Jump to main content or area navigation.

Contact Us

TRI Explorer

Hazardous Air Pollutants

TRI Hazardous Air Pollutants
Row # Chemical Name CAS Number EPA's IRIS Substance File (Risk Information)
1 1,1,1-trichloroethane 000071556
2 1,1,2,2-tetrachloroethane 000079345
3 1,1,2-trichloroethane 000079005
4 1,1-dimethyl hydrazine 000057147  
5 1,2,4-trichlorobenzene 000120821
6 1,2-butylene oxide 000106887
7 1,2-dibromo-3-chloropropane 000096128
8 1,2-dibromoethane 000106934
9 1,2-dichloroethane 000107062
10 1,2-dichloropropane 000078875
11 1,2-diphenylhydrazine 000122667
12 1,3-butadiene 000106990
13 1,3-dichloropropylene 000542756
14 1,4-dichlorobenzene 000106467
15 1,4-dioxane 000123911
16 2,4,5-trichlorophenol 000095954
17 2,4,6-trichlorophenol 000088062
18 2,4-d 000094757
19 2,4-diaminotoluene 000095807
20 2,4-dinitrophenol 000051285
21 2,4-dinitrotoluene 000121142
22 2-acetylaminofluorene 000053963  
23 2-chloroacetophenone 000532274
24 2-nitropropane 000079469
25 3,3'-dichlorobenzidine 000091941
26 3,3'-dimethoxybenzidine 000119904  
27 3,3'-dimethylbenzidine 000119937
28 4,4'-methylenebis(2-chloroaniline) 000101144  
29 4,4'-methylenedianiline 000101779  
30 4,6-dinitro-o-cresol 000534521  
31 4-aminobiphenyl 000092671  
32 4-dimethylaminoazobenzene 000060117  
33 4-nitrobiphenyl 000092933  
34 4-nitrophenol 000100027
35 Acetaldehyde 000075070
36 Acetamide 000060355  
37 Acetonitrile 000075058
38 Acetophenone 000098862
39 Acrolein 000107028
40 Acrylamide 000079061
41 Acrylic acid 000079107
42 Acrylonitrile 000107131
43 Allyl chloride 000107051
44 Alpha-hexachlorocyclohexane 000319846
45 Aniline 000062533
46 Antimony compounds N010  
47 Arsenic compounds N020  
48 Asbestos (friable) 001332214
49 Benzene 000071432
50 Benzidine 000092875
51 Benzoic trichloride 000098077
52 Benzyl chloride 000100447
53 Beryllium compounds N050  
54 Beta-propiolactone 000057578
55 Biphenyl 000092524
56 Bis(2-chloroethyl) ether 000111444
57 Bis(chloromethyl) ether 000542881
58 Bromoform 000075252
59 Bromomethane 000074839
60 Cadmium compounds N078  
61 Calcium cyanamide 000156627  
62 Captan 000133062
63 Carbaryl 000063252
64 Carbon disulfide 000075150
65 Carbon tetrachloride 000056235
66 Carbonyl sulfide 000463581
67 Catechol 000120809  
68 Certain glycol ethers N230  
69 Chloramben 000133904
70 Chlordane 000057749  
71 Chlorine 007782505
72 Chloroacetic acid 000079118  
73 Chlorobenzene 000108907
74 Chlorobenzilate 000510156
75 Chloroethane 000075003
76 Chloroform 000067663
77 Chloromethane 000074873
78 Chloromethyl methyl ether 000107302
79 Chloroprene 000126998  
80 Chromium compounds(except chromite ore mined in the transvaal region) N090  
81 Cobalt compounds N096  
82 Cresol (mixed isomers) 001319773
83 Cumene 000098828
84 Cyanide compounds N106  
85 Di(2-ethylhexyl) phthalate 000117817
86 Diazomethane 000334883
87 Dibenzofuran 000132649
88 Dibutyl phthalate 000084742
89 Dichloromethane 000075092
90 Dichlorvos 000062737
91 Diethanolamine 000111422  
92 Diethyl sulfate 000064675
93 Dimethyl phthalate 000131113
94 Dimethyl sulfate 000077781
95 Dimethylcarbamyl chloride 000079447  
96 Epichlorohydrin 000106898
97 Ethyl acrylate 000140885  
98 Ethylbenzene 000100414
99 Ethylene glycol 000107211
100 Ethylene oxide 000075218  
101 Ethylene thiourea 000096457
102 Ethyleneimine 000151564
103 Ethylidene dichloride 000075343
104 Formaldehyde 000050000
105 Heptachlor 000076448
106 Hexachloro-1,3-butadiene 000087683
107 Hexachlorobenzene 000118741
108 Hexachlorocyclopentadiene 000077474
109 Hexachloroethane 000067721
110 Hexamethylphosphoramide 000680319  
111 Hydrazine 000302012
112 Hydrochloric acid (1995 and after "acid aerosols" only) 007647010
113 Hydrogen fluoride 007664393  
114 Hydroquinone 000123319
115 Lead compounds N420  
116 M-cresol 000108394
117 M-xylene 000108383  
118 Maleic anhydride 000108316
119 Manganese compounds N450  
120 Mercury compounds N458  
121 Methanol 000067561
122 Methoxychlor 000072435
123 Methyl hydrazine 000060344  
124 Methyl iodide 000074884
125 Methyl isobutyl ketone 000108101
126 Methyl isocyanate 000624839
127 Methyl methacrylate 000080626
128 Methyl tert-butyl ether 001634044
129 Methylenebis(phenylisocyanate) 000101688
130 N,n-dimethylaniline 000121697
131 N,n-dimethylformamide 000068122
132 N-hexane 000110543
133 N-nitroso-n-methylurea 000684935  
134 N-nitrosodimethylamine 000062759
135 N-nitrosomorpholine 000059892  
136 Naphthalene 000091203
137 Nickel compounds N495  
138 Nitrobenzene 000098953
139 O-anisidine 000090040
140 O-cresol 000095487
141 O-toluidine 000095534  
142 O-xylene 000095476  
143 P-cresol 000106445
144 P-phenylenediamine 000106503  
145 P-xylene 000106423  
146 Parathion 000056382
147 Pentachlorophenol 000087865
148 Phenol 000108952
149 Phosgene 000075445
150 Phosphine 007803512
151 Phosphorus (yellow or white) 007723140
152 Phthalic anhydride 000085449
153 Polychlorinated biphenyls 001336363
154 Polycyclic aromatic compounds N590  
155 Propane sultone 001120714  
156 Propionaldehyde 000123386  
157 Propoxur 000114261
158 Propylene oxide 000075569
159 Propyleneimine 000075558
160 Quinoline 000091225
161 Quinone 000106514
162 Quintozene 000082688
163 Selenium compounds N725  
164 Styrene 000100425
165 Styrene oxide 000096093  
166 Tetrachloroethylene 000127184
167 Titanium tetrachloride 007550450  
168 Toluene 000108883
169 Toluene-2,4-diisocyanate 000584849  
170 Toxaphene 008001352
171 Trichloroethylene 000079016
172 Triethylamine 000121448
173 Trifluralin 001582098
174 Urethane 000051796
175 Vinyl acetate 000108054
176 Vinyl bromide 000593602
177 Vinyl chloride 000075014
178 Vinylidene chloride 000075354
179 Xylene (mixed isomers) 001330207

Jump to main content.