Chemicals Regulated by the Clean Air Act
Back to the Table of Contents page for information on many other subjects!
Back to Air Issues page
The Plain English Guide to the CAA
Guidance Manuals and other downloads
CAA full text
These are the chemicals regulated (or dropped from regulation - delisted) by the Clean Air Act.
310 Core Chemicals listed in 1988 remain active today
(excludes four chemicals with definition changes).
| Chemical Name | CAS Number | Clean Air Act | Carcinogen | 33/50 Project (voluntary pollution reduction) |
|---|---|---|---|---|
| 1,1,1-TRICHLOROETHANE | 000071556 | Y | Y | |
| 1,1,2,2-TETRACHLOROETHANE | 000079345 | Y | ||
| 1,1,2-TRICHLOROETHANE | 000079005 | Y | ||
| 1,1-DIMETHYL HYDRAZINE | 000057147 | Y | Y | |
| 1,2,4-TRICHLOROBENZENE | 000120821 | Y | ||
| 1,2,4-TRIMETHYLBENZENE | 000095636 | |||
| 1,2-BUTYLENE OXIDE | 000106887 | Y | ||
| 1,2-DIBROMO-3-CHLOROPROPANE | 000096128 | Y | Y | |
| 1,2-DIBROMOETHANE | 000106934 | Y | Y | |
| 1,2-DICHLOROBENZENE | 000095501 | |||
| 1,2-DICHLOROETHANE | 000107062 | Y | Y | |
| 1,2-DICHLOROETHYLENE | 000540590 | |||
| 1,2-DICHLOROPROPANE | 000078875 | Y | ||
| 1,2-DIPHENYLHYDRAZINE | 000122667 | Y | Y | |
| 1,3-BUTADIENE | 000106990 | Y | Y | |
| 1,3-DICHLOROBENZENE | 000541731 | |||
| 1,3-DICHLOROPROPYLENE | 000542756 | Y | Y | |
| 1,4-DICHLOROBENZENE | 000106467 | Y | Y | |
| 1,4-DIOXANE | 000123911 | Y | Y | |
| 1-AMINO-2-METHYLANTHRAQUINONE | 000082280 | Y | ||
| 2,4,5-TRICHLOROPHENOL | 000095954 | Y | ||
| 2,4,6-TRICHLOROPHENOL | 000088062 | Y | Y | |
| 2,4-D | 000094757 | Y | Y | |
| 2,4-DIAMINOANISOLE | 000615054 | Y | ||
| 2,4-DIAMINOANISOLE SULFATE | 039156417 | Y | ||
| 2,4-DIAMINOTOLUENE | 000095807 | Y | Y | |
| 2,4-DICHLOROPHENOL | 000120832 | |||
| 2,4-DIMETHYLPHENOL | 000105679 | |||
| 2,4-DINITROPHENOL | 000051285 | Y | ||
| 2,4-DINITROTOLUENE | 000121142 | Y | ||
| 2,6-DINITROTOLUENE | 000606202 | |||
| 2,6-XYLIDINE | 000087627 | Y | ||
| 2-ACETYLAMINOFLUORENE | 000053963 | Y | Y | |
| 2-AMINOANTHRAQUINONE | 000117793 | Y | ||
| 2-CHLOROACETOPHENONE | 000532274 | Y | ||
| 2-ETHOXYETHANOL | 000110805 | |||
| 2-METHOXYETHANOL | 000109864 | |||
| 2-NITROPHENOL | 000088755 | |||
| 2-NITROPROPANE | 000079469 | Y | Y | |
| 2-PHENYLPHENOL | 000090437 | |||
| 3,3'-DICHLOROBENZIDINE | 000091941 | Y | Y | |
| 3,3'-DIMETHOXYBENZIDINE | 000119904 | Y | Y | |
| 3,3'-DIMETHYLBENZIDINE | 000119937 | Y | Y | |
| 4,4'-DIAMINODIPHENYL ETHER | 000101804 | Y | ||
| 4,4'-ISOPROPYLIDENEDIPHENOL | 000080057 | |||
| 4,4'-METHYLENEBIS(2-CHLOROANILINE) | 000101144 | Y | Y | |
| 4,4'-METHYLENEBIS(N,N-DIMETHYL)BENZENAMINE | 000101611 | Y | ||
| 4,4'-METHYLENEDIANILINE | 000101779 | Y | Y | |
| 4,4'-THIODIANILINE | 000139651 | Y | ||
| 4,6-DINITRO-O-CRESOL | 000534521 | Y | ||
| 4-AMINOAZOBENZENE | 000060093 | Y | ||
| 4-AMINOBIPHENYL | 000092671 | Y | Y | |
| 4-DIMETHYLAMINOAZOBENZENE | 000060117 | Y | Y | |
| 4-NITROBIPHENYL | 000092933 | Y | Y | |
| 4-NITROPHENOL | 000100027 | Y | ||
| 5-NITRO-O-ANISIDINE | 000099592 | |||
| ACETALDEHYDE | 000075070 | Y | Y | |
| ACETAMIDE | 000060355 | Y | Y | |
| ACETONITRILE | 000075058 | Y | ||
| ACROLEIN | 000107028 | Y | ||
| ACRYLAMIDE | 000079061 | Y | Y | |
| ACRYLIC ACID | 000079107 | Y | ||
| ACRYLONITRILE | 000107131 | Y | Y | |
| ALDRIN | 000309002 | |||
| ALLYL CHLORIDE | 000107051 | Y | ||
| ALPHA-NAPHTHYLAMINE | 000134327 | Y | ||
| ALUMINUM (FUME OR DUST) | 007429905 | |||
| ANILINE | 000062533 | Y | ||
| ANTHRACENE | 000120127 | |||
| ANTIMONY | 007440360 | |||
| ANTIMONY COMPOUNDS | N010 | Y | ||
| ARSENIC | 007440382 | Y | ||
| ARSENIC COMPOUNDS | N020 | Y | ||
| ASBESTOS (FRIABLE) | 001332214 | Y | Y | |
| BARIUM | 007440393 | |||
| BARIUM COMPOUNDS | N040 | |||
| BENZAL CHLORIDE | 000098873 | |||
| BENZAMIDE | 000055210 | |||
| BENZENE | 000071432 | Y | Y | Y |
| BENZIDINE | 000092875 | Y | Y | |
| BENZOIC TRICHLORIDE | 000098077 | Y | Y | |
| BENZOYL CHLORIDE | 000098884 | |||
| BENZOYL PEROXIDE | 000094360 | |||
| BENZYL CHLORIDE | 000100447 | Y | ||
| BERYLLIUM | 007440417 | Y | ||
| BERYLLIUM COMPOUNDS | N050 | Y | ||
| BETA-NAPHTHYLAMINE | 000091598 | Y | ||
| BETA-PROPIOLACTONE | 000057578 | Y | Y | |
| BIPHENYL | 000092524 | |||
| BIS(2-CHLORO-1-METHYLETHYL) ETHER | 000108601 | |||
| BIS(2-CHLOROETHYL) ETHER | 000111444 | Y | ||
| BIS(CHLOROMETHYL) ETHER | 000542881 | Y | Y | |
| BROMOFORM | 000075252 | Y | ||
| BROMOMETHANE | 000074839 | Y | ||
| BUTYL ACRYLATE | 000141322 | |||
| BUTYRALDEHYDE | 000123728 | |||
| C.I. ACID GREEN 3 | 004680788 | |||
| C.I. BASIC GREEN 4 | 000569642 | |||
| C.I. BASIC RED 1 | 000989388 | |||
| C.I. DIRECT BLACK 38 | 001937377 | Y | ||
| C.I. DIRECT BLUE 6 | 002602462 | Y | ||
| C.I. DIRECT BROWN 95 | 016071866 | Y | ||
| C.I. DISPERSE YELLOW 3 | 002832408 | |||
| C.I. FOOD RED 15 | 000081889 | |||
| C.I. FOOD RED 5 | 003761533 | Y | ||
| C.I. SOLVENT ORANGE 7 | 003118976 | |||
| C.I. SOLVENT YELLOW 14 | 000842079 | |||
| C.I. SOLVENT YELLOW 3 | 000097563 | |||
| C.I. SOLVENT YELLOW 34 | 000492808 | Y | ||
| C.I. VAT YELLOW 4 | 000128665 | |||
| CADMIUM | 007440439 | Y | Y | |
| CADMIUM COMPOUNDS | N078 | Y | Y | |
| CALCIUM CYANAMIDE | 000156627 | Y | ||
| CAPTAN | 000133062 | Y | ||
| CARBARYL | 000063252 | Y | ||
| CARBON DISULFIDE | 000075150 | Y | ||
| CARBON TETRACHLORIDE | 000056235 | Y | Y | Y |
| CARBONYL SULFIDE | 000463581 | Y | ||
| CATECHOL | 000120809 | Y | ||
| CERTAIN GLYCOL ETHERS | N230 | Y | ||
| CHLORAMBEN | 000133904 | Y | ||
| CHLORDANE | 000057749 | Y | Y | |
| CHLORINE | 007782505 | |||
| CHLORINE DIOXIDE | 010049044 | |||
| CHLOROACETIC ACID | 000079118 | Y | ||
| CHLOROBENZENE | 000108907 | Y | ||
| CHLOROBENZILATE | 000510156 | Y | ||
| CHLOROETHANE | 000075003 | Y | ||
| CHLOROFORM | 000067663 | Y | Y | Y |
| CHLOROMETHANE | 000074873 | Y | ||
| CHLOROMETHYL METHYL ETHER | 000107302 | Y | Y | |
| CHLOROPHENOLS | N084 | Y | ||
| CHLOROPRENE | 000126998 | Y | ||
| CHLOROTHALONIL | 001897456 | |||
| CHROMIUM | 007440473 | Y | Y | |
| CHROMIUM COMPOUNDS | N090 | Y | Y | |
| COBALT | 007440484 | Y | ||
| COBALT COMPOUNDS | N096 | Y | Y | |
| COPPER | 007440508 | |||
| COPPER COMPOUNDS | N100 | |||
| CRESOL (MIXED ISOMERS) | 001319773 | Y | ||
| CUMENE | 000098828 | Y | ||
| CUMENE HYDROPEROXIDE | 000080159 | |||
| CUPFERRON | 000135206 | Y | ||
| CYANIDE COMPOUNDS | N106 | Y | Y | |
| CYCLOHEXANE | 000110827 | |||
| DECABROMODIPHENYL OXIDE | 001163195 | |||
| DI(2-ETHYLHEXYL) PHTHALATE | 000117817 | Y | Y | |
| DIALLATE | 002303164 | |||
| DIAMINOTOLUENE (MIXED ISOMERS) | 025376458 | Y | ||
| DIAZOMETHANE | 000334883 | Y | ||
| DIBENZOFURAN | 000132649 | Y | ||
| DIBUTYL PHTHALATE | 000084742 | Y | ||
| DICHLOROBENZENE (MIXED ISOMERS) | 025321226 | Y | ||
| DICHLOROBROMOMETHANE | 000075274 | |||
| DICHLOROMETHANE | 000075092 | Y | Y | Y |
| DICHLORVOS | 000062737 | Y | Y | |
| DICOFOL | 000115322 | |||
| DIEPOXYBUTANE | 001464535 | Y | ||
| DIETHANOLAMINE | 000111422 | Y | ||
| DIETHYL SULFATE | 000064675 | Y | ||
| DIMETHYL PHTHALATE | 000131113 | Y | ||
| DIMETHYL SULFATE | 000077781 | Y | Y | |
| DIMETHYLCARBAMYL CHLORIDE | 000079447 | Y | Y | |
| EPICHLOROHYDRIN | 000106898 | Y | Y | |
| ETHYL ACRYLATE | 000140885 | Y | Y | |
| ETHYL CHLOROFORMATE | 000541413 | |||
| ETHYLBENZENE | 000100414 | Y | ||
| ETHYLENE | 000074851 | |||
| ETHYLENE GLYCOL | 000107211 | Y | ||
| ETHYLENE OXIDE | 000075218 | Y | Y | |
| ETHYLENE THIOUREA | 000096457 | Y | Y | |
| ETHYLENEIMINE | 000151564 | Y | Y | |
| FLUOMETURON | 002164172 | |||
| FORMALDEHYDE | 000050000 | Y | Y | |
| FREON 113 | 000076131 | |||
| HEPTACHLOR | 000076448 | Y | Y | |
| HEXACHLORO-1,3-BUTADIENE | 000087683 | Y | ||
| HEXACHLOROBENZENE | 000118741 | Y | Y | |
| HEXACHLOROCYCLOPENTADIENE | 000077474 | Y | ||
| HEXACHLOROETHANE | 000067721 | Y | ||
| HEXACHLORONAPHTHALENE | 001335871 | |||
| HEXAMETHYLPHOSPHORAMIDE | 000680319 | Y | Y | |
| HYDRAZINE | 000302012 | Y | Y | |
| HYDRAZINE SULFATE | 010034932 | Y | ||
| HYDROGEN CYANIDE | 000074908 | Y | ||
| HYDROGEN FLUORIDE | 007664393 | Y | ||
| HYDROQUINONE | 000123319 | Y | ||
| ISOBUTYRALDEHYDE | 000078842 | |||
| ISOPROPYL ALCOHOL (MANUFACTURING, STRONG-ACID PROCESS ONLY, NO SUPPLIE | 000067630 | |||
| LEAD | 007439921 | Y | Y | |
| LEAD COMPOUNDS | N420 | Y | Y | |
| LINDANE | 000058899 | Y | Y | |
| M-CRESOL | 000108394 | Y | ||
| M-XYLENE | 000108383 | Y | Y | |
| MALEIC ANHYDRIDE | 000108316 | Y | ||
| MANEB | 012427382 | |||
| MANGANESE | 007439965 | |||
| MANGANESE COMPOUNDS | N450 | Y | ||
| MERCURY | 007439976 | Y | ||
| MERCURY COMPOUNDS | N458 | Y | Y | |
| METHANOL | 000067561 | Y | ||
| METHOXYCHLOR | 000072435 | |||
| METHYL ACRYLATE | 000096333 | |||
| METHYL ETHYL KETONE | 000078933 | Y | Y | |
| METHYL HYDRAZINE | 000060344 | Y | ||
| METHYL IODIDE | 000074884 | Y | ||
| METHYL ISOBUTYL KETONE | 000108101 | Y | Y | |
| METHYL ISOCYANATE | 000624839 | Y | ||
| METHYL METHACRYLATE | 000080626 | Y | ||
| METHYL TERT-BUTYL ETHER | 001634044 | Y | ||
| METHYLENE BROMIDE | 000074953 | |||
| MICHLER'S KETONE | 000090948 | Y | ||
| MOLYBDENUM TRIOXIDE | 001313275 | |||
| MUSTARD GAS | 000505602 | Y | ||
| N,N-DIMETHYLANILINE | 000121697 | Y | ||
| N-BUTYL ALCOHOL | 000071363 | |||
| N-NITROSO-N-ETHYLUREA | 000759739 | Y | ||
| N-NITROSO-N-METHYLUREA | 000684935 | Y | Y | |
| N-NITROSODI-N-BUTYLAMINE | 000924163 | Y | ||
| N-NITROSODI-N-PROPYLAMINE | 000621647 | Y | ||
| N-NITROSODIETHYLAMINE | 000055185 | Y | ||
| N-NITROSODIMETHYLAMINE | 000062759 | Y | Y | |
| N-NITROSODIPHENYLAMINE | 000086306 | |||
| N-NITROSOMETHYLVINYLAMINE | 004549400 | Y | ||
| N-NITROSOMORPHOLINE | 000059892 | Y | Y | |
| N-NITROSONORNICOTINE | 016543558 | Y | ||
| N-NITROSOPIPERIDINE | 000100754 | Y | ||
| NAPHTHALENE | 000091203 | Y | ||
| NICKEL | 007440020 | Y | Y | |
| NICKEL COMPOUNDS | N495 | Y | Y | |
| NITRIC ACID | 007697372 | |||
| NITRILOTRIACETIC ACID | 000139139 | Y | ||
| NITROBENZENE | 000098953 | Y | ||
| NITROFEN | 001836755 | Y | ||
| NITROGEN MUSTARD | 000051752 | Y | ||
| NITROGLYCERIN | 000055630 | |||
| O-ANISIDINE | 000090040 | Y | Y | |
| O-ANISIDINE HYDROCHLORIDE | 000134292 | Y | ||
| O-CRESOL | 000095487 | Y | ||
| O-TOLUIDINE | 000095534 | Y | Y | |
| O-TOLUIDINE HYDROCHLORIDE | 000636215 | Y | ||
| O-XYLENE | 000095476 | Y | Y | |
| OCTACHLORONAPHTHALENE | 002234131 | |||
| OSMIUM TETROXIDE | 020816120 | |||
| P-ANISIDINE | 000104949 | |||
| P-CRESIDINE | 000120718 | Y | ||
| P-CRESOL | 000106445 | Y | ||
| P-NITROSODIPHENYLAMINE | 000156105 | |||
| P-PHENYLENEDIAMINE | 000106503 | Y | ||
| P-XYLENE | 000106423 | Y | Y | |
| PARATHION | 000056382 | Y | ||
| PENTACHLOROPHENOL | 000087865 | Y | Y | |
| PERACETIC ACID | 000079210 | |||
| PHENOL | 000108952 | Y | ||
| PHOSGENE | 000075445 | Y | ||
| PHOSPHORIC ACID | 007664382 | |||
| PHOSPHORUS (YELLOW OR WHITE) | 007723140 | Y | ||
| PHTHALIC ANHYDRIDE | 000085449 | Y | ||
| PICRIC ACID | 000088891 | |||
| POLYBROMINATED BIPHENYLS | N575 | Y | ||
| POLYCHLORINATED BIPHENYLS | 001336363 | Y | Y | |
| PROPANE SULTONE | 001120714 | Y | Y | |
| PROPIONALDEHYDE | 000123386 | Y | ||
| PROPOXUR | 000114261 | Y | ||
| PROPYLENE | 000115071 | |||
| PROPYLENE OXIDE | 000075569 | Y | Y | |
| PROPYLENEIMINE | 000075558 | Y | Y | |
| PYRIDINE | 000110861 | |||
| QUINOLINE | 000091225 | Y | ||
| QUINONE | 000106514 | Y | ||
| QUINTOZENE | 000082688 | Y | ||
| SACCHARIN (MANUFACTURING, NO SUPPLIER NOTIFICATION) | 000081072 | Y | ||
| SAFROLE | 000094597 | Y | ||
| SEC-BUTYL ALCOHOL | 000078922 | |||
| SELENIUM | 007782492 | |||
| SELENIUM COMPOUNDS | N725 | Y | ||
| SILVER | 007440224 | |||
| SILVER COMPOUNDS | N740 | |||
| STYRENE | 000100425 | Y | Y | |
| STYRENE OXIDE | 000096093 | Y | Y | |
| TERT-BUTYL ALCOHOL | 000075650 | |||
| TETRACHLOROETHYLENE | 000127184 | Y | Y | Y |
| TETRACHLORVINPHOS | 000961115 | |||
| THALLIUM | 007440280 | |||
| THALLIUM COMPOUNDS | N760 | |||
| THIOACETAMIDE | 000062555 | Y | ||
| THIOUREA | 000062566 | Y | ||
| THORIUM DIOXIDE | 001314201 | |||
| TITANIUM TETRACHLORIDE | 007550450 | Y | ||
| TOLUENE | 000108883 | Y | ||
| TOLUENE-2,4-DIISOCYANATE | 000584849 | Y | Y | |
| TOLUENE-2,6-DIISOCYANATE | 000091087 | Y | ||
| TOXAPHENE | 008001352 | Y | Y | |
| TRADE SECRET CHEMICAL | 999999999 | |||
| TRIAZIQUONE | 000068768 | |||
| TRICHLORFON | 000052686 | |||
| TRICHLOROETHYLENE | 000079016 | Y | Y | Y |
| TRIFLURALIN | 001582098 | Y | ||
| TRIS(2,3-DIBROMOPROPYL) PHOSPHATE | 000126727 | Y | ||
| URETHANE | 000051796 | Y | Y | |
| VANADIUM (FUME OR DUST) | 007440622 | |||
| VINYL ACETATE | 000108054 | Y | Y | |
| VINYL BROMIDE | 000593602 | Y | Y | |
| VINYL CHLORIDE | 000075014 | Y | Y | |
| VINYLIDENE CHLORIDE | 000075354 | Y | ||
| XYLENE (MIXED ISOMERS) | 001330207 | Y | Y | |
| ZINC (FUME OR DUST) | 007440666 | |||
| ZINC COMPOUNDS | N982 | |||
| ZINEB | 012122677 |
or
click on