Skip directly to search Skip directly to A to Z list Skip directly to navigation Skip directly to page options Skip directly to site content

1992 ATSDR Substance Priority List

1992 RANK SUBSTANCE NAME TOTAL POINTS 1991 RANK CAS RN
1 LEAD 1673.62 1 007439-92-1
2 ARSENIC 1538.50 2 007440-38-2
3 MERCURY 1403.07 3 007439-97-6
4 VINYL CHLORIDE 1337.81 4 000075-01-4
5 BENZENE 1331.33 5 000071-43-2
6 CADMIUM 1286.13 6 007440-43-9
7 POLYCHLORINATED BIPHENYLS 1256.30 7 001336-36-3
8 CHLOROFORM 1239.13 8 000067-66-3
9 BENZO(A)PYRENE 1207.80 12 000050-32-8
10 TRICHLOROETHYLENE 1191.21 10 000079-01-6
11 BENZO(B)FLUORANTHENE 1188.55 9 000205-99-2
12 DDT, P,P'- 1187.86 15 000050-29-3
13 AROCLOR 1260 1145.18 13 011096-82-5
14 AROCLOR 1254 1137.43 14 011097-69-1
15 DDE, P,P'- 1118.83 17 000072-55-9
16 DDD, P,P'- 1101.24 24 000072-54-8
17 DIELDRIN 1098.97 30 000060-57-1
18 CHROMIUM, HEXAVALENT 1090.57 19 018540-29-9
19 AROCLOR 1248 1090.40 18 012672-29-6
20 CHLORDANE 1084.14 11 000057-74-9
21 TETRACHLOROETHYLENE 1084.12 22 000127-18-4
22 DIBENZO(A,H)ANTHRACENE 1083.72 20 000053-70-3
23 CREOSOTE 1067.42 16 008001-58-9
24 HEXACHLOROCYCLOHEXANE, GAMMA- 1065.02 21 000058-89-9
25 AROCLOR 1242 1056.99 29 053469-21-9
26 2,3,7,8-TETRACHLORODIBENZO-P-DIOXIN 1049.56 39 001746-01-6
27 HEPTACHLOR 1047.79 26 000076-44-8
28 CYANIDE 1047.55 25 000057-12-5
29 HEXACHLOROCYCLOHEXANE, BETA- 1046.79 27 000319-85-7
30 ALDRIN 1046.13 23 000309-00-2
31 DI-N-BUTYL PHTHALATE 1045.88 28 000084-74-2
32 HEXACHLOROBUTADIENE 1034.63 36 000087-68-3
33 AROCLOR 1221 1016.47 165 011104-28-2
34 AROCLOR 1016 1010.60 91 012674-11-2
35 CARBON TETRACHLORIDE 1004.90 33 000056-23-5
36 ENDRIN 1001.19 32 000072-20-8
37 TOLUENE 995.46 35 000108-88-3
38 BENZO(A)ANTHRACENE 992.98 40 000056-55-3
39 BERYLLIUM 991.78 34 007440-41-7
40 TOXAPHENE 989.67 37 008001-35-2
41 HEXACHLOROCYCLOHEXANE, DELTA- 989.49 41 000319-86-8
42 DISULFOTON 983.73 112 000298-04-4
43 BENZO(A)FLUORANTHENE 977.76 54 000203-33-8
44 HEPTACHLOR EPOXIDE 975.54 51 001024-57-3
45 NICKEL 972.77 42 007440-02-0
46 PENTACHLOROPHENOL 971.33 31 000087-86-5
47 MANGANESE 965.41 43 007439-96-5
48 ENDOSULFAN SULFATE 961.29 86 001031-07-8
49 DIBROMOCHLOROPROPANE 955.61 44 067708-83-2
50 DIMETHYLARSINIC ACID 949.88 47 000075-60-5
51 HYDRAZINE 948.05 106 000302-01-2
52 METHANE 944.62 59 000074-82-8
53 ENDOSULFAN, BETA 943.51 48 033213-65-9
54 1,2-DIBROMOETHANE 941.41 49 000106-93-4
55 BENZIDINE 934.75 70 000092-87-5
56 METHOXYCHLOR 933.60 45 000072-43-5
57 3,3'-DICHLOROBENZIDINE 933.12 46 000091-94-1
58 ZINC 930.44 53 007440-66-6
59 METHYLENE CHLORIDE 928.07 52 000075-09-2
60 CHROMIUM 926.74 55 007440-47-3
61 ENDOSULFAN 924.95 57 000115-29-7
62 DI(2-ETHYLHEXYL)PHTHALATE 923.84 56 000117-81-7
63 ENDRIN KETONE 911.34 58 053494-70-5
64 1,2-DICHLOROETHANE 908.58 61 000107-06-2
65 2-HEXANONE 886.66 62 000591-78-6
66 1,1,1-TRICHLOROETHANE 882.31 64 000071-55-6
67 NAPHTHALENE 870.56 60 000091-20-3
68 1,1-DICHLOROETHENE 869.39 63 000075-35-4
69 ETHYLBENZENE 864.57 66 000100-41-4
70 CHLOROBENZENE 848.27 65 000108-90-7
71 ALPHA RADIATION 837.40 67 012587-46-1
72 XYLENES, TOTAL 836.51 68 001330-20-7
73 ASBESTOS 834.69 90 001332-21-4
74 OCTACHLORODIBENZOFURAN 829.13 89 039001-02-0
75 URANIUM 825.47 73 007440-61-1
76 RADIUM 823.21 71 007440-14-4
77 OCTACHLORODIBENZO-P-DIOXIN 820.40 93 003268-87-9
78 PHOSPHORUS, WHITE 819.73 87 007723-14-0
79 2,4,6-TRINITROTOLUENE 819.40 69 000118-96-7
80 RADIUM-226 819.15 103 013982-63-3
81 THORIUM 818.71 78 007440-29-1
82 BIS(2-CHLOROETHYL) ETHER 817.23 82 000111-44-4
83 1,1,2,2-TETRACHLOROETHANE 816.70 120 000079-34-5
84 ENDOSULFAN, ALPHA 816.10 38 000959-98-8
85 RADON 813.07 81 010043-92-2
86 HEXACHLOROBENZENE 812.82 122 000118-74-1
87 COPPER 812.72 74 007440-50-8
88 FLUORANTHENE 810.14 75 000206-44-0
89 THORIUM-230 809.69 153 014269-63-7
90 HEXACHLOROCYCLOHEXANE, ALPHA- 809.10 77 000319-84-6
91 1,1-DICHLOROETHANE 806.67 80 000075-34-3
92 2,4-DINITROTOLUENE 806.52 76 000121-14-2
93 4,4'-METHYLENEBIS(2-CHLOROANILINE) 803.20 79 000101-14-4
94 2,4-DINITROPHENOL 801.64 121 000051-28-5
95 1,3,5-TRINITROBENZENE 801.43 72 000099-35-4
96 BARIUM 801.37 84 007440-39-3
97 N-NITROSODI-N-PROPYLAMINE 794.42 83 000621-64-7
98 4,6-DINITRO-O-CRESOL 791.53 144 000534-52-1
99 2,4,6-TRICHLOROPHENOL 788.20 94 000088-06-2
100 SELENIUM 788.01 88 007782-49-2
101 PHENOL 782.82 85 000108-95-2
102 CHRYSENE 780.07 95 000218-01-9
103 POLYBROMINATED BIPHENYLS 778.06 92 067774-32-7
104 AROCLOR 1232 774.98 98 011141-16-5
105 BETA RADIATION 774.65 97 012587-47-2
106 BENZO(E)PYRENE 772.59 50 000192-97-2
107 1,2-DICHLOROETHENE, TRANS- 771.00 96 000156-60-5
108 ACROLEIN 768.03 101 000107-02-8
109 DIAZINON 766.76 100 000333-41-5
110 ENDRIN ALDEHYDE 765.65 102 007421-93-4
111 BENZOFLUORANTHENE 763.74 167 056832-73-6
112 ALPHA-CHLORDANE 761.27 104 005103-71-9
113 GAMMA-CHLORDANE 760.17 105 005566-34-7
114 1,2-DIBROMO-3-CHLOROPROPANE 758.43 111 000096-12-8
115 COAL TAR PITCH 758.15 New 065996-93-2
116 ARSENIC TRIOXIDE 757.93 109 001327-53-3
117 RADIUM-228 757.68 112 015262-20-1
118 TRITIUM 757.47 108 010028-17-8
119 ARSENIC ACID 756.58 157 007778-39-4
120 PERYLENE 756.54 109 000198-55-0
121 SODIUM ARSENITE 755.73 167 007784-46-5
122 THORIUM-228 754.98 116 014274-82-9
123 2,3,4,7,8-PENTACHLORODIBENZOFURAN 754.56 New 057117-31-4
124 ARSINE 754.30 159 007784-42-1
125 CHRYSOTILE ASBESTOS 753.84 114 012001-29-5
126 TRANS-CHLORDANE 753.63 New 005103-74-2
127 HEXACHLOROCYCLOPENTADIENE 753.56 107 000077-47-4
128 CARBOPHENOTHION 753.17 118 000786-19-6
128 GUTHION 753.17 117 000086-50-0
130 RADIUM-224 752.95 119 013233-32-4
131 TETRACHLOROPHENOL 736.02 143 025167-83-3
132 COBALT 730.93 124 007440-48-4
133 HEPTACHLORODIBENZO-P-DIOXIN 723.87 134 037871-00-4
134 ACETONE 720.33 99 000067-64-1
135 ACENAPHTHENE 719.44 127 000083-32-9
136 PARATHION 717.11 203 000056-38-2
137 HEXACHLOROCYCLOHEXANE, TECHNICAL GRADE 713.75 123 000608-73-1
138 1,4-DICHLOROBENZENE 707.25 138 000106-46-7
139 CHLOROETHANE 707.11 139 000075-00-3
140 PENTACHLORODIBENZO-P-DIOXIN 705.83 227 036088-22-9
141 HEPTACHLORODIBENZOFURAN 705.23 151 038998-75-3
142 2-METHYLNAPHTHALENE 704.70 128 000091-57-6
143 1,2-DICHLOROBENZENE 702.43 126 000095-50-1
144 HEXACHLORODIBENZO-P-DIOXIN 701.93 142 034465-46-8
145 HEXACHLORODIBENZOFURAN 696.25 148 055684-94-1
146 CARBON DISULFIDE 693.67 129 000075-15-0
147 AMMONIA 692.49 141 007664-41-7
148 BUTYL BENZYL PHTHALATE 691.33 133 000085-68-7
149 TRICHLOROETHANE 683.35 131 025323-89-1
150 1,1,2-TRICHLOROETHANE 681.50 132 000079-00-5
151 TETRACHLORODIBENZO-P-DIOXIN 681.00 125 041903-57-5
152 2,4-DIMETHYLPHENOL 678.73 130 000105-67-9
153 1,2-DIPHENYLHYDRAZINE 673.20 135 000122-66-7
154 PENTACHLORODIBENZOFURAN 671.91 171 030402-15-4
155 TETRACHLORODIBENZOFURAN 671.11 202 030402-14-3
156 INDENO(1,2,3-CD)PYRENE 665.43 149 000193-39-5
157 TIN 654.59 136 007440-31-5
158 ALUMINUM 654.29 140 007429-90-5
159 URANIUM-235 653.18 146 015117-96-1
160 CHLOROMETHANE 650.84 190 000074-87-3
161 SILVER 639.56 154 007440-22-4
162 2-BUTANONE 636.44 137 000078-93-3
163 URANIUM-234 636.00 152 013966-29-5
164 1,2,4-TRICHLOROBENZENE 629.96 145 000120-82-1
165 HEXACHLOROETHANE 629.25 155 000067-72-1
166 CHLORPYRIFOS 625.93 158 002921-88-2
167 KEPONE 625.13 156 000143-50-0
168 1,3-DICHLOROBENZENE 624.58 187 000541-73-1
169 OXYCHLORDANE 624.02 166 027304-13-8
170 N-NITROSODIPHENYLAMINE 624.00 186 000086-30-6
171 METHYLMERCURY 620.89 163 022967-92-6
172 ARSENIC PENTOXIDE 620.22 New 001303-28-2
173 CHLORDENE 619.66 162 003734-48-3
174 POLONIUM-210 619.11 169 013981-52-7
175 PLUTONIUM-238 618.56 169 013981-16-3
176 CESIUM-137 616.66 164 010045-97-3
177 2,3,7,8-TETRACHLORODIBENZOFURAN 614.36 226 051207-31-9
178 VANADIUM 612.16 177 007440-62-2
179 SODIUM-22 611.62 173 013966-32-0
180 LEAD-210 609.84 160 014255-04-0
181 PHENANTHRENE 609.47 161 000085-01-8
182 COBALT-60 608.06 173 010198-40-0
183 SULFUR-35 607.94 178 015117-53-0
184 STRONTIUM-90 607.39 179 010098-97-2
184 URANIUM-233 607.39 184 013968-55-3
186 PLUTONIUM-239 604.93 180 015117-48-3
187 PLUTONIUM 604.26 180 007440-07-5
188 BROMODICHLOROETHANE 602.94 183 000683-53-4
189 DICHLOROBENZENE 601.61 175 025321-22-6
190 CHLORODIBROMOMETHANE 598.25 182 000124-48-1
191 HYDROGEN SULFIDE 597.84 172 007783-06-4
192 PYRENE 595.09 176 000129-00-0
193 NITRATE 589.55 185 014797-55-8
194 1,2-DICHLOROETHYLENE 583.81 189 000540-59-0
195 PENTACHLOROBENZENE 581.76 255 000608-93-5
196 2,4,5-TRICHLOROPHENOL 581.23 193 000095-95-4
197 CHLORINE 580.56 192 007782-50-5
198 CYCLOTRIMETHYLENETRINITRAMINE (RDX) 579.38 188 000121-82-4
199 4-NITROPHENOL 579.02 208 000100-02-7
200 BROMOFORM 578.07 194 000075-25-2
201 N-NITROSODIMETHYLAMINE 576.54 195 000062-75-9
202 FLUORINE 572.62 198 007782-41-4
203 CHROMIC ACID 570.92 200 007738-94-5
204 CHLOROTOLUENE 563.46 307 025168-05-2
205 2,6-DINITROTOLUENE 562.52 196 000606-20-2
206 DINITROTOLUENE 561.35 205 025321-14-6
207 DICHLOROETHANE 560.96 201 001300-21-6
208 ETHYL ETHER 560.91 191 000060-29-7
209 CRESOL, PARA- 559.23 233 000106-44-5
210 ETHION 559.11 207 000563-12-2
211 SODIUM CYANIDE 557.26 206 000143-33-9
211 SODIUM DICHROMATE 557.26 204 010588-01-9
213 TRICHLOROPHENOL 557.22 115 025167-82-2
214 PICRIC ACID 556.12 210 000088-89-1
215 PENTACHLOROETHANE 555.87 212 000076-01-7
216 O-XYLENE 555.55 197 000095-47-6
217 DIMETHOATE 555.48 214 000060-51-5
218 CAPTAN 555.27 217 000133-06-2
219 2,4-D ACID 554.74 238 000094-75-7
220 1,2,3,4,6,7,8-HEPTACHLORODIBENZO-P-DIOXIN 554.56 280 035822-46-9
221 1,2,3,4,6,7,8-HEPTACHLORODIBENZOFURAN 553.88 New 067562-39-4
222 PHORATE 553.84 221 000298-02-2
223 PHOSGENE 553.63 220 000075-44-5
224 THIOUREA 553.42 New 000062-56-6
225 CARBOFURAN 553.17 215 001563-66-2
225 CUPRIC SULFATE 553.17 215 007758-98-7
225 DICOFOL 553.17 221 000115-32-2
228 MOLYBDENUM 553.17 199 007439-98-7
229 GLYCIDYLALDEHYDE 552.95 278 000765-34-4
229 PENTAERYTHRITOL TETRANITRATE 552.95 217 000078-11-5
231 METHYL ISOBUTYL KETONE 552.86 209 000108-10-1
232 DIMETHYL FORMAMIDE 552.79 265 000068-12-2
233 NALED 552.49 221 000300-76-5
234 ANTIMONY 549.37 232 007440-36-0
235 1,3-DICHLOROPROPENE, CIS- 541.94 229 010061-01-5
236 ANTHRACENE 541.22 230 000120-12-7
237 HEXANE, N- 537.25 150 000110-54-3
238 DIETHYL PHTHALATE 536.35 241 000084-66-2
239 METHYL-T-BUTYL ETHER 531.63 231 001634-04-4
240 FORMALDEHYDE 527.94 228 000050-00-0
241 FLUORIDE ION 524.12 242 016984-48-8
242 2,4,5-TP ACID (SILVEX) 523.93 297 000093-72-1
243 STYRENE 523.73 234 000100-42-5
244 FLUORENE 516.33 239 000086-73-7
245 1,2-DICHLOROPROPANE 511.36 237 000078-87-5
246 CHROMIUM(VI) TRIOXIDE 504.81 306 001333-82-0
247 METHYL PARATHION 503.13 305 000298-00-0
248 2,4-DICHLOROPHENOL 502.62 243 000120-83-2
249 BENZOIC ACID 501.96 246 000065-85-0
250 DI-N-OCTYL PHTHALATE 501.68 236 000117-84-0
251 2-CHLOROPHENOL 501.49 245 000095-57-8
252 TETRACHLOROETHANE 493.75 372 025322-20-7
253 TRINITROPHENYLMETHYLNITRAMINE 489.68 244 000479-45-8
254 1,4-DIOXANE 486.64 394 000123-91-1
255 TRICHLOROBENZENE 486.14 240 012002-48-1
256 BENZO(K)FLUORANTHENE 479.51 252 000207-08-9
257 THALLIUM 466.82 269 007440-28-0
258 METHYLNAPHTHALENE 464.71 296 001321-94-4
259 MUSTARD GAS 460.73 New 000505-60-2
260 CARBAZOLE 454.93 251 000086-74-8
261 1,2-DICHLOROETHENE, CIS- 452.95 253 000156-59-2
262 TETRAHYDROFURAN 451.82 248 000109-99-9
263 ACENAPHTHYLENE 450.73 282 000208-96-8
264 M-XYLENE 447.37 247 000108-38-3
265 1,3-BUTADIENE 446.25 259 000106-99-0
266 P-XYLENE 446.05 249 000106-42-3
267 DIBENZOFURAN 445.27 261 000132-64-9
268 BENZO(GHI)PERYLENE 444.80 275 000191-24-2
269 2,3,4,6-TETRACHLOROPHENOL 444.77 258 000058-90-2
270 1-METHYLNAPHTHALENE 444.55 257 000090-12-0
271 TRICHLOROFLUOROMETHANE 442.53 235 000075-69-4
272 DICHLOROETHYLENE 439.84 254 025323-30-2
273 CRESOL, ORTHO- 439.57 263 000095-48-7
274 BORON 436.02 256 007440-42-8
275 2,3,4,5-TETRACHLOROPHENOL 434.95 260 004901-51-3

Additional Resources

Key Resources

Top