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 Code of Federal Regulations (Last Updated: November 8, 2024)
 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 Organic Hazardous Air Pollutants From the Synthetic Organic Chemical Manufacturing Industry

  Table 2 to Subpart F of Part 63 - Organic Hazardous Air Pollutants  

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  • Table 2 to Subpart F of Part 63 - Organic Hazardous Air Pollutants

    Chemical namea b CAS No.c
    Acenaphthene 83329
    Acetaldehyde 75070
    Acetamide 60355
    Acetonitrile 75058
    Acetophenone 98862
    Acrolein 107028
    Acrylamide 79061
    Acrylic acid 79107
    Acrylonitrile 107131
    Alizarin 72480
    Allyl chloride 107051
    Aniline 62533
    Anisidine (o-) 90040
    Anthracene 120127
    Anthraquinone 84651
    Benzene 71432
    Benzotrichloride 98077
    Benzyl chloride 100447
    Biphenyl 92524
    Bis(chloromethyl)ether 542881
    Bromoform 75252
    Bromonaphthalene 27497514
    Butadiene (1,3-) 106990
    Carbon disulfide 75150
    Carbon tetrachloride 56235
    Chloroacetic acid 79118
    Chloroacetophenone (2-) 532274
    Chlorobenzene 108907
    2-Chloro-,1,3-butadiene (Chloroprene) 126998
    Chloroform 67663
    Chloronaphthalene 25586430
    Chrysene 218019
    Cresols and cresylic acids (mixed) 1319773
    Cresol and cresylic acid (o-) 95487
    Cresol and cresylic acid (m-) 108394
    Cresol and cresylic acid (p-) 106445
    Cumene 98828
    Dichlorobenzene (p-) 106467
    Dichlorobenzidine (3,3′-) 91941
    Dichloroethane (1,2-) (Ethylene dichloride) (EDC) 107062
    Dichloroethylether (Bis(2-chloroethyl)ether) 111444
    Dichloropropene (1,3-) 542756
    Diethanolamine (2,2′-Iminodiethanol) 111422
    Dimethylaniline (N,N-) 121697
    Diethyl sulfate 64675
    Dimethylbenzidine (3,3′-) 119937
    Dimethylformamide (N,N-) 68122
    Dimethylhydrazine (1,1-) 58147
    Dimethylphthalate 131113
    Dimethylsulfate 77781
    Dinitrophenol (2,4-) 51285
    Dinitrotoluene (2,4-) 121142
    Dioxane (1,4-) (1,4-Diethyleneoxide) 123911
    1,2-Diphenylhydrazine 122667
    Epichlorohydrin (1-Chloro-2,3-epoxypropane) 106898
    Ethyl acrylate 140885
    Ethylbenzene 100414
    Ethyl chloride (Chloroethane) 75003
    Ethylene dibromide (Dibromoethane) 106934
    Ethylene glycol 107211
    Ethylene oxide 75218
    Ethylidene dichloride (1,1-Dichloroethane) 75343
    Fluoranthene 206440
    Formaldehyde 50000
    Glycol ethersd
    Hexachlorobenzene 118741
    Hexachlorobutadiene 87683
    Hexachloroethane 67721
    Hexane 110543
    Hydroquinone 123319
    Isophorone 78591
    Maleic anhydride 108316
    Methanol 67561
    Methylbromide (Bromomethane) 74839
    Methylchloride (Chloromethane) 74873
    Methyl hydrazine 60344
    Methyl isobutyl ketone (Hexone) 108101
    Methyl isocyanate 624839
    Methyl methacrylate 80626
    Methyl tert-butyl ether 1634044
    Methylene chloride (Dichloromethane) 75092
    Methylene diphenyl diisocyanate (4,4′-) (MDI) 101688
    Methylenedianiline (4,4′-) 101779
    Naphthalene 91203
    Naphthalene sulfonic acid (α) 85472
    Naphthalene sulfonic acid (β) 120183
    Naphthol (α) 90153
    Naphthol (β) 135193
    Naphtholsulfonic acid (1-) 567180
    Naphthylamine sulfonic acid (1,4-) 84866
    Naphthylamine sulfonic acid (2,1-) 81163
    Naphthylamine (1-) 134327
    Naphthylamine (2-) 91598
    Nitronaphthalene (1-) 86577
    Nitrobenzene 98953
    Nitrophenol (p-) 100027
    Nitropropane (2-) 79469
    Phenanthrene 85018
    Phenol 108952
    Phenylenediamine (p-) 106503
    Phosgene 75445
    Phthalic anhydride 85449
    Propiolactone (beta-) 57578
    Propionaldehyde 123386
    Propylene dichloride (1,2-Dichloropropane) 78875
    Propylene oxide 75569
    Pyrene 129000
    Quinone 106514
    Styrene 100425
    Tetrachloroethane (1,1,2,2-) 79345
    Tetrachloroethylene (Perchloroethylene) 127184
    Tetrahydronaphthalene 119642
    Toluene 108883
    Toluene diamine (2,4-) 95807
    Toluene diisocyanate (2,4-) 584849
    Toluidine (o-) 95534
    Trichlorobenzene (1,2,4-) 120821
    Trichloroethane (1,1,1-) (Methyl chloroform) 71556
    Trichloroethane (1,1,2-) (Vinyl trichloride) 79005
    Trichloroethylene 79016
    Trichlorophenol (2,4,5-) 95954
    Triethylamine 121448
    Trimethylpentane (2,2,4-) 540841
    Vinyl acetate 108054
    Vinyl chloride (Chloroethylene) 75014
    Vinylidene chloride (1,1-Dichloroethylene) 75354
    Xylenes (NOS) 1330207
    Xylene (m-) 108383
    Xylene (o-) 95476
    Xylene (p-) 106423

    a 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.

    b Isomer means all structural arrangements for the same number of atoms of each element and does not mean salts, esters, or derivatives.

    c CAS No. = Chemical Abstract Service number.

    d Includes mono- and di- ethers of ethylene glycol, diethylene glycol, and triethylene glycol R-(OCH2 CH2n-OR where:

    n = 1, 2, or 3;

    R = alkyl or aryl groups; and

    R″ = R, H or groups which, when removed, yield glycol ethers with the structure:

    R-(OCH2 CH2n-OH

    Polymers are excluded from the glycol category.

    [62 FR 2735, Jan. 17, 1997, as amended at 71 FR 76614, Dec. 21, 2006]