Federal Register / Vol. 58, No. 92 / Friday, May 14, 1993 / Rules and Regulations (D)Concrete (excluding cementitious or pozzolanic stabilized hazardous wastes). (E)Masonry and refractory bricks. (F)Metal cans, containers, drums, or tanks.

(G) Metal nuts, bolts, pipes, pumps, valves, appliances, or industrial equipment.

(H Scrap metal as defined in 40 CFR 261.1(c)(6). * .* r *t * [FRDoc. 93-11322 Filed 5-13-93; 8:45 am] MWNG CODE S-O-P 40 CFR Parts 712 and 716 [OPPTS-82040; FRL-4182-11 Preliminary Assessment Information and Health and Safety Data Reporting; Addition ofChemicals AGENCY: Environmental Protection Agency (EPA). ACTION: Final rule. SUMMARY: The Interagency Testing Committee (ITC) in its Thirtieth Report to EPA revised the Toxic Substances Control Act (TSCA) section 4(e) Priority Listby recommending for testing two chemical groups. There are no designated or recommended with intent-to-designate chemicals. The ITC recommendations mustbe given priority consideration by EPA in promulgating test rules.EPA is adding the two categories to twomodel informationgathering rules: The TSCA section 8(a) Preliminary Assessment Information Rule (PAIR) and the TSCA section 8(d) Health and Safety Data Reporting Rule. These model rules willrequire manufacturers, importers, and processors ofthe listedmembers ofthe categories to report production, use, exposure-related, and unpublished health and safety data to EPA. EFFECTIVE DATE: This rule will become effective on June 14, 1993. FOR FURTHER INFORMATION CONTACT: Susan B. Hazen, Director, TSCA Environmental Assistance Division (TS799), Office ofPollution Prevention and Toxics, Environmental Protection Agency, 401 M St., SW., Rm. E-543, Washington, DC 20460, Telephone: (202) 554-1404, TDD: (202) 554-0551. SUPPLEMENTARY INFORMATION: This rule adds two categories of substances to both the PAIR and the section 8(d) ' Health and Safety Data Reporting Rule. Manufacturers, processors, and importers ofthese chemicals will be required toreport unpublished health and safety data and/or end use, exposure, and production volume data to EPA. This rule also corrects the CAS numbers oftwo substances listed under the section 8(d) rule. Under the phenylenediamines category of §716.120(c), the CAS number for 1,2- benzenediamine, 5-chloro-3-nitro- is incorrectly listed as042389-30-0. It should read 42389-30-0. Under the alkyl phosphates category in §716.120(d), the CAS number for phosphoric acid, dibutyl ester is incorrectly listed as 07-06-4. It should read 107-66-4. 1.Background

Section 4(e) ofTSCA established the ITC and authorized it to recommend to EPA chemical substances and mixtures (chemicals)to be given priority consideration in proposing test rules under section 4. For some ofthese chemicals, the ITCmay designate that EPA must respond to its recommendations within 12 months. In this time, EPA must either initiate a rulemaking to testthe chemical or publish in the Federal Register its reasons for'not doing so.

On May 29, 1992, EPA announced the receipt ofthe Thirtieth Report from the ITC. Itwas then published by EPA on July 9, 1992 (57 FR30608). The Thirtieth Report revises the Committee's priority list ofchemicals by recommending two categories to the section 4(e) priority list (for atotal of60 chemical substances). This rule adds two categories of substances to both the PAIR andthe section 8(d) Health and Safety Data Reporting Rule. These two rules are model information gathering rules which assist EPA inresponding to the ITCrecommendations.

EPA issued the PAIR under section 8(a) ofTSCA (15 U.S.C. 2607(a)), and it is codified at 40 CFR part 712. This model section 8(a) rule establishes standard reporting requirements for manufacturers and importers ofthe chemicals listed in the rule at 40 CFR 712.30. These manufacturers and importers arerequired to submit a onetime report on general volume, end use, and exposure-related information using the Preliminary Assessment Information Manufacturer's Report (EPAForm 7710- 35). EPAuses this model section 8(a) rule to gather current information on chemicals ofconcern quickly.

EPA issued the model Health and Safety Data Reporting Ruleunder section 8(d) ofTSCA (15 U.S.C. 2607(d)), and it is codified at 40 CFR part 716. The section 8(d) model rule requires past, current, and prospective manufacturers, importers, and processors oflisted chemicals to submit to EPA copies and lists ofunpublished health and safety studies on the listed chemicals thatthey manufacture, import, orprocess. These studies provide EPA with useful information and have provided significant support for EPA's decision making under TSCA sections 4, 5, 6, 8, and 9. These model rules provide for the automatic addition ofITC priority list chemicals. Whenever EPA announces the receipt ofan ITC report, EPA may, atthe same time without further notice and comment, amend the two model informationgathering rules by adding the recommended chemicals. The amendment adding these chemicals to the PAIR and the Health and Safety Data Reporting Rule becomes effective 30 days after publication. The ITCis currently revising the recommended chemicals identified in the 28th list of ITCchemicals (56 FR 41212, August 19, 1991). The PAIR/8(d) rule adding these chemicals willbe published as soon as EPA receives the amended list of chemicals. II. Chemicals To Be Added

In its Thirtieth Report to EPA, the ITC recommended forpriority consideration two categories ofsubstances; there are no designated or recommended with intent-to-designate chemicals. More specifically, the ITCis recommending for testing two categories ofchemicals. The two categories are siloxanes and chloroalkyl phosphates. For acomplete listing ofthe substances, see the ITC's Thirtieth Report published in the Federal Register at 57 FR 30608 (December 30, 1991). EPA will not add to the section 8(d) Health and Safety DataReporting Rule one substance listed in the ITCreport because the substance is already on the section 8(d) rule and subject to a 10-year reporting period. This substance is: octamethylcyclotetrasiloxane (CAS No. 556-67-2), (49 FR 46741, November 28, 1984). III. Reporting Requirements A. Preliminary Assessment Information Rule

All persons who manufactured or imported the chemical substances named.in this rule during their latest complete corporate fiscal year must submit a Preliminary Assessment Information Manufacturer's Report (EPA Form No. 7710-35) for each manufacturing or importing site at which they manufactured orimported a named substance. A separate form must be completed for each substance and submitted to the Agency no later than August 12, 1993. Persons who have previously and voluntarily submitted a Manufacturer's Report to the ITC orEPA .28511Federal Register /Vol. 58, No. 92 / Friday, May 14, 1993 / Rules and Regulations
may be able to submit acopy ofthe original Report to EPA orto notify EPA by letter oftheir desireto havethis voluntary submission accepted in lieu ofacurrent data submission. See 

### §712.30(a)(3).

Details ofthe reporting requirements, thebasis forexemptions, and afacsimile ofthe reporting form, are provided in 40 CFR part 712. Copies ofthe form are availablefrom the TSCA Environmental AssistanceDivision at the address listed under FOR FURTHER INFORMATION CONTACT. B.HealthandSafety Data Reporting Rule

Listed below are the general reporting requirements ofthe section 8(d) model rule.

1.Personswho, inthe 10years preceding the date asubstance is listed, either have proposed to manufacture, import, or process, or have manufactured, imported, orprocessed, the listed substance must submit to EPA: A copyof eachhealth and safety study which is intheir possession atthe timethe substance Is listed.

2.Persons who, at the time the substance is listed, propose to manufacture, import,or process; or are manufacturing, importing, orprocessing the listed substance must submit to EPA:

a.A copy ofeach health and safety study which is In their possession atthe time the substance is listed.

b. A list ofhealth and safety studies known to them but notin their possessionat the time the substanceis listed.

c.A list ofhealth and safetystudies that are ongoing atthe time the substance is listed and are being conducted by or forthem.

d.A list ofeach health and safety study that isinitiated after the date the substance is listed and is conducted by or forthem.

e.A copy ofeach healthand safety studythat was previously listedas ongoing or subsequently initiated and is now complete-regardless of completion date.

3.Persons who, after the timethe substance is listed, propose to manufacture, import,or process the listed substance must submit to EPA:

a. A copy ofeach health and safety study which is in their possession at the time they propose to manufacture, import, or process the listed substance.

b.A list of health and safety studies known to them butnot in their possession atthe time they propose to manufacture, import, or process the listed substance.

c. A list of health and safety studies that are ongoing atthe time they propose to manufacture, import, or process the listed substance, and are being conducted by or forthem.

d. A list ofeach health and safety studythat is initiated after the time they propose to manufacture, import, or process the listed substance, and is conducted by orfor them.

e. A copy ofeach healthand safety studythat was previously listed as ongoing or subsequently initiated and is now complete-regardless ofthe completion date.

The bulk of reporting is required at the time the substance is listed. Persons described in categories I and 2 do all or most oftheir health and safety data reporting atthe start ofthe reporting period. The remaining reporting requirements, specificallycategories 

### 2(d), 2(e), and 3, continue prospectively.

Detailed guidance for reporting unpublished health and safety data Is provided in the Federal Register of September 15, 1986 (51 FR 32720). Also found there are the reporting exemptions. C.Submissionof PAIRReportsand Section 8(d) Studies

PAIR reports and section 8(d) health and safety studies must be sent to: TSCA Document Processing Center (TS790), Office of Pollution Prevention and Toxics, Environmental Protection Agency, 401 M St., SW., Washington, DC 20460, ATTN: (insert either PAIR or 8(d) Reporting). D. RemovalofChemicalSubstances from theRules Any person who believesthat section 8(a) or 8(d) reporting required by this rule is unwarranted, should promptly submit to EPA in detail the reasons for that belief. EPA, in its discretion, may remove the substance from this rule for good cause (40 CFR 712.30 and 716.105). When withdrawing a substance from the rule, EPA willissue aruleamendment for publication in the Federal Register. IV. Release ofAggregate Data

EPA willfollow procedures forthe release of aggregate statistics as prescribed in the Federal Register notice ofJune 13, 1983 (48 FR 27041). Included inthe noticeare procedures for requesting exemptions from the release of aggregate data. Exemption requests concerningthe release of aggregate data on any chemical substance must be received byEPA no later than August 12, 1993. V. Economic Analysis A. Preliminary AssessmentInformation Rule

EPA estimates the PAIR reporting cost ofthis rule is $92,014. To calculatethis figure, EPA used information from a variety ofpublished sources as well as information from RM1 reports on similar chemicals to generate alist of13 firms that manufacture and/or import the 60 chemicals at atotal of 14 sites. The published sourcesused include: SRI International's Directory of Chemical Producers, Chemical Economics Handbook, and Specialty Chemicals; other multiclient studies;the U.S. International Trade Commission's Synthetic Organic Chemicals; and company product literature. An unknown number ofthe businesses affected by the addition ofthe chemicals to the Priority List mayqualify as a small business as defined in 40 CFR 712.25(c). However, forthis analysis it is assumed that all firms identified will report. Therefore, EPA expects 13 firms to generate atotal of89 reports (some sites produce more than one ofthe 60 chemicals).

Reporting costs (dollars) (a) 89 reports estimated at $914 per report ................................................................................. (b)14 sites at $762 per site ......................................................................................................... Total cost ......................................................... Mean cost per site: $92,014/14 sites .......................................................................................................... Mean cost perfirm: $92,014/13 firns ........................................................................................................ Reporting burden (hours) (a)Rule familiarization: 18 h/site X,14 sites

. ... ............................................................. (b) Reporting: 16 Wreport X89 reports

......................... . . . .......................... $81,346 $10,668 $92,014

$6,572 $7,078 252 h 424 h 28512Federal Register / Vol. ,58, No. 92 / Friday, May 14, 1993 / Rules and Regulations Tots)burden hours ...................................................................................................................................... 676 h Average burden persite at 1,676 h/13 sites ............................................................................................. 20 h Average burden perfirm at 1,676 h/13 firms .............................................................................................. 129 h EPA costs (dollars): Processing cost . 89 reports at $95/report .................................................................................. $8,455 B. Healthand SafetyDataReportingRule EPA estimates the total reporting costs for establishing section 8(d) reporting requirements for 60 chemicals Will be $94,461. This cost estimate is high because the Agency is uncertain about the likely number of respondents to the rule. Although EPA has used the best available data to make its economic projections, much of the information is based upon the 1986 TSCA Inventory Update and secondary information from industry sources. Therefore, EPA tends to overestimate rather than underestimate reporting burden. The estimated reporting costs are broken down as follows: Initlal corporate review ...................................................................................................................... Site Identification ......................................................................................................................................... File searches at site .................................................................................................................................... Photocopying existing studies ................................................................................................................ Title listing ................................................................................................................................................... Managerial review forCBI .................................................................................................................. Reporting on newly-initlated studies .......................................................................................................... Submissions after initial reporting period .................................................................................................... Total ............................................................... 0....................................................................................... Reporting burden (hours) (a)InWal review: 2 h/firm X36 firms .............................................................................................. (b)Reporting: 24.4 h/firm X48 firms ............................................................................................. Total reporting burden hours $ 4,053 6,079 12,499 9,660

633 56,273 273 4,748 $95,557 72 h 2,263 h 2,341 h

The following documents constitute the record for thisrule (docket control number OPPTS-82040). All ofthese documents are available to the public in the TSCA Public Docket Office from 8 a.m. to 12 noon and I p.m.to 4 p.m., Monday through Friday,excluding legal holidays. The TSCA Public Docket Office Is located at EPA Headquarters, Rm. NE-G004, 401 MSt., SW., Washington, DC.

1.This final rule. 2. The economic analysis for this rule. 3. The Thirtieth Report ofthe ITC. VI.Regulatory Assessment Requirements A. Executive Order12291

Under Executive Order 12291, EPA must judge whether aregulation is "major" and, therefore, subject to the requirement ofa Regulatory Impact Analysis. This rule is notmajor because itwill not result in an effect on the economy of$100 million or more, an increase in costs orprices, orany of the adverse effects described in the Executive Order.

This amendment was not submitted to the Office ofManagement and Budget (OMB) for review, because the automatic listing ofsubstances recommended by the ITCis provided for in 40 CFR712.30(c) and 716.18(b). B.Paperwork ReductionAct The information collection requirements contained in this rule have been approved by OMB under the provisions ofthe Paperwork Reduction Act of1980, 44 U.S.C. 3501 etseq. and have been assigned OMB control numbers 2070-0054 for PAIR reporting and 2070-0004 for TSCA section 8(d) reporting.

Publicreporting burden for this collection ofinformation is.estimated to average 19 hours for PAIRper response and 60.72 hours for section 8(d), including time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection ofinformation.

Send comments regarding the burden estimate or any other aspect ofthis collection ofinformation, including suggestions for reducing thisburden, to Chief,Information Policy Branch, PM223, U.S. Environmental Protection Agency, 401 M St., SW., Washington, DC, 20460; and to the Office of Information and Regulatory Affairs, Office ofManagement and Budget, Washington, DC 20503, marked "Attention: Desk Officer forEPA." List ofSubjects in 40 CFRParts 712 and 716

Chemicals, Environmental protection, Hazardous substances, Health and safety data, Recordkeeping and reporting requirements.

Dated: May 5,1993. Charles M. Auer, Director, ChemicalControl Division,Office of

PollutionPreventionandToxics. Therefore, 40 CFR Chapter Iis amended as follows: PART 712-[AMENDED]

1.In Part 712: a. The authority citation for part 712 continues to read as follows:

Authority: 15 U.S.C. 2607(a). b. Section 712.30 is amended by adding two categories alphabetically in paragraph (x)to read as follows: §712.30 Chemical lists and reporting periods. * * *



### (X) * * * 

### 2851328514 Federal Register / Vol. 58, No. 92 / Friday, May 14, 1993 

### I Rules and Regulations

CAS No. Substance Effective Reportn date date

Chloralkyl phosphates 34621-99-3 ...... 38051-10-4 ...... 53461-82-8 ...... 76649-15-5 ...... Siloxanes

107-46-0 .......... 107-50-6 .......... 107-51-7 .......... 107-52-8
.......... 107-53-9 .......... 141-62-8 .......... 141-63-9 .......... 540-97-6 .......... 541-01-5 .......... 541-02-6 .......... 541-05-9 .......... 546-56-5 .......... 556-67-2 .......... 556-68-3 .......... 556-69-4 .......... 556-70-7 .......... 556-71-8 .......... 999-97-3 .......... 2370-88-9 ........ 2374-14-3 ........ 2471-08-1 ........ 2471--09-2 ........ 2471-10-5 ........ 2471-11-6 ........ 2554-06-6 ........ 2627-95-4
........ 2652-13-3 ........ 7013-67-8 ........ 9004-73-3 ........ 9006--65--9 ....... 9016-00-6 ........ 18766-38-6 ...... 18772-36-6 ...... 18844-04-7 ...... 18919-94-3 ...... 23523-12-8 ...... 23523-14-0 ...... 23732-94-7 ...... 36938-50-8 ...... 36938-52-0 ...... 63148-62-9 ...... 67762-90-7 ...... 67762-94-1 ...... 68037-59-2 ...... 68037-74-1 ...... 68083-14-7 ...... 69430-24-6 ...... not available ..... not available ..... not available ..... not available ..... not available ..... not available ..... not available ..... not available ..... not available ..... 1,2-Ethanedlyltetralds(2-chloro-l-methytethytene) phosphate ..................................................... 2.2-Bis(chloromethy)- 1,3-propanedlytetralds(2-chloroethyl) phosphate ..................................... Oxydl-2,1-ethanedyftetralds(2-chlomethy4) phosphate ................................................................ 2-Chloro-1-methylethybls(2-choropropyl) phosphate.

Hexamethyldislloxane
............................................................................................................. Tetradecamethylcycloheptasiloxane
............................................................................................. Octamethyttslloxane ................................................................................................................... Tetradecam ethylhexasiloxane
................................................................................ ............... Tetracosamethyundecasloxane
.................................................................................................. Decam ethyttetrasiloxane
....................................................................................................... Dodecamethylpentaslloxane
......................................................................................................... Dodecamethylcyclohexasloxane
.................................................................................................. Hexadecam ethylheptasloxane
..................................................................................................... Decamethylcyclopentasloxane .................................................................................................... Hexamethylcyclotdslloxane

......................................... Octaphenylcyclotetraslloxane ...................................................................................................... Octamethylcyclotetraslloxane
....................................................................................................... Hexadecam ethylcyclooctasloxane
............................................................................................... Octadocamethyloctaslloxane
........................................................................................................ Docosam ethyldecasloxane
.......................................................................................................... Octadecamethylcyclononasiloxane ................................................................................... . Hexam ethyldisllazane
................................................................................................................... Tetramethylcyclotetrasiloxane
...................................................................................................... Trlfluoropropylm ethylcyclotrlslloxane
............................................................................................ Hexacosamethyk lodecasloxane .................................................................................................. OctacosanethytidecasIfoxane
.................................................................................................. Tdacontam ethyttetradecaslloxane
................................................................................................ Dotriacontamethylpentadecasloxane ........................................................................................... Methyllnylcyclosiloxane ........................................................................................................ Tetram ethytdivlnyidisiloxane ............ * ........................................................................................... Elcosamthylnonasloxane

............ ................................ . . . . . . ................. Non-end-blocked slioxanes
.......................................................................................................... Methylpolysiloxane ................................................................................................................. Dimethicone
.................................................................................................................................. Polydimethylslloxane .................................................................................................................... Docosam ethylcycloundecasiloxane
.............................................................................................. Elcosamethylcyclodecaslioxane ................................................................................................... Hexatrlacontamethylheptadecaslloxane

....................................................................................... Tetracosamethylcydododecasloxane .......................................................................................... Hexatrlacontametiiylcyclooctdecasloxane
........................ H dacontamethyyc octadecas loxane. ................................................................................... Trtacontamethytcyctopentadecaslloxane................. Hexacosamethylcyclot decaslloxane ........................................................................................... Tetratriacontamethyl hexadecaslioxane
....................................................................................... Octatriacontamethyl octadecasloxane
................................. ................................................ Dimethyl silicones and slioxanes
................................................................................................. Dimethyl silicones and slloxane, reaction products with silica ..................................................... Dkmethylmethylvlnylslloxane ......................................................................................................... Dimethylhydropolylslloxane ........................................................................................................ Dlm ethyipolysl oxanes .................................................................................................................. Dlmethyldiphenylslloxane ............................................................................................................. Cyclopolydlmethylslloxane ........................................................................................................... Tetracontarnethylnonadecasloxane.................................... Octacosamethvlcvclotetradecasloxane ........................................................................................ Dotetracontamethylelcosaslloxane Tatracontanmnhvlcvcloekosasloxane Octatriacontamethy y.ononadecas

.. oxane ................ Tctratriacontamethylcyclohptadecasfloxane

............................. DotaconWtamethylcyclohexadecasiloxane

............................. Polymethyloctadecylslloxane ........................................................................................................ Dlmethylmethyltdfluoropropytslloxane

.......................................................................................... 6/14/93 6114193 6/14/93

6/14/93 6/14/93 6114/93 6/14/93 614/93 6114/93 6/14/93 6/14/93 6114/93 6/14/93 6/14/93 6114/93 614/93 6/14/93 6114/93 6/14/93 6/14/93 6/14/93 6/14/93 614/93 6/14/93 6/14/93 614/93 6/14/93 6/14/93 6114/93 6/14/93 6/14/93 6/14/93 6/14/93 6/14/93 6/14/93 6114/93 61 4/93 6/14/93 6/14/93 6/14/93 6/14/93 6114/93 6/14/93 6/14/93 6114/93 6114/93 6/14/93 6/14/93 6114/93 6/14/93 6/14/93 6/14/93 6114/93 6/14/93 6114/93 6/14/93 6/14/93 6/14/93 6/14/93 8/12/93 8/12/93 8/12/93

8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 /12/93 8/12/93 8/12/93 8/12/93 8/12t93 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12193 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12193 8/12/93 8/12/93 /12/93 8/12/93 8/12/93 8/12/93 8/12/93 /12/93 /12/93 8/12/93 8/12/93 8/12/93 /12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 8/12/93 ....................... .......... ......... t ............................ ........... ......

......................................................................................

### Federal Register / Vol. 58, No. 92 / Friday, May 14, 1993 / Rules and Regulations 28515 PART 716--AMENDED] 2. In part 716: 

### a.The authority citation forpart 716 continues to read as follows: Authority: 15 U.S.C. 2607(d). b. Section 716.120 is amended by revising the entry for 1,2-benzenediamine, 5-chloro-3-nitro- under the phenylenediamines category under paragraph (c), revising the entry for phosphoric acid, dibutyl ester under the alkyl phosphates category, and addingtwo categories alphabetically to paragraph (d)to read as follows: 1716.120 Substances and listedmixtures towhich thissubpartapplies.

• • * * *t 

## (c)* * 

### • Category CAS No. Special Exemptions Effective date Sunset date

Phenylenediamines

(Benzenediamines) * a 1,2-Benzenedlamlne, 5-chloro-3-

nitro-

......................................... 42389-30-0 4/29/83 12/29/88

(d) * * * Category CAS No. Special Exemptions Effective date Sunsetdate 

### Aq4 phosphates

Phosphoric acid, dibutyl ester ..... 107-66-4 10/29/90 10/29/00 Chloroalkyl phosphates



### 2.2-Bis(chloromethyl)-1,3-

propanedlyltetrads(2. chloroethy) phosphate ............ 38051-10-4 6/14/93 6/14/03 2-Chloro-1-methylethylbls(2-

chloropropyl) phosphate .......... 76649-15-5 6/14/93 6/14/03 1,2-Ethanedlyl tetrads(2-chloro-1

methylethylene) phosphate ..... 34621-99-3 6/14/93 6/14/03 Oxydl-2,1-ethanedlyttetrakls(2-

chloroethyl) phosphate ............ 53461-82-8 6/14/93 6/14/03

*• • * • • 

### Siloxanes

Cyclopolydimethylsiloxane .......... 69430-24-6 6/14/93 /14/03 Decamethylcyclopentasiloxane ... 541-02-6 614/93 6/14/03 Decamethyltetraslloxane ............. 141-62-8 6/14/93 6/14/03 Dimethcone

................................ 9006-65-9 6/14/93 614/03 Dimethyldiphenylsiloxane ............ 68083-14-7 6/14/93 6/14/03 Dimethylhydropolylsiloxane ......... 68037-59-2 6/14/93 6/14/03 Dimethylmethylvinylsiloxane ....... 67762-94-1 6/14/93 6/14/03 Dlnethylpolyslloxanes ................. 68037-74-1 6/14/93 6/14/03 Dimethylmethyltdfluoro

propylsiloxane .......................... not available 6/14/93 6/14/03 Dimethyl silicones and slloxanas 63148-62-9 6/14/93 6/14/03 Dimethyl silicones and siloxane,-

reaction products with silica .... 67762-90-7 6/14/93 6/14/03 

### Docosamethylcycloun

decasiloxane ............................ 18766-38-6 6/14/93 6/14/03 DocosamethykJecasiloxane ......... 556-70-7 6/14/93 6/14/03 Dodecamethylcyclohexasiloxane 540-97-6 6/14/93 6/14/03 Dodecamethylpentasiloxane ....... 141-63-9 6/14/93 6/14/03 Dotetracontamethylelcosasl-

loxane

..................................... not available 6/14/93 6/14/0328516 Federal Register / Vol. 58, No. 92 / Friday, May 14, 1993 / Rules and Regulations

CategoryDotriacontamethylcyclohexadecasiloxane ............................Dotrlacontamethylpentadecasiloxane
............................ Eicosamethylcyclodecasiloxane .. Eicosamethylnonasiloxane ..........Hexacosamdthylcyclotridecaslioxane ............................ Hexacosamethyldodecaslloxane.Hexadecamethylcyclooctasloxane ........................................ Hexadecamethylheptaslloxane ... Hexamethylcyclotdsiloxane ......... Hexamethyldisilazane
................. Hexamethyldisiloxane
.................Hexatriacontamethylcyclooctadecasiloxane ............................Hexatrdacontamethylheptadecasiloxane ............................ Methylpolyslloxane ...................... Methylvinylcyclosiloxane ............. Non-end-blocked siloxanes .........Octacosamethylcyclotetradecasiloxane ............................ Octacosamethyltrldecasiloxane

...Octadecamethylcyclononasiloxane
.................................... Octadecamethyloctasiloxane ...... Octamethyltrlsiloxane
.................. Octaphenylcyclotetrasiloxane ...... Octatdacontamethylcyclonona-.

decasiloxane ............................Octatriacontamethyloctadecasiloxane ............................ Polymethylsiloxane
..................... Polymethyloctadecylsiloxane ......Tetracontamenthylcycloeicosaslloxane .................Tetracontamethylnonadecasiloxane ....................Tetracosamethylcyclododecasiloxane ............................ TetracosamethylundecasiloxaneTetradecamethylcycloheptasiloxane ........ Tetradecamethylhexasiloxane ..... Tetramethylcyclotetrasiloxane ..... Tetramethydivlnyldlsiloxane.TetratriacontamethylcycloheptadecasiloxaneTetratriacontamethylhexadecasiloxane ............................Triacontamethylcyclopentadecasiloxane
............................ TriacontamethyltetradecasiloxaneTrifluoropropylmethylcyclotrisiloxane ........................ CAS No. Special Exemptions

not available

2471-11-6 18772-36-6 2652-13-3 23732-94-7 2471-08-1

556-68-3 541-01-5 541-05-9 999-97-3 107-46-0 23523-12-8 18844-04-7 9004-73-3 2554-06-5 7013-67-8 not available 2471-09-2

556-71-8 556-69-4 107-51-7 546-56-5 not available 36938-52-0

9016-00-6 not available not available not available 18919-94-3

107-53-9 107-50-6 107-52-8 2370-88-9 2627-95-4 not available

36938-50-8 23523-14-0

2471-10-5 2374-14-3

[FIR Doc. 93-11391; Filed 5-13-93; 8:45 am] BILUNG CODE 65604- Effective date Sunset date

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