Table Of Contents - Compound Summaries

This page last reviewed July 21, 2008

Lists of Toxic Air Contaminants

The following substance names are sorted alphabetically and provide a cross reference to the associated Chemical Abstract Service registry numbers (CAS) and Department of Transportation (DOT) numbers.

  Substance Name

CAS #

DOT #,+

       
  Acetaldehyde

75-07-0

1089

  Acetamide

60-35-5

 
  Acetonitrile

75-05-8

1648

  Acetophenone

98-86-2

 
  2-Acetylaminofluorene

53-96-3

 
  Acrolein

107-02-8

1092

  Acrylamide

79-06-1

2074

  Acrylic acid

79-10-7

2218

  Acrylonitrile

107-13-1

1093

  Allyl chloride

107-05-1

1100

  Aluminum and Compounds

7429-90-5

 
    Aluminum phosphide
(please see Aluminum and Compounds)

20859-73-8

 
  ++ Aluminum sulfate
(please see Aluminum and Compounds)

10043-01-3

1760/9078

  4-Aminobiphenyl

92-67-1

 
  Ammonia

7664-41-7

1005/2672/2073

++ Ammonium nitrate

6484-52-2

1942/0222/2426

++ Ammonium sulfate

7783-20-2

2506

  Aniline

62-53-3

1547

  o-Anisidine

90-04-0

2431

  Antimony Compounds

7440-36-0

2871

    Antimony trioxide
(please see Antimony Compounds)

1309-64-4

 
  Arsenic and Compounds

7440-38-2

1558

    Arsenic trioxide
(please see Arsenic and Compounds)

1327-53-3

 
    Arsine
(please see Arsenic and Compounds)

7784-42-1

2188

* Asbestos

1332-21-4

2212/2590

  Aziridine (Ethylene imine)

151-56-4

1185

++ Barium Compounds

7440-39-3

1399/1400/18

* Benzene

71-43-2

1114

  Benzidine

92-87-5

1885

  Benzo[a]pyrene

50-32-8

 
++ Benzotrichloride

98-07-7

2226

++ Benzoyl chloride

98-88-4

1736

  Benzyl chloride

100-44-7

1738

  Beryllium Compounds

7440-41-7

1566/1567

    Beryllium oxide
(please see Beryllium Compounds)

1304-56-9

 
    Beryllium sulfate
(please see Beryllium Compounds)

13510-49-1

 
  Biphenyl

92-52-4

 
  Bis(2-chloroethyl) ether (Dichloroethyl ether)

111-44-4

1916

  Bis(2-ethylhexyl)adipate

103-23-1

 
  Bis(2-ethylhexyl)phthalate (DEHP)

117-81-7

 
  Bis(chloromethyl)ether

542-88-1

2249

  Bromine Compounds (inorganic)

7726-95-6

1744

    Potassium bromate
(please see Bromine Compounds)

7758-01-2

 
  Bromoform

75-25-2

2515

  Bromomethane (Methyl bromide)

74-83-9

1062

* 1,3-Butadiene

106-99-0

1010

  2-Butanone (Methyl ethyl ketone)

78-93-3

1193/1232

  Butyl acrylate

141-32-2

2348

  n-Butyl alcohol

71-36-3

1120

  sec-Butyl alcohol

78-92-2

1120

  tert-Butyl alcohol

75-65-0

1120

  Butyl benzyl phthalate

85-68-7

 
* Cadmium and Cadmium Compounds

7440-43-9

2570

    Cadmium sulfate
(please see Cadmium and Cadmium Compounds)

10124-36-4

 
    Cadmium sulfide
(please see Cadmium and Cadmium Compounds)

1306-23-6

 
  Calcium cyanamide

156-62-7

1403

  Caprolactam

105-60-2

 
  Captan

133-06-2

9188

  Carbaryl

63-25-2

2757

  Carbon black extracts

1333-86-4

 
  Carbon disulfide

75-15-0

1131

* Carbon tetrachloride

56-23-5

1846

++ Carbonyl sulfide

463-58-1

2204

  Catechol

120-80-9

 
  Chloramben

133-90-4

 
  Chlordane

57-74-9

2762

  Chlorinated camphene (Toxaphene)

8001-35-2

2761

* Chlorinated dibenzofurans
(please see Chlorinated dioxins)

N/A

 
* Chlorinated dioxins

N/A

 
  Chlorinated fluorocarbons

76-13-1

 
  Chlorine

7782-50-5

1017

  Chlorine dioxide

10049-04

 
++ Chloroacetic acid

79-11-8

1750/1751

  2-Chloroacetophenone

532-27-4

1697

  Chlorobenzene

108-90-7

1134

  Chlorobenzilate

510-15-6

 
  Chloroethane (Ethyl chloride)

75-00-3

1037

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

106-89-8

2083

* Chloroform

67-66-3

1888

  Chloromethane (Methyl chloride)

74-87-3

1063

  Chloromethyl methyl ether

107-30-2

1239

  Chlorophenols

N/A

 
  ++ m-Chlorophenol
(please see Chlorophenols)

108-43-0

2020/2021

  ++ o-Chlorophenol
(please see Chlorophenols)

95-57-8

2020/2021

  ++ p-Chlorophenol
(please see Chlorophenols)

106-48-9

2020/2021

    2,3,4,6-tetrachlorophenol
(please see Chlorophenols)

58-90-2

 
  Chloroprene

126-99-8

1991

  Chromium and Compounds

7440-47-3

 
*   Chromium VI (Hexavalent chromium)
(please see Chromium and Compounds)

18540-29

 
  Cobalt Compounds

7440-48-4

 
    Cobalt(II) oxide
(please see Cobalt Compounds)

1307-96-6

 
  Coke Oven Emissions

N/A

 
  Copper Compounds

7440-50-8

 
    Copper sulfate
(please see Copper Compounds)

7758-98-7

 
  Creosotes

N/A

 
  ++ Coal tar
(please see Creosotes)

8001-58-9

1136

    Wood
(please see Creosotes)

8021-39-4

 
++ Cresols/Cresylic acid (isomers and mixture)

1319-77-3

2022/2076

    o-Cresol
(please see Cresols/Cresylic acid)

95-48-7

2076

    m-Cresol
(please see Cresols/Cresylic acid)

108-39-4

2076

    p-Cresol
(please see Cresols/Cresylic acid)

106-44-5

2076

  Crystalline silica

7631-86-9

 
    Quartz
(please see Crystalline silica)

14808-60-7

 
    Tridymite
(please see Crystalline silica)

15468-32-3

 
    Cristobalite
(please see Crystalline silica)

14464-46-1

 
  Cumene

98-82-8

1918

++ Cumene hydroperoxide

80-15-9

2116

  Cyanide Compounds

57-12-5

 
    Hydrocyanic acid
(please see Cyanide Compounds)

74-90-8

1051/1613

  Cyclohexane

110-82-7

1145

  2,4-D, salts and esters

94-75-7

2765

  DDE (p,p-Dichlorodiphenyldichloroethylene)

72-55-9

 
    DDT (Dichlorodiphenyltrichloroethane)
(please see DDE)

50-29-3

2761

  Decabromodiphenyl oxide

1163-19-5

 
  Di(2-ethylhexyl)phthalate (DEHP)

117-81-7

 
  Dialkylnitrosamines

N/A

 
    N-Nitroso-n-methylurea

684-93-5

 
    N-Nitrosodimethylamine

62-75-9

 
    N-Nitrosomorpholine

59-89-2

 
    N-Nitrosodiethylamine
(please see Dialkylnitrosamines)

55-18-5

 
  Diaminotoluene (mixed isomers)

N/A

 
    2,4-Toluene diamine

95-80-7

1709

    2,5-Diaminotoluene
(please see Diaminotoluene - mixed isomers)

95-70-5

 
    2,6-Diaminotoluene
(please see Diaminotoluene - mixed isomers)

823-40-5

 
    3,4-Diaminotoluene
(please see Diaminotoluene - mixed isomers)

496-72-0

 
  Diazomethane

334-88-3

 
  Dibenzofuran

132-64-9

 
  1,2-Dibromo-3-chloropropane (DBCP)

96-12-8

2872

* 1,2-Dibromoethane (Ethylene dibromide)

106-93-4

1605

  Dibutylphthalate

84-74-2

 
  1,4-Dichlorobenzene (p-Dicholorobenzene)

106-46-7

1592

  3,3'-Dichlorobenzidene

91-94-1

 
  1,1-Dichloroethane (Ethylidene dichloride)

75-34-3

2362

* 1,2-Dichloroethane (Ethylene dichloride)

107-06-2

1184

  Dichloroethyl ether (Bis(2-chloroethyl) ether)

111-44-4

1916

  1,1-Dichloroethylene (Vinylidene chloride)

75-35-4

1303

* Dichloromethane (Methylene chloride)

75-09-2

1593

  1,2-Dichloropropane (Propylene dichloride)

78-87-5

1279

  1,3-Dichloropropene (Telone)

542-75-6

2047

  Dichlorvos (DDVP)

62-73-7

2783

++ Dicofol

115-32-2

2761

** Diesel exhaust

N/A

 
  Diethanolamine

111-42-2

 
++ Diethyl sulfate

64-67-5

1594

  3,3'-Dimethoxybenzidine

119-90-4

 
  Dimethyl aminoazobenzene

60-11-7

 
  N,N-Dimethylaniline

121-69-7

2253

  3,3'-Dimethyl benzidine (o-Tolidine)

119-93-7

 
  Dimethyl carbamoyl chloride

79-44-7

2262

  Dimethyl formamide

68-12-2

2265

  1,1-Dimethyl hydrazine

57-14-7

1163

  Dimethyl phthalate

131-11-3

9188

  Dimethyl sulfate

77-78-1

1595

  4,6-Dinitro-o-cresol, and salts

534-52-1

1598

  2,4-Dinitrophenol

51-28-5

 
  2,4-Dinitrotoluene

121-14-2

 
  1,4-Dioxane

123-91-1

1165

  1,2-Diphenylhydrazine

122-66-7

 
  Environmental Tobacco Smoke

N/A

 
  Epichlorohydrin (1-Chloro-2,3-epoxypropane)

106-89-8

2083

  1,2-Epoxybutane

106-88-7

 
  Ethyl acrylate

140-88-5

1917

  Ethyl benzene

100-41-4

1175

  Ethyl carbamate (Urethane)

51-79-6

 
  Ethyl chloride (Chloroethane)

75-00-3

1037

* Ethylene dibromide (1,2-Dibromoethane)

106-93-4

1605

* Ethylene dichloride (1,2-Dichloroethane)

107-06-2

1184

  Ethylene glycol

107-21-1

 
  Ethylene imine (Aziridine)

151-56-4

1185

* Ethylene oxide

75-21-8

1040

  Ethylene thiourea

96-45-7

 
  Ethylidene dichloride (1,1-Dichloroethane)

75-34-3

2362

  Fine Mineral Fibers

N/A

 
* Formaldehyde

50-00-0

 
  Gasoline Vapors

N/A

 
  Glutaraldehyde

111-30-8

 
  Glycol ethers

N/A

 
    Ethylene glycol monoethyl ether
(please see Glycol ethers)

110-80-5

1171

  Heptachlor

76-44-8

2761

++ Hexachlorobenzene

118-74-1

2729

  Hexachlorobutadiene

87-68-3

2279

  Hexachlorocyclohexanes

608-73-1

 
    Lindane

58-89-9

2761

  Hexachlorocyclopentadiene

77-47-4

2646

  Hexachloroethane

67-72-1

9037

  Hexamethylene-1,6-diisocyanate

822-06-0

2281

  Hexamethylphosphoramide

680-31-9

 
  Hexane

110-54-3

1208

* Hexavalent chromium (Chromium VI)
(please see Chromium and Compounds)

18540-29-9

 
  Hexone (Methyl isobutyl ketone)

108-10-1

1245

  Hydrazine

302-01-2

2030/2029

  Hydrochloric acid

7647-01-0

1050/1789

  Hydrogen fluoride (Hydrofluoric acid)

7664-39-3

1052/1790

  Hydrogen sulfide

7783-06-4

1053

  Hydroquinone

123-31-9

2662

* Inorganic arsenic
(please see Arsenic and Compounds)

N/A

 
* Inorganic lead
(please see Lead and Compounds)

N/A

 
  Iodomethane (Methyl iodide)

74-88-4

2644

  Isophorone

78-59-1

1993

  Isopropyl alcohol

67-63-0

1219

  4,4'-Isopropylidenediphenol

80-05-7

 
  Lead and Compounds

7439-92-1

 
*   Inorganic lead
(please see Lead and Compounds)

N/A

 
  Lindane (all isomers)

58-89-9

2761

  Maleic anhydride

108-31-6

2215

  Manganese Compounds

7439-96-5

 
    Mancozeb
(please see Manganese Compounds)

8018-01-7

 
  Mercury Compounds

7439-97-6

2809

  ++ Mercuric chloride
(please see Mercury Compounds)

7487-94-7

1624

    Methyl mercury
(please see Mercury Compounds)

22967-92-6

 
  Methanol

67-56-1

1230

  Methoxychlor

72-43-5

2761

  2-Methyl aziridine (1,2-Propylenimine)

75-55-8

1921

  Methyl bromide (Bromomethane)

74-83-9

1062

++ Methyl tert-butyl ether (MTBE)

1634-04-4

2398

  Methyl chloride (Chloromethane)

74-87-3

1063

  Methyl chloroform (1,1,1-Trichloroethane)

71-55-6

2831

  Methyl ethyl ketone (2-Butanone)

78-93-3

1193/1232

  Methyl hydrazine

60-34-4

1244

  Methyl iodide (Iodomethane)

74-88-4

2644

  Methyl isobutyl ketone (Hexone)

108-10-1

1245

  Methyl isocyanate

624-83-9

2480

  Methyl methacrylate

80-62-6

1247

  4,4'-Methylene bis(2-chloroaniline)

101-14-4

 
* Methylene chloride (Dichloromethane)

75-09-2

1593

  Methylene diphenyl diisocyanate (MDI)

101-68-8

2489

  4,4-Methylenedianiline

101-77-9

 
  Molybdenum trioxide

1313-27-5

 
  Naphthalene

91-20-3

2304/1334

* Nickel and Compounds

7440-02-0

 
    Nickel carbonyl
(please see Nickel and Compounds)

13463-39-3

1259

  Nitric acid

7697-37-2

1760/2031/2032

  Nitrilotriacetic acid

139-13-9

 
  Nitrobenzene

98-95-3

1662

  4-Nitrobiphenyl

92-93-3

 
++ 4-Nitrophenol

100-02-7

1663

  2-Nitropropane

79-46-9

2608

  N-Nitroso-n-methylurea

684-93-5

 
  N-Nitrosodimethylamine

62-75-9

 
  N-Nitrosomorpholine

59-89-2

 
  Parathion

56-38-2

2783/2784

  Pentachloronitrobenzene (Quintozene)

82-68-8

 
  Pentachlorophenol

87-86-5

2020

++ Peracetic acid

79-21-0

2131

* Perchloroethylene (Tetrachloroethylene)

127-18-4

1897

  Phenol

108-95-2

1671/2312/2821

  p-Phenylenediamine

106-50-3

1673

  2-Phenylphenol

90-43-7

 
  Phosgene

75-44-5

1076

  Phosphine

7803-51-2

2199

  Phosphoric acid

7664-38-2

1805

  Phosphorus

7723-14-0

1381

  Phthalic anhydride

85-44-9

2214

++ Polychlorinated Biphenyls (PCBs)

1336-36-3

2315

  Polycyclic Organic Matter (POM)

50-32-8

 
    Acenaphthene
(please see POM)

83-32-9

 
    Acenaphthylene
(please see POM)

208-96-8

 
    Anthracene
(please see POM)

120-12-7

 
    Benzo[a]pyrene
(please see POM)

50-32-8

 
    Benzo[a]anthracene
(please see POM)

56-55-3

 
    Benzo[b]fluoranthene
(please see POM)

205-99-2

 
    Benzo[k]fluoranthene
(please see POM)

207-08-9

 
    Benzo[g,h,i]perylene
(please see POM)

191-24-2

 
    Chrysene
(please see POM)

218-01-9

 
    Dibenz[a,h]anthracene
(please see POM)

53-70-3

 
    Dibenz[a,e]pyrene
(please see POM)

192-65-4

 
    Fluoranthene
(please see POM)

206-44-0

 
    Fluorene
(please see POM)

86-73-7

 
    Indeno[1,2,3-cd]pyrene
(please see POM)

193-39-5

 
    Phenanthrene
(please see POM)

85-01-8

 
    Pyrene
(please see POM)

129-00-0

 
  1,3-Propane sultone

1120-71-4

 
++ Propene

115-07-1

1075/1077

  beta-Propiolactone

57-57-8

 
++ Propionaldehyde

123-38-6

1275

  Propoxur (Baygon)

114-26-1

 
  Propylene dichloride (1,2-Dichloropropane)

78-87-5

1279

  Propylene oxide

75-56-9

1280

  1,2-Propylenimine (2-Methyl aziridine)

75-55-8

1921

++ Quinoline

91-22-5

2656

  Quinone

106-51-4

2587

  Quintozene (Pentachloronitrobenzene)

82-68-8

 
  Radionuclides (including radon)

N/A

 
    Iodine
(please see Radionuclides)

7553-56-2

 
    Radon
(please see Radionuclides)

10043-92-2

 
  Selenium Compounds

7782-49-2

2658

    Selenium monosulfide
(please see Selenium Compounds)

7446-34-6

 
  Silver Compounds

7440-22-4

 
  Sodium hydroxide

1310-73-2

1823/1824

  Styrene

100-42-5

2055

  Styrene oxide

96-09-3

 
  Sulfuric acid

7664-93-9

1830/1831/1832

  Telone (1,3-Dichloropropene)

542-75-6

2047

  Terephthalic acid

100-21-0

 
  2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD)
(please see Chlorinated dioxins)

1746-01-6

 
  1,1,2,2-Tetrachloroethane

79-34-5

1702

* Tetrachloroethylene (Perchloroethylene)

127-18-4

1897

++ Thiourea

62-56-6

2877

++ Titanium tetrachloride

7550-45-0

1838

  o-Tolidine (3,3'-Dimethyl benzidine)

119-93-7

 
  Toluene

108-88-3

1294

  2,4-Toluene diamine (2,4-Diaminotoluene)

95-80-7

1709

  2,4-Toluene diisocyanate

584-84-9

2078

  o-Toluidine

95-53-4

1708

  Toxaphene (Chlorinated camphene)

8001-35-2

2761

  1,2,4-Trichlorobenzene

120-82-1

2321

  1,1,1-Trichloroethane (Methyl chloroform)

71-55-6

2831

  1,1,2-Trichloroethane

79-00-5

2831

* Trichloroethylene

79-01-6

1710

  2,4,5-Trichlorophenol

95-95-4

 
  2,4,6-Trichlorophenol

88-06-2

 
  Triethylamine

121-44-8

1296

  Trifluralin

1582-09-8

 
  1,2,4-Trimethylbenzene

95-63-6

2325

++ 2,2,4-Trimethylpentane

540-84-1

1262

  Urethane (Ethyl carbamate)

51-79-6

 
  Vinyl acetate

108-05-4

1301

  Vinyl bromide

593-60-2

1085

* Vinyl chloride

75-01-4

1086

  Vinylidene chloride (1,1-Dichloroethylene)

75-35-4

1303

++ Xylenes (isomers and mixture)

1330-20-7

1307

    m-Xylene
(please see Xylenes - isomers and mixture)

108-38-3

1307

    o-Xylene
(please see Xylenes - isomers and mixture)

95-47-6

1307

    p-Xylene
(please see Xylenes - isomers and mixture)

106-42-3

1307

++ Zinc Compounds

7440-66-6

1383/1436

    Zinc oxide
(please see Zinc Compounds)

1314-13-2

1516