Code of Federal Regulations Title 40. Protection of Environment 40 CFR Pt. 63, Subpt. DD, Tbl. 1 Table 1 to Subpart DD of Part 63—List of Hazardous Air Pollutants (HAP) for Subpart DD

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)ether^b

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 ether^b

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

Diazomethane^c

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 chloride^c

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 ethers^d that have a Henry's Law constant value equal to or greater than 0.1 Y/X (1.8 x 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

Phosgene^c

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