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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 DD - National Emission Standards for Hazardous Air Pollutants from Off-Site Waste and Recovery Operations

  Table 1 to Subpart DD of Part 63 - List of Hazardous Air Pollutants (HAP) for Subpart DD  

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  • Table 1 to Subpart DD of Part 63 - List of Hazardous Air Pollutants (HAP) for Subpart DD

    CAS No.a Chemical name fm 305
    75-07-0 Acetaldehyde 1.000
    75-05-8 Acetonitrile 0.989
    98-86-2 Acetophenone 0.314
    107-02-8 Acrolein 1.000
    107-13-1 Acrylonitrile 0.999
    107-05-1 Allyl chloride 1.000
    71-43-2 Benzene (includes benzene in gasoline) 1.000
    98-07-7 Benzotrichloride (isomers and mixture) 0.958
    100-44-7 Benzyl chloride 1.000
    92-52-4 Biphenyl 0.864
    542-88-1 Bis(chloromethyl)etherb 0.999
    75-25-2 Bromoform 0.998
    106-99-0 1,3-Butadiene 1.000
    75-15-0 Carbon disulfide 1.000
    56-23-5 Carbon tetrachloride 1.000
    43-58-1 Carbonyl sulfide 1.000
    133-90-4 Chloramben 0.633
    108-90-7 Chlorobenzene 1.000
    67-66-3 Chloroform 1.000
    107-30-2 Chloromethyl methyl etherb 1.000
    126-99-8 Chloroprene 1.000
    98-82-8 Cumene 1.000
    94-75-7 2,4-D, salts and esters 0.167
    334-88-3 Diazomethanec 0.999
    132-64-9 Dibenzofurans 0.967
    96-12-8 1,2-Dibromo-3-chloropropane 1.000
    106-46-7 1,4-Dichlorobenzene(p) 1.000
    107-06-2 Dichloroethane (Ethylene dichloride) 1.000
    111-44-4 Dichloroethyl ether (Bis(2-chloroethyl ether) 0.757
    542-75-6 1,3-Dichloropropene 1.000
    79-44-7 Dimethyl carbamoyl chloridec 0.150
    64-67-5 Diethyl sulfate 0.0025
    77-78-1 Dimethyl sulfate 0.086
    121-69-7 N,N-Dimethylaniline 0.0008
    51-28-5 2,4-Dinitrophenol 0.0077
    121-14-2 2,4-Dinitrotoluene 0.0848
    123-91-1 1,4-Dioxane (1,4-Diethyleneoxide) 0.869
    106-89-8 Epichlorohydrin (1-Chloro-2,3-epoxypropane) 0.939
    106-88-7 1,2-Epoxybutane 1.000
    140-88-5 Ethyl acrylate 1.000
    100-41-4 Ethyl benzene 1.000
    75-00-3 Ethyl chloride (Chloroethane) 1.000
    106-93-4 Ethylene dibromide (Dibromoethane) 0.999
    107-06-2 Ethylene dichloride (1,2-Dichloroethane) 1.000
    151-56-4 Ethylene imine (Aziridine) 0.867
    75-21-8 Ethylene oxide 1.000
    75-34-3 Ethylidene dichloride (1,1-Dichloroethane) 1.000
    Glycol ethersd that have a Henry's Law constant value equal to or greater than 0.1 Y/X (1.8 × 10−6 atm/gm-mole/m3) at 25°C (e)
    118-74-1 Hexachlorobenzene 0.97
    87-68-3 Hexachlorobutadiene 0.88
    67-72-1 Hexachloroethane 0.499
    110-54-3 Hexane 1.000
    78-59-1 Isophorone 0.506
    58-89-9 Lindane (all isomers) 1.000
    67-56-1 Methanol 0.855
    74-83-9 Methyl bromide (Bromomethane) 1.000
    74-87-3 Methyl chloride (Choromethane) 1.000
    71-55-6 Methyl chloroform (1,1,1-Trichloroethane) 1.000
    78-93-3 Methyl ethyl ketone (2-Butanone) 0.990
    74-88-4 Methyl iodide (Iodomethane) 1.0001
    108-10-1 Methyl isobutyl ketone (Hexone) 0.9796
    624-83-9 Methyl isocyanate 1.000
    80-62-6 Methyl methacrylate 0.916
    1634-04-4 Methyl tert butyl ether 1.000
    75-09-2 Methylene chloride (Dichloromethane) 1.000
    91-20-3 Naphthalene 0.994
    98-95-3 Nitrobenzene 0.394
    79-46-9 2-Nitropropane 0.989
    82-68-8 Pentachloronitrobenzene (Quintobenzene) 0.839
    87-86-5 Pentachlorophenol 0.0898
    75-44-5 Phosgenec 1.000
    123-38-6 Propionaldehyde 0.999
    78-87-5 Propylene dichloride (1,2-Dichloropropane) 1.000
    75-56-9 Propylene oxide 1.000
    75-55-8 1,2-Propylenimine (2-Methyl aziridine) 0.945
    100-42-5 Styrene 1.000
    96-09-3 Styrene oxide 0.830
    79-34-5 1,1,2,2-Tetrachloroethane 0.999
    127-18-4 Tetrachloroethylene (Perchloroethylene) 1.000
    108-88-3 Toluene 1.000
    95-53-4 o-Toluidine 0.152
    120-82-1 1,2,4-Trichlorobenzene 1.000
    71-55-6 1,1,1-Trichloroethane (Methyl chlorform) 1.000
    79-00-5 1,1,2-Trichloroethane (Vinyl trichloride) 1.000
    79-01-6 Trichloroethylene 1.000
    95-95-4 2,4,5-Trichlorophenol 0.108
    88-06-2 2,4,6-Trichlorophenol 0.132
    121-44-8 Triethylamine 1.000
    540-84-1 2,2,4-Trimethylpentane 1.000
    108-05-4 Vinyl acetate 1.000
    593-60-2 Vinyl bromide 1.000
    75-01-4 Vinyl chloride 1.000
    75-35-4 Vinylidene chloride (1,1-Dichloroethylene) 1.000
    1330-20-7 Xylenes (isomers and mixture) 1.000
    95-47-6 o-Xylenes 1.000
    108-38-3 m-Xylenes 1.000
    106-42-3 p-Xylenes 1.000

    Notes:

    fm 305 = Method 305 fraction measure factor.

    a. CAS numbers refer to the Chemical Abstracts Services registry number assigned to specific compounds, isomers, or mixtures of compounds.

    b. Denotes a HAP that hydrolyzes quickly in water, but the hydrolysis products are also HAP chemicals.

    c. Denotes a HAP that may react violently with water, exercise caustic is an expected analyte.

    d. Denotes a HAP that hydrolyzes slowly in water.

    e. The fm 305 factors for some of the more common glycol ethers can be obtained by contacting the Waste and Chemical Processes Group, Office of Air Quality Planning and Standards, Research Triangle Park, NC 27711.

    [64 FR 38981, July 20, 1999]