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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 4 to Subpart F of Part 63 - —Organic Hazardous Air Pollutants Subject to Cooling Tower Monitoring Requirements in § 63.104

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  • Table 4 to Subpart F of Part 63—Organic Hazardous Air Pollutants Subject to Cooling Tower Monitoring Requirements in § 63.104

    Cross Reference
    Link to an amendment published at 89 FR 43175, May 16, 2024.
    Chemical name CAS
    Numbera
    Acetaldehyde75070
    Acetonitrile75058
    Acetophenone98862
    Acrolein107028
    Acrylonitrile107131
    Allyl chloride107051
    Aniline62533
    Anisidine (o-)90040
    Benzene71432
    Benzyl chloride100447
    Biphenyl92524
    Bromoform75252
    Butadiene (1,3-)106990
    Carbon disulfide75150
    Carbon tetrachloride56235
    Chloroacetophenone (2-)532274
    Chlorobenzene108907
    2-Chloro-1,3-butadiene (Chloroprene)126998
    Chloroform67663
    Cresol and cresylic acid (o-)95487
    Cresol and cresylic acid (m-)108394
    Cresol and cresylic acid (p-)106445
    Cumene98828
    Dichlorobenzene (p-)106467
    Dichlorobenzidine (3,3″-)91941
    Dichloroethane (1,2-) (Ethylene dichloride) (EDC)107062
    Dichloroethyl ether (Bis(2-chloroethyl)ether)111444
    Dichloropropene (1,3-)542756
    Diethylene glycol diethyl ether112367
    Diethylene glycol dimethyl ether111966
    Diethyl sulfate64675
    Dimethylaniline (N,N-)121697
    Dimethylhydrazine (1,1-)57147
    Dimethyl phthalate131113
    Dimethyl sulfate77781
    Dinitrophenol (2,4-)51285
    Dinitrotoluene (2,4-)121142
    Dioxane (1,4-) (1,4-Diethyleneoxide)123911
    Epichlorohydrin (1-Chloro-2,3-epoxypropane)106898
    Ethyl acrylate140885
    Ethylbenzene100414
    Ethyl chloride (Chloroethane)75003
    Ethylene dibromide (Dibromoethane)106934
    Ethylene glycol dimethyl ether110714
    Ethylene glycol monobutyl ether 111762 Ethylene glycol monobutyl ether acetate112072
    Ethylene glycol monoethyl ether acetate111159
    Ethylene glycol monoethyl ether110805
    Ethylene glycol monomethyl ether109864
    Ethylene glycol monomethyl ether acetate110496
    Ethylene glycol monopropyl ether2807309
    Ethylene oxide75218
    Ethylidene dichloride (1,1-Dichloroethane)75343
    Formaldehyde50000
    Hexachlorobenzene118741
    Hexachlorobutadiene87683
    Hexachloroethane67721
    Hexane110543
    Isophorone78591
    Methanol67561
    Methyl bromide (Bromomethane)74839
    Methyl chloride (Chloromethane)74873
    Methyl hydrazine60344
    Methyl isobutyl ketone (Hexone)108101
    Methyl methacrylate80626
    Methyl tert-butyl ether1634044
    Methylene chloride (Dichloromethane)75092
    Methylenedianiline (4,4″-)101779
    Naphthalene91203
    Nitrobenzene98953
    Nitropropane (2-)79469
    Phenol108952
    Phenylenediamine (p-)106503
    Phosgene75445
    Propionaldehyde123386
    Propylene dichloride (1,2-Dichloropropane)78875
    Propylene oxide75569
    Quinone106514
    Styrene100425
    Tetrachloroethane (1,1,2,2-)79345
    Tetrachloroethylene (Perchloroethylene)127184
    Toluene108883
    Toluidine (o-)95534
    Trichlorobenzene (1,2,4-)120821
    Trichloroethane (1,1,1-) (Methyl chloroform)71556
    Trichloroethane (1,1,2-) (Vinyl trichloride)79005
    Trichloroethylene79016
    Trichlorophenol (2,4,5-)95954
    Triethylamine121448
    Trimethylpentane (2,2,4-)540841
    Vinyl acetate108054
    Vinyl chloride (chloroethylene)75014
    Vinylidene chloride (1,1-Dichloroethylene)75354
    Xylene (m-)108383
    Xylene (o-)95476
    Xylene (p-)106423

    a CAS Number = Chemical Abstract Service number.

    [62 FR 2740, Jan. 17, 1997, as amended at 71 FR 76614, Dec. 21, 2006; 89 FR 43175, May 16, 2024]