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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.
- CAS Numbers Table of Contents (HTML - 89K)
- DOT Numbers Table of Contents (HTML - 61K)
| 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 |
||
| # | Number |
| + | Department of Transportation (DOT) identification number indicates that the chemical is regulated by DOT. This information was found in the NIOSH Pocket Guide to Chemical Hazards (June 1994). |
| ++ | Department of Transportation (DOT) identification number found in Dangerous Properties of Industrial Materials, seventh edition,1989, Sax. |
| * | Substances which have already been identified by the Board as toxic air contaminants and which have potency numbers developed by the Office of Environmental Health Hazard Assessment and approved by the Scientific Review Panel. |
| ** | Substances currently under review for identification as toxic air contaminants. |
Toxic
Air Contaminant (TAC) Indentification Program