Table 3 to Subpart SSSS of Part 63 - List of Hazardous Air Pollutants That Must Be Counted Toward Total Organic HAP Content if Present at 0.1 Percent or More by Mass  


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  • Table 3 to Subpart SSSS of Part 63 - List of Hazardous Air Pollutants That Must Be Counted Toward Total Organic HAP Content if Present at 0.1 Percent or More by Mass

    Chemical name CAS No.
    1,1,2,2-Tetrachloroethane 79-34-5
    1,1,2-Trichloroethane 79-00-5
    1,1-Dimethylhydrazine 57-14-7
    1,2-Dibromo-3-chloropropane 96-12-8
    1,2-Diphenylhydrazine 122-66-7
    1,3-Butadiene 106-99-0
    1,3-Dichloropropene 542-75-6
    1,4-Dioxane 123-91-1
    2,4,6-Trichlorophenol 88-06-2
    2,4/2,6-Dinitrotoluene (mixture) 25321-14-6
    2,4-Dinitrotoluene 121-14-2
    2,4-Toluene diamine 95-80-7
    2-Nitropropane 79-46-9
    3,3′-Dichlorobenzidine 91-94-1
    3,3′-Dimethoxybenzidine 119-90-4
    3,3′-Dimethylbenzidine 119-93-7
    4,4′-Methylene bis(2-chloroaniline) 101-14-4
    Acetaldehyde 75-07-0
    Acrylamide 79-06-1
    Acrylonitrile 107-13-1
    Allyl chloride 107-05-1
    alpha-Hexachlorocyclohexane (a-HCH) 319-84-6
    Aniline 62-53-3
    Benzene 71-43-2
    Benzidine 92-87-5
    Benzotrichloride 98-07-7
    Benzyl chloride 100-44-7
    beta-Hexachlorocyclohexane (b-HCH) 319-85-7
    Bis(2-ethylhexyl)phthalate 117-81-7
    Bis(chloromethyl)ether 542-88-1
    Bromoform 75-25-2
    Captan 133-06-2
    Carbon tetrachloride 56-23-5
    Chlordane 57-74-9
    Chlorobenzilate 510-15-6
    Chloroform 67-66-3
    Chloroprene 126-99-8
    Cresols (mixed) 1319-77-3
    DDE 3547-04-4
    Dichloroethyl ether 111-44-4
    Dichlorvos 62-73-7
    Epichlorohydrin 106-89-8
    Ethyl acrylate 140-88-5
    Ethylene dibromide 106-93-4
    Ethylene dichloride 107-06-2
    Ethylene oxide 75-21-8
    Ethylene thiourea 96-45-7
    Ethylidene dichloride (1,1-Dichloroethane) 75-34-3
    Formaldehyde 50-00-0
    Heptachlor 76-44-8
    Hexachlorobenzene 118-74-1
    Hexachlorobutadiene 87-68-3
    Hexachloroethane 67-72-1
    Hydrazine 302-01-2
    Isophorone 78-59-1
    Lindane (hexachlorocyclohexane, all isomers) 58-89-9
    m-Cresol 108-39-4
    Methylene chloride 75-09-2
    Naphthalene 91-20-3
    Nitrobenzene 98-95-3
    Nitrosodimethylamine 62-75-9
    o-Cresol 95-48-7
    o-Toluidine 95-53-4
    Parathion 56-38-2
    p-Cresol 106-44-5
    p-Dichlorobenzene 106-46-7
    Pentachloronitrobenzene 82-68-8
    Pentachlorophenol 87-86-5
    Propoxur 114-26-1
    Propylene dichloride 78-87-5
    Propylene oxide 75-56-9
    Quinoline 91-22-5
    Tetrachloroethene 127-18-4
    Toxaphene 8001-35-2
    Trichloroethylene 79-01-6
    Trifluralin 1582-09-8
    Vinyl bromide 593-60-2
    Vinyl chloride 75-01-4
    Vinylidene chloride 75-35-4

    [85 FR 10870, Feb. 25, 2020]