### 3764 Federal Register / Vol. 59, No. 17 

### / Wednesday, January 26, 1994 / Notices

ENVIRONMENTAL PROTECTION AGENCY [OPPTS-41040; FRL-4750-G] Thirty-Third Report of theTSCA 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) ofthe Toxic Substances Control Act (TSCA), transmitted its Thirty-Third Report to the Administrator ofEPA on November 29, 1993. As noted in this Report, which is included with this notice, the ITC revised the PriorityTestingListby removing 2 chemicals and 4 chemical groups from the Listfor priority consideration by the EPA Administrator for promulgation oftest rules under section 4(a) ofthe Act. The chemicals being removed are 2,4-dinitrophenol and 3,4-dimethylphenol. The groups being removed are imidazolium and ethoxylated quaternary ammonium compounds (8chemicals), brominated flame retardants (23 chemicals), and alkyl phosphates (20 chemicals). The Report indicates that removal ofthese chemicals and chemical groups from the List shouldbe interpreted emily as a reordering of priorities and not a statement that the testing recommended earlier hasbeencmnpleted or is not needed. Prior to removing chemicals from the List,theITCreviewed about 80 TSCA section 8(a reports'and'850 TSCA section .3(d) studies."The ITCis sharing summaries ofthese 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 TestingList.

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 ofwritten submissions to: TSCA Docket Receipts (7407), Office ofPollution Prevention and Toxics, Environmental Protection Agency, Rm. ETG-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 to4p m., Monday through Friday., 

### excePt leaJhelidays. FOR FURTHER INFORMATION CONTACT. Susan B. Hazen, Director, Environmental Assistance Division (7408), Office ofPollution 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 ofEPAto 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 groupsmay present to health or the envirnment. Section 4(e) ofTSCA established the Interagency Testing Committee to recommend chemicals and chemical groups to the Administrator ofEPA for •prioritytesting-consideration. Section 4(e) directs the ITC to revise 1he TSCA section 4(e)P ority TestingListzt least every 6 months. The'most recent revisions to thisList are included in the ITC's Thirty-Third Report. The Report
was received bythe Administrator on November 29. 1993, and is included in this Notice. The Report removestwo cdernicals -andSour chemical groups fom the TSCA section 4(e) Priority TestingList.

These chemical substances and chemical groups were previously added 'to 'theTSCA section 8(d) Health and SafetylBata Reputing Rule (40 CFRpart .71,6)in esponse'to the ITCtesting 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 theTrC's Report. All submissions should bear the identifying docket number (OPPT41040). III. Status ofList

The ITC's Thirty-Third Report ndtes the removal of2 chemicals and 4 chemical groups from the Prjorfty TestingList.The current TSCA -section 4(e) PriorityTestingListcontains 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, ChemicalControl Division,Office of

PollutionPreventionandToxics. Thirty-ThirdReport OfThe 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 PriorityTesting Listby 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 ofproduction 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) ofthe 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 ofa rule for testing under subsection 4(a)... At least every 6 months.... the Committee shall make such revisions in the Listas it determines tobe 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 thePriorityTestingList 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 ofstaff and technical contract support provided by EPA. ITC membership and support personnel are listed at the end ofthis Rellowing receipt ofthe ITC's Report,

the EPA's Office ofPollution Prevention and Toxics may promulgate TSCA -subsection8(a) and 8(d) rules that require manufacturers, processors, and/
or distributors ofchemicals on the

### Federal 

### Ri*tder J VoL $9, No. t7 J1 Wednesday, januay 26, 194 / ,Ntices
Jior1'eti~g1Uist~o 

### sulauIit -productionand exposure data (8a), and health nnlsafetystudies 4a. within.2 menatis ofthe rules' effetwe dates. The 

## ~sabissirmas weindexed -anid maintained by EPA. The ITC reviews the 8(a) and 8(d) information and other available dataon chemicals and chemical groups to determine if revisions to the PriorityTestingList are necessary. Revisions include changing a rrxmeudatontadeeian for actionby"theAdm ngaimstb wifin 12 .months,.modjilyfig~herecommended testing, orremoving the chmical or gautp from he List.

The substituted phenols were recommended fortesting in 1990 and the chemical groups were added to the PriorityTestingListfollowing the Committee's 198,6 sixth.scoring exerdse (Ref. 1). The sixth scoring exercise was asyibemaic, c mpatecized chemrnal selection procedure for identifying chemicalsofcAnera, Lurther efimed

### by chemical substructural features 

### REL 5).
ILAevisosto the T CA Section 41eI PriorityTestingList



### The TCremovesthe ollowiag chemicals and chemical groups from the TSCA SeCtion ,4e) 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'-dicocoacyl) 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 acyloderivs., methyl sulfates (salts).

118-79-,6 ,632-79-1 Bvomlnatedflame retardarits

-
2,4,6-TribromophenoL Tetrabremophthalic ,anhydride. :-.9-90-0

.... Diboinnmpe ltlglv, iL 32068-764
.. Ethylene bisetabmophthalimide). 41291-34-3

... 'Ethyle b 'isr(5,5-d.bromonoitomane-2,3- dicarboximide). 57137-10-7
-_. T.ibrominated polystyrene. r51262-53-1..

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. Alkylphosphates 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 (7chemicals) and 26th Report (16 chemicals).



### Ill.Rationale fortherevisions A. ITC'sActivitiesDuringthisReporting 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 forthe 8(a) and 8(d) rules and the number of8(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 FRCitations Alkylphosphates
..... 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 ITCreevaluated the priority for testing 192 these chemicals and chemical groups at the urging ofEPA in view ofcurrent EPA and Member agency priorities. The 268 ITChas determined that the chemicals and groups listed in its recent Reports
are ofhigher priority than some ofthe 

### 3766

### Federal Reis6er 

### / Vol. 59, No. 17 / Wednesday January 26, 1%94 ,1 Nofices

chemicals recommendd inerlier Reports andis rem-dering p'ioridies to " reflect iis ,determintion.Forthe

chemicals Temoved!rom 'theLst, the ITC will forward to the appropriate EPA program 'officers, or .dther.FederalGovernment organizatons, itsreview,of 8(d) studiesand ethier relevant information tn assist them in risk assessment aM managemen activities, regulatory actions, or for renomination to the TSCA sectiom tfe) PiozityTesting .st.' The ITCwill 'alseinchide these TSCA sdjsmmry repots in the public ducdket supportlngthis IPC Report. In'those cases in which the testing recommendations originally made by theITC'have netbeen met, the ITC encouaes manufacturers, processors, and distributors ofthe removed uhiricaIs oconduot voluntary testing progrtms to provide the recommended test data. B. Specific,Ratio'teks

1. 2,4-Dinitrophenol and3,4- Dimethylphenal.These substitured phenols were mominated to theITCby EPA ih June 1g90 and added tothe PriorityTestingList in November 1990. Chemical fate, health effects and ecological effects testing were recommended -asdescribed in the ITE's 27th Report to the EPA Administrator (56 FRSJ .4,March '6, -19M). The rationale for recommending health effects e9-ingof thesw chemicals was to provide-needed Lest data toincrease.the confidence forEPA's Reference Concentrations T C) and Reference Doses R,U). 'Therationale ior recommending chemical late and ecological effects testing was to provide data 'thatrouldbe usedby EPAto 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 ofrelatively lower priority than others and em es l echemicals from the PriorityTestingList.

2. Imidazoliumandethoxylated 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 anduses Cf imidazoliu m ndethoeylated quatey amxuln compounds ,in fab6c.ooReners, and studieson health effects, chemical fateand ecological effects fftf.2,, 3, and4). Af.erreviewing all these studies, the I'Cconcludes .that thereAis a additional uspiclon of health hazard or hu-man exposure for thesequaternary ammonium compounds and -that potential effeots to aquatic organisms are likely tobe mitigatedby the binding

### of these quateriaary ammonium cmpounds to particulate organic carbon. Forthese reasons,-theITC .believes that the previously recommended testing isnot ofsuffioiently high priority at this time. The imidazolium and ethoxylated quaternary ammonium compounds are, therefore, being removed from the PriorityTestingList.If, in the future, sufficient concers arisexegarding'the health orecological ,effectsof these compounds, individual.members 'ofthis group maybe designated fortesting

3. &omin ,aedFJaare Retardants. Two groups ofraorinated flame -retardants
were added to the PriorityTestingList in Novemnber 1989 and May 1990. Chronic health andecological vffects and physical/chemical properties and persistence testing were recommended for a group ofseven brominated flame ,retardantsin 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 ofTSCA 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. Themost recent, available production data reviewed by the ITC were submitted to EPA in response to the. 1990 TSCA Inventory Update Rulet55 ,FR39586, September 27, 1990) and the 8(a) rules.

Fifteen ofthebrominated flame vetardants arebeing removed from the Listbecause they are notknown tobe 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 {87--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 humithe :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 Listbecause they are polymers with a lower probability ofabsorption into biological tissues thanmopolym aric organic chemicals.

Dibromoneoppntyl glycol (3296-Ais-0) from the .25thReportas wellas brommerahlornethane (74-97-S) and vinyl bromide Xi93-6&-2) fr m the Z6th Report arebeingremoved from theList because their health vffectsare 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 Listat this time to give adequate priority to recently identified testing needs for other chemicals.

The ITChas prepared areport summarizing its review oftheTSCA S(dJ studiesfor transmittal tothe EPA's 

### Existing Chemical Program and other appropriate Federal Government DTgantdtions forpossible risk assesmnemt andmanagement activities, 

### regulatory actions, orforrenomination to the TSCA section 4(e)PriorityTesting List.This TSCA t(d) summary reportis included inthe public docket suppo this 

### ITC Report. .Al phosphates.Twenty alkyl phosphates were added to the Priaoriy TestingLstinMay 1990.Physicalf chemical properties and persistence testing were recommended in the ITC's 26th Report tothe Administrator (55 FR 23050, unae S, 1990.

Thefollowing 13 alkyl phosphates are being removed from the PriorityTesting Listbecause theyure not known tobe domestically produced orimportied in substantialquantities: 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-n

### dodecyl 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 andpersistence data for tributyl phosphate (126-73-8) isbeing 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 PriorityTestingListbecause they are not ofsufficiently high priority at this time.

Dibutyl phosphate, which the ITC is removing from the PriorityTestingList because it is not substantially produced in the U.S., is currently being tested as part ofthe Organisation for Economic Cooperation and Development (OECD) Screening Information Data Set (SIDS) program. The six "substantially

### produced" alkyl phosphates being removed from the Listat this time are on OECD's HighProduction Volume list ofchemicals and may be subject to SIDS testing in the future. Therefore, the ITC has forwarded a report summarizing its information.on the alkylphosphates to the U.S. representative to the OECD SIDS program. The ITChas prepared a report summarizing its review ofthe TSCA 8(d) studies to sendto the EPA's, Existing Chemical Program and other appropriate Federal Government organizations forpossible risk assessment and riskmanagement activities, regulatory actions, or for renomination to the TSCA section 4(e) 

### PriorityTestingList.This TSCA 8(d) summary report is included in the public docket supporting this ITC Report. 

### C. References

(1)Brink, R.H. andWalker, J.D. TSCA Interagency TestingCommittee 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 needson 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 ofTSCA 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 ofthe TotalEnvironment.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 TestingListas 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-Dimethylphenol
................................................................................. Aldehydes
................. ............................................................................ N-phenyl-1-naphthylam ine".
..................................................................... Suffones
................ .......................................................................... Substantially produced chemicals Inneed of subchronic toxicity testing Acetone
................................................................................................... Thiophenol
..............................................................................................
m-Dinitrobenzene
.................................................................................... 

### Cyanoacrylates

.................................. White phosphorus
................................................................................... Alkyl-, bromo-, chloro-, hydroxymethyl diaryl ethers
.............................. Siloxanes
................................................................ .............................. Chloroalkyl phosphates

................................... OSHA chemicals with no dermal toxicity data
....................................... Propylene glycolethers 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 REPRESENTATIVES

### Continued 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 REPRESENTATIVES

### Continued 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 MSt., SW., Washington, D.C. 20460, (202) 260-1825.
[FR Doc. 94-1618 Filed 1-25-94; 8:45 amj

BILLING CODE 6560-.0-F " 

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