WEDNESDAY May 5, 1993 Part VII Environmental Protection Agency Thirty-First Report of the TSCA Interagency Testing Committee to the Administrator; Receipt of Report, Request for Comments, Notice of Opportunity to Initiate Negotiations for TSCA Section 4 Testing Consent Agreements (This reprint was prepared from the electronic file that accompanied the original signed documents transmitted to the Office of the Federal Register. This file was certified to be a true copy of the original.) (This document appeared at 58 FR 26897 - 26901.) Federal Register / Vol. 58, No. 85 / Wednesday, May 5, 1993 / Notices ENVIRONMENTAL PROTECTION AGENCY [OPPTS - 41038; FRL - 4583 - 4] Thirty-First Report of the TSCA Interagency Testing Committee to the Administrator; Receipt of Report, Request for Comments, Notice of Opportunity to Initiate Negotiations for TSCA Section 4 Testing Consent Agreements 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-First Report to the Administrator of EPA on January 28, 1993. This report is included with this notice. As noted in this Report, the ITC revised the Priority Testing List by adding one group of 24 chemicals to the list for priority consideration by the EPA Administrator for promulgation of test rules under section 4(a) of the Act. These chemicals are designated for response within 12 months. Therefore, in response to the ITC's designation, EPA will either initiate rulemaking under section 4(a) of TSCA, enter into a testing consent agreement, or publish a Federal Register notice explaining the reasons for not initiating such rulemaking within 12 months. The ITC is also revising the recommendations for two chemical groups that were recommended in the ITC's Twenty-Eighth Report. The propylene glycol ethers and esters group is revised by the addition of 2 chemicals and the removal of 29. The methyl ethylene glycol ethers and esters group is modified by the removal of eight chemicals. The ITC's reasons for revising these chemical groups are stated in the Thirty-First Report. There are no recommended with intent-to-designate chemicals or chemical groups in the Thirty-First Report. EPA invites interested persons to submit written comments on the Report. In addition, EPA is soliciting interested parties for participation in or monitoring of a consent agreement process for the chemicals that were designated for dermal absorption testing. EPA is also inviting manufacturers and/or processors of chemical substances who wish to participate in testing negotiations for the chemicals designated for dermal absorption testing to develop and submit testing consent agreement proposals to EPA. DATES: Written comments on the Thirty-First ITC Report must be received by June 4, 1993. Written testing proposals must be received by July 6, 1993. Written notice of interest in being designated an ``interested party'' to the development or monitoring of a consent agreement for the chemicals designated for dermal absorption testing must be received by July 6, 1993. Those submitting written testing proposals will be considered ``interested parties'' and do not have to submit separate written notice. EPA will contact all ``interested parties'' and advise them of meeting dates. ADDRESSES: Send six copies of written submissions to: TSCA Docket Receipts (TS - 790), Office of Pollution Prevention and Toxics, Environmental Protection Agency, Rm. ET G - 102, 401 M St., SW., Washington, DC 20460. Submissions should bear the document control number (OPPTS - 41038; FRL - 4583 - 4). The public record supporting this action, including comments, is available for public inspection in Rm. ET G - 102 at the address noted above from 8 a.m. to noon and 1 p.m. to 4 p.m., Monday through Friday, except legal holidays. FOR FURTHER INFORMATION CONTACT: Susan B. Hazen, Director, Environmental Assistance Division (TS - 799), Office of Pollution Prevention and Toxics, Environmental Protection Agency, 401 M Street, SW., Rm. E - 543B, Washington, DC 20460, (202) 554 - 1404, TDD (202) 554 - 0551. SUPPLEMENTARY INFORMATION: Electronic Availability: This document, along with a complete list of Chemical Abstract Service numbers, and chemical names of chemicals and chemicals in groups on the TSCA section 4(e)Priority Testing List, is available as an electronic file on The Federal Bulletin Board at 9 a.m. on the date of publication in the Federal Register. By modem dial 202 - 512 - 1387 or call 202 - 512 - 1530 for disks or paper copies. This file is also available in Postscript, Wordperfect and ASCII. The list of chemical abstract Service numbers, and chemical names of chemicals and chemicals in groups on the TSCA section 4(e) Priority Testing List, is available in Wordperfect and ASCII. I. Background TSCA ( 15 U.S.C. 260l et seq.) authorizes the Administrator of EPA to promulgate regulations under section 4(a) requiring testing of chemical substances and mixtures (``chemicals'') in order to develop data relevant to determining whether such chemicals may present unreasonable risks to health or the environment. Section 4(e) of TSCA established the Interagency Testing Committee (ITC) to recommend chemicals and chemical groups to the Administrator of EPA for priority testing consideration. Section 4(e) directs the ITC to revise the TSCA section 4(e) Priority Testing List at least every 6 months. The most recent revisions to this List are included in the ITC's Thirty-First Report. The Report was received by the Administrator on January 28, 1993, and is included with this notice. The Report adds 1 group of 24 chemicals to the TSCA section 4(e) Priority Testing List and revises the recommendations for 2 chemical groups that were recommended in the ITC's Twenty-Eighth Report. II. Written and Oral Comments on Recommendations EPA invites interested persons to submit detailed comments on the ITC's new recommendations. The Agency is interested in receiving information concerning additional or ongoing health and safety studies on the subject chemicals as well as information relating to the human and environmental exposure to these chemicals. A notice will be published at a later date in the Federal Register adding the substances recommended in the ITC's Thirty-First Report to the TSCA section 8(d) Health and Safety Data Reporting Rule (40 CFR part 716), which requires the reporting of unpublished health and safety studies on the listed chemicals. That notice will also add the chemicals to the TSCA section 8(a) Preliminary Assessment Information Rule (40 CFR part 712). The section 8(a) rule requires the reporting of production volume, use, exposure, and release information on the listed chemicals. III. Status of List The ITC's Thirty-First Report notes the addition of one chemical group to the Priority Testing List and the revision of the recommendations for two chemical groups in the Twenty-Eighth Report. The current TSCA section 4(e) Priority Testing List contains 24 chemicals and 24 chemical groups; 1 chemical group and 11 chemicals are designated for priority testing consideration. IV. Testing Consent Agreements 1. Solicitation of Interested Parties. EPA's procedures for requiring the testing of chemical substances under section 4 of TSCA at 40 CFR 790.22, includes the adoption of enforceable consent agreements and the promulgation of test rules. EPA has on numerous occasions been approached by chemical companies interested in negotiating consent agreements for testing ITC chemicals or chemical groups. As a result of these requests, EPA is now inviting persons interested in participating in or monitoring negotiations on the chemicals designated in the Thirty-First ITC Report to notify EPA in writing. Those who respond to this solicitation by the deadline established in this notice will have the status of ``interested parties'' and will be afforded opportunities to participate in the negotiation process. These ``interested parties'' will not incur any obligations by being designated ``interested parties.'' 2. Solicitation of testing proposals for consent agreement negotiations. EPA is also now soliciting testing proposals for a consent agreement to perform dermal absorption testing on the 24 chemical substances designated in the Thirty-First Report. Following publication of this notice, manufacturers and/or processors have 60 days to develop and submit testing proposals for any of the chemical substances designated in the Thirty-First Report that they wish EPA to consider as candidates for consent agreement negotiations. Federal scientists from a number of the ITC's statutory and liaison organizations including the Consumer Product Safety Commission, Environmental Protection Agency, Food and Drug Administration, National Institute for Occupational Safety and Health, and Occupational Safety and Health Administration, have developed a proposed federally-harmonized test protocol that will provide data needed by several U. S. Government Organizations represented on the ITC. This proposed protocol is entitled ``Protocol for in vitro Percutaneous Absorption Studies'' and is available to the public through the TSCA Docket Receipts and the Environmental Assistance Division listed above. This document should be reviewed before submitting any testing proposals in response to this notice. For additional technical information on this testing protocol contact Dr. John D. Walker, Executive Director, TSCA Interagency Testing Committee, (202) 260 - 1820. All testing proposals submitted should describe the testing to be performed and explain any deviations from the federally harmonized test protocol that are necessary to assure the development of reliable percutaneous absorption data. EPA will review the submissions and select the most promising submissions as candidates for negotiation. Submissions that fully address the ITC's concerns will have a higher chance of success than those that do not fully address all data needs. 3. Negotiation of testing program and development of a testing consent agreement. EPA will follow the negotiation procedures under 40 CFR 790.22, and to the extent feasible, the timetable outlined in 40 CFR part 790, Appendix A to subpart B. In the case of the 24 substances designated for priority testing consideration in the Thirty-First ITC Report, EPA believes that obtaining testing through the development of consent agreements would be most feasible if interested manufacturers organized a testing consortium. Because of the straightforward and relatively inexpensive nature of the recommended tests for each of the substances (i.e., dermal absorption tests), and the costs to EPA and industry that would be incurred should many consent agreements be pursued, EPA believes that negotiating with an organized group of manufacturers may be the most efficient means to obtain the needed testing. For additional information about process or negotiations contact Frank Kover, Chief, Chemical Testing and Information Branch, (202) 260 - 8130. Authority: 15 U.S.C. 2603. Dated: April 23, 1993. Charles M. Auer, Director, Chemical Control Division, Office of Pollution Prevention and Toxics. Thirty-first Report of the TSCA Interagency Testing Committee to the Administrator, Environmental Protection Agency Summary. The Interagency Testing Committee (ITC) was created under Section 4(e) of the Toxic Substances Control Act (TSCA) as an independent advisory committee to the Administrator of the U.S. Environmental Protection Agency (EPA) on setting priorities for the testing of chemicals. The Committee maintains the TSCA section 4(e) Priority Testing List and transmits revisions of the List as a Report to the EPA Administrator at least every 6 months for action and publication in the Federal Register. This Report presents the ITC's revisions to the Priority Testing List resulting from its deliberations during the reporting period May through November 1992. This revision designates a group of 24 chemicals of regulatory interest to the Occupational Safety and Health Administration (OSHA) for dermal absorption testing. Also, two groups of chemicals previously recommended are revised. The propylene glycol ethers and esters group is revised by adding 2 chemicals and removing 29. The methyl ethylene glycol ethers and esters group is modified by removing eight chemicals. Table 1.--Revisions to the TSCA Section 4(e) Priority Testing List 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Group Action Date Concern 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 OSHA Chemicals with no Designated............ 1/93 Dermal absorption dermal absorption testing data (listed in Table 2). Propylene glycol Recommended........... 1/93 Information solicited ethers and esters (revised). Methyl ethylene glycol Recommended........... 1/93 Information solicited ethers and esters (revised). 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Chapter 1--Introduction 1.1 Background. Since its creation in 1976 under Section 4(e) of the Toxic Substances Control Act (Public Law 94 - 469, 90 Stat. 2003 et seq., 15 U.S.C. 2601 et seq.), the TSCA Interagency Testing Committee (ITC) has sent 30 semi-annual Reports to the Administrator of the U.S. Environmental Protection Agency (EPA) to advise on setting priorities for the testing of chemicals. These Reports have been published in the Federal Register and are also available from the Committee. In this, its Thirty-First Report, the Committee revises its Priority Testing List with the addition of one group and the revision of two groups already on the List. A short version of the Priority Testing List appears at the end of this Report. The complete Priority Testing List with all individual chemicals in each group is available upon request from the Committee (address and phone number given below) or, electronically available on The Federal Bulletin Board (see preamble for the phone number). The Committee meets monthly and produces its Reports with the help of staff and technical contract support provided by EPA. Committee membership and support personnel are listed at the end of this Report. Upon receipt of the ITC's Reports, the EPA's Office of Pollution Prevention and Toxics issues information gathering rules under Sections 8(a) and 8(d) of TSCA. These rules require that manufacturers and producers submit (1) production and exposure data and (2) health and safety studies, respectively, within 2 months of the rule's effective date. These submissions are indexed and stored in data bases by EPA and are then available for review by the ITC and others. 1.2 ITC's activities during this reporting period. For the period May 28, 1992 to November 5, 1992, the ITC had six meetings. Chemical groups previously recommended after nomination by the National Institute of Occupational Safety and Health (NIOSH) were reviewed. The individual chemicals comprising these groups are here modified. The ITC also accepted the request of the Occupational Safety and Health Administration (OSHA) to determine testing needs for industrial chemicals which may cause harm to exposed workers by absorption through the skin. 1.3. Revision of Previously Recommended Groups. In the ITC's Twenty-Eighth Report, groups of propylene glycol ethers and esters and methyl ethylene glycol ethers and esters were added to the TSCA section 4(e) Priority Testing List for reproductive effects and developmental toxicity testing based on concerns raised by NIOSH (56 FR 41212, August 19, 1991). NIOSH is concerned with glycol ethers and their esters that are metabolized in humans to known reproductive toxicants. The original groups of glycol ethers and esters were selected from industrial chemicals to which workers are exposed, and the groups were expanded by adding structurally similar compounds through a substructure search of the ITC's Substructure-based Computerized Chemical Selection Expert System (SuCCSES). During this reporting period, NIOSH commented that not all of these chemicals are of concern because of their possible metabolism to reproductive toxicants. The ITC reconsidered the individual members of the groups. Upon review of available metabolism data and consideration of possible structure/activity relationships, the ITC decided to remove some chemicals from both groups. A chemical was removed if: (1) it is expected to be metabolized to tricarboxylic acid cycle intermediates and therefore of lower concern; (2) it is not expected to be metabolized to reproductive toxicants; (3) there are fewer than 1,000 workers exposed, according to the National Occupational Exposure Survey; or (4) other human exposure (mostly through consumer uses) is not considered likely. The Consumer Product Safety Commission (CPSC) expressed an interest in retaining some of the propylene and methyl ethylene glycol ethers and esters on the Priority Testing List and adding two chemicals in order to obtain information submitted under TSCA Sections 8(a) and 8(d). The ITC has a concern that some of these chemicals are likely to be used in consumer products as replacements for ethylene glycol ethers and has no metabolism data available. As a result, the ITC retains some members of both groups on the List and adds two chemicals. Chapter 2 -- Actions taken by the ITC in this Report 2.1 Designated chemicals. OSHA-nominated chemicals for which no dermal toxicity data are available. I. Rationale for the Designation OSHA has established Permissible Exposure Limits (PELs) to protect workers from industrial chemicals. In general, PELs are based on inhalation of airborne dusts and vapors. In those cases where skin absorption could be harmful, the chemicals with PELs are assigned ``skin designations.'' OSHA requested that the ITC help identify chemicals which lack sufficient data for OSHA to determine the need for skin designations and to use their authority to recommend chemicals for priority testing consideration by EPA to obtain these data. To assign a skin designation, OSHA requires acute dermal studies and sufficient dermal absorption data to determine the total exposure of workers. The ITC identified 24 chemicals for which no dermal toxicity or absorption data could be located and which are potentially testable under TSCA. These chemicals are listed in the following Table 2: Table 2.--OSHA chemicals designated for dermal absorption testing 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 CAS No. Chemical Name 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 60 - 29 - 7........................... Ethyl ether 75 - 65 - 0........................... tert-Butyl alcohol 76 - 22 - 2........................... Camphor 78 - 92 - 2........................... sec-Butyl alcohol 79 - 20 - 9........................... Methyl acetate 97 - 77 - 8........................... Disulfiram 100 - 25 - 4.......................... p-Dinitrobenzene 105 - 46 - 4.......................... sec-Butyl acetate 106 - 42 - 3.......................... p-Xylene 107 - 31 - 3.......................... Methyl formate 107 - 66 - 4.......................... Dibutyl phosphate 108 - 03 - 2.......................... 1-Nitropropane 108 - 87 - 2.......................... Methylcyclohexane 109 - 66 - 0.......................... Pentane 110 - 83 - 8.......................... Cyclohexene 111 - 84 - 2.......................... Nonane 123 - 92 - 2.......................... Isoamyl acetate 142 - 82 - 5.......................... n-Heptane 287 - 92 - 3.......................... Cyclopentane 532 - 27 - 4.......................... a-Chloroacetophenone 540 - 88 - 5.......................... tert-Butyl acetate 628 - 63 - 7.......................... n-Amyl acetate 7631 - 90 - 5......................... Sodium bisulfite 7681 - 57 - 4......................... Sodium metabisulfite 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 II. Recommended Tests The group of chemicals listed in Table 2 above are designated for dermal absorption testing. III. Supporting Information In its January 19, 1989 Air Contaminants Rule (54 FR 2332), OSHA stated that: The purpose of having the skin designation is to prevent the same toxic effects that the chemical causes through inhalation. The inhalation limit is based on keeping exposure below the limit which will create a significant risk of material impairment of health. If skin absorption is possible, an employee might be below the inhalation limit; however, the additional body burden through skin absorption may create the material impairment which the limit attempts to reduce. In September 1991, OSHA presented a list of 658 chemical substances and mixtures (its Z - 1 - A Table in 54 FR 2332 - 2983) to the ITC to assess the availability of dermal absorption data and the need for testing that could be recommended under TSCA. The ITC reviewed the list and determined that 145 polymers, pesticides, complex mixtures, and chlorofluorocarbons (CFCs) are not suitable candidates for consideration because they are not suitable for testing, they are regulated under other Federal authorities, or they are not regulable under TSCA. The remaining chemicals were divided into two groups based on production volume: greater or less than 1 million pounds, based on the 1989 production figures from the EPA Inventory. Chemicals that are vapors at ambient temperature, are highly reactive, have low toxicity, are members of chemical groups, or have dermal LD50 values reported in the Registry of Toxic Effects of Chemical Substances were identified in each of the production groups and are deferred for future ITC review. A group of 16 high and 8 low production chemicals were identified as having no dermal toxicity data and are here designated for dermal absorption testing. The following Figure 1 diagrams the selection process. 2.2 Revisions of Previously Recommended Chemical Groups 2.2.a. Propylene glycol ethers and esters I. Rationale for Recommendation The ITC has reason to believe that propylene glycol ethers and esters are substantially used in a variety of consumer products. There is concern about the potential metabolism in humans of these compounds to reproductive toxicants. Occupational and consumer exposures to these chemicals are unknown to the ITC but are considered to be potentially significant. Therefore, TSCA Section 8(a) and 8(d) information is deemed necessary. Table 3.--Revised Group of Propylene Glycol Ethers and esters on the TSCA Section 4(e) Priority Testing List 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 CAS No. Chemical Name 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 108 - 65 - 6.......................... Propylene glycol monomethyl ether acetate 110 - 98 - 5.......................... Dipropylene glycol 770 - 35 - 4.......................... 1-Phenoxy-2-propanol 20324 - 32 - 7 ....................... 1-(2-Methoxy-1-methylethoxy)-2- 20324 - 33 - 8........................ Tripropylene glycol methyl ether\1\ 28677 - 93 - 2........................ Methoxy-1-propanol 29387 - 86 - 8........................ Propylene glycol monobutyl ether\1\ 29911 - 28 - 2........................ Dipropylene glycol butyl ether 42978 - 66 - 5........................ Tripropylene glycol diacrylate 57018 - 52 - 7........................ Propylene glycol mono-tert-butyl ether 88917 - 22 - 0........................ Dipropylene glycol monomethyl ether acetate 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 \1\ Added in this the Thirty-First Report. All others are retained from the Twenty-Eighth Report. II. Recommendation Nine selected propylene glycol ethers and ethers are retained and two are added to the Priority Testing List to obtain information under TSCA Sections 8(a) and 8(d). III. Supporting Information Based on the recommendations of CPSC, Food and Drug Administration (FDA) and NIOSH and discussion at ITC meetings, the ITC revises the TSCA section 4(e) Priority Testing List to remove 29 of the 38 propylene glycol ethers and esters recommended in the Twenty-Eighth Report and to add 2 chemicals: tripropylene glycol methyl ether and propylene glycol monobutyl ether. CPSC requested that these chemicals be recommended so that TSCA Section 8(a) and 8(d) information can be obtained. CPSC is interested in learning about the types and quantities of propylene glycol ethers and esters used in consumer products, and possible exposures to propylene glycol ethers and esters that may result from consumer use of these products. In the event of substantial exposure, metabolism studies may be requested in the future. FDA is interested in the available data on dipropylene glycol methyl ether as it is used in cosmetics. 2.2.b. Methyl ethylene glycol ethers and esters I. Rationale for Recommendation The ITC has reason to believe that ethylene glycol monomethyl ether acrylate (CAS number 3121 - 61 - 7) and tetraethylene glycol monomethyl ether (CAS number 23783 - 42 - 8) are used in consumer products. These compounds may be metabolized to reproductive toxicants. Consequently, it is recommended that TSCA Section 8(a) and 8(d) information be solicited. If these chemicals are used in consumer products or have substantial worker exposure, metabolism studies may be needed. II. Recommendation Ethylene glycol monomethyl ether acrylate and tetraethylene glycol monomethyl ether remain on the Priority Testing List to obtain TSCA Section 8(a) and 8(d) information. III. Supporting Information In the ITC's Twenty-Eighth Report, 10 methyl ethylene glycol ethers and esters were added to the TSCA section 4(e) Priority Testing List based on concerns of NIOSH about potential reproductive and developmental effects (56 FR 41212, August 19, 1991). The ITC reconsidered these glycol ethers and esters and here removes 8 of them from the Priority Testing List on the recommendation of NIOSH. These 8 chemicals have no known industrial or consumer exposures according to the National Occupational Exposure Survey and publicly-available information on chemicals in consumer products. The ITC determined that ethylene glycol monomethyl ether acrylate and tetraethylene glycol monomethyl ether should remain on the Priority Testing List because they are likely to have consumer exposures of interest to CPSC. The TSCA Section 4(e) Priority Testing List 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Report Date Chemical/Group Action 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 22 May 1988 Ethoxylated quaternary Recommended 22 May 1988 Imidazolium quaternary Recommended ammonium compounds. 23 November 1988 Tetrakis(2- Recommended with intent- chloroethyl)ethylene di- to-designate phosphate. 23 November 1988 Tris(1,3-dichloro-2- Recommended with intent- propyl) phosphate. to-designate 23 November 1988 Tris(1-chloro-2-propyl) Recommended with intent- phosphate. to-designate 23 November 1988 Tris(2-chloro-1-propyl) Recommended with intent- phosphate. to-designate 23 November 1988 Tris(2-chloroethyl)- Recommended with intent- phosphate. to-designate 23 November 1988 Butyraldehyde............ Recommended 25 November 1989 Brominated flame Recommended retardants. 26 May 1990 Isocyanates.............. Recommended with intent- to-designate 26 May 1990 Brominated flame Recommended retardants. 26 May 1990 Alkyl phosphates......... Recommended 27 November 1990 Acetophenone............. Designated 27 November 1990 Phenol................... Designated 27 November 1990 N,N-Dimethylaniline...... Designated 27 November 1990 Ethylacetate............. Designated 27 November 1990 2,6-Dimethylphenol....... Designated 27 November 1990 Aldehydes................ Recommended with intent- to-designate 27 November 1990 2,4-Dinitrophenol........ Recommended 27 November 1990 3,4-Dimethylphenol....... Recommended 27 November 1990 N-phenyl-1-naphthylamine. Recommended 27 November 1990 Sulfones................. Recommended 27 November 1990 Substantially produced Recommended chemicals in need of sub- chronic toxicity testing. 28 May 1991 Acetone.................. Designated 28 May 1991 n-Butanol................ Designated 28 May 1991 Isobutanol............... Designated 28 May 1991 Di-(2-ethylhexyl)adipate. Designated 28 May 1991 Dimethyl terephthalate... Designated 28 May 1991 Thiophenol............... Designated 28 May 1991 m-Dinitrobenzene......... Recommended 28 May 1991 Allyl alcohol............ Recommended 28 May 1991 2,4-Dichlorophenol....... Recommended 28 May 1991 Alkynes.................. Recommended 28 May 1991 Nitroalcohols............ Recommended 28 May 1991 Phosphonium compounds.... Recommended 28 May 1991 Hydrazines............... Recommended 28 May 1991 Oxiranes................. Recommended 28 May 1991 Alkoxysilanes............ Recommended 28 May 1991 Aldehyde hydrates........ Recommended 28 May 1991 Isothiocyanates.......... Recommended 28 May 1991 Cyanoacrylates........... Recommended 29 November 1991 White phosphorus......... Recommended 29 November 1991 Alkyl-, bromo-, chloro-, Recommended hydroxymethyl diaryl ethers. 30 May 1992 Siloxanes................ Recommended 30 May 1992 Chloroalkyl phosphates... Recommended 31 January 1993 OSHA chemicals with no Designated dermal absorption data. 31 January 1993 Propylene glycol ethers Recommended and esters (revised). 31 January 1993 Methyl ethylene glycol Recommended ethers and esters (revised). 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 TSCA Interagency Testing Committee Statutory Organizations and Their Representatives . Council on Environmental Quality...... Charles Herrick, Member Department of Commerce............... Willie E. May, Member Edward White, Alternate Environmental Protection Agency...... James B. Willis, Member John S. Leitzke, Alternate National Cancer Institute............. Thomas P. Cameron, Member Richard Adamson, Alternate National Institute of Environmental Errol Zeiger, Member Health Sciences. James K. Selkirk, Alternate National Institute for Occupational Robert W. Mason, Member Safety and Health. Henryka Nagy, Alternate National Science Foundation........... Carter Kimsey, Member, Chair Jarvis L. Moyers, Alternate Occupational Safety and Health Christine Whittaker, Member, Vice Administration. Chair Surender Ahir, Alternate Liaison Organizations and Their Representatives . Agency for Toxic Substances and Sharunda Buchanan, Member Disease Registry. Consumer Product Safety Commission.... Val Schaeffer, Member Lakshmi C. Mishra, Alternate Department of Agriculture............. Donald Derr, Member Ralph T. Ross, Alternate Department of Defense................. Randall S. Wentsel, Member Department of the Interior............ Cliff Rice, Member (until 9/92) Jim Petty, Member Barnett A. Rattner, Alternate Food and Drug Administration.......... Edwin J. Matthews, Member Raju Kammula, Alternate National Library of Medicine.......... Vera Hudson, Member National Toxicology Program........... Victor A. Fung, Member U.S. International Trade Commission... James Raftery, Member Edward Matusik, Alternate Counsel............................... Mary Ellen Levine, Office of the General Counsel, EPA Technical Support Contractor Syracuse Research Corporation. Committee Staff..................... John D. Walker, Ph.D., M.P.H., Executive Director (202) 260-1820 Norma S.L. Williams, Executive Assistant (202) 260 - 1825. TSCA Interagency Testing Committee U.S. EPA/OPPT (TS - 792) 401 M St., SW., Washington, D.C. 20460. [FR Doc. 93 - 10576 Filed 5 - 4 - 93; 8:45 am] BILLING CODE 6560 - 50 - F