotica 2,551-565,1972
Metabolism in vitro
In rat liver microsomes, oxidative metabolism of acetanilide is accompanied by
NADPH-dependent lipid peroxidation and the breakdown of cytochrome P-450.
The addition of EDTA to the incubations blocked lipid peroxidation, as measured
by malondialdehyde formation, and the destruction of cytochrome P-450.
Jacobson, M., W. Levin, A.Y.H. Lu, A.H. Conney, R. Kuntzman. The rate ofpentobarbital and Acetanilide metabolism by liver microsomes: A Function of
Lipid Peroxidation and degradation of cytochrome p-410 Heme. Drug Metab.
Dispos. 1, 766-774,1973
Metabolism in vitro
T he metabolism of acetanilide was investigated in vitro in microsomes, whichwere prepared from the livers of mice pretreated without or with an inducer

UNEP PUBLICATIONSOECD SIDSACETANILIDE(sodium phenobarbital, 3-methylcholanthrene, isosafrole or n-butylbenzodioxole for 3days). The use of radiolabelled acetanilide was combined with an extraction
procedure that selectively separates the parent compound from the phenolic
compounds. Beside 4-hydroxy -acetanilide as the primary metabolite also the 3hydroxy - and the 2-hydroxyacetanilide were detected.

Remarks:
Reference:

(h)
Type:
Results:

Remarks:
Reference:

(i)
Type:
Results:

Remarks:
Reference:

(j)
Type:
Results:

Remarks:
Reference:

(k)
Type:
Results:

Remarks:
Reference:

Lewandowski, M., Y.C. Chui, P. Levi, E. Hodson. Acetanilide 4-hydroxylase andacetanilide 2-hydroxylase activity in hepatic microsomes from induced mice. Tox.
Lett. 55, 223-231,1991
Metabolism in vitro
An in vitro study was conducted to characterize the enzymes involved in thehydrolysis of acetanilide in rat liver microsomes. The optimum pH ranged
between 8 and 9.5. The activities of enzymes hydrolyzing acetanilide were foundto be unaffected by Mg++, Ca++ and EDTA. However, by employing highconcentrations of metals (CuSO 4, AgNO 3) and selective inhibitors (p-CMB, SKF525A), it was possible to dissociate the enzymes. The activities of acetanilide Ndeacetylase were evaluated in the homogenates of various rat organs. The results
show a distinct organ distribution of the hydrolases. There were also species
variations in the rate of hydrolysis at acetanilide when investigated in the liverhomogenates of rat, mouse, cat, and dog.
Ali, B, E.C. James, S. Kaur, S.J. BrumLeve, S.S. Parmar. Evidence for distinct
Carboxylesterases/amidases for hydrolytic metabolism of procaine, acetanilideand 2-acetylaminofluoren.Proc. West. Pharmacol. Soc. 27, 259-263,1984

Metabolism, pharmacokinetics
In rabbits, the elimination of acetanilide from the blood was compared, after i.v.
injection of acetanilide (300 mg) alone, with the elimination after giving 200 mg
N-phenylurea and 3 hours later 200 mg acetanilide. The elimination rate ofacetanilide from the blood was affected and reduced by the simultaneousadministration of N-phenylurea. The hydroxylation process of these drugs was
mutually inhibited.
Koizumi, T., M. Ueda, M. Kakemi, J. Shibasaki, S. Matsumoto, R. Shinagawa.
Mutual Inhibition in hydroxylation of Acetanilide and N-Phenylurea in Rabbits.
Chem. Pharm. Bull. 22, 988-1002 ,1974

Metabolism, toxicokinetics
It could be demonstrated that in rabbits, receiving 50 and 250 mg/kg ofacetaminophen and acetanilide, the hydroxylation process of acetanilide issaturable.
Koizumi, T., M. Ueda, S. Asami, J. Shibasaki, T. Tanaka, K. Yamanaka. Drugs
known to be metabolized in man et al. Chem. Pharm. Bull. 24, 1439-1450 ,1976

Metabolism in vitro
The p-hydroxylation of acetanilide was measured in three different incubation
systems containing either hemoglobin, rat liver microsomes, or microsomes plus
hemoglobin. While only low p-hydroxylation activity was found in the tissue-freesystem, the microsomal activity was enhanced by addition of hemoglobin to 135% in the case of acetanilide hydroxylation.
Jonen, H.G., R. Kahl, G.F. Kahl. Enhancement of Microsomal Aniline andAcetanilide Hydrosylation by Haemoglibin. Xenobiotica 6, 307-320 ,1976

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(l)
Type:
Results:

Remarks:
Reference:

(m)
Type:
Results:

Remarks:
Reference:

(n)
Type:
Results:

Remarks:
Reference:

(o)
Type:
Results:

Remarks:
Reference:

(p)
Type:
Results:

58

ACETANILIDE
Metabolism in vitro
The metabolism of acetanilide was studied with 3-methylcholanthrene-induced rat
liver microsomes. 25 µg/mol of acetanilide were added to the incubation medium,and incubations were carried out at 37°C for 15 min. The major metabolite was
the p-hydroxylation product (2.6 µg/mol). No m-hydroxylation took place and theo-hydroxylation product was identified only in traces (< 0.2 µg/mol).
Daly, J. Metabolism of Acetanilides and Anisoles with Rat Liver Microsomes.
Biochem. Pharmacol. 19, 2979-299 3,1970.

Metabolism, toxicokinetics
oral dose of 10 and 100 mg/kg trideuteroacetanilide were given by gastric tube toSprague-Dawley rats. In urine samples collected at 4, 8, 12, 24, and 48 h post
administration it was determined whether the major metabolite was deuterated
paracetamol or a mixture of this compound with unlabelled paracetamol produced
by deacetylation followed by subsequent reacetylation. Acetyl group exchange ofthe parent compound was also studied. Paracetamol containing no deuterated
acetyl group was detected together with the labelled metabolite. The acetyl groupexchange was time-dependent and higher than in man (see above), the mean ratiosof deuterated to unlabelled paracetamol in urine were: 2 : 1 (urine samples
collected 0-4 h) and 4 : 1 (urine samples collected 24-48 h).
However, adjustment of the dose for the mean body weight indicates that theamount administered to humans was approximately 130-fold lower than the lowdose in rats. The authors stated that the different extents of acetyl group exchange
in the two species could be dose-related. A high dose of trideuteroacetanilide
could be sufficient to saturate the oxidation of the chemical totrideuteroparacetamol and therefore to increase metabolism by deacetylationreacetylation.
Baty, J.D., R.M. Lindsay, W.R. Fox, R.G. Willis. Stable Isotopes as Probes for
the Metabolism of Acetanilide in Man and the Rat. Biomed. Environ. Mass Spect.
16, 183-189,1988

Metabolism in vitro
The role of cytochrome P450 /A2 in acetanilide.
4-Hydroxylation was studied in vitro with cDNA expression and monoclonal
antibodies. The results strongly suggest that P450 / A2 is the major and perhaps
the only enzyme responsible for the metabolism of acetanilide.
Liu, G., H.V. Gelboin, M.J. Myers. Role of Cytochrome P450 IA2 in Acetanilide 4Hydroxylation as Determined with c DNA Expression and Monoclonal
Antibodies. Arch. Biochem. Biophys. 284, 400-406,1991

Metabolism
The Metabolism of 3h-acetanilide was studied in rats after single i.p. dose (200mg/kg), 1-5 days of continuous feeding of 0.8% in diet and at weekly intervals
during 4 wk of such feeding. 3 groups excreted 56, 62 & 86% of dose,
respectively, in 24 hr samples of urine. 4-Hydroxyacetanilide, the major
metabolite, was found free, as well as conjugated with glucuronic and sulphuric
acids in all groups.
Grantham. P.H. Changes in the Metabolism of Labelled Acetanilide and Bindingof Isotope to Serum and Liver Macromolecules during Chronic Administration.
Xenobiotica. 2 (6), 551-565, 1972

Distribution
Blood levels of radioactivity at one week was 11 fold higher than after single
dose (200 mg/kg i.p.). The liver contained 15 times more isotope at 4 week (0.8 %UNEP PUBLICATIONSOECD SIDSACETANILIDE
of diet) & binding to RNA, DNA & liver proteins 180, 15 & 33 fold higher thanthe values found after 1 dose.

Remarks:
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(q)
Type:
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(r)
Type:
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5. 11

Grantham. P.H. Changes in the Metabolism of Labelled Acetanilide and Bindingof Isotope to Serum and Liver Macromolecules during Chronic Administration.
Xenobiotica. 2 (6), 551-565, 1972

Metabolism
Female Wistar rats were orally admin 14C labeled acetanilide and nitrobenzene.
Tissue concentration of nitrobenzene were significantly higher than acetanilide.
Within 24 hr, 78 % of the acetanilide dose, but only 50 % of the nitrobenzene dose
appeared in the urine. Only 33% of the acetanilide dose was excreted in the feces,versus 15.5 % of nitrobenzene. More nitrobenzene than acetanilide metabolites
were bound to hemoglobin and plasma proteins. Binding occurred through thereaction of nitrobenzene with sulfhydryl groups of cysteine as a sulfinic acidamide. Results indicate that both aniline and nitrobenzene yield hemoglobin
binding metabolites in rats.
Albrecht, W. and Neumann H.G. Biomonitoring of aniline and nitrobenzene(Hemoglobin binding in rats and analysis of adducts. Arch. Toxicol. 57 (1), 1-5,
1985

Excretion
The effects of single doses (25 g and 50 g) oral ethanol on the disposition of
acetanilide (50 mg/kg metabolic active mass) were studied in 10 healthy adults
and in 10 patients with chronic nonalcoholic liver disease. In healthy adults,ethanol produced a dose-dependent increase in acetanilide half-life, and a decreasein acetanilide clearance. In patients with liver disease, ethanol produced a similar
proportional change in acetanilide half-life and clearance, but these were lessconsistent. Liver disease itself was associated with a reduction in clearance. It was
concluded that single oral doses of ethanol, comparable to those consumed duringsocial drinking, may inhibit some forms of microsomal oxidation and may haveimportant clinical implications.
McKay. J., M.D. Rawlings, I. Cobden, O.F.W. James. The Acute Effects ofEthanol on Acetanilide Disposition in Normal Subjects, and In Patients with Liver
Dis ease. Br. J. Clin. Pharmacol. 14, 501-4, 1982

EXPERIENCE WITH HUMAN EXPOSURE
(a)
Type:
Results:
Remarks:

Reference:

(b)
Type:
Results:

occupational exposure
No significant adverse effects
Experience with human exposure in a retrospective cohort study of 342 employees
engaged in the manufacture of organic dyes, no deaths due to the bladder cancer
were observed and no statistically significant increases in mortality by duration of
exposure were found based on comparison with the US white male population:
48/342 workers exposed to acetanilide have been reported with 25 having been
exposed for < 1 year, 18 for 1-4 years and 5 for 5 years.
Ott, M.G. & Langner, R.R. A mortality survey of men engaged in the manufactureof organic dyes. J. Occ. Med. 25, 763-768 (1983)

occupational exposure
A medical officer in a chemical factory which produced acetanilide in India wrote
for consultation advice regarding the reaction of workers who fill bags ofacetanilide. After duty hours most of the workers complained of chest pain,
giddiness, epigastric pain and highly colored urine. Clinically, there were no signs,
but occasionally there was a tinge of cyanosis. The hemoglobin values of theseprocess workers were between 70 and 85 %. When there was cyanosis the workers

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OECD SIDSACETANILIDE
were admitted to a hospital and received injections of methylene blue plus vit C
iv.

Remarks:
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(c)
Type:
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Remarks:
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(d)
Type:
Results:

Remarks:(e)
Type:
Results:

Remarks:
Reference:

60

Clayton, G. D. and Clayton F. E., (eds.). Patty's Industrial Hygiene andToxicology: Volume 2A, 2B, 2C: Toxicology. 3rd ed. New York: John Wiley
Sons, 1981-1982. p. 2432

metabolism
No significant change in hepatic oxidation
Playfer, J.R. J.D. Baty, J. Lamb, C. Powell, D.A. Price-Evans, Age relateddifferences in the disposition of acetanilide, Br. J. Clin. Pharm. 6, 529-533 (1978)

Human poisoning
Cases of human poisoning from the therapeutic use and abuse of acetanilide arereported. The picture of acute poisoning is characterized by cyanosis, fatigue,
vertigo, somnolence, oppression and palpitation. Nausea, gastric pain, vomiting,diarrhea, twitchings, visual disturbances, trismus, rigor and delirium are reported.
Also coma and death were observed. In many cases these toxic effects areaccompanied by urticaria and eczema. The continued use of acetanilide leads tochronic
poisoning
characterizedbygastroenteric
disturbances,cardiacdisfunctioning, drowsiness, hemolytic anemia, methemoglobinemia, reticulocytosis,
cyanosis, antipyresis, acute renal failure and collapse. Advanced degenerativechanges of the kidneys were the most prominent postmortem findings.
Hanzlik, P.J. Health hazards in acetanilide-containing nostrums and mixtures. J.
Am. Dent. Ass. 27, 1505-1513 (1940)

Human toxicity in blood
It is well know n to produce cyanosis in some humans when taken repeatedly,
which is possible due to formation of sulfhemoglobin. Large doses in acutepoisoning produce methemoglobin.
Patty, F. (ed.). Industrial Hygiene and Toxicology: Volume II: Toxicology. 2nd
ed. New York: Interscience Publishers, 1963

UNEP PUBLICATIONSOECD SIDS
6.

ACETANILIDEREFERENCES

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Ali, B, E.C .James, S.Kaur, S.J. BrumLeve, S.S. Parmar. Evidence for distinct Carboxylesterases/amidases forhydrolytic metabolism of procaine, acetanilide and 2-acetylaminofluoren. Proc. West. Pharmacol. Soc. 27, 259-263,
1984
Argus, M.F., M.P. Newell, J.T. Henderson, F.E. Ray. Antipyretic and toxicity studies with acetanilide and o-,m-, and pchloroacetanilide. J. Am. Pharm. Assoc. 48, 204-207, 1959
Baty, J.D., R.M. Lindsay, W.R. Fox, R.G. Willis. Stable Isotopes as Probes for the Metabolism of Acetanilide in Man
and the Rat, Biomed. Environ. Mass Spect. 16, 183-189,1988
Blunck, J. M. and Crowther, C. E. Enhancement of azo dye carcinogenesis by dietary sodium sulphate. Europ. J.
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Briggs, G.G. Theoretical and Experimental relationships between soil adsorption, octanol-water partition coefficientswater solubilities, bioconcentration factors and the parachor. J. Agric. Food Chem. 29, 1050-9, 1981
Clayton, G. D. and Clayton F.E. Patty's Industrial Hygiene and Toxicology: Volume 2A, 2B, 2C: 3rd ed. New York:John Wiley Sons. p. 2432, 1981-1982
Cunningham, J.l, M.F. Bullen, D.A. P. Evans. The Pharmacokinetics of Acetanilide and Diphenyl hydration Sodium.
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Daly, J. Metabolism of Acetanilides and Anisoles with Rat Liver Microsomes. Biochem. Pharmacol. 19, 29792993,1970
Dawson, G.W., Jennings A.L., Drozdowski, D. and Rider, E. The acute toxicity of 47 industrial chemicals to fresh andsalt water fishes. J. Hazard. Mater. 1(4), 303-318, 1975/1977
Dunker, M.F.W. & Thompson, M.R. Toxicity and antipyretic properties of some halogenated acetanilides. J. Am.
Pharm. Assoc. 28, 70-73, 1939
El-Dib, M.A., O.A. Aly. Persistence of some phenylamide pesticides in the aquatic environment –III. Biological
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86, 5175-5180, 1964
Goldman, P., L.A. Wheeler, J.H. Carter, J.A. Ingelfinger, F.B. Soderberg. Properties of the Ames Salmonella mutants
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Grantham, P.H., L.C. Weisburger, H.M. Fales, E.A. Sokoloski, J.H. Weisburger. Identification of New Water-Soluble
Metabolites of Acetanilide. Xenobiotica. 69-76, 1974
Grantham, P.H., T. Matsushima, L. Mohan, E.K. Weisburger, J.T. Weisburger. Changes in the Metabolism of Labelled
Acetanilide and Binding of Isotope to Serum and Liver Macromolecules during Chronic Administration. Xenobiotica.
2, 551-565,1972
Grantham. P.H. Changes in the Metabolism of Labelled Acetanilide and Binding of Isotope to Serum and Liver
Macromolecules during Chronic Administration. Xenobiotica. 2 (6), 551-565, 1972

Gwynn, J., Fry J.R, Bridges J.W. The effect of paracetamol and other foreign compounds on protein synthesis in
isolated adult rat hepatocytes, Biochemical Society Transactions - 579th Meeting, London, Vol. 7, 117-119, 1979
Hanzlik, P.J. Health hazards in acetanilide-containing nostrums and mixtures. J. Am. Dent. Ass. 27, 1505-1513, 1940

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Hart, E.R. The toxicity and analge tic potency of salicylamide and certain of its derivatives as compared with establishedanalgetic-antipyretic drugs. J. Pharm. Exp. Ther. 89, 205-209, 1947
Hasegawa, R., Nakaji, Y., Kurokawa, Y. and Tobe, M. Acute toxicity on 113 environmental chemicals. Sci. Rep. Res.
Inst. Tohoku Univ., C, 36, 10-16, 1989
Higgins, J.A. & H.A McGuigan. The influence of caffeine on the effects of acetanilide. J. Pharm. Exp. Ther. 49, 466478, 1933
Hoechst AG, EG-Sicherheitsdatenblatt Acetanilid, 26, 01, 1994
Hoechst AG, Unpublished reports. Ber. 90, 1336, 1990
Hoechst AG, Unpublished reports. Ber. 90,1295, 1991
Hoechst AG, Unveroffentlichte Unters. Ber. 90, 1295, 1990
Hoechst AG, Unveroffentlichte Unters. Ber. 90, 1336, 1990
Ishidate, M. & Odashima, S. Chromosome tes ts with 134 compounds on chinese hamster fibroblast cells in vitro – A
screening for chemical carcinogenes. Mutation Research. 48, 337-354, 1977
IUCLID (International Uniform chemical Information Database) data set(Acetanilide;103-84-4), June, 1998
Jacobson, M., W. Levin, A.Y.H. Lu, A.H. Conney, R. Kuntzman. The rate of pentobarbital and Acetanilide metabolism
by liver microsomes: A Function of Lipid Peroxidation and degradation of cytochrome p-410 Heme. Drug Metab.
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Jonen, H.G., R. Kahl, G.F. Kahl. Enhancement of Microsomal Aniline and Acetanilide Hydroxylation by Haemoglibin.
Xenobiotica 6, 307-320,1976
Kellermann, G., M.L. Kellermann. Benzo (a)pyrene Metabolism and Plasma Elimination Rates of Phenacetin,
Acetanilide and Theophy lline in Man. Pharmacology (Basel). 17 (4), 191, 1978
Koizumi, T., M. Ueda, S. Asami, J. Shibasaki, T. Tanaka, K. Yamanaka. Urine data analysis for pharmacokinetics ofacetanilide hydroxylation in man. Chem. Pharm. Bull. 24 (7), 1439, 1976
Koizumi, T., M. Ueda, M. Kakemi, J. Shibasaki, S. Matsumoto, R. Shinagawa. Mutual Inhibition in hydroxylation of
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Koizumi, T., M. Ueda, S. Asami, J. Shibasaki, T. Tanaka, K. Yamanaka. Drugs known to be metabolized in man.
Chem. Pharm. Bull. 24, 1439-1450, 1976
Kuboyama, N. and A. Fujii. Mutagenicity of analgesics, their derivatives, and anti-inflammatory drugs with S-9 mix ofseveral animal species; J. Nihon Univ. Sch. Dent., 34 (3), 183-195, 1992
Lester, D. J. Formation of methemoglobin. I. Species differences with acetanilide and acetophenetidine. Pharm. Exp.
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Lewandowski, M., Y.C. Chui, P. Levi, E. Hodson. Acetanilide 4-hydroxylase and acetanilide 2-hydroxylase activity inhepatic microsomes from induced mice. Tox. Lett. 55, 223-231, 1991
Liu, G., H.V. Gelboin, M.J. Myers. Role of Cytochrome P450 IA2 in Acetanilide 4-Hydroxylation as Determined withc DNA Expression and Monoclonal Antibodies. Arch. Biochem. Biophys. 284, 400-406, 1991
Mackay, D. and W.J. Shiu. Critical review of Henry's law constants for chemicals of environmental interest. J. Phys.
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McKay. J., M.D. Rawlings, I. Cobden, O.F.W. James. The Acute Effects of Ethanol on Acetanilide Disposition in
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Ministry of Environment (MOE), Korea (1998), Survey on Circulation Volume of Chemicals in Korea

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Ministry of Environment (MOE), Korea (2001), Combined Repeated Dose Toxicity with the Reproduction/Developmental Toxicity Screening Testing of Acetanilide in Rats(test No.G00154, tested by KRICT)
Ministry of Environment (MOE), Korea (2001), Micronucleus test of acetanilide in Mouse(Test No.257, tested by
LGCI toxicology center)
Ministry of Environment (MOE), Korea (2001), The Acute toxicity of Acetanilide to Aquatic Invertebrate (tested by
KRICT)
Ministry of Environment (MOE), Korea (2001), The toxicity of Acetanilide to Aquatic plants; algae(tested by KRICT)
Ministry of Environment (MOE), Korea (1997), Toxicity evaluation of existing chemicals(X); Acute toxicity of
Acetanilide to fish
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Industry Ecology -Toxicity & Information Center), p.3-21, 1992
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National Institute of Environmental Research (NIER), Korea (2001), Test of Acetanilide melting point/melting
range(tested by LGCI )National Institute of Environmental Research (NIER), Korea (2001), Test of Acetanilide Boiling point (tested by LGCI )National Institute of Environmental Research (NIER), Korea (2001), Test of Acetanilide Partition Coefficient (noctanol/water) (tested by KRICT)
National Institute of Environmental Research(NIER), Korea(2001), Test of Acetanilide Hydrolysis as a Function ofpH(tested by LGCI)
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1963
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64

UNEP PUBLICATIONSOECD SIDSACETANILIDEROBUST STUDY SUMMARIES
Acetanilide (CAS No. 103-84-4)

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65OECD SIDSACETANILIDE

1) MELTING POINT
TEST SUBSTANCE
Ÿ Identity : Acetanilide (CAS No. 103-84-4)⇒ Remarks : Source :Aldrich product No.39722-9, purity 99.9 %METHODŸ Method : OECD TG 102 “ Melting Point/Melting range ”
Ÿ GLP : No
Ÿ Year : 2001
⇒ Remarks :? Test condition. Differential scanning calorimetry. Temperature range : 173 ~ 1273 K. Heating rate : 5.0 °C / min. Estimated accuracy : ± 0.5~2.0 K

RESULTSŸ Melting point value in °C:
Chemical weight(mg)

Temperature range(°C)

Heating rate(°C / min)InitialMelting range(°C)
Final

1

3.5

25 ~ 300

5

113.7

116.5

2

3.6

25 ~ 300

5

113.6

116.4

mean

-

-

-

113.7

116.4

Ÿ Decomposition : No
Ÿ Sublimation : No
⇒ Remarks

CONCLUSIONSŸ Melting point : 113.7°C.

DATA QUALITY
Ÿ Reliabilities : Reliable with restriction.
⇒ Remarks :REFERENCES (Free Text)
National Institute of Environmental Research (NIER), Korea(2001), Test of Acetanilide melting point/melting
range, (tested by LGCI)OTHER
Ÿ Last changed : August 2001
Ÿ Order number for sorting⇒ Remarks

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2) BOILING POINT
TEST SUBSTANCE
Ÿ Identity : Acetanilide (CAS No. 103-84-4)⇒ Remarks : Source : Aldrich chemical company Inc. Rot. No. 20615CO, purity 99.90 %METHODŸ Method : OECD TG 103 “Boiling point –Method according to Siwoloboff ”
Ÿ GLP : No
Ÿ Year : 2001
⇒ Remarks :? Test condition. Siwoloboff. Temperature range : ~ 600 K. Heating rate : 1 ± 0.5 °C / min. Estimated accuracy : ± 2.0 K
RESULTSŸ Boiling point value in °C:
Chemical weight (mg)Heating rate (ºC/min)Boiling point (ºC)

Preliminary test

~ 70

10

~ 304

First test

66.2

25ºC ~ 290ºC : 10
290ºC ~ : 1 ± 0.5

304

Second test

97.6

25ºC ~ 290ºC : 10
290ºC ~ : 1 ± 0.5

304

Mean

-

-

304

Ÿ Pressure : 760
Ÿ Pressure unit : mmHg
Ÿ Decomposition : No
⇒ Remarks
CONCLUSIONSŸ Boiling point : 304°C at 760 mmHg.
DATA QUALITY
Ÿ Reliabilities : Reliable with restriction.
⇒ Remarks :REFERENCES (Free Text)
National Institute of Environmental Research (NIER), Korea(2001), Test of Acetanilide boiling point, (tested by
LGCI).
OTHER
Ÿ Last changed : August 2001
Ÿ Order number for sorting⇒ Remarks

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67OECD SIDSACETANILIDE

3) VAPOUR PRESSURETEST SUBSTANCE
Ÿ Identity : Acetanilide (CAS No. 103-84-4)⇒ Remarks

METHODŸ Method / guideline followed : Not statedŸ GLP : No details
Ÿ Year : 1994
⇒ Remarks

RESULTSŸ Vapour pressure value : 0.002 hPa
Ÿ Temperature °C: 20°C
⇒ Remarks

CONCLUSIONS⇒ Remarks
Vapour pressure value : 0.002 hPa at 20°C

DATA QUALITY
Ÿ Reliabilities : Reliable with restriction⇒ Remarks

REFERENCES (Free Text)
IUCLID (International Uniform chemical Information Database) data set (Acetanilide;103-84-4), June, 1998

OTHER
Ÿ Last changed : August 2001
Ÿ Order number for sorting

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4) PARTITION COEFFICIENTTEST SUBSTANCE
Ÿ Identity : Acetanilide (CAS No. 103-84-4)⇒ Remarks : Source : Sigma Aldrich Korea, Lot No. 02910EU
Purity : 97 %, White crystalline powder, Stability during use confirmed by FT-IR spectrometry.

METHODŸ Method : OECD TG 107 (Shake Flask Method)Ÿ GLP : YesŸ Year : 2001
⇒ Remarks :RESULTSŸ Log POW : 1.16 ± 0.06
Ÿ Temperature : 23°C
⇒ Remarks :− Test condition was conducted in triple under the following conditions. Test chemical was analyzed by
HPLC(HP 1100 HPLC).
⋅ Detector : HP 1100, DAD, G1315A⋅ Column : Luna 5u, C - 18 column⋅ Mobil phase : Acetonitrile / Water(90/10, v/v)
⋅ Flow rate : 0.8 ml/min⋅ Wavelength : 254 nm⋅ Injection volume : 20
− Test condition
Condition-1

Condition-2

Condition-3

Test chemical in 1-octanol
saturated with water (0.001M)

1 mL

2 mL

4 mL

Water saturated with 1-octanol

30 mL

30 mL

30 mL

− Test results
SampleLog Pow

1ml-1
1ml-2
1ml-3
2ml-1
2ml-2
2ml-3
4ml-1
4ml-2
4ml-3

1.11
1.12
1.15
1.13
1.17
1.12
1.19
1.20
1.29

Avg.
Log Kow ± S.D

Total Avg.
Log Pow ± S.D

1.13 ± 0.02

1.14 ± 0.03

1.16 ± 0.06

1.23 ± 0.06

CONCLUSIONSŸ Log Pow : 1.16.
⇒ Remarks

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Ÿ Reliabilities : Reliable without restriction⇒ Remarks

REFERENCES (Free Text)
National Institute of Environmental Research (NIER), Korea (2001), Test of Acetanilide Partition Coefficient(n-octanol/water), (tested by KRICT)OTHER
Ÿ Last changed : August 2001
Ÿ Order number for sorting⇒ Remarks

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5) WATER SOLUBILITYTES T SUBSTANCE
Ÿ Identity : Acetanilide (CAS No. 103-84-4)⇒ Remarks

METHODŸ Method / guideline followed : Not statedŸ GLP : No details
Ÿ Year : 1994
⇒ Remarks

RESULTS
Ÿ 4 g/l at 20°C
Ÿ Description of solubility : SolubleŸ pH value and concentration at temperature : 6.5 at 20°C
Ÿ pKa value at 25°C: 0.5⇒ Remarks

CONCLUSIONS
Ÿ Acetanilde is soluble in water at 20°C
⇒ Remarks

DATA QUALITY
Ÿ Reliabilities : reliable with restriction⇒ Remarks

REFERENCES (Free Text)
1. Hoechst AG : EG-Sicherheitsdatenblatt Acetanilid, 26, January, 1994
2. Online Toxicology Data Network (TOXNET) : Hazardous Substances Data Bank(HSDB), 2001

OTHER
Ÿ Last changed : August 2001
Ÿ Order number for sorting⇒ Remarks

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OECD SIDSACETANILIDEENVIRONMENTAL FATE AND PATHWAY

6) PHOTODEGRADATION (INDIRECT-IN AIR)TEST SUBSTANCE
Ÿ Identity : Acetanilide (CAS No. 103-84-4)⇒ Remarks : Source : unavailable.

METHODŸ Method/guideline followed : OtherŸ Type (test type) : Estimated by the AOPWIN Not stated (using a structure estimation method)Ÿ GLP : No details
Ÿ Year : 2001
⇒ Remarks
The estimation by the AOPWIN (v1.90) model is base on the Atkinson model recommended in the OECD
Guidance.

RESULTSŸ Concentration of substance: Not statedŸ Temperature ?: 25?
Ÿ Direct photoylsis : Not statedŸ Indirect photoylsis- Type of Sensitizer : OH
- Concentration of Sensitizer : 0.5 x 106 OH/cm 3- Rate Contant (Radical) : 12.52 x 10-12 cm3 /molecule sec- Degradation 50 % after1.282 (31 hours)
Ÿ Breakdown products : Not stated⇒ Remarks :CONCLUSIONS
A half-life of 31 hours was measured for Acetanilide due to indirect photolysis.

DATA QUALITY
Ÿ Reliabilities : reliable with restriction⇒ Remarks

REFERENCES (Free Text)
National Institute of Environmental Research (NIER), Korea(2001), Estimation of physical/chemical properties
and environmental fate of SIDS chemicals

OTHER
Ÿ Last changed : August 2001
Ÿ Order number for sorting⇒ Remarks

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7) STABILITY IN WATERTEST SUBSTANCE
Ÿ Identity : Acetanilide (CAS No. 103-84-4)⇒ Remarks : source : Aldrich product No.39722-9, purity 99.9 %METHODŸ Method/guideline followed : OECD TG 111 “ Hydrolysis as a Function of pH”
Ÿ Type : Preliminary test-hydrolysis at 50°C for 5 days at pH 4, pH 7 and pH 9.0
Ÿ GLP : No
Ÿ Year : 2001
⇒ Remarks

RESULTSŸ NominalŸ

pH 4.0pH 7.0pH 9.0Experiment I

136 mg/L

136.4 mg/L

136.4 mg/L

Experiment II

133 mg/L

136 mg/L

136 mg/L

pH 7.0pH 9.0Measured value(at 50°C)
pH 4.0
0 day
Experiment I

146.6 mg/L

Experiment II

137.6 mg/L

5 day
140.8
mg/L
143.2
mg/L

0 day
144.5
mg/L
138.7
mg/L

5 day
142.3
mg/L
137.8
mg/L

0 day

5 day
140.8
mg/L
139.9
mg/L

149 mg/L
145.8
mg/L

Ÿ Degradation 3.91 %, 1.085 % and 4.78 % at a pH 4.0, pH 7.0 and p H 9.0 and 50 °C after 5 days.
pH 4.0pH 7.0pH 9.0Experiment I

3.96 %

1.51 %

5.51 %

Experiment II

3.89 %

0.66 %

4.05 %

Average (±S.D)

3.93 % (± 0.0495)

1.09 % (±0.601)

4.78 % (±1.03)

Ÿ Half-life (t1/2) : > 1 yearŸ Breakdown products : Not stated⇒ Remarks

CONCLUSIONS
Ÿ Acetanilide is relatively stable in water⇒ Remarks

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Ÿ Reliabilities : Reliable with restriction⇒ Remarks

REFERENCES (Free Text)
National Institute of Environmental Research (NIER), Korea(2001), Test of Acetanilide Hydrolysis as a Functionof pH, (tested by LGCI)OTHER
Ÿ Last changed : August 2001
Ÿ Order number for sorting⇒ Remarks

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8) TRANSPORT BETWEEN ENVIRONMENTAL COMPARTMENT(FUGACITY)TEST SUBSTANCE
Ÿ Identity : Acetanilide (CAS No. 103-84-4)⇒ Remarks

METHODŸ Test(test type) : Calculation
Ÿ Method : Fugacity level I(EQC model)
Ÿ Year : 2001
⇒ Remarks : The parameter used are shown in the Appendix I

RESULTSŸ Media : Air-sediment -soil-water
Ÿ Estimation Distribution and Media concentration (Level I)
Compartment
Air
Water
Soil
Sediment

Mass Amount(%)
0.13
98.57
1.26
0.02

Biota/suspended sediment

0.02⇒ Remarks

CONCLUSIONS
Ÿ Most of test substance distributed into water phase.
⇒ Remarks

DATA QUALITY
Ÿ Reliabilities : reliable without restriction.
⇒ Remarks :REFERENCES (Free Text)
National Institute of Environmental Research (NIER), Korea
properties and environmental fate of SIDS chemicals(2001), Estimation of physical/chemical

OTHER
Ÿ Last changed : August 2001
Ÿ Order number for sorting⇒ Remarks

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OECD SIDSACETANILIDE

Appendix I : Parameters used in the Fugacity Calculations

Input parameterŸ Molecular weight : 135
Ÿ Melting point (°c) : 113.7
Ÿ Vapor pressure[pa] : 0.2
Ÿ Water solubility[g/m3] : 4000
Ÿ Log POW : 1.16
Ÿ Half lives(h)- (Note 1)- In air : 31(estimated)- In water : 8760 (measured)- In soil : default value (1E+11)- In sediment : default value (1E+11)
Ÿ Temperature : 20°c

NOTE 1The estimation of half-live in air and water were generated through EPIWIN model and OECD TG 111.

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9) BIODEGRADATIONTEST SUBSTANCE
Ÿ Identity : Acetanilide (CAS No. 103-84-4)⇒ Remarks for Test SubstanceSource : unavailable

METHODŸ Method : MITI test, JAPANŸ GLP : No details
Ÿ Test type : aerobic
Ÿ Year : 1992 (printed year)Ÿ Contact Time : 14 days
Ÿ Innoculum : activated sludge

Remarks field for test conditions- Innoculum (concentration and source)·Activated sludge- Concentration of test chemical, vehicle used, pre-acclimation conditions·Concentration of chemical : 100 mg/L·100 mg of the test substance or aniline (reference) and 30 mg of activated sludge were added to 300 mlof the test medium.
- Temperature of incubation : 25 ±1°C-

Dosing procedure :Sampling frequency : 17 (duplicate)Appropriate controls and blank system used ? yes- Analytical methods used to measure biodegradation :·Automatic electrolytic biochemical oxygen demand meter for BOD, total organic carbon meter for
TOC, gas chromatograph, ult ra violet absorption spectrometer were used-

Methods of calculating measured concentrations (i.e., arithmetic mean, geometric mean, etc.)
Not stated.

RESULTSŸ Degradation % after time : 68.7 % after 14 days (BOD), 80.1mg (TOD)Ÿ Results : readily biodegradable
Ÿ Kinetics :BOD(mg) after time (days)
Flask
1day
2
3
3.12
3.24
3.36
3.48
Test substance
A
0.0
2.3
14.2
18.1
20.9
27.3
33.7
+
B
0.0
0.2
8.2
13.6
17.9
25.3
28.7
SludgeFlask

BOD(mg) after time (days)
7
8
9

5day

6

Test substance
A
46.2
+
B
44.7
SludgeŸ Breakdown products (yes/no): not stated

50.6

52.5

53.2

49.0

51.0

51.7

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3.64
37.6

4
41.2

35.1

40.7

11

14

54.5

54.3

55.9

53.0

53.5

55.3

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OECD SIDSACETANILIDE

Remarks field for results

CONCLUSIONSŸ The substance is readily biodegradable.
⇒ Remarks :DATA QUALITY
Ÿ Reliabilities : reliable with restriction⇒ Remarks :REFERENCES (Free Text)
MITI, Japan, Biodegradation and Bioaccumulation Data of Existing Chemicals Based On the CSCL JAPAN,
Published by Japan Chemical Industry Ecology-Toxicology & Information Center, p.3-21, October 1992.

OTHER
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ECOTOXICITY ELEMENT

10) ACUTE TOXICITY TO FISHTEST SUBSTANCE
Ÿ Identity : Acetanilide (CAS No. 103-84-4)⇒ Remarks : Source − Lot No. TQ-09415PQ (Sigma Chemical Co. St. Louis, USA), purity > 99.9 %METHODŸ Method / guideline followed: other: Testing of industrial chemicals (Ministry of Environment), Korea
Ÿ Type : Static
Ÿ GLP : YesŸ Year : 1997 (study performed)
Ÿ Species / Strain / Supplier : Oryzias latipes (medaka)Ÿ Analytical monitoring : No
Ÿ Exposure period : 96 hours
Ÿ Statistical methods : Not relevant (limit test)⇒ Remarks :- Test fish :· Age : 8 months· Length : 2.9 ± 0.10 cm· Weight : 0.2 ± 0.0 g- Test conditions :· Details of test : Static· Dilution water source : Underground water by passing through activated carbon and the membranefilter(1u)· Dilution water chemistry : not stated· Stock and test solution and how they are prepared :Dilution water was used to prepare the stock solution.
· Concentrations dosing rate : Control, 100 mg/L
· Vehicle/solvent and concentrations : Not used
· Stability of the test chemical solutions : Not measured· Exposure vessel type : 5 L glass aquarium, light/dark=16/8 hr, Light intensity=1640-1650 Lux· Number of replicates, fish per replicate :No replicate, 7 fish/vessel· Water chemistry in test(O2, pH) in the control and one concentration where effects were observed:
pH : 7.51 ~ 8.03, DO : 2.6 ~ 8.2 mg/L-

Test temperature range : 24.5 ~ 25.3°C- Method of calculating mean measured concentrations : Not relevant (limit test)

RESULTSŸ Nominal concentrations (as mg/L) : 100 mg/L
Ÿ Measured concentrations (as mg/L) : not determinedŸ Unit : mg/ L
Ÿ Element value : 96 hr-LC50 > 100 mg/L based on nominal concentration
Ÿ Statistical results, as appropriate : Not relevant (limit test)

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OECD SIDSACETANILIDE⇒ Remarks :- Biological observations :·Observable symptoms of intoxication : All normal- Table showing cumulative mortality : no death was observed-

Lowest test substance concentration causing 100 % mortality: not obtained under the test conditions
studied- Mortality of controls : 0 %- Abnormal responses : No
- Reference substances : No-

Any observations, such as precipitation that might cause a difference between measured and nominal
values : No
⇒ Remarks:

CONCLUSIONS
Ÿ For acetanilide, the 96 hours LC50 of the fish, Oryzias latipes (medaka), was > 100 mg/ L.
⇒ Remarks :DATA QUALITY
Ÿ Reliabilities : Reliable without restrictions⇒ Remarks :REFERENCES (Free Text)
Ministry of Environment (MOE), Korea (1997), Toxicology Evaluation of Synthetic Chemicals (X)OTHER
Ÿ Last changed : August 2001
Ÿ Order number for sorting⇒ Remarks :80

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11) TOXICITY TO AQUATIC PLANTS ( ALGAE)TEST SUBSTANCE
Ÿ Identity : Acetanilide (CAS No. 103-84-4)⇒ Remarks : Source − Lot No. 13325BU (Aldrich Co.), purity > 99.95 %METHODŸ Method : OECD TG 201, “Alga, Growth Inhibition Test”(1984)
Ÿ Type : Static
Ÿ GLP : YesŸ Year : 2001 (study performed)
Ÿ Species / Strain / Supplier : Green algae (Selenastrum capricornutum),
Strain No. ATCC 22662 obtained from American Type Culture Collection (12301 Park lawn Drive, Rockville,
Maryland 20852, USA), and subcutured at the testing facility.
Ÿ Analytical monitoring : Yes, measured by HPLC at 0 and 72 hr.
Ÿ Exposure period/Endpoint : 72 hours
Ÿ Element basis : Area under the growth curveŸStatistical methods : Non-linear regression analysis was employed to determine EC50 by Comprehensive
Toxicity Data Analysis and Database Software (Version 5.0). For the determination of NOEC, Dennett’s test
was used (p < 0.05).
⇒ Remarks :- Test organisms·Laboratory culture : OECD medium·Method of cultivation : shaking at 100 rpm in the shaking incubator·Controls : OECD medium- Test conditions·Test temperature range : 22-24°C·Growth/test medium : OECD medium·Dilution water source : OECD medium·Exposure vessel type : 100 ml- medium in a Erlenmeyer flask , 3 per treatment·Water chemistry in test (pH) in at least one replicate of each concentration (at start and end of the test):
pH=7.55 - 8.51 at start, pH=7.45 - 8.00 at end of the test (72 hr)·Stock solutions preparation : stock solution was prepared with OECD medium and sterilized through 0.45µm acrodisc filter·Light levels : 8,220 - 8,312 Lux, continuous- Test design· Number of replicates ; Triplicate· Concentration :Nominal concentration : 3, 6, 13, 25, 50, 100 (mg/L)
Measured concentration : 4, 8, 18, 29, 58, 105 (mg/L)· Initial cell number: 1×10 4 (cells/ml)- Method of calculating mean measured concentrations : Geometric mean

RESULTSŸ Nominal concentrations (as mg/L) : 3, 6, 13, 25, 50, 100
Ÿ Measured concentrations (as mg/L) : 4, 8, 18, 29, 58, 105
Ÿ Unit : mg/L
Ÿ Element value : 72 hr-EC50 =13.5 mg/L, NOEC < 4mg/L
Ÿ Was control response satisfactory : Yes, Cell density in control increased by 120 times at the termination ofexperiment (72 hr).

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OECD SIDSACETANILIDEŸ Statistical results, as appropriate : Not described⇒ Remarks:- Biological observations : cell density measured during the experiment
Nominalconcentration(mg/L)
0
3
6
13
25
50
100

MeasuredConcentration(mg/L)
0
4
8
18
29
58
105

Cell concentration for each exposure(×10 4 cells/ml )
0 hr

24 hr

48 hr

72 hr

1.0 ± 0.2
1.0 ± 0.3
1.1 ± 0.3
1.1 ± 0.2
0.92 ± 0.1
0.96 ± 0.1
0.88 ± 0.1

2.4 ± 0.5
1.7 ± 0.7
1.5 ± 0.5
1.4 ± 0.2
1.5 ± 0.2
1.4 ± 0.1
1.1 ± 0.5

21.0 ± 3.2
14.0 ± 2.6
14.0 ± 1.7
11.0 ± 3.1
8.3 ± 3.7
3.9 ± 0.7
2.9 ± 0.5

120.0 ± 17.3
105.0 ± 8.7
72.0 ± 11.5
53.0 ± 13.3
41.0 ± 11.5
17.0 ± 1.7
5.9 ± 0.8

CONCLUSIONS
Ÿ For acetanilide, the 72 hours EC50 of Algae, Selenastrum capricornutum, is 13.5 mg/L.
⇒ Remarks :DATA QUALITY
Ÿ Reliabilities : Reliable without restrictions
Ÿ Remarks field : Experimental design and analytical procedure were well documented.
⇒ Remarks :REFERENCES (Free Text)
Ministry of Environment (MOE), Korea (2001), The Toxicity of Acetanilide to Aquatic Plants(Algae) (tested
by KRICT)OTHER
Ÿ Last changed : August 2001
Ÿ Order number for sorting⇒ Remarks :82

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12) ACUTE TOXICITY TO AQUATIC INVERTEBRATE (Daphnia)
TEST SUBSTANCE
Ÿ Identity : Acetanilide (CAS No. 103-84-4)⇒ Remarks : Source − Lot No. 13325BU (Aldrich Chemical Co.), purity > 99.95 %METHODŸ Method / guideline followed: Acute toxicity test to Daphnia, Testing of industrial chemicals, Ministry ofEnvironment, Korea
Ÿ Test type : 24 and 48 hrs immobilization test
Ÿ GLP : YesŸ Year : 2001 (study performed)
Ÿ Species / Strain: Daphnia (Daphnia magna)
Ÿ Details of test : Static
Ÿ Analytical monitoring : Yes, Measured by HPLC (3 replicates) at 0 and 48 hr
Ÿ Statistical methods : Not relevant (limit test)⇒ Remarks :- Test organisms :· source, supplier, any pre-treatment , breeding methods : From GSF Institute of Ecological Chemistry,
Germany· Age at study initiation < 24-hr-old- Test conditions· Stock solutions preparation and stability: stock solution was prepared with dilution water(M4 medium)· Test temperature range : 19.9-21.9°c· Exposure vessel type : 100 ml test solution in a 150 ml crystallizing dish; 3 per treatment· Dilution water source : M4 medium (OECD TG 1998)· Dilution water chemistry : hardness=224 mg/L ;alkalinity=39 mg/L; pH= 8.0· Water chemistry in test : pH=7.92-8.03 ; DO= 8.4-9.2 mg/L
· Lightning: light intensity=563-634 Lux; light periocity light/dark=16/8 hr- Element (unit) basis : immobilization-

Test design:·30 Daphnia (3 replicates ; 10 organisms in each replicate)-

Method of calculating mean measured concentration : not stated-

Exposure period : 24 and 48 hrs- Analytical monitoring : Yes, Measured by HPLC (3 replicates) at 0 and 48 hr

RESULTSŸ Nominal concentrations (as mg/L) : 0, 100 mg/L
Ÿ Measured concentrations (as mg/L) :Ÿ Unit (results expressed in what unit) : mg/L
Ÿ EC50 (24 hr) : >100 mg/L, EC50 (48 hr) : >100 mg/L
Ÿ Statistical results, as appropriate : Not relevant (limit test)

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OECD SIDSACETANILIDE⇒ Remarks :- Measured concentration in the test solution
Time(hr)048-

Target Concentration (mg/L)
100
100

Mean Concentration ±S.D
104.7 ±1.1103.5 ±3.0

Biological observations·Number immobilized as compared to the number exposed: no immobilisation was observed·Concentration response with 95 % confidence limits :·Cumulative immobilization : no immobilisation was observed·Was control response satisfactory : yes, normal

CONCLUSIONS
Ÿ For acetanilide, the 48 hours EC50 of the Daphnia magna was > 100 mg/L.
⇒ Remarks :DATA QUALITY
Ÿ Reliabilities : Reliable without restrictions.
⇒ Remarks : Experimental designs and analytical procedure were well documented.

REFERENCES (Free Text)
Ministry of Environment (MOE), Korea (2001), The Acute Toxicity of Acetanilide to Aquatic Invertebrate(Daphnia), (tested by KRICT)OTHER
Ÿ Last changed : August, 2001
Ÿ Order number for sorting⇒ Remarks :84

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13) ACUTE TOXICITYTEST SUBSTANCE
Ÿ Identity : Acetanilide (CAS No. 103-84-4)⇒ Remarks : Source – commercial

METHODŸ Method / guideline followed : OECD TG 401(1981)
Ÿ Type : Acute oral toxicity test
Ÿ GLP : No details
Ÿ Year : 1988
Ÿ Species : Rat
Ÿ Strain : Sprague-Dawley
Ÿ Route of administration : Oral
Ÿ Duration of test : Not specified
Ÿ Sex : Male/Female
Ÿ No. of animals per sex per dose : 30 animals used
Ÿ Vehicle : Not specified

REMARKS FIELD FOR TEST CONDITIONS- Age : Unknown- Doses : not specified- Doses per time period : Single- Volume administered or concentration : 1-2 ml/100 g(b.w)- Post dose observation period : 14 day

RESULTSŸ Value with confidence limits if calculated :LD50 : 1959(1428~2429) mg/kg b.w for male/female, 2033(1368~2858)mg/kg b.w for male,1893(1218~2459) mg/kg b.w for female(95 % confidence limit)
Ÿ Number of deaths at each dose level : Not stated

REMARKS FIELD FOR RESULTS- Time of death : Not stated- Description, severity, time of onset and duration of clinical signs at each dose level·Signs of toxicity reported in LD50 : Ptosis, posture, respiratory effect, lethargy, abnormal gait, prostratecoma, lacrimation.
·Time to onset of signs : LD50 1 day·Duration of signs : 4 days
- Necropsy findings, included doses affected, severity and number of animals affected·Autopsy finding : None
·Number of rats found dead : 15

- Potential target organs : Not reported- If both sexes tested, results should be compared :UNEP PUBLICATIONS

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OECD SIDSACETANILIDE
Sex
M
F

LD50 (mg/kg b.w.)
2,033
1,893

M/F
1,959
(* M = male; F =female)

95 %confidence limit
1,368 ~ 2,858
1,218 ~ 2,459

Slope
7.0

1,428 ~ 2,429

CONCLUSIONS
Acute oral toxicity (LD50) was 2033 mg/kg bw in male and 1893 mg/kg bw in female. Acetanilide washarmful as EC classification.

DATA QUALITY
Ÿ Reliabilities : Reliable with restrictions.
⇒ Remarks field for Data quality
Well conducted study, carried out by a laboratory from 11 OECD countries volunteered to participate in the
study. The LD50 test was conducted ‘blind’ (no information on the identity of the distributed chemical) and inaccordance with the 1981 OECD test guideline.

REFERENCES (Free Text)
Van den Heuvel, M.J., D.G Clark, R.J. Fielder, P.P. Koundakjian, G.J.A. Oliver, D. Pelling, N.J. Tomlinson,
A.P. Walker. The International validation of a fixed-dose procedure as an alternative to the classical LD50 test.
Food Chem. Tox. 28(7), 469-482 (1990)

OTHER
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14) GENETIC TOXICITY IN VIVO (CHROMOSOME ABERRATIONS)TEST SUBSTANCE
Ÿ Identity : Acetanilide (CAS No. 103-84-4)⇒ Remarks : Source – Aldrich chemical Co. Purity – 99.90 % up

METHODŸ Method / guideline followed : OECD TG 474
Ÿ Type : mammalian erythrocyte micronucleus test in vivo
Ÿ GLP : YesŸ Year : 2001
Ÿ Species/Strain : Mouse/ICR
Ÿ Sex : Male and femaleŸ Route of administration : i.p.
Ÿ Doses/concentration levels : 0, 500, 1000, 1500 mg/kg (bw)Ÿ Exposure period : 2 days
Ÿ Statistical methods : Chi-square test

REMARKS FIELD FOR TEST CONDITIONS- Age at study initiation : 8 weeks- Weight of study initiation : 30 - 40 g
- No. of animals per dose : 6 males per dose group- Vehicle : Pluronic F68 solution (5 %)- Duration of test : 2 days.
- Frequency of treatment : 2 times consecutive dose (24 hours interval)- Sampling times and number of samples : 24 hours after last administration and 6 samples/dose- Control groups and dose groups for the test substance :· Negative control group: concurrent vehicle (5 % Pluronic F68 sol.)· Positive control group: administrated 2 mg/kg dose of Mitomycin C- Clinical observations performed : mortality, body weight, general clinical observation- Organs examined at necropsy : Not examined- Criteria for evaluating results :statistical analysis between control and treated animals were carried out and p values < 0.05 wereconsidered to be significant: more than 0.1 of PCE/(PCE+NCE) rate, dose-related increase in the numberof micronucleated cell and reproducible increase in the number of micronucleated cells

RESULTSŸ Genotoxic effects : NegativeŸ NOAEL(NOEL) (C)/LOAEL(LOEL) (C) : None
Ÿ Effect on mitotic index or PCE/NCE ratio by dose level :UNEP PUBLICATIONS

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Dose (mg/kg)
0
500
1000
1500
Positive

Group mean
PCE/(PCE+NCE)
0.63
0.64
0.70
0.67
0.61

Group mean frequency
of MNPCE (per 1000)
1.42
1.67
1.58
1.08
58.08

Ÿ Statistical results, as appropriate : Only positive control group showed statistical significance (p < 0.05)

REMARKS FIELD FOR RESULTS- Mortality at each dose level by sex : No animal died during the test.
- Description, severity, time of onset and duration of clinical signs at each dose level and sex :All animals showed significant clinical observation including recumbent, paralysis, convulsion, ataxia,
dyspnea at all dose level.
- Body weight changes by dose and sex : Only at 1000 mg/kg, significant decrease in body weight showed.
- Food/water consumption changes by dose and sex : Not examined

CONCLUSIONSThis chemical showed negative result in micronucleus test in vivo.

DATA QUALITY
Ÿ Reliabilities : Reliable without restriction⇒ Remarks field for Data Reliability
Well conducted study, carried out by Institute of LG biotech in Korea.
REFERENCES (Free Text)
Ministry of Environment (MOE), Korea(2001), Micronucleus test of acetanilide in Mouse(Test No.257, tested
by LGCI toxicology center)

OTHER
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15) GENETIC TOXICITY IN VITRO (GENE MUTATION)TEST SUBSTANCE
Ÿ Identity : Acetanilide (CAS No. 103-84-4)⇒ Remarks : Source : Aldrich Chemical purity : 97 %METHODŸ Method / guideline Followed : Other(Haworth et al, 1983)
Ÿ Type : Reverse mutation assay (preincubation assay)
Ÿ System of testing : Bacterial
Ÿ GLP : No details
Ÿ Year : 1988
Ÿ Species/strain: Bacterial, Salmonella typhimurium TA 100, TA 1535, TA 97, TA 98
Ÿ Metabolic activation- Species and cell type : Syrian hamster and S-D rat- Quantity : 10 % S-9, 30 % S-9/S-9 mixŸ- Induced or not induced : Aroclor-1254-induced
Concentrations te sted : a half log dose intervals up to elicited toxicity dose, five doses and max. dose of 10
mg/plate applied.

Ÿ Statistical methods : no details

REMARKS FIELF FOR TES T CONDITIONS—Test Design
Ÿ Number of replicates : 2
Ÿ Plate per test : 3 plates /doseŸ Positive and negative control groups and treatment :·Negative : Concurrent solvent·Positive (-S9 mix.) : Sodium azid (TA1535,100), 9-aminoacridine (TA97,1537), 4-nitro-o·phenylenediamine (TA98)
Positive (+ S9 mix.) : 2-aminoanthracene (all strains)Ÿ Solvent : not specified
Ÿ Description of follow up repeat study :First test : without S9 and with 10 % S9; TA98,100 without and with 30 % S9Second test : without S9 and with 30 % S9; the other strain with 30 % and 10 % S9
Ÿ Criteria for evaluating results : Dose-dependent increase/reproducibility (2-fold of control was notnecessarily requested)

RESULTSŸ Cytotoxic concentration : Judged by a preliminary test, but no dataŸ Genotoxic effects :- With metabolic activation : Negative- Without metabolic activation : Negative

REMARKS FIELD FOR RESULTS- Frequency of reversions : No difference from control groups- Precipitation concentration if applicable : Not mentioned.
- Mitotic index : Not applicable

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OECD SIDSACETANILIDECONCLUSIONS
Acetanilide did not induce mutation in the S. typhimurium with and without metabolic activation.

DATA QUALITY
Ÿ Reliabilities : Reliable with restriction.

REFERENCES (Free Text)
Zeiger, E., Anderson, B., Haworth, S., Lawlor, T., Mortelmans, K. salmonella Mutagenicity Tests : IV. Resultsfrom the Testing of 300 Chemicals. Env. Mol. Mutag. 11/12, 1-158 (1988)

OTHER
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16) REPEATED DOSE TOXICITYTEST SUBSTANCE
Ÿ Identity : Acetanilide (CAS No. 103-84-4)⇒ Remarks : Source – Aldrich Chemical Co.

METHODŸ Method / guideline followed : OECD TG 422
Ÿ Type : Combined Repeat Dose and Reproduction/Developmental Toxicity Screening TestŸ GLP : YesŸ Year : 2001
Ÿ Species : Rat
Ÿ S train : Sprague-Dawley
Ÿ Route of administration : Oral (gavage)Ÿ Duration of test : male: for 31 days, female: for 51 days
Ÿ Doses/concentration levels : 0, 22, 67, 200, 600 mg/kg/day
Ÿ Sex : Male/Female
Ÿ Exposure period : male : 30 days, female : from 2 weeks before mating to the day 3 of lactation
Ÿ Frequency of treatment : once a dayŸ Control group and treatment : Concurrent vehicle(1 % CMC)Ÿ Post exposure observation period : 1 day
Ÿ Statistical methods : Dunnett’s or Scheffe’s test and Chi square test

REMARKS FIELD FOR TEST CONDITIONS— Test Subjects·Age : 8 week old for male and female·No. of animals per sex per dose : 12 animals/sex/dose— Study Design·Vehicle : 1 % Carboxylmethyl cellulose (CMC) solution·Satellite groups and reasons they were added : None
·Clinical observations performed and frequency :General condition and body wt. were observed once a day and once a week respectively. For pregnant
females, body wt. was determined on the day 0, 7, 14, and 20 of gestation and 0 and 4 of lactation.
Food consumption was determined on the next day when food was supplied as residual food weight.
Haematology and biochemistry for males only at time of necropsy after 30 days of chemical exposure.
·Organs examined at necropsy :Organ weight : liver, kidney, adrenal gland, testis, epididymis, thymus, spleen, brain, heart, ovary,uterus, thyroid gland, spermary, prostrate gland
Microscopic : brain, spinal cord, stomach, pancreas, jejunum, ileum, cecum, colon, rectum, liver,kidney, adrenal gland, spleen, heart, thymus, thyroid, bronchus, lung, pituitary gland, ovary, uterus,
vagina, testis, epididymis, spermary, prostrate gland, mammary gland, bladder, nodi lymphatici
mesenterici, nodi lymphatici, nervus ischiadicus, femoral marrow and all gross lesion.

RESULTSŸ NOAEL : less than 22 mg/kg/dayŸ LOAEL : 22 mg/kg/day

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Toxic response/effects by dose level : There was significant decrease in hemogloblin, hematocrit, and mean
corpuscular hemoglobin concentration and also significant increase in red pulp hyperplasia of spleen, bonemarrow hyperplasia of femur at all dose group.

REMARKS FIELD FOR RESULTS— Body weight : The mean body weight gains at day 0 and 4 of lactation of 600 mg/kg females weresignificantly lower than those of controls(p < 0.05).
— Food/water consumption : The mean food consumption of 67, 200 and 600 mg/kg was significantly
reduced at day 1 males and females— Description, severity, time of onset and duration of clinical signs·Male : The incidence rate of decreased locomotor activity(600, 200 mg/kg), reddish tear(600 mg/kg),
salivation(600, 200 mg/kg) and cyanosis(600, 67 mg/kg) were significantly higher than those of control
group.
· Female : cyanosis and decreased locomotor activity were found during premating period and cyanosis
were found during pregnancy and lactation period at 600 mg/kg exposure group.
— Hematological and biochemical findings incidence and severity· Hematological findings: In males there was significant decrease in HGB, HCT and MCHC value atall dose group
TEST(s):
WBC
RBC
HGB
HCT
MCV
MCH
UNITS:
thousand millions
g/dl
%
fl
pg
Group: V.CONTROL : 0 (mg/kg)
MEAN
9.47
8.06
15.4
46.5
57.7
19.1
Group: T1 : 22 (mg/kg)
MEAN
9.79
7.64
14.4**
44.4*
58.2
18.9
Group: T2 : 67 (mg/kg)
MEAN
9.28
7.03**
14.3**
44.4*
63.2** 20.4
Group: T3 : 200 (mg/kg)
MEAN
18.63
6.29**
14.4** 44.2**
70.8** 23.0**
Group: T4 : 600 (mg/kg)
MEAN
54.45** 5.23** 13.7** 43.0** 82.5** 26.4*** : Significant difference from v.control group (p<0.05)** : Significant difference from v.control group (p<0.01)

MCHC
PLT
g/dl thousandPT
second

RET.#
/1000

MET-HB
g/dl

33.0

933

15.3

2.5

0.262

32.4*

1050

15.6

5.9

0.286

32.2**

1090*

15.4

6.4

0.536

32.5

957

15.1

8.8

0.198

32.0**

897

15.8

15.0**

0.326· Biochemical findings : At 600 mg/kg, those values of AST, ALT, BUN, T-BIL, ALB, Calcium and A/Gratio were increased significantly. There was significant increase in BUN, T-BIL and decrease in Na at
200 mg/kg— Mortality and time to death : 0/11 (control); 0/12 (22 mg/kg); 0/12 (67 mg/kg); 0/10 (200 mg/kg); 4/11(600mg/kg). Four females at 600 mg/kg died at the day 21, 22 and 23 of pregnancy and the day 4 of lactation.
— Ophthalmologic findings : Not examined— Organ weight changes·
male : increase in spleen, liver, and kidney weight as follow; spleen - 67, 200, 600 mg/kg (absoluteand relative); liver-200 mg/kg(relative), 600 mg/kg(absolute and relative); kidney -600 mg/kg(relative)·
female : decrease in thymus weight at 200 mg/kg(absolute) and 600mg/kg(absolute and relative);increase in brain, kidney, ovary, spleen, heart weight as follows; brain-200, 600 mg/kg(relative);kidney -200mg./kg(relative),
600
mg/kg(absoluteandrelative);spleen-600mg/kg(absoluteandrelative); ovary- 600 mg/kg(absolute and relative); heart-600 mg/kg(relative)— Histopathology incidence and severity· male :- Liver : increase of extramedullary hematopoiesis at 200, 600 mg/kg (p < 0.01)- Spleen : increase of hyperplasia/red pulp at 22, 67, 200 and 600 mg/kg (p < 0.01)- Femur : increase of hyperplasia/bone marrow at 22, 67, 200 and 600 mg/kg (p < 0.01)· female :- Liver : increase of extramedullary hematopoiesis at 200, 600 mg/kg (p < 0.01)

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UNEP PUBLICATIONSOECD SIDSACETANILIDE- Spleen : increase of hyperplasia/red pulp at 22, 67, 200 and 600 mg/kg (p < 0.01)- Femur : increase of hyperplasia/bone marrow at 22, 67, 200 and 600 mg/kg (p < 0.01)- Thymus : atrophy at 200, 600 mg/kg(p < 0.01)

CONCLUSIONSAll treatment group showed the LOAEL associated with red pulp hyperplasia of spleen, bone marrow
hyperplasia of femur and sign ificant decrease in HGB, HCT and MCH. This result indicated the LOAEL is 22
mg/kg to both male and female.

DATA QUALITY
Ÿ Reliabilities : Reliable without restrictions.
⇒ Remarks field for Data quality
Well conducted study, carried out by Korea Research Institute of Chemical Technology.

REFERENCES (Free Text)
Ministry of Environment (MOE), Korea(2001), Combined Repeated Dose Toxicity with the Reproduction/Developmental Toxicity Screening Testing of Acetanilide in Rats(test No.G00154, tested by KRICT)OTHER
Ÿ Last changed : August 2001
Ÿ Order number for sorting

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OECD SIDSACETANILIDE

17) REPRODUCTION/DEVELOPMENTAL TOXICITYTEST SUBSTANCE
Ÿ Identity : Acetanilide (CAS No. 103-84-4)⇒ Remarks : Source – Aldrich Chemical Co.

METHODŸ Method / guideline followed : OECD TG 422
Ÿ Type : Combined Repeat Dose and Reproduction/Developmental Toxicity Screening TestŸ GLP : YesŸ Year : 2001
Ÿ Species : Rat
Ÿ Strain : Sprague-DawleyŸRoute of administration : Oral (by gavage)Ÿ Duration of test : male: for 31 days, female: for 51 days
Ÿ Doses/concentration levels : 0, 22, 67, 200, 600 mg/kg/day
Ÿ Sex : Male/Female
Ÿ Exposure period : male : 30 days, female : from 2 weeks before mating to the day 3 of lactation
Ÿ Frequency of treatment : once a dayŸ Control group and treatment : Concurrent vehicle (1 % CMC)
Ÿ Premating exposure period for males and females : 2 weeks for both sexes
Ÿ Statistical methods : Dunnett’s or Scheffe’s test and Chi square test

REMARKS FIELD FOR TEST CONDITIONS- Test Subjects· Age : 8 week old for male and female· Weight at study initiation : 255.9~326.0 g for males, 185.5~231.2 g for females· No. of animals per sex per dose : 12 animals/sex/dose- Study Design· Vehicle : Carboxylmethyl cellulose(CMC) solution 1%· Dosing schedule :males - premating period(2 weeks) and mating period ; 30 days
females -premating period(2 weeks), mating, pregnant and lactation period ; 39~50 days
· Mating procedures : M/F ratios per cage ; 1/1, proof of pregnancy; sperm detection in vagina· Clinical observations performed and frequency :General condition was observed once a day. Body weight and food consumption of pregnant animals
were determined on the day 0, 7, 14, 20 of pregnancy and the day 0, 4 of lactation. Haematology andbiochemistry for males only at the time of necropsy after 30 days of chemical exposure.
· Organ examined at necropsy :Organ weight : liver, kidney, adrenal gland, testis, epididymis, thymus, spleen, brain, heart, ovary,uterus, thyroid gland, spermary, prostrate gland.
Microscopic : brain, spinal cord, stomach, pancreas, jejunum, ileum, cecum, colon, rectum, liver,kidney, adrenal gland, spleen, heart, thymus, thyroid, bronchus, lung, pituitary gland, ovary, uterus,
vagina, testis, epididymis , spermary, prostrate gland, mammary gland, bladder, nodi lymphatici
mesenterici, nodi lymphatici, nervus ischiadicus, femoral marrow and all gross lesion.
· Parameters assessed during study
Body wt.(once a week), food consumption(once a week), copulation index (No. of animals withsuccessful copulation/No. of mated animals ×100), fertility index (No. of impregnating animals/ No.
of animals with successful copulation ×100), pregnancy index (No. of pregnant animals/ No. of pairs
with successful copulation ×100), gestation index (No. of females with live pups/No. of living

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pregnant females x 100), viability index (No. of live offspring at day 4 / No. of live offspring at
birth×100), body weight of live pups(on day 0 and 4), No. of corpora lutea, No. of female mated,
abortion, premature birth, gestation period, sex ratio(Total No.of male pups/Total No. of female
pups)

RESULTSŸ NOAEL and LOAEL for reproduction toxicity:
NOAEL : 200 mg/kg/day
LOAEL : 600 mg/kg/dayŸ NOAEL for developmental toxicity:
NOAEL : 67 mg/kg/day
LOAEL : 200 mg/kg/day
Ÿ Reproduction/developmental data
No significant differences appeared between the treatment group and control groups in precoital time,
copulation rate, impregnation rate and pregnancy rate. At 600 mg/kg, both sexes of F1 showed significant
decrease in viability index on the day 4 after birth and in body weight gain on the day 0, 4 after birth. At 200
mg/kg dose, there are significant decrease in body weight of the both sexes on the day 4 after birth. No. of
neonates with clinical signs (icterus, cyanosis) were significant increase in 600 mg/kg dose group. No
significant differences appeared between the treatment and control group in any other observation.
-----------------------------------------------------------------------------------------DOSE : (mg/kg)
0
22
67
200
600
-----------------------------------------------------------------------------------------No. of mated males
12
12
12
12
12
Copulation index(%)
12/12(100) 12/12(100)12/12(100)11/12/(92)
11/12(92)
Fertility index (%)
11/12(92)
12/12(100)12/12(100)10/11/(91)11/11(100)No. of mated females
12
12
12
12
12
Copulation index (%)
12/12(100) 12/12(100)12/12(100)11/12/(92)
11/12(92)Pregnancy index (%)
11/12(92)
12/12(100)12/12(100)10/11/(91)11/11(100)No. of dams
11
12
12
10
8
No. of corpora lutea
196
168
204
156
142
Mean±S.D
17.8±1.25
14.0±4.97
17.0±2.34
15.6±2.59
17.8±1.98
No. of implantations
171
164
189
147
136
Mean±S.D
15.5±3.05
13.7±5.05
15.8±1.91
14.7±2.58
17.0±1.07
No. of neonateswith clinical signs (%)
000010(9.3)**
No. of perinatal deaths
2
0
3
3
11*
% to implantation:
Mean±S.D
1.1±2.480
1.7±3.11
1.9±4.22
8.1±9.86*
No. of live young at birth
Mean±S.D
14.5±2.84
13.3±5.26
14.9±1.88
13.7±2.75
13.5±2.73% to implantation:
Mean±S.D
93.9±6.50
95.0±9.90
94.8±5.61
93.0±6.82
79.6±16.2
Pregnancy period(Mean±S.D)
21.6±0.30
21.8±0.44
21.7±0.26
21.8±0.35
19.9±7.26
Viability index(Mean±S.D)
98.3±2.89
90.0±28.5
97.9±4.11
98.6±2.91
65.1±41.12*
Body weights of pups (g)
Male
0 DAY
7.2±0.78
7.2±0.43
7.0±0.55
6.4±0.77
5.7±0.8*
4 DAY
11.7±1.45
11.7±0.94
11.1±1.18
9.9±1.34*
9.1±0.54*
Female 0 DAY
6.8±0.81
6.9±0.71
6.5±0.37
6.0±0.73
5.2±0.66*
4 DAY
11.1±1.68
10.5±1.08
10.5±1.14
9.3±1.30*
8.7±0.86** Statistically significant difference from control group(p<0.05)

REMARKS FIELD FOR RESULTS- Mortality and day of death : At 600 mg/kg, four females died on day 21, 22 and 23 of pregnancy and day 4of lactation.
- Body weight : Body weight significantly decreased at day 0 and 4 of lactation in females in 600 mg/kg dosegroup. Low body weight of pups showed in 200 and 600 mg/kg dose.
-

Food/water consumption : Significantly low food consumption was indicated at day of treatment in males
and females

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OECD SIDSDOSE : (mg/kg)
No. of females paired
No. of females matedDays (Mean±S.D.)-ACETANILIDE012122.8 ±3.04

221212
2.6 ±1.1667
1212
2.6 ±2.47

200
12
11
2.9 ±1.22

600
12
11
2.1 ±0.94

Precoital time of parent animals(No. of day taken to mate)- Grossly visible abnormalities, external, soft tissue and skeletal abnormalities
No statistically significant effects were observed.

CONCLUSIONS
Significant toxic effect were found in pups at 200 mg/kg. The reproduction/developmental oral toxicity test in
rats indicates that the NOAEL is 67 mg/kg bw/day.

DATA QUALITY
Ÿ Reliabilities : Reliable without restrictions.
⇒ Remarks field for Data quality
Well conducted study, carried out by Korea Research Institute of Chemical Technology.

REFERENCES (Free Text)
Combined Repeated Dose Toxicity with the Reproduction /Developmental Toxicity Screening Testing of
Acetanilide in Rats(test No.G00154, May 2001, KRICT, sponsored by Ministry of Environment, Korea)

OTHER
Ÿ Last changed : August 2001
Ÿ Order number for sorting

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