3764 Federal Register / Vol. 59, No. 17 / Wednesday, January 26, 1994 / Notices

ENVIRONMENTAL PROTECTION

AGENCY

[OPPTS-41040; FRL-4750-G]

Thirty-Third Report of the TSCA

Interagency Testing Committee to the

Administrator, Receipt of Report and

Request for Comments

AGENCY: Environmental Protection

Agency (EPA).

ACTION: Notice.

SUMMARY: The TSCA Interagency

Testing Committee (ITC), established

under section 4(e) of the Toxic

Substances Control Act (TSCA),

transmitted its Thirty-Third Report to

the Administrator of EPA on November

29, 1993. As noted in this Report, which

is included with this notice, the ITC

revised the Priority Testing List by

removing 2 chemicals and 4 chemical

groups from the List for priority

consideration by the EPA Administrator

for promulgation of test rules under

section 4(a) of the Act. The chemicals

being removed are 2,4-dinitrophenol

and 3,4-dimethylphenol. The groups

being removed are imidazolium and

ethoxylated quaternary ammonium

compounds (8 chemicals), brominated

flame retardants (23 chemicals), and

alkyl phosphates (20 chemicals). The

Report indicates that removal of these

chemicals and chemical groups from the

List should be interpreted emily as a

reordering of priorities and not a

statement that the testing recommended

earlier hasbeen cmnpleted or is not

needed. Prior to removing chemicals

from the List, the ITCreviewed about 80

TSCA section 8(a reports'and'850

TSCA section .3(d) studies."The ITC is

sharing summaries of these reviews

with appropriate EPA programs offices

and other concerned Federal agencies to

assist them in risk assessment and

management activities.

There are no additions to the Priority

Testing List.

EPA invites interested persons to

submit written comments on the Report.

DATES: Written comments on the Thirtythird ITC Report should be submitted by

February 25, 1994.

ADDRESSES: Send six copies of written

submissions to: TSCA Docket Receipts

(7407), Office of Pollution Prevention

and Toxics, Environmental Protection

Agency, Rm. ET G-99, 401 M St., SW.,

Washington, DC 20460. Submissions

should bear the document control

number (OPPTS-41040; FRL-4750-9).

The public record supporting this

action, including comments, is available

for public inspection in Rm. ET G-102

nt the address noted above from 12:00

noon to 4 p m., Monday through Friday.,

excePt leaJ helidays.

FOR FURTHER INFORMATION CONTACT.

Susan B. Hazen, Director,

Environmental Assistance Division

(7408), Office of Pollution Prevention

and Toxics, Environmental Protection

Agency, 401 M Street, SW., Rm. E543B, Washington, DC 20460, (22)

554-1404, TDD (202) 554-055L

SUPPLEMENTARY INFORMATION: ,EPA ;has

received the TSCA Interagency Testing

Committee's Thirty-Third Report to the

Administrator.

1. Background

TSCA (Pub. L. 94-469, 90 Stat. 2WO3

et seq; 15 U.S.C. 2601 et seq.),authorizes

the Administrator of EPA to promulgate

regulations under section 4(a) equiring

testing of chemicals amd chemical

groups in order to develop data relevant

to determining the risks thatsuch

chemicals and chemical groups may

present to health or the envirnment.

Section 4(e) of TSCA established the

Interagency Testing Committee to

recommend chemicals and chemical

groups to the Administrator of EPA for

•prioritytesting-consideration. Section

4(e) directs the ITC to revise 1he TSCA

section 4(e) P ority Testing List zt least

every 6 months. The' most recent

revisions to this List are included in the

ITC's Thirty-Third Report. The Report

was received by the Administrator on

November 29. 1993, and is included in

this Notice. The Report removes two

cdernicals -and Sour chemical groups

fom the TSCA section 4(e) Priority

Testing List.

These chemical substances and

chemical groups were previously added

'to 'the TSCA section 8(d) Health and

SafetylBata Reputing Rule (40 CFR part

.71,6) in esponse'to the ITC testing

recommendations. These-substances

will be considered for removal fom -the

8(d) rule during the next 8(d) rule

"biennial review," scheduled to occur

during 1995. See 40 CFR 716.A9fb).

II. Written and Oral Comments

EPA invites interested persons to

submit detailed comments on the TrC's

Report. All submissions should bear the

identifying docket number (OPPT41040).

III. Status of List

The ITC's Thirty-Third Report ndtes

the removal of 2 chemicals and 4

chemical groups from the Prjorfty

Testing List. The current TSCA -section

4(e) Priority Testing List contains 16

chemicals and 12 chemical groaps, with

two chemical groups and 7 chemicals

designated for testing.

Authority: 15 U.S.C. 2603.

Date'd: January 11, 1994.

Charles M. Auer,

Director, Chemical Control Division, Office

of Pollution Prevention and Toxics.

Thirty-Third Report Of The TSCA

Interagency Testing Committee To The

Administrator, U.S. Environmental

Protection Agency

'Summary: This is the 33rd Report of

the TSCA Interagency Testing

Committee (ITC) to the Administrator of

the U.S. Environmental Protection

Agency (EPA). The ITC is revising its

Priority Testing List by removing two

cliemicals and four chemical groups.

The chemicals being removed are 2,4-

dinitrophenol and 3,4-dimethylphenol.

The groups being removed are

imidazolium and ethoxylated

quaternary ammonium compounds,

brominated flame retardants, and alkyl

phosphates. These revisions are based

on current priorities of ITC Member

agencies and a review of production and

exposure reports and health and safety

studies submitted by manufacturers,

processors, and distributors for these

chemicals and chemical groups.

I. Background

The TSCA Interagency Testing

Committee (ITC) was established by

subsection 4(e) of the Toxic Substances

Control Act (TSCA) "to make

recommendations to the Administrator

respecting the chemical substances and

mixtures to which the Administrator

should give priority consideration for

the promulgation of a rule for testing

under subsection 4(a)... At least every 6

months.... the Committee shall make

such revisions in the List as it

determines to be necessary and to

transmit them to the Administrator

together with the Committee's reasons

for the revisions" (Public Law 94-469,

90 Stat. 2003 et seq., 15 U.S.C. 2601 et

seq.). Since its creation in 1976, the ITC

has submitted 32 semi-annual Reports

to the EPA Administrator transmitting

the Priority Testing List and its

revisions. These Reports have been

published in the Federal Register and

are available from the ITC. The ITC

meets monthly and produces its

revisions with the help of staff and

technical contract support provided by

EPA. ITC membership and support

personnel are listed at the end of this

Rellowing receipt of the ITC's Report,

the EPA's Office of Pollution Prevention

and Toxics may promulgate TSCA

-subsection 8(a) and 8(d) rules that

require manufacturers, processors, and/

or distributors of chemicals on the
Federal Ri*tder J VoL $9, No. t7 J1 Wednesday, januay 26, 194 / ,Ntices

Jior1'eti~g1Uist~o sulauIit

-production and exposure data (8a), and

health nnl safetystudies 4a. within.2

menatis of the rules' effetwe dates. The

~sabissirmas we indexed -anid

maintained by EPA. The ITC reviews

the 8(a) and 8(d) information and other

available data on chemicals and

chemical groups to determine if

revisions to the Priority Testing List are

necessary. Revisions include changing a

rrxmeudatontadeeian for

action by"theAdm ngaimstb wifi n 12

.months, .modjilyfig~herecommended

testing, or removing the chmical or

gautp from he List.

The substituted phenols were

recommended for testing in 1990 and

the chemical groups were added to the

Priority Testing List following the

Committee's 198,6 sixth. scoring exerdse

(Ref. 1). The sixth scoring exercise was

a syibemaic, c mpatecized chemrnal

selection procedure for identifying

chemicals ofcAnera, Lurther efimed by

chemical substructural features REL 5).

IL Aevisos to the T CA Section 41eI

Priority Testing List

The TC removes the ollowiag

chemicals and chemical groups from the

TSCA SeCtion ,4 e) Priority'Testing List

TABLE 1 .--G EMICALS AND CHEMICAL GROUPS REMOVED FROM THE TSCA SECTION 4(e) PRIORITY TESTING LIST IN ITC's

33RD REPORT

CAS No. Chemical/Group Action Date

51-28-5 ........ 2,4-Dinitrophenol ......... ............... emove *PfevWosiy Rec- 1.1/93

ommended Chemical.

95-65-8 ........ 3,4-Dimethylphenol .......................................................................................... Remove Previously Rec- 11/93

ommended Chemical.

Imidazollum and ethoxylated quaternary ammonium compounds Remove Previous*y Rec- 1193

ommended Chemical Group.

68122-86-1 ... Imidazolium compounds, 4,5-dihydro-l-methyl-.

68153-35-5 ... Ethanaminium, 2-amino-N-(2-aminoethyl).

68389-88-8 ... Poly(oxy-1,2-ethanediyl), a-[24[bis(2-aminoethyl)- methylammonio]-ethyl-ohydroxy-,N,N'-dicoco acyl) derivs., methyl sulfates (salts).

68389-89-9.... Poly(oxy-1,2-ethanediyl), a-[24[bis(2-aminoethyl)- methylammonio]-ethyl]-ehydroxy-,N,N'-bis(hydrogenated tallow acyl) derivs., methyl sulfates (salts).

68410-69-5 ... Poly(oxy-1,2-ethanediyl), a-[2[bis(2-aminoethyl)- methylammonio]-ethyl]-e,-

hydroxy-, NN'-ditallow acyl derivs., methyl sulfates (salts).

68413-04-7 ... Poly(oxy-1,2-ethanediyl), .9-[2-[bis(2-aminoethyl)- methylammonio]-

methylethyl]-o-hydroxy-, N,N'-di tallow acyl derivs., methyl sulfates (salts).

68554-06-3 ... Poly(oxy-1,2-ethanediyl), a-[3-[bis(2-aminoethyl)- methylammoriiol-'2-

hydroxypropyl]-e-hydroxy-, N- coco acyl derivs., methyl sulfates (salts).

70914-09-9 ... Poly(oxy-1,2-ethanediyl). a-[2-[bis(2-amlnoethyl)- methylammonio]-ethyl]-oI hydroxy-, N,N'-di-C,4-16 acyl oderivs., methyl sulfates (salts).

118-79-,6

,632-79-1

Bvomlnated flame retardarits -

2,4,6-TribromophenoL

Tetrabremophthalic ,anhydride.

:-.9-90-0 .... Diboinnmpe ltlglv, iL

32068-764 .. Ethylene bisetabmophthalimide).

41291-34-3 ... 'Ethyle 'isr(5,5-d.bromonoitomane-2,3- b dicarboximide).

57137-10-7 -_. T.ibrominated polystyrene.

r5 1262-53-1..

74-97-5 ........

87-10-5

,Ethylene ,bis(pmtabromqphenoxid).

Brominat d flame retardnts •

Bromoclloromethane.

$8;4',5-Tribromosalicylanilide.

,87-83-2 ... ... 3,4495 Peatabromotaluene.

W-"-3 ......... .;2S,4,5-Perttlbromo.)-ctlorocyclohexane.

96-13-9 ......... 2,3-Dibromopropanol.

593-A60-2

615-5-,7 .

4162-,45-2

2532?--69- B ...

30554-72-4

30554-n73-6 .-

'Vinyl bomide.

.2,4-DibrorphenoL

611hoxJIdted tetratmrmabiszkenol A.

Tetrbromobislihendl A,bisgallyl ether).

Tetrabromodichlorcclohexane.

'bromfrcblorwcldhexane.

'Remove Pev/iuly leoommended Chemical Group.

Remove Previously iRecommended Oherftcal Group.

41/93

11193

3'765
Federal Register I Vol. 59, No. 17 / Wednesday, January 26, 1994 / Notices

TABLE 1.--CHEMICALS AND CHEMICAL GROUPS REMOVED FROM THE TSCA SECTION 4(e) PRIORITY TESTING LIST IN ITC'S

33RD REPORT--Continued

CAS No. Chemical/Group Action Date

36483-57-5 ... Tribromoneopentyl alcohol.

55205-38-4 ... Tetrabrombbisphenol A diacrylate.

68955-41-9 ... Alkanes, Co-C,6, bromochloro.

69882-11-7 ... 2,4-(or 2,6)-Dibromophenol, homopolymer.

88497-56-7 ... Benzene, ethenyl-, homopolymer, brominated.

Alkyl phosphates Remove Previously Rec- 11/93

ommended Chemical Group.

78-40-0 ......... Tethyl phosphate.

78-42-2 ........ Tds(2-ethythexyl) phosphate.

78-51-3 ......... Tris(2-butoxyethyl) phosphate.

107-66-4 ....... DI-n-butyl phosphate.

126-71-6 ....... Trfisobutyl phosphate.

126-73-8 ....... Tri-nuty phosphate.

298-07-7 ....... Di(2-ethylhexyl) phosphate.

812-00-0 ....... Monomethyl phosphate.

1070-03-7 ..... Mono(2-ethylhexyl) phosphate.

1498-51-7 ..... Ethyl dichlorophosphate.

1623-15-0 ..... n-Butyl phosphate.

1623-24-1 ..... Monolsopropyl phosphate.

2958-09-0 ..... Monooctadecyl phosphate.

3900-04-7 ..... Monohexyl phosphate.

3991-73-9 ..... Monooctyl phosphate.

7057-92-3 ..... DI-n-dodecyl phosphate.

7332-46-9 ..... 2-(2-Butoxyethoxy)ethanol phosphate (3:1).

12645-31-7 ... 2-Ethylhexyl phosphate.

12751-23-4 ... Dodecyl phosphate.

27215-10-7 ... Diisooctyl phosphate.

a Brominated flame retardants were recommended as 2 groups in the 25th Report (7 chemicals) and 26th Report (16 chemicals).

Ill. Rationale for the revisions

A. ITC's Activities During this Reporting

Period

During the 6 months covered by this

Report, May through October 1993, the

ITC reviewed the 8(a) and 8(d)

submissions and other available data for

chemicals and chemical groups

recommended in its 22nd, 23rd, 25th,

26th, and 27th Reports. The Federal

Register citations for the 8(a) and 8(d)

rules and the number of 8(d) studies

reviewed by the ITC for each chemical

or chemical group are summarized in

the following Table 2. Approximately 80

TSCA 8(a) reports were reviewed by the

ITC; but the exact number is not

reported for each chemical or group to

protect TSCA Confidential Business

Information.

TABLE 2.- NUMBER OF TSCA SECTION 8(D) STUDIES REVIEWED BY THE

ITC FOR CHEMICALS AND CHEMICAL

GROUPS DISCUSSED IN THIS 33RD

REPORT

TSCA Section 8(d) 8(a) and 8(d) S(- Chemical/Group Rules FR Cita- s

tions ies

2,4-Dinitrophenol .....

3,4-Dimethylphenol..

Imidazolium and

ethoxylated quaternary ammonium

compounds.

Brominated flame

retardants a.

Brominated flame

retardants a.

56 FR 42688,

August 29,

1991.

56 FR 42688,

August 29,

1991.

53 FR 18211,

May 20,

1988.

54 FR 51131,

December

12, 1989.

55 FR 39780,

September

28, 1990.

TABLE 2.- NUMBER OF TSCA SECTION 8(D) STUDIES REVIEWED BY THE

ITC FOR CHEMICALS AND CHEMICAL

GROUPS DISCUSSED IN THIS 33RD

REPORT-Continued

TSCA Section 8(d)

8(a) and 8(d) Stud- ChemicalRGroup FR Citations

Alkyl phosphates ..... 55 FR 39780, 313

September

28, 1990.

,o2 a Brominated flame retardants were rec- ommended as two groups in the 25th and

90 26th Reports.

Also during this reporting period, the

ITC reevaluated the priority for testing

192 these chemicals and chemical groups at

the urging of EPA in view of current

EPA and Member agency priorities. The

268 ITC has determined that the chemicals

and groups listed in its recent Reports

are of higher priority than some of the

3766
Federal Reis6er / Vol. 59, No. 17 / Wednesday January 26, 1%94 ,1 Nofices

chemicals recommendd in erlier

Reports and is rem-dering p'ioridies to

" reflect iis ,determintion. For the

chemicals Temoved !rom 'the Lst, the

ITC will forward to the appropriate EPA

program 'officers, or .dther.FederalGovernment organizatons, its review,of

8(d) studies and ethier relevant

information tn assist them in risk

assessment aM managemen activities,

regulatory actions, or for renomination

to the TSCA sectiom tfe) Piozity Testing

.st.' The ITCwill 'alse inchide these

TSCA sdjsmmry repots in the

public ducdket supportlngthis IPC

Report. In'those cases in which the

testing recommendations originally

made by the ITC 'have net been met, the

ITC encouaes manufacturers,

processors, and distributors of the

removed uhiric aIs o conduot

voluntary testing progrtms to provide

the recommended test data.

B. Specific ,Ratio'teks

1. 2,4-Dinitrophenol and 3,4-

Dimethylphenal. These substitured

phenols were mominated to the ITC by

EPA ih June 1g90 and added to the

Priority Testing List in November 1990.

Chemical fate, health effects and

ecological effects testing were

recommended -as described in the ITE's

27th Report to the EPA Administrator

(56 FRSJ .4, March '6, -19M). The

rationale for recommending health

effects e9-ing of thesw chemicals was to

provide-needed Lest data to increase.the

confidence for EPA's Reference

Concentrations T C) and Reference

Doses R, U). 'The rationale ior

recommending chemical late and

ecological effects testing was to provide

data 'that rould be used by EPA to assess

ecological risk. *

Based on a review of 8(d) studies for

these chemicals, the recommended

testing has not been conducted.

However, the ITC decided that these

testing recommendations are currently

of relatively lower priority than others

and em es l e chemicals from the

Priority Testing List.

2. Imidazolium and ethoxylated

quaternary amzhonium compounds.

Imidazolium and ethoxylated

quaternary ammonium compounds were

recommended for health effects,

chemical fate and ecological'effects

testing in the ITC's 22Wd Report (531FR

18196, May 20, 1988). The mar

concerns were' for long-term dermal

consumer exposure, toxicity to aquatic

organisms and persistence in aquatic

environments. For this :33rd Report the

ITC reviewed toxicity and exposuredata

summarized in the 22ndReport, data

submitted to EPA under TSCA -sections

8(a) and 8(d) and reports from the

Chemidal Speciaies Mandactrwing

Assoda" .(CSMAj descrlbi-ig

structueS, itestiq and uses Cf

imidazoliu m nde thoeylated

quatey amxuln compounds ,in

fab6c.ooReners, and studieson health

effects, chemical fateand ecological

effects fftf. 2,, 3, and 4). Af.erreviewing

all these studies, the I'Cconcludes .that

there Ais a additional uspiclon of

health hazard or hu-man exposure for

these quaternary ammonium

compounds and -that potential effeots to

aquatic organisms are likely to be

mitigated by the binding of these

quateriaary ammonium cmpounds to

particulate organic carbon. For these

reasons, -the ITC .believes that the

previously recommended testing is not

of suffioiently high priority at this time.

The imidazolium and ethoxylated

quaternary ammonium compounds are,

therefore, being removed from the

Priority Testing List. If, in the future,

sufficient concers arise xegarding' the

health orecological ,effects of these

compounds, individual.members 'of this

group may be designated fortesting

3. &omin ,aedFJaare Retardants. Two

groups ofraorinated flame -retardants

were added to the Priority Testing List

in Novemnber 1989 and May 1990.

Chronic health and ecological vffects

and physical/chemical properties and

persistence testing were recommended

for a group of seven brominated flame

,retardants in the ITC-s 25th Report J54

FR 51114, December 12, 1989).

Physical/chemical properties and

persistence testing were recommended

fora group of 16 brominated flame

retardants in the ITC's 26th Report .55

FR 23050, June 5, 1990). Based on

review of TSCA section 8(a) and 8Td)

submissions, -vailable production date

and EPA's testing priorities, the ITC

removes the brominated flame

Tetardants from the PriorityTesting List.

The most recent, available production

data reviewed by the ITC were

submitted to EPA in response to the.

1990 TSCA Inventory Update Rule t55

,FR 39586, September 27, 1990) and the

8(a) rules.

Fifteen of the brominated flame

vetardants are being removed from the

List because they are not known to be

domestically produced or imported in

substantial quantities. These include 3

from the 25th Report thylene

bis(tetrabromophth~limide) (32588-76-

4); ethylene bis(5,6-dibromonorbornane2,3-dicarboximide) (41291-34-3) and

ethylene bis(pentabromophenoxide)

161262-53-1) and 12 from the 26th

Report: 3,4',5-tribromo- salicylanilide

187-10-,5); 2,3,4,5,6-pentabromotoluene

{8 7--3-2, 1,2,3,4,5-pentabrom o--

chlorocyclohexane (67-64-3); 2,3-.

dibroampropanol 96-13-. 9); 2,4-

dibranxqhenol (61 5-58-73, ethoxylated

tetrabromobisphenao A (4162-45--2

tetrabwmacbisphenol A bisalyl ederj

(25327-89-3);

tetrabromodichlorocyclohexane (3554-

72-4, tribromotricblorecyclohexane

(30554-73-f- tdrwomaneopentyl

alcohol 136483--57-55;

tetrabrmmobisphenul A diacrylate

(55205-38-4) and Cio-,

bromodhiluralknes (*6955-41-9).

Tsibraminated polystyrene (57137-

10-7j hum ithe :25th. Report; 2,4-(or 2,61-

dibromophenol ,haopolymer (6S2-

1t-7) and braminated polystyreae.

(Se497-5'6-7) from the 26th Repodt are

being e oved -from the List because

they are polymers with a lower

probability of absorption into biological

tissues than mopolym aric organic

chemicals.

Dibromoneoppntyl glycol (3296-Ais-0)

from the .25th Repor t as wellas

brommerahlornethane (74-97-S) and

vinyl bromide Xi93-6&-2) fr m the Z6th

Report are being removed from the List

because their health vffects are

reasonably well charateTi ed and their

occupational and environmental

exposures can be estimated.

2,4;-.rrromophenol (118-79-6) and

•tet.rabremophthal.ic ,nhydride {632-79-

1) from the 25th Report are being

removed from the List at this time to

give adequate priority to recently

identified testing needs for other

chemicals.

The ITChas prepared a report

summarizing its review of theTSCA

S(dJ studies for transmittal to the EPA's

Existing Chemical Program and other

appropriate Federal Government

DTgantdtions for possible risk

assesmnemt and management activities,

regulatory actions, or for renomination

to the TSCA section 4(e) Priority Testing

List. This TSCA t(d) summary report is

included in the public docket

suppo this ITC Report.

.Al phosphates. Twenty alkyl

phosphates were added to the Priaoriy

Testing Lst in May 1990. Physicalf

chemical properties and persistence

testing were recommended in the ITC's

26th Report to the Administrator (55 FR

23050, unae S, 1990.

The following 13 alkyl phosphates are

being removed from the Priority Testing

List because they ure not known to be

domestically produced or importied in

substantial quantities: dibutyl

phosphate (107-66-.4. ' triisobutyl

phosphate {126-71- 6), monomethyl

phosphate (812-0-0), moeo(2-

ethylhexylj phosphate (1070-03-7).

monobutyl phosphate (1623-15-0),

monolisopropyl) phosphate T1623-24-

1), monooctadecyl phosphate f2958-09-

37.67
Federal Register / Vol. 59, No. 17 / Wednesday, January 26, 1994 / Notices

0), monohexyl phosphate (3900-04-7),

monooctyl phosphate (3991-73-9), di-ndodecyl phosphate (7057-92-3), 2-(2-

butoxy)ethanol phosphate (7332-46-9),

dodecyl phosphate (12751-23-4) and

diisooctyl phosphate (27215-10-7).

Testing to provide physical/chemical

properties and persistence data for

tributyl phosphate (126-73-8) is being

conducted under TSCA section 4 (54

FR, 33400, August 14, 1989). The

remaining 6 alkyl phosphates have

substantial production volumes: triethyl

phosphate (78-40-0), tris(2-ethylhexyl)

phosphate (78-42-2), tris(2-

butoxyethyl) phosphate (78-51-3), di(2-

ethylhexyl) phosphate (298-07-7), ethyl

dichlorophosphate (1498-51-7) and 2-

ethylhexyl phosphate (12645-31-7).

The ITC is removing them from the

Priority Testing List because they are not

of sufficiently high priority at this time.

Dibutyl phosphate, which the ITC is

removing from the Priority Testing List

because it is not substantially produced

in the U.S., is currently being tested as

part of the Organisation for Economic

Cooperation and Development (OECD)

Screening Information Data Set (SIDS)

program. The six "substantiallyproduced" alkyl phosphates being

removed from the List at this time are

on OECD's High Production Volume list

of chemicals and may be subject to SIDS

testing in the future. Therefore, the ITC

has forwarded a report summarizing its

information.on the alkyl phosphates to

the U.S. representative to the OECD

SIDS program. The ITC has prepared a

report summarizing its review of the

TSCA 8(d) studies to send to the EPA's,

Existing Chemical Program and other

appropriate Federal Government

organizations for possible risk

assessment and risk management

activities, regulatory actions, or for

renomination to the TSCA section 4(e)

Priority Testing List. This TSCA 8(d)

summary report is included in the

public docket supporting this ITC

Report.

C. References

(1) Brink, R.H. and Walker, J.D. TSCA

Interagency Testing Committee sixth scoring

exercise. U.S.EPA-68-02-4251. Office of

Pollution Prevention and Toxics.

Washington, DC (1987).

(2) Chemical Specialties Manufacturing

Association. "Response to EPA's information

needs on imidazolium quaternary

ammonium compounds and ethoxylated

quaternary ammonium compounds." OPTS

Docket #41029, Washington, DC: OPPT,

USEPA (1988).

(3) Chemical Specialties Manufacturing

Association. Additional information on imidazoliun quaternary ammonium

compounds and ethoxylated quaternary

ammonium compounds." OPTS Docket

#41029, Washington, DC. OPPT, USEPA

(1993).

(4) TSCA Interagency Testing Committee.

Summary tables of TSCA section 8(d) studies

for imidazolium and ethoxylated quaternary

ammonium compounds. OPTS Docket

#41029, Washington, DC: OPPT, USEPA

(1993).

(5) Walker, J.D. Chemical selection by the

TSCA Interagency Testing Committee: Use of

computerized substructure searching to

Identify chemical groups for health effects,

chemical fate and ecological effects testing.

Science of the Total Environment. 109/

110:691-700 (1991).

IV. The TSCA Section 4(e) Priority

Testing List, as Revised November 1993

The following chemicals and

chemical groups remain on the Priority

Testing List as revised by the ITC in

November 1993.

THE TSCA SECTION 4(e) PRIORITY TESTING LIST (NOVEMBER 1993)

Report Date Chemical/Group Action

November 1988

November 1988 .....

November 1988 .....

November 1988 .....

November 1988 .....

November 1988 .....

May 1990 ...............

November 1990 .....

November 1990 .....

November 1990 .....

November 1990 .....

November 1990 .....

November 1990 .....

November 1990 .....

November 1990 .....

November 1990 .....

May 1991 ...............

May 1991 ...............

May 1991 ...............

May 1991 ...............

November 1991 .....

November 1991 .....

May 1992 ...............

May 1992 ...............

January 1993 .........

January 1993 .........

Butyraldehyde ................................................................................

Tetrakis(2-chloroethyl)ethylene diphosphate ..........................................

Tds(1,3-dlchloro-2-propyl) phosphate ....................................................

Tris(1-chloro-2-propyl) phosphate ..........................................................

Tris(2-chloro-l-propyl) phosphate .........................................................

Tris(2-chloroethyl)-phosphate .................................................................

Isocyanates .................................................................................

Acetophenone ................................................................................

Phenol ....................................................................................

N,N-Dimethylaniline .................................. :..

Ethylacetate .................................................................................

2,6-Dim ethylphenol ............................................................................

Aldehydes ................. ...........................................................................

N-phenyl-1-naphthylam ine". .....................................................................

Suffones ................ ..........................................................................

Substantially produced chemicals In need of subchronic toxicity testing

Acetone ....................................................................................

Thiophenol ..................................................................................

m -Dinitrobenzene ..............................................................................

Cyanoacrylates ..................................

W hite phosphorus .............................................................................

Alkyl-, bromo-, chloro-, hydroxymethyl diaryl ethers ..............................

Siloxanes ................................................................ ..............................

Chloroalkyl phosphates ...................................

OSHA chemicals with no dermal toxicity data .......................................

Propylene glycol ethers and esters (revised) .........................................

Recommended.

Recommended with intent-to-designate.

Recommended with intent-to-designate.

Recommended with intent-to-designate.

Recommended with intent-to-designate.

Recommended with intent-to-designate.

Recommended with Intent-to-designate.

Designated.

Designated.

Designated.

Designated.

Designated.

Recommended with intent-to-designate.

Recommended.

Recommended.

Recommended.

Designated.

Designated.

Recommended.

Recommended.

Recommended.

Recommended.

Recommended.

Recommended.

Designated.

Recommended.

3768
Federal Register / Vol. 59, No. 17 / Wednesday, January 26, 1994 / Notices

THE TSCA SECTION 4(e) PRIORITY TESTING LIST (NOVEMBER 1993)-Continued

Report Date Chemical/Group Action

31 January 1993 . Methyl ethylene glycol ethers and esters (revised) ................ Recommended.

32 May 1993 ............... OSHA chemicals with insufficient dermal absorption data ..................... Designated.

TSCA INTERAGENCY TESTING. COMMITTEE STATUTORY ORGANIZATIONS

AND THEIR REPRESENTATIVES

Organization Member

Council on Environ- Vacant

mental Quality.

Department of Com-. Willie E. May,

merce. Member

Edward White,

Alternate

Environmental Protec- Dave Williams,

tion Agency. Member

Lois Dicker, Alternate

National Cancer Institute.

National Institute of Environmental Health

Sciences.

National Institute for Occupational Safety and

Health.

National Science Foundation.

Occupational Safety and

Health Administration.

Thomas P. Cameron, Member

Richard Adamson, Alternate

Errol Zeiger,

Member

Robert W.

Mason, Member

Henryka Nagy,

Alternate

Carter Kimsey,

Member, Chair

Jarvis L. Moyers,

Alternate

Christine Whittaker, Member,

Vice Chair

Surender Ahir,

Alternate

TSCA INTERAGENCY TESTING COMMrrEE STATUTORY ORGANIZATIONS

AND THEIR REPRESENTATIVESContinued

Organization Member

Liaison Organizations and

Their Representatives.

Agency for Toxic Sub- William Cibulas,

stances and Disease Member

Registry.

Consumer Product Val Schaeffer,

Safety Commission. Member

Lakshmi C.

Mishra, Alternate

Department of Agri- Donald Derr,

culture. Member

Cliff Rice, Alternate

Department of Defense Randall S.

Wentsel, Member

Department of the Inte- Jim Petty, Memrior. ber

Barnett A.

Rattner, Alternate

Food and Drug Adminis- Edwin J. Mattration. thews, Member

Raju Kammula,

Alternate

National Library of Med- Vera Hudson,

icine. Member

TSCA INTERAGENCY TESTING COMMITTEE STATUTORY ORGANIZATIONS

AND THEIR REPRESENTATIVESContinued

Organization Member

National Toxicology Pro- Victor A. Fung,

gram. Member

Counsel ............................ Mary Ellen Levine, Office of

the General

Counsel, EPA

Technical Support Con- Syracuse Retractor. search Corporation

ITC Staff ........................... John D. W alker,

Executive Director

Norma S.L. Williams, Executive Assistant,

TSCA Interagency Testing Committee,

U.S. EPA/

OPPT (7401)

401 M St.,

SW., Washington, D.C.

20460, (202)

260-1825.

[FR Doc. 94-1618 Filed 1-25-94; 8:45 amj

BILLING CODE 6560-.0-F "

3769