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Clean Air Solvent Certification Protocol Appendix II Hazardous Air Pollutants

Source: EPA (Retrieved October 2019)

CAS NUMBER

CHEMICAL NAME

CAS NUMBER

CHEMICAL NAME

75070

Acetaldehyde

302012

Hydrazine

60355

Acetamide

7647010

Hydrochloric acid

75058

Acetonitrile

7664393

Hydrogen fluoride (Hydrofluoric acid)

98862

Acetophenone

7783064

Hydrogen sulfide (See Modification)

53963

2-Acetylaminofluorene

123319

Hydroquinone

107028

Acrolein

78591

Isophorone

79061

Acrylamide

58899

Lindane (all isomers)

79107

Acrylic acid

108316

Maleic anhydride

107131

Acrylonitrile

67561

Methanol

107051

Allyl chloride

72435

Methoxychlor

92671

4-Aminobiphenyl

74839

Methyl bromide (Bromomethane)

62533

Aniline

74873

Methyl chloride (Chloromethane)

90040

o-Anisidine

71556

Methyl chloroform (1,1,1-Trichloroethane)

1332214

Asbestos

78933

Methyl ethyl ketone (2-Butanone) (See Modification)

71432

Benzene (including benzene from gasoline)

60344

Methyl hydrazine

92875

Benzidine

74884

Methyl iodide (Iodomethane)

98077

Benzotrichloride

108101

Methyl isobutyl ketone (Hexone)

100447

Benzyl chloride

624839

Methyl isocyanate

92524

Biphenyl

80626

Methyl methacrylate

117817

Bis(2-ethylhexyl)phthalate (DEHP)

1634044

Methyl tert butyl ether

542881

Bis(chloromethyl)ether

101144

4,4-Methylene bis(2-chloroaniline)

75252

Bromoform

75092

Methylene chloride (Dichloromethane)

106990

1,3-Butadiene

101688

Methylene diphenyl diisocyanate (MDI)

156627

Calcium cyanamide

101779

4,4'-Methylenedianiline

105602

Caprolactam (See Modification)

91203

Naphthalene

133062

Captan

98953

Nitrobenzene

63252

Carbaryl

92933

4-Nitrobiphenyl

75150

Carbon disulfide

100027

4-Nitrophenol

56235

Carbon tetrachloride

79469

2-Nitropropane

463581

Carbonyl sulfide

684935

N-Nitroso-N-methylurea

120809

Catechol

62759

N-Nitrosodimethylamine

133904

Chloramben

59892

N-Nitrosomorpholine

57749

Chlordane

56382

Parathion

7782505

Chlorine

82688

Pentachloronitrobenzene (Quintobenzene)

79118

Chloroacetic acid

87865

Pentachlorophenol

532274

2-Chloroacetophenone

108952

Phenol

108907

Chlorobenzene

106503

p-Phenylenediamine

510156

Chlorobenzilate

75445

Phosgene

67663

Chloroform

7803512

Phosphine

107302

Chloromethyl methyl ether

7723140

Phosphorus

126998

Chloroprene

85449

Phthalic anhydride

1319773

Cresols/Cresylic acid (isomers and mixture)

1336363

Polychlorinated biphenyls (Aroclors)

95487

o-Cresol

1120714

1,3-Propane sultone

108394

m-Cresol

57578

beta-Propiolactone

106445

p-Cresol

123386

Propionaldehyde

98828

Cumene

114261

Propoxur (Baygon)

94757

2,4-D, salts and esters

78875

Propylene dichloride (1,2-Dichloropropane)

3547044

DDE

75569

Propylene oxide

334883

Diazomethane

75558

1,2-Propylenimine (2-Methyl aziridine)

132649

Dibenzofurans

91225

Quinoline

96128

1,2-Dibromo-3-chloropropane

106514

Quinone

84742

Dibutylphthalate

100425

Styrene

106467

1,4-Dichlorobenzene(p)

96093

Styrene oxide

91941

3,3-Dichlorobenzidene

1746016

2,3,7,8-Tetrachlorodibenzo-p-dioxin

111444

Dichloroethyl ether (Bis(2-chloroethyl)ether)

79345

1,1,2,2-Tetrachloroethane

542756

1,3-Dichloropropene

127184

Tetrachloroethylene (Perchloroethylene)

62737

Dichlorvos

7550450

Titanium tetrachloride

111422

Diethanolamine

108883

Toluene

121697

N,N-Dimethylaniline

95807

2,4-Toluene diamine

64675

Diethyl sulfate

584849

2,4-Toluene diisocyanate

119904

3,3-Dimethoxybenzidine

95534

o-Toluidine

60117

Dimethyl aminoazobenzene

8001352

Toxaphene (chlorinated camphene)

119937

3,3'-Dimethyl benzidine

120821

1,2,4-Trichlorobenzene

79447

Dimethyl carbamoyl chloride

79005

1,1,2-Trichloroethane

68122

Dimethyl formamide

79016

Trichloroethylene

57147

1,1-Dimethyl hydrazine

95954

2,4,5-Trichlorophenol

131113

Dimethyl phthalate

88062

2,4,6-Trichlorophenol

77781

Dimethyl sulfate

121448

Triethylamine

534521

4,6-Dinitro-o-cresol, and salts

1582098

Trifluralin

51285

2,4-Dinitrophenol

540841

2,2,4-Trimethylpentane

121142

2,4-Dinitrotoluene

108054

Vinyl acetate

123911

1,4-Dioxane (1,4-Diethyleneoxide)

593602

Vinyl bromide

122667

1,2-Diphenylhydrazine

75014

Vinyl chloride

106898

Epichlorohydrin (l-Chloro-2,3-epoxypropane)

75354

Vinylidene chloride (1,1-Dichloroethylene)

106887

1,2-Epoxybutane

1330207

Xylenes (isomers and mixture)

140885

Ethyl acrylate

95476

o-Xylenes

100414

Ethyl benzene

108383

m-Xylenes

51796

Ethyl carbamate (Urethane)

106423

p-Xylenes

75003

Ethyl chloride (Chloroethane)

0

Antimony Compounds

106934

Ethylene dibromide (Dibromoethane)

0

Arsenic Compounds (inorganic including arsine)

107062

Ethylene dichloride (1,2-Dichloroethane)

0

Beryllium Compounds

107211

Ethylene glycol

0

Cadmium Compounds

151564

Ethylene imine (Aziridine)

0

Chromium Compounds

75218

Ethylene oxide

0

Cobalt Compounds

96457

Ethylene thiourea

0

Coke Oven Emissions

75343

Ethylidene dichloride (1,1-Dichloroethane)

0

Cyanide Compounds 1

50000

Formaldehyde

0

Glycol ethers 2 (See Modification)

76448

Heptachlor

0

Lead Compounds

118741

Hexachlorobenzene

0

Manganese Compounds

87683

Hexachlorobutadiene

0

Mercury Compounds

77474

Hexachlorocyclopentadiene

0

Fine mineral fibers 3

67721

Hexachloroethane

0

Nickel Compounds

822060

Hexamethylene-1,6-diisocyanate

0

Polycyclic Organic Matter 4

680319

Hexamethylphosphoramide

0

Radionuclides (including radon) 5

110543

Hexane

0

Selenium Compounds


NOTE: For all listings above which contain the word "compounds" and for glycol ethers, 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, etc.) as part of that chemical's infrastructure.

1 - X'CN where X = H' or any other group where a formal dissociation may occur. For example KCN or Ca(CN)2

2 - Includes mono- and di- ethers of ethylene glycol, diethylene glycol, and triethylene glycol R-(OCH2CH2)n -OR' where
               n = 1, 2, or 3
               R = alkyl or aryl groups
               R' = R, H, or groups which, when removed, yield glycol ethers with the structure: R-(OCH2CH)n-OH. Polymers are excluded from the glycol category. (See Modification)

3 - Includes mineral fiber emissions from facilities manufacturing or processing glass, rock, or slag fibers (or other mineral derived fibers) of average diameter 1 micrometer or less.

4 - Includes organic compounds with more than one benzene ring, and which have a boiling point greater than or equal to 100 ºC.

5 - A type of atom which spontaneously undergoes radioactive decay.

Modifications

Pollutants removed from the list of hazardous air pollutants:

Methyl Ethyl Ketone – removed from the list of hazardous air pollutants in December 2005 - Federal Register - December 19, 2005 (70 FR 75047).

Ethylene glycol monobutyl ether (EGBE) (2-Butoxyethanol) - removed from the list of hazardous air pollutants (glycol ethers category) in November 2004 - Federal Register - November 29, 2004 (69 FR 69320).

Caprolactam – removed from the list of hazardous air pollutants in June 1996 - Federal Register - June 18, 1996 (61 FR 30816).

Hydrogen Sulfide – added to the list inadvertently but removed by Congress with Presidential approval in 1991.

Surfactant alcohol ethoxylates and their derivatives - removed from the list of hazardous air pollutants in August 2000 - Federal Register – August 2, 2000 (65 FR 47342). To implement this action, EPA revised footnote 2 of the list (42 U.S.C. 7412(b)(1)) to read as follows:

2 - Includes mono- and di-ethers of ethylene glycol, diethylene glycol, and triethylene glycol R-(OCH2CH2)n-OR' , where:
               n = 1, 2, or 3;
               R = alkyl C7 or less; or R = phenyl or alkyl substituted phenyl;
               R' = H or alkyl C7 or less; or OR’ consisting of carboxylic acid ester, sulfate, phosphate, nitrate, or sulfonate.

Pollutants under consideration for adding to the list of hazardous air pollutants:

n-Propyl Bromide - On December 28, 2016, EPA issued a draft notice of the agency's rationale for granting petitions to add n-Propyl Bromide (nPB) - also known as 1-bromopropane (1-BP) - to the list of hazardous air pollutants. The agency is seeking comments on its technical review of the petitions. Learn more.

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