{"data":{"id":"us/40-cfr-table-2-to-subpart-f-of-part-63","jurisdiction":"us","citation":"40 CFR Table 2 to Subpart F of Part 63","heading":"Table 2 to Subpart F of Part 63—Organic Hazardous Air Pollutants","body":"Chemical name a b CAS No. c\nAcenaphthene 83329\nAcetaldehyde 75070\nAcetamide 60355\nAcetonitrile 75058\nAcetophenone 98862\nAcrolein 107028\nAcrylamide 79061\nAcrylic acid 79107\nAcrylonitrile 107131\nAlizarin 72480\nAllyl chloride 107051\nAniline 62533\nAnisidine (o-) 90040\nAnthracene 120127\nAnthraquinone 84651\nBenzene 71432\nBenzotrichloride 98077\nBenzyl chloride 100447\nBiphenyl 92524\nBis(chloromethyl)ether 542881\nBromoform 75252\nBromonaphthalene 27497514\nButadiene (1,3-) 106990\nCarbon disulfide 75150\nCarbon tetrachloride 56235\nChloroacetic acid 79118\nChloroacetophenone (2-) 532274\nChlorobenzene 108907\n2-Chloro-,1,3-butadiene (Chloroprene) 126998\nChloroform 67663\nChloronaphthalene 25586430\nChrysene 218019\nCresols and cresylic acids (mixed) 1319773\nCresol and cresylic acid (o-) 95487\nCresol and cresylic acid (m-) 108394\nCresol and cresylic acid (p-) 106445\nCumene 98828\nDichlorobenzene (p-) 106467\nDichlorobenzidine (3,3′-) 91941\nDichloroethane (1,2-) (Ethylene dichloride) (EDC) 107062\nDichloroethylether (Bis(2-chloroethyl)ether) 111444\nDichloropropene (1,3-) 542756\nDiethanolamine (2,2′-Iminodiethanol) 111422\nDimethylaniline (N,N-) 121697\nDiethyl sulfate 64675\nDimethylbenzidine (3,3′-) 119937\nDimethylformamide (N,N-) 68122\nDimethylhydrazine (1,1-) 58147\nDimethylphthalate 131113\nDimethylsulfate 77781\nDinitrophenol (2,4-) 51285\nDinitrotoluene (2,4-) 121142\nDioxane (1,4-) (1,4-Diethyleneoxide) 123911\n1,2-Diphenylhydrazine 122667\nEpichlorohydrin (1-Chloro-2,3-epoxypropane) 106898\nEthyl acrylate 140885\nEthylbenzene 100414\nEthyl chloride (Chloroethane) 75003\nEthylene dibromide (Dibromoethane) 106934\nEthylene glycol 107211\nEthylene oxide 75218\nEthylidene dichloride (1,1-Dichloroethane) 75343\nFluoranthene 206440\nFormaldehyde 50000\nGlycol ethers d\nHexachlorobenzene 118741\nHexachlorobutadiene 87683\nHexachloroethane 67721\nHexane 110543\nHydroquinone 123319\nIsophorone 78591\nMaleic anhydride 108316\nMethanol 67561\nMethylbromide (Bromomethane) 74839\nMethylchloride (Chloromethane) 74873\nMethyl hydrazine 60344\nMethyl isobutyl ketone (Hexone) 108101\nMethyl isocyanate 624839\nMethyl methacrylate 80626\nMethyl tert-butyl ether 1634044\nMethylene chloride (Dichloromethane) 75092\nMethylene diphenyl diisocyanate (4,4′-) (MDI) 101688\nMethylenedianiline (4,4′-) 101779\nNaphthalene 91203\nNaphthalene sulfonic acid (α) 85472\nNaphthalene sulfonic acid (β) 120183\nNaphthol (α) 90153\nNaphthol (β) 135193\nNaphtholsulfonic acid (1-) 567180\nNaphthylamine sulfonic acid (1,4-) 84866\nNaphthylamine sulfonic acid (2,1-) 81163\nNaphthylamine (1-) 134327\nNaphthylamine (2-) 91598\nNitronaphthalene (1-) 86577\nNitrobenzene 98953\nNitrophenol (p-) 100027\nNitropropane (2-) 79469\nPhenanthrene 85018\nPhenol 108952\nPhenylenediamine (p-) 106503\nPhosgene 75445\nPhthalic anhydride 85449\nPropiolactone (beta-) 57578\nPropionaldehyde 123386\nPropylene dichloride (1,2-Dichloropropane) 78875\nPropylene oxide 75569\nPyrene 129000\nQuinone 106514\nStyrene 100425\nTetrachloroethane (1,1,2,2-) 79345\nTetrachloroethylene (Perchloroethylene) 127184\nTetrahydronaphthalene 119642\nToluene 108883\nToluene diamine (2,4-) 95807\nToluene diisocyanate (2,4-) 584849\nToluidine (o-) 95534\nTrichlorobenzene (1,2,4-) 120821\nTrichloroethane (1,1,1-) (Methyl chloroform) 71556\nTrichloroethane (1,1,2-) (Vinyl trichloride) 79005\nTrichloroethylene 79016\nTrichlorophenol (2,4,5-) 95954\nTriethylamine 121448\nTrimethylpentane (2,2,4-) 540841\nVinyl acetate 108054\nVinyl chloride (Chloroethylene) 75014\nVinylidene chloride (1,1-Dichloroethylene) 75354\nXylenes (NOS) 1330207\nXylene (m-) 108383\nXylene (o-) 95476\nXylene (p-) 106423\na For all Listings above containing the word “Compounds,” the following applies: Unless otherwise specified, these listings are defined as including any unique chemical substance that contains the named chemical (i.e., antimony, arsenic) as part of that chemical's infrastructure.\nb Isomer means all structural arrangements for the same number of atoms of each element and does not mean salts, esters, or derivatives.\nc CAS No. = Chemical Abstract Service number.\nd Includes mono- and di- ethers of ethylene glycol, diethylene glycol, and triethylene glycol R-(OCH2 CH2n-OR where:\nn = 1, 2, or 3;\nR = alkyl or aryl groups; and\nR″ = R, H or groups which, when removed, yield glycol ethers with the structure:\nR-(OCH2 CH2n-OH\nPolymers are excluded from the glycol category.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 63—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES","Subpart F—National Emission Standards for Hazardous Air Pollutants From the Synthetic Organic Chemical Manufacturing Industry"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"d33971eec848fc0776d5bd17d4eff6f76535f9227082fc5144bfb8e5f232c76c","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-1-to-subpart-f-of-part-63","next":"us/40-cfr-table-3-to-subpart-f-of-part-63"},"notice":"GroundRules: Original legal text. Not legal advice."}