SAFETY DATA SHEET

Sikaflex®-251
Version
3.0

Revision Date:
2023/03/26

SDS Number:
100000012302

Date of last issue: 2021/10/28
Date of first issue: 2019/09/12

1. PRODUCT AND COMPANY IDENTIFICATION
Chemical product name:Sikaflex®-251

Supplier's company name, address and phone number
Company name of supplier: Sika Japan Ltd.
Akasaka-K-Tower 7F
1-2-7 Moto-Akasaka
Minato-ku Tokyo
107-0051 Japan
Telephone:+81 3 6434 7291

E-mail address:

EHS@jp.sika.com

Telefax:-Emergency telephone number :+81 463 24 4976

2. HAZARDS IDENTIFICATIONGHS classification of chemical product
Skin sensitisation: Category 1
Carcinogenicity:

Category 2

Reproductive toxicity:

Category 1BSpecific target organ toxicity single exposure:

Category 2 (Central nervous system, Kidney, Liver, respiratorysystem)

Specific target organ toxicity repeated exposure:

Category 2 (respiratory system, Nervous system)

Short-term (acute) aquatic
hazard:Category 3

Long-term (chronic) aquatic
hazard:Category 3

GHS label elements
Hazard pictograms:

Signal word:

Danger
1 / 13

SAFETY DATA SHEET

Sikaflex®-251
Version3.0Revision Date:
2023/03/26

SDS Number:
100000012302

Hazard statements:

Precautionary statements:

Date of last issue: 2021/10/28
Date of first issue: 2019/09/12

H317 May cause an allergic skin reaction.
H351 Suspected of causing cancer.
H360 May damage fertility or the unborn child.
H371 May cause damage to organs (Central nervous system,Kidney, Liver, respiratory system).
H373 May cause damage to organs (respiratory system, Nervous system) through prolonged or repeated exposure.
H412 Harmful to aquatic life with long lasting effects.
Prevention:
P201 Obtain special instructions before use.
P202 Do not handle until all safety precautions have been readand understood.
P260 Do not breathe mist or vapours.
P264 Wash skin thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P272 Contaminated work clothing should not be allowed out ofthe workplace.
P273 Avoid release to the environment.
P280 Wear protective gloves/ protective clothing/ eye protection/ face protection.
Response:
P303 + P361 + P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water.
P308 + P311 IF exposed or concerned: Call a POISONCENTER/ doctor.
P333 + P313 If skin irritation or rash occurs: Get medical advice/ attention.
P362 + P364 Take off contaminated clothing and wash it before
reuse.
Storage:
P405 Store locked up.
Disposal:
P501 Dispose of contents/ container to an approved waste
disposal plant.

Other hazards which do not result in classification
None known.
3. COMPOSITION/INFORMATION ON INGREDIENTS
Substance / Mixture:

MixtureComponents
Chemical name

CAS-No.

Titanium dioxide (> 10 μm)

13463-67-7
2 / 13Concentration (% w/w)>= 2.5 - < 10ENCS/ISHL
number1-558, 5-5225

SAFETY DATA SHEET

Sikaflex®-251
Version
3.0

Revision Date:
2023/03/26

SDS Number:
100000012302

Date of last issue: 2021/10/28
Date of first issue: 2019/09/12

xylene1330-20-7

3.83-3, 3-60

ethylbenzene

100-41-4

1.33-28, 3-60

hexahydro-4-methylphthalic anhydride

19438-60-9>= 0.1 - < 13-2450

4. FIRST AID MEASURES
General advice:

Move out of dangerous area.
Consult a physician.
Show this safety data sheet to the doctor in attendance.

If inhaled:

Move to fresh air.
Consult a physician after significant exposure.

In case of skin contact:

Take off contaminated clothing and shoes immediately.
Wash off with soap and plenty of water.
If symptoms persist, call a physician.

In case of eye contact:

Remove contact lenses.
Keep eye wide open while rinsing.
If eye irritation persists, consult a specialist.

If swallowed:

Clean mouth with water and drink afterwards plenty of water.
Do not give milk or alcoholic beverages.
Never give anything by mouth to an unconscious person.
Obtain medical attention.

Most important symptoms
and effects, both acute anddelayed:sensitising effects
Allergic reactions
See Section 11 for more detailed information on health effects
and symptoms.
May cause an allergic skin reaction.
Suspected of causing cancer.
May damage fertility or the unborn child.
May cause damage to organs.
May cause damage to organs through prolonged or repeatedexposure.

Notes to physician:Treat symptomatically.

Suitable extinguishing media:

Alcohol-resistant foam
Carbon dioxide (CO2)
Dry chemical

Unsuitable extinguishingmedia:

Water
High volume water jet

5. FIREFIGHTING MEASURES

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SAFETY DATA SHEET

Sikaflex®-251
Version
3.0

Revision Date:
2023/03/26

Specific hazards during firefighting

SDS Number:
100000012302:

Date of last issue: 2021/10/28
Date of first issue: 2019/09/12

Do not use a solid water stream as it may scatter and spread
fire.

Hazardous combustion prod- :ucts

No hazardous combustion products are known

Specific extinguishing methods

Use water spray to cool unopened containers.

:

Special protective equipment :for firefighters

In the event of fire, wear self-contained breathing apparatus.

6. ACCIDENTAL RELEASE MEASURES
Personal precautions, protec- :tive equipment and emergency procedures

Use personal protective equipment.
Remove all sources of ignition.
Deny access to unprotected persons.

Environmental precautions:

Prevent product from entering drains.
If the product contaminates rivers and lakes or drains inform
respective authorities.

Methods and materials forcontainment and cleaning up:

Soak up with inert absorbent material (e.g. sand, silica gel,acid binder, universal binder, sawdust).

Handling
Advice on protection against
fire and explosion:

Use explosion-proof equipment.
Keep away from heat/ sparks/ open flames/ hot surfaces. Nosmoking.
Take precautionary measures against electrostatic discharges.

Advice on safe handling:Do not breathe vapours or spray mist.
Avoid exceeding the given occupational exposure limits (seesection 8).
Do not get in eyes, on skin, or on clothing.
For personal protection see section 8.
Persons with a history of skin sensitisation problems or asthma, allergies, chronic or recurrent respiratory disease should
not be employed in any process in which this mixture is beingused.
Smoking, eating and drinking should be prohibited in the application area.
Take precautionary measures against static discharge.
Open drum carefully as content may be under pressure.
Take necessary action to avoid static electricity discharge(which might cause ignition of organic vapours).
Follow standard hygiene measures when handling chemical

7. HANDLING AND STORAGE

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SAFETY DATA SHEET

Sikaflex®-251
Version
3.0

Revision Date:
2023/03/26

SDS Number:
100000012302

Date of last issue: 2021/10/28
Date of first issue: 2019/09/12

productsAvoidance of contact:

No data available

Hygiene measures:

Handle in accordance with good industrial hygiene and safety
practice.
When using do not eat or drink.
When using do not smoke.
Wash hands before breaks and at the end of workday.

Storage
Conditions for safe storage:

Store in original container.
Keep in a well-ventilated place.
Observe label precautions.
Store in accordance with local regulations.

8. EXPOSURE CONTROLS/PERSONAL PROTECTION
Threshold limit value and permissible exposure limits for each component in the work environment
Components
xyleneethylbenzene

CAS-No.

Value type(Form ofexposure)
OEL-M

Control parameBasisters / Permissible
concentration
1330-20-7
50 ppmJP OEL
217 mg/m3
JSOH
Further information: Group 2: Substances presumed to cause
reproductive toxicity in humans
ACL
50 ppmJP OEL ISHL
TWA
20 ppm
ACGIH
100-41-4
ACL
20 ppmJP OEL ISHL
OEL-M
20 ppmJP OEL87 mg/m3
JSOH
Further information: Group 2: Substances presumed to cause
reproductive toxicity in humans, Skin absorption, Group 2B: possibly carcinogenic to humans
TWA
20 ppm
ACGIH

Biological occupational exposure limits
Components
xyleneCAS-No.

Target substance
1330-20-7 total (o-, m-,p)methylhippuric acid
Methylhippuric acids

5 / 13

Biologicalspecimen
Urine

Urine

Samplingtime
End ofshift atend ofworkweek
End ofshift (Assoon aspossibleafter exposure

Permissible
Basis
concentration
800 mg/l
JSOH

1.5 g/g creat- ACGIH
inine
BEI

SAFETY DATA SHEET

Sikaflex®-251
Version
3.0

Revision Date:
2023/03/26

ethylbenzene

SDS Number:
100000012302

100-41-4

Mandelicacid
Mandelic
acid +Phenylglyox
ylic acid
Ethylbenzene
Sum ofmandelicacid andphenyl glyoxylic acid

Urine
Urine

Urine
Urine

Date of last issue: 2021/10/28
Date of first issue: 2019/09/12ceases)
End ofshift
End ofshift at
end ofworkweek
End ofshift
End ofshift (Assoon aspossible
after exposureceases)

150 mg/g
Creatinine
200 mg/g
Creatinine

JSOH

15 µg/lJSOH

0.15 g/g creatinine

ACGIH
BEI

JSOH

Personal protective equipment
Respiratory protection: Use respiratory protection unless adequate local exhaust
ventilation is provided or exposure assessment demonstrates
that exposures are within recommended exposure guidelines.
The filter class for the respirator must be suitable for the maximum expected contaminant concentration(gas/vapour/aerosol/particulates) that may arise when handling the product. If this concentration is exceeded, selfcontained breathing apparatus must be used.
Hand protection:

Chemical-resistant, impervious gloves complying with anapproved standard should be worn at all times when handlingchemical products if a risk assessment indicates this is necessary.

Eye protection:

Safety eyewear complying with an approved standard should
be used when a risk assessment indicates this is necessary.

Skin and body protection:

Choose body protection in relation to its type, to the concentration and amount of dangerous substances, and to the specific work-place.

9. PHYSICAL AND CHEMICAL PROPERTIES
Physical state

:

paste

Colour:No data available

Odour

:

characteristicOdour Threshold:

No data available

Melting point/range / Freezing :point

No data available

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SAFETY DATA SHEET

Sikaflex®-251
Version3.0

Revision Date:
2023/03/26

SDS Number:
100000012302

Boiling point/boiling range:

No data available

Flammability (solid, gas):

No data available

Date of last issue: 2021/10/28
Date of first issue: 2019/09/12

Lower explosion limit and upper explosion limit / flammability limit
Upper explosion limit /: 7 %(V)Upper flammability limit
Lower explosion limit /Lower flammability limit:

1 %(V)

Flash point:ca. 50.5 °C(Method: closed cup)

Decomposition temperature:

No data available

pH:

Not applicable

Evaporation rate:

No data available

Auto-ignition temperature:

465 °C

Viscosity
Viscosity, dynamic:

No data available

Viscosity, kinematic:> 20.5 mm2/s (40 °C):

insoluble:

No data available

Partition coefficient: noctanol/water:

No data available

Vapour pressure:

7.9993 hPa

Solubility(ies)
Water solubility
Solubility in other solvents

Density and / or relative density
Density:
Relative vapour density

ca. 1.35 g/cm3 (20 °C):

No data available

Explosive properties:

No data available

Oxidizing properties:

No data available

Reactivity:

No dangerous reaction known under conditions of normal use.

Chemical stability:

The product is chemically stable.

10. STABILITY AND REACTIVITY

7 / 13SAFETY DATA SHEET

Sikaflex®-251
Version
3.0

Revision Date:
2023/03/26

SDS Number:
100000012302

Date of last issue: 2021/10/28
Date of first issue: 2019/09/12

Possibility of hazardous reactions:

Vapours may form explosive mixture with air.
No hazards to be specially mentioned.

Conditions to avoid:

Heat, flames and sparks.

Incompatible materials:

No data available

11. TOXICOLOGICAL INFORMATION
Acute toxicity
Not classified based on available information.
Components:
xylene:Acute oral toxicity:

LD50 Oral (Rat): 3,523 mg/kgethylbenzene:
Acute oral toxicity:

LD50 Oral (Rat): 3,500 mg/kg

Acute dermal toxicity:

LD50 Dermal (Rabbit): 5,510 mg/kg

Skin corrosion/irritation
Not classified based on available information.
Serious eye damage/eye irritation
Not classified based on available information.
Respiratory or skin sensitisation
Skin sensitisation
May cause an allergic skin reaction.
Respiratory sensitisation
Not classified based on available information.
Germ cell mutagenicity
Not classified based on available information.
Carcinogenicity
Suspected of causing cancer.
Reproductive toxicity
May damage fertility or the unborn child.
STOT - single exposure
May cause damage to organs (Central nervous system, Kidney, Liver, respiratory system).
STOT - repeated exposure
May cause damage to organs (respiratory system, Nervous system) through prolonged or repeatedexposure.
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SAFETY DATA SHEET

Sikaflex®-251
Version3.0

Revision Date:
2023/03/26

SDS Number:
100000012302

Date of last issue: 2021/10/28
Date of first issue: 2019/09/12

Aspiration toxicity
Not classified based on available information.
12. ECOLOGICAL INFORMATION
Ecotoxicity
Components:
xylene:Toxicity to fish (Chronic toxicity):

NOEC (Oncorhynchus mykiss (rainbow trout)): > 1.3 mg/l
Exposure time: 56 d

Toxicity to daphnia and other :aquatic invertebrates (Chronic toxicity)
ethylbenzene:
Toxicity to fish:

NOEC (Daphnia (water flea)): 1.17 mg/l
Exposure time: 7 d

M-Factor (Acute aquatic toxicity)1:

LC50 (Fish): <= 1 mg/l
Exposure time: 96 h

Persistence and degradability
No data available
Bioaccumulative potential
No data available
Mobility in soil
No data available
Hazardous to the ozone layer
Not applicable
Other adverse effectsProduct:
Additional ecological information:

There is no data available for this product.

13. DISPOSAL CONSIDERATIONS
Disposal methods
Waste from residues:

Send to a licensed waste management company.
The product should not be allowed to enter drains, watercourses or the soil.
Do not contaminate ponds, waterways or ditches with chemical or used container.

Contaminated packaging:

Empty remaining contents.
Dispose of as unused product.
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SAFETY DATA SHEET

Sikaflex®-251
Version
3.0

Revision Date:
2023/03/26

SDS Number:
100000012302

Date of last issue: 2021/10/28
Date of first issue: 2019/09/12

Do not re-use empty containers.
Do not burn, or use a cutting torch on, the empty drum.
14. TRANSPORT INFORMATIONInternational Regulations
UNRTDGUN number
Proper shipping nameClass
Subsidiary risk
Packing group
Labels
IATA-DGR
UN/ID No.
Proper shipping nameClass
Subsidiary risk
Packing group
LabelsPacking instruction (cargoaircraft)
Packing instruction (passenger aircraft)
IMDG-CodeUN number
Proper shipping nameClass
Subsidiary risk
Packing group
LabelsEmS Code
Marine pollutant::::::

Not applicableNot applicableNot applicableNot applicableNot applicableNot applicable

:
:
:
:
:
:
:

Not applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicable:Not applicable:
:::::
:
:

Not applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicable

Transport in bulk according to Annex II of MARPOL 73/78 and the IBC CodeNot applicable for product as supplied.
National Regulations
Refer to section 15 for specific national regulation.
Special precautions for user
Not applicable
15. REGULATORY INFORMATION
Related Regulations
Fire Service Law
Designated Flammable Substances
10 / 13SAFETY DATA SHEETSikaflex®-251
Version3.0

Revision Date:
2023/03/26

SDS Number:
100000012302

Date of last issue: 2021/10/28
Date of first issue: 2019/09/12

Industrial Safety and Health Law
Harmful Substances Prohibited from Manufacture
Not applicable
Harmful Substances Required Permission for Manufacture
Not applicable
Substances Prevented From Impairment of Health
Chemical name
Ethylbenzene
Circular concerning Information on Chemicals having Mutagenicity - Annex 2: Information on
Existing Chemicals having Mutagenicity
Not applicable
Circular concerning Information on Chemicals having Mutagenicity - Annex 1: Information on
Notified Substances having Mutagenicity
Not applicable
Substances Subject to be Notified Names
Article 57-2 (Enforcement Order Table 9)
Chemical nameTitanium(IV) oxide
XyleneEthylbenzene

Concentration (%)>=1 - <10>=1 - <10>=1 - <10Substances Subject to be Indicated Names
Article 57 (Enforcement Order Article 18)
Chemical nameTitanium(IV) oxide
xyleneethylbenzene

Remarks-Remarks-Ordinance on Prevention of Hazards Due to Specified Chemical Substances - Group 2 SubstanceChemical nameethylbenzene
Ordinance on Prevention of Lead Poisoning
Not applicable
Ordinance on Prevention of Tetraalkyl Lead Poisoning
Not applicable
Ordinance on Prevention of Organic Solvent Poisoning
Not applicable
Poisonous and Deleterious Substances Control Law
Not applicable
Act on Confirmation, etc. of Release Amounts of Specific Chemical Substances in the Environment and Promotion of Improvements to the Management Thereof

11 / 13SAFETY DATA SHEET

Sikaflex®-251
Version3.0

Revision Date:
2023/03/26

SDS Number:
100000012302

Date of last issue: 2021/10/28
Date of first issue: 2019/09/12

Until March 31st, 2023
Class I Designated Chemical Substances
Chemical nameCabinet Order Numberxylene
80
ethylbenzene
53

Concentration (%)
3.8
1.3

From April 1st, 2023
Class I Designated Chemical Substances
Chemical namexylene
ethylbenzene

Administration number
80
53

International Chemical Weapons Convention (CWC)
Schedules of Toxic Chemicals and Precursors:

Concentration (%)
3.8
1.3

Not applicable

High Pressure Gas Safety Act
Not applicable
16. OTHER INFORMATION
Date format:

yyyy/mm/dd

Full text of other abbreviations
ACGIH: USA. ACGIH Threshold Limit Values (TLV)
ACGIH BEI
: ACGIH - Biological Exposure Indices (BEI)
JP OEL ISHL
: Japan. Administrative Control Levels
JP OEL JSOH
: Japan. The Japan Society for Occupational Health. Recommendation of Occupational Exposure Limits
JSOH: Occupational exposure limits based on biological monitoring(JSOH).
ACGIH / TWA: 8-hour, time-weighted average
JP OEL ISHL / ACL: Administrative Control level
JP OEL JSOH / OEL-M: Occupational Exposure Limit-MeanADR: European Agreement concerning the International Carriage ofDangerous Goods by RoadCAS
: Chemical Abstracts Service
DNEL: Derived no-effect level
EC50: Half maximal effective concentration
GHS: Globally Harmonized System
IATA: International Air Transport Association
IMDG: International Maritime Code for Dangerous Goods
LD50: Median lethal dosis (the amount of a material, given all atonce, which causes the death of 50% (one half) of a group oftest animals)
LC50: Median lethal concentration (concentrations of the chemical in
air that kills 50% of the test animals during the observation
period)MARPOL: International Convention for the Prevention of Pollution fromShips, 1973 as modified by the Protocol of 1978
OEL
: Occupational Exposure Limit
12 / 13SAFETY DATA SHEET

Sikaflex®-251
Version3.0

Revision Date:
2023/03/26

SDS Number:
100000012302

PBTPNEC
REACH:::SVHCvPvB::

Date of last issue: 2021/10/28
Date of first issue: 2019/09/12

Persistent, bioaccumulative and toxic
Predicted no effect concentration
Regulation (EC) No 1907/2006 of the European Parliamentand of the Council of 18 December 2006 concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), establishing a European Chemicals Agency
Substances of Very High Concern
Very persistent and very bioaccumulative

The information contained in this Safety Data Sheet corresponds to our level of knowledge at thetime of publication. All warranties are excluded. Our most current General Sales Conditions shallapply. Please consult the product data sheet prior to any use and processing.
JP / EN

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