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TRI Explorer

Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Chemicals

EPA developed the list of CERCLA hazardous substances reported to the TRI by comparing the list of chemicals at 40 CFR 302.4 (i.e., "Designation of Hazardous Substances") to the TRI list of reportable toxic chemicals for reporting years 1987 through 2011. In making this comparison, EPA used the individually TRI-listed chemicals (i.e., chemicals identified through Chemical Abstract Service registry number (CASRN)) as well as the TRI chemical categories (e.g., N010, antimony compounds; N106, cyanide compounds).

Note: the TRI chemical categories may include chemicals in the list of CERCLA hazardous substances as well as other chemicals. For example, the TRI chemical category N590, polycyclic aromatic compounds (PACs), includes benzo(a)anthracene, a chemical in the list of CERCLA hazardous substance, as well as 1-nitropyrene, a chemical not in the list of CERCLA hazardous substances. Therefore, the use of TRI chemical categories might result in the overestimation of the actual chemical quantities associated with CERCLA hazardous substances.

TRI CERCLA Chemicals
Row # Chemical Name CAS Number EPA's IRIS Substance File (Risk Information)
1 1,1,1,2-TETRACHLOROETHANE 000630206
2 1,1,1-TRICHLOROETHANE 000071556
3 1,1,2,2-TETRACHLOROETHANE 000079345
4 1,1,2-TRICHLOROETHANE 000079005
5 1,1-DIMETHYL HYDRAZINE 000057147  
6 1,2,4-TRICHLOROBENZENE 000120821
7 1,2-BUTYLENE OXIDE 000106887  
8 1,2-DIBROMO-3-CHLOROPROPANE 000096128  
9 1,2-DIBROMOETHANE 000106934
10 1,2-DICHLOROBENZENE 000095501
11 1,2-DICHLOROETHANE 000107062
12 1,2-DICHLOROPROPANE 000078875
13 1,2-DIPHENYLHYDRAZINE 000122667
14 1,3-BUTADIENE 000106990
15 1,3-DICHLOROBENZENE 000541731
16 1,3-DICHLOROPROPYLENE 000542756  
17 1,4-DICHLORO-2-BUTENE 000764410  
18 1,4-DICHLOROBENZENE 000106467
19 1,4-DIOXANE 000123911
20 2,3-DICHLOROPROPENE 000078886  
21 2,4,5-TRICHLOROPHENOL 000095954
22 2,4,6-TRICHLOROPHENOL 000088062
23 2,4-D 000094757  
24 2,4-D BUTOXYETHYL ESTER 001929733  
25 2,4-D BUTYL ESTER 000094804  
26 2,4-D CHLOROCROTYL ESTER 002971382  
27 2,4-D ISOPROPYL ESTER 000094111  
28 2,4-D PROPYLENE GLYCOL BUTYL ETHER ESTER 001320189  
29 2,4-DIAMINOTOLUENE 000095807
30 2,4-DICHLOROPHENOL 000120832
31 2,4-DIMETHYLPHENOL 000105679
32 2,4-DINITROPHENOL 000051285
33 2,4-DINITROTOLUENE 000121142
34 2,4-DITHIOBIURET 000541537  
35 2,6-DINITROTOLUENE 000606202  
36 2-ACETYLAMINOFLUORENE 000053963  
37 2-CHLOROACETOPHENONE 000532274
38 2-ETHOXYETHANOL 000110805
39 2-METHYLLACTONITRILE 000075865  
40 2-METHYLPYRIDINE 000109068  
41 2-NITROPHENOL 000088755  
42 2-NITROPROPANE 000079469
43 3,3'-DICHLOROBENZIDINE 000091941
44 3,3'-DIMETHOXYBENZIDINE 000119904  
45 3,3'-DIMETHYLBENZIDINE 000119937  
46 3-CHLOROPROPIONITRILE 000542767  
47 4,4'-METHYLENEBIS(2-CHLOROANILINE) 000101144  
48 4,4'-METHYLENEDIANILINE 000101779  
49 4,6-DINITRO-O-CRESOL 000534521  
50 4-AMINOBIPHENYL 000092671  
51 4-DIMETHYLAMINOAZOBENZENE 000060117  
52 4-NITROBIPHENYL 000092933  
53 4-NITROPHENOL 000100027  
54 5-NITRO-O-TOLUIDINE 000099558  
55 ACETALDEHYDE 000075070
56 ACETAMIDE 000060355  
57 ACETONITRILE 000075058
58 ACETOPHENONE 000098862
59 ACROLEIN 000107028
60 ACRYLAMIDE 000079061
61 ACRYLIC ACID 000079107
62 ACRYLONITRILE 000107131
63 ALDICARB 000116063
64 ALDRIN 000309002
65 ALLYL ALCOHOL 000107186
66 ALLYL CHLORIDE 000107051
67 ALPHA-HEXACHLOROCYCLOHEXANE 000319846  
68 ALPHA-NAPHTHYLAMINE 000134327  
69 ALUMINUM PHOSPHIDE 020859738
70 AMITROLE 000061825  
71 AMMONIA 007664417
72 ANILINE 000062533
73 ANTHRACENE 000120127
74 ANTIMONY 007440360
75 ANTIMONY COMPOUNDS N010  
76 ARSENIC 007440382  
77 ARSENIC COMPOUNDS N020  
78 ASBESTOS (FRIABLE) 001332214  
79 BARIUM COMPOUNDS N040  
80 BENDIOCARB 022781233  
81 BENOMYL 017804352
82 BENZAL CHLORIDE 000098873  
83 BENZENE 000071432
84 BENZIDINE 000092875
85 BENZO(G,H,I)PERYLENE 000191242  
86 BENZOIC TRICHLORIDE 000098077  
87 BENZOYL CHLORIDE 000098884  
88 BENZYL CHLORIDE 000100447
89 BERYLLIUM 007440417  
90 BERYLLIUM COMPOUNDS N050  
91 BETA-NAPHTHYLAMINE 000091598  
92 BETA-PROPIOLACTONE 000057578
93 BIPHENYL 000092524  
94 BIS(2-CHLORO-1-METHYLETHYL) ETHER 000108601
95 BIS(2-CHLOROETHOXY)METHANE 000111911
96 BIS(2-CHLOROETHYL) ETHER 000111444  
97 BIS(CHLOROMETHYL) ETHER 000542881  
98 BROMOFORM 000075252
99 BROMOMETHANE 000074839
100 BRUCINE 000357573  
101 C.I. SOLVENT YELLOW 34 000492808  
102 CADMIUM 007440439
103 CADMIUM COMPOUNDS N078  
104 CALCIUM CYANAMIDE 000156627  
105 CAPTAN 000133062
106 CARBARYL 000063252
107 CARBOFURAN 001563662
108 CARBON DISULFIDE 000075150
109 CARBON TETRACHLORIDE 000056235
110 CARBONYL SULFIDE 000463581
111 CATECHOL 000120809  
112 CERTAIN GLYCOL ETHERS N230  
113 CHLORAMBEN 000133904
114 CHLORDANE 000057749  
115 CHLORINE 007782505
116 CHLOROACETIC ACID 000079118  
117 CHLOROBENZENE 000108907
118 CHLOROBENZILATE 000510156
119 CHLOROETHANE 000075003  
120 CHLOROFORM 000067663
121 CHLOROMETHANE 000074873  
122 CHLOROMETHYL METHYL ETHER 000107302  
123 CHLOROPHENOLS N084  
124 CHLOROPRENE 000126998
125 CHROMIUM 007440473  
126 CHROMIUM COMPOUNDS(EXCEPT CHROMITE ORE MINED IN THE TRANSVAAL REGION) N090  
127 COBALT COMPOUNDS N096  
128 COPPER 007440508
129 COPPER COMPOUNDS N100  
130 CRESOL (MIXED ISOMERS) 001319773  
131 CROTONALDEHYDE 004170303
132 CUMENE 000098828
133 CUMENE HYDROPEROXIDE 000080159  
134 CYANIDE COMPOUNDS N106  
135 CYCLOHEXANE 000110827
136 DI(2-ETHYLHEXYL) PHTHALATE 000117817  
137 DIALLATE 002303164  
138 DIAMINOTOLUENE (MIXED ISOMERS) 025376458  
139 DIAZINON 000333415  
140 DIAZOMETHANE 000334883
141 DIBENZOFURAN 000132649
142 DIBUTYL PHTHALATE 000084742
143 DICAMBA 001918009
144 DICHLOROBENZENE (MIXED ISOMERS) 025321226  
145 DICHLOROBROMOMETHANE 000075274  
146 DICHLORODIFLUOROMETHANE 000075718
147 DICHLOROMETHANE 000075092
148 DICHLORVOS 000062737
149 DICOFOL 000115322
150 DIEPOXYBUTANE 001464535  
151 DIETHANOLAMINE 000111422  
152 DIETHYL SULFATE 000064675
153 DIHYDROSAFROLE 000094586  
154 DIISOCYANATES N120  
155 DIMETHOATE 000060515
156 DIMETHYL PHTHALATE 000131113
157 DIMETHYL SULFATE 000077781
158 DIMETHYLAMINE 000124403
159 DIMETHYLCARBAMYL CHLORIDE 000079447  
160 DINITROBUTYL PHENOL 000088857  
161 DINITROTOLUENE (MIXED ISOMERS) 025321146  
162 DIOXIN AND DIOXIN-LIKE COMPOUNDS N150  
163 DIURON 000330541
164 EPICHLOROHYDRIN 000106898
165 ETHYL ACRYLATE 000140885  
166 ETHYLBENZENE 000100414
167 ETHYLENE GLYCOL 000107211
168 ETHYLENE OXIDE 000075218  
169 ETHYLENE THIOUREA 000096457  
170 ETHYLENEBISDITHIOCARBAMIC ACID, SALTS AND ESTERS N171  
171 ETHYLENEIMINE 000151564
172 ETHYLIDENE DICHLORIDE 000075343  
173 FAMPHUR 000052857  
174 FLUORINE 007782414  
175 FORMALDEHYDE 000050000
176 FORMIC ACID 000064186
177 FREON 113 000076131  
178 FURAN 000110009  
179 HEPTACHLOR 000076448
180 HEXACHLORO-1,3-BUTADIENE 000087683  
181 HEXACHLOROBENZENE 000118741
182 HEXACHLOROCYCLOPENTADIENE 000077474  
183 HEXACHLOROETHANE 000067721
184 HEXACHLOROPHENE 000070304
185 HEXAMETHYLPHOSPHORAMIDE 000680319  
186 HYDRAZINE 000302012  
187 HYDROCHLORIC ACID (1995 AND AFTER "ACID AEROSOLS" ONLY) 007647010  
188 HYDROGEN CYANIDE 000074908  
189 HYDROGEN FLUORIDE 007664393  
190 HYDROQUINONE 000123319
191 ISODRIN 000465736  
192 ISOPRENE 000078795  
193 ISOSAFROLE 000120581  
194 LEAD 007439921  
195 LEAD COMPOUNDS N420  
196 LINDANE 000058899  
197 M-CRESOL 000108394  
198 M-DINITROBENZENE 000099650
199 M-XYLENE 000108383  
200 MALATHION 000121755
201 MALEIC ANHYDRIDE 000108316
202 MALONONITRILE 000109773  
203 MANGANESE COMPOUNDS N450  
204 MERCURY 007439976  
205 MERCURY COMPOUNDS N458  
206 METHACRYLONITRILE 000126987
207 METHANOL 000067561
208 METHIOCARB 002032657  
209 METHOXYCHLOR 000072435
210 METHYL CHLOROCARBONATE 000079221
211 METHYL HYDRAZINE 000060344  
212 METHYL IODIDE 000074884
213 METHYL ISOBUTYL KETONE 000108101  
214 METHYL ISOCYANATE 000624839
215 METHYL METHACRYLATE 000080626
216 METHYL PARATHION 000298000
217 METHYL TERT-BUTYL ETHER 001634044  
218 METHYLENE BROMIDE 000074953  
219 METHYLENEBIS(PHENYLISOCYANATE) 000101688  
220 MEVINPHOS 007786347  
221 N,N-DIMETHYLANILINE 000121697  
222 N,N-DIMETHYLFORMAMIDE 000068122
223 N-BUTYL ALCOHOL 000071363  
224 N-HEXANE 000110543
225 N-NITROSO-N-ETHYLUREA 000759739  
226 N-NITROSO-N-METHYLUREA 000684935  
227 N-NITROSODI-N-BUTYLAMINE 000924163  
228 N-NITROSODI-N-PROPYLAMINE 000621647
229 N-NITROSODIETHYLAMINE 000055185
230 N-NITROSODIMETHYLAMINE 000062759
231 N-NITROSODIPHENYLAMINE 000086306
232 N-NITROSOMETHYLVINYLAMINE 004549400  
233 N-NITROSOMORPHOLINE 000059892  
234 N-NITROSOPIPERIDINE 000100754  
235 NALED 000300765
236 NAPHTHALENE 000091203
237 NICKEL 007440020  
238 NICKEL COMPOUNDS N495  
239 NICOTINE AND SALTS N503  
240 NITRATE COMPOUNDS N511  
241 NITRIC ACID 007697372  
242 NITROBENZENE 000098953
243 NITROGLYCERIN 000055630  
244 O-ANISIDINE 000090040  
245 O-CRESOL 000095487  
246 O-DINITROBENZENE 000528290
247 O-TOLUIDINE 000095534  
248 O-TOLUIDINE HYDROCHLORIDE 000636215  
249 O-XYLENE 000095476  
250 OSMIUM TETROXIDE 020816120  
251 P-CHLOROANILINE 000106478
252 P-CRESOL 000106445  
253 P-DINITROBENZENE 000100254  
254 P-NITROANILINE 000100016  
255 P-PHENYLENEDIAMINE 000106503  
256 P-XYLENE 000106423  
257 PARALDEHYDE 000123637  
258 PARATHION 000056382
259 PENTACHLOROBENZENE 000608935
260 PENTACHLOROETHANE 000076017  
261 PENTACHLOROPHENOL 000087865
262 PERCHLOROMETHYL MERCAPTAN 000594423  
263 PHENANTHRENE 000085018
264 PHENOL 000108952
265 PHOSGENE 000075445
266 PHOSPHINE 007803512
267 PHOSPHORUS (YELLOW OR WHITE) 007723140  
268 PHTHALIC ANHYDRIDE 000085449
269 POLYCHLORINATED BIPHENYLS 001336363  
270 POLYCYCLIC AROMATIC COMPOUNDS N590  
271 PRONAMIDE 023950585
272 PROPANE SULTONE 001120714  
273 PROPARGITE 002312358
274 PROPARGYL ALCOHOL 000107197
275 PROPIONALDEHYDE 000123386
276 PROPOXUR 000114261  
277 PROPYLENE OXIDE 000075569
278 PROPYLENEIMINE 000075558
279 PYRIDINE 000110861
280 QUINOLINE 000091225
281 QUINONE 000106514
282 QUINTOZENE 000082688  
283 SACCHARIN (MANUFACTURING, NO SUPPLIER NOTIFICATION) 000081072  
284 SAFROLE 000094597  
285 SELENIUM 007782492  
286 SELENIUM COMPOUNDS N725  
287 SILVER 007440224
288 SILVER COMPOUNDS N740  
289 SODIUM AZIDE 026628228
290 SODIUM FLUOROACETATE 000062748
291 SODIUM NITRITE 007632000  
292 STRYCHNINE AND SALTS N746  
293 STYRENE 000100425
294 STYRENE OXIDE 000096093  
295 SULFURIC ACID (1994 AND AFTER "ACID AEROSOLS" ONLY) 007664939  
296 TETRACHLOROETHYLENE 000127184
297 TETRANITROMETHANE 000509148  
298 THALLIUM 007440280  
299 THALLIUM COMPOUNDS N760  
300 THIOACETAMIDE 000062555  
301 THIODICARB 059669260  
302 THIOPHANATE-METHYL 023564058
303 THIOSEMICARBAZIDE 000079196  
304 THIOUREA 000062566  
305 THIRAM 000137268
306 TITANIUM TETRACHLORIDE 007550450  
307 TOLUENE 000108883
308 TOLUENE DIISOCYANATE (MIXED ISOMERS)