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1993 ATSDR Substance Priority List

1993 RANK SUBSTANCE NAME TOTAL POINTS 1992 RANK CAS RN
1 LEAD 1689.94 1 007439-92-1
2 ARSENIC 1557.86 2 007440-38-2
3 MERCURY 1434.71 3 007439-97-6
4 BENZENE 1332.28 5 000071-43-2
5 VINYL CHLORIDE 1327.85 4 000075-01-4
6 CADMIUM 1283.37 6 007440-43-9
7 POLYCHLORINATED BIPHENYLS 1252.25 7 001336-36-3
8 BENZO(A)PYRENE 1223.21 9 000050-32-8
9 CHLOROFORM 1216.38 8 000067-66-3
10 BENZO(B)FLUORANTHENE 1192.74 11 000205-99-2
11 TRICHLOROETHYLENE 1163.39 10 000079-01-6
12 DDT, P,P'- 1146.37 12 000050-29-3
13 AROCLOR 1254 1131.10 14 011097-69-1
14 HEXACHLOROBUTADIENE 1124.34 32 000087-68-3
15 AROCLOR 1260 1123.06 13 011096-82-5
16 DDE, P,P'- 1092.82 15 000072-55-9
17 AROCLOR 1242 1091.67 25 053469-21-9
18 DIBENZO(A,H)ANTHRACENE 1083.44 22 000053-70-3
19 CHROMIUM, HEXAVALENT 1083.36 18 018540-29-9
20 DIELDRIN 1082.13 17 000060-57-1
21 CHLORDANE 1080.16 20 000057-74-9
22 HEXACHLOROCYCLOHEXANE, GAMMA- 1076.30 24 000058-89-9
23 TETRACHLOROETHYLENE 1069.69 21 000127-18-4
24 AROCLOR 1248 1066.44 19 012672-29-6
25 DDD, P,P'- 1060.45 16 000072-54-8
26 CREOSOTE 1055.03 23 008001-58-9
27 ALDRIN 1043.36 30 000309-00-2
28 HEXACHLOROCYCLOHEXANE, BETA- 1031.73 29 000319-85-7
29 HEPTACHLOR 1028.80 27 000076-44-8
30 DI-N-BUTYL PHTHALATE 1027.64 31 000084-74-2
31 CYANIDE 1026.15 28 000057-12-5
32 TOXAPHENE 1024.00 40 008001-35-2
33 ENDOSULFAN, ALPHA 1021.59 84 000959-98-8
34 PHOSPHORUS, WHITE 1016.68 78 007723-14-0
35 BENZO(A)ANTHRACENE 1004.84 38 000056-55-3
36 DISULFOTON 1003.17 42 000298-04-4
37 HEXACHLOROCYCLOHEXANE, DELTA- 1002.94 41 000319-86-8
38 AROCLOR 1221 995.90 33 011104-28-2
39 BERYLLIUM 993.39 39 007440-41-7
40 ENDOSULFAN SULFATE 991.14 48 001031-07-8
41 ENDOSULFAN, BETA 990.80 53 033213-65-9
42 AROCLOR 1016 990.69 34 012674-11-2
43 CARBON TETRACHLORIDE 989.19 35 000056-23-5
44 HEPTACHLOR EPOXIDE 985.88 44 001024-57-3
45 ENDRIN 984.53 36 000072-20-8
46 1,2-DIBROMOETHANE 984.19 54 000106-93-4
47 NICKEL 973.22 45 007440-02-0
48 CIS-CHLORDANE 972.28 112 005103-71-9
49 BENZIDINE 971.03 55 000092-87-5
50 MANGANESE 970.52 47 007439-96-5
51 PENTACHLOROPHENOL 966.15 46 000087-86-5
52 2,3,7,8-TETRACHLORODIBENZO-P-DIOXIN 965.63 26 001746-01-6
53 TOLUENE 963.37 37 000108-88-3
54 TRANS-CHLORDANE 960.93 126 005103-74-2
55 METHOXYCHLOR 950.43 56 000072-43-5
56 METHANE 949.25 52 000074-82-8
57 DIBROMOCHLOROPROPANE 946.86 49 067708-83-2
58 3,3'-DICHLOROBENZIDINE 943.11 57 000091-94-1
59 ENDOSULFAN 942.11 61 000115-29-7
60 BENZO(A)FLUORANTHENE 934.00 43 000203-33-8
61 CHROMIUM 926.16 60 007440-47-3
62 AROCLOR 1232 926.15 104 011141-16-5
63 DI(2-ETHYLHEXYL)PHTHALATE 923.99 62 000117-81-7
64 ZINC 917.59 58 007440-66-6
65 METHYLENE CHLORIDE 908.28 59 000075-09-2
66 ENDRIN KETONE 906.62 63 053494-70-5
67 BENZO(E)PYRENE 904.23 106 000192-97-2
68 2-HEXANONE 884.83 65 000591-78-6
69 1,1-DICHLOROETHENE 868.43 68 000075-35-4
70 NAPHTHALENE 866.26 67 000091-20-3
71 1,2-DICHLOROETHANE 865.83 64 000107-06-2
72 1,1,1-TRICHLOROETHANE 858.23 66 000071-55-6
73 ETHYLBENZENE 845.99 69 000100-41-4
74 ASBESTOS 837.20 73 001332-21-4
75 ALPHA RADIATION 832.66 71 012587-46-1
76 URANIUM 827.02 75 007440-61-1
77 BIS(2-CHLOROETHYL) ETHER 826.00 82 000111-44-4
78 RADIUM 825.96 76 007440-14-4
79 XYLENES, TOTAL 825.94 72 001330-20-7
80 2,4-DINITROPHENOL 822.62 94 000051-28-5
81 RADIUM-226 822.02 80 013982-63-3
82 THORIUM 820.96 81 007440-29-1
83 DIMETHYLARSINIC ACID 818.07 50 000075-60-5
84 2,4,6-TRICHLOROPHENOL 816.35 99 000088-06-2
85 CHLOROBENZENE 814.88 70 000108-90-7
86 DIAZINON 813.93 109 000333-41-5
87 RADON 813.71 85 010043-92-2
88 THORIUM-230 810.81 89 014269-63-7
89 RADIUM-228 810.18 117 015262-20-1
90 2,4,6-TRINITROTOLUENE 807.87 79 000118-96-7
91 THORIUM-228 806.03 122 014274-82-9
92 HEXACHLOROBENZENE 805.51 86 000118-74-1
93 CHRYSOTILE ASBESTOS 804.56 125 012001-29-5
94 METHYLMERCURY 804.35 171 022967-92-6
94 RADON-222 804.35 New 014859-67-7
96 THORON (RADON-220) 804.13 New 022481-48-7
97 4,6-DINITRO-O-CRESOL 802.85 98 000534-52-1
98 COPPER 801.98 87 007440-50-8
99 HEXACHLOROCYCLOHEXANE, ALPHA- 801.96 90 000319-84-6
100 FLUORANTHENE 801.88 88 000206-44-0
101 BARIUM 801.52 96 007440-39-3
102 OCTACHLORODIBENZOFURAN 800.66 74 039001-02-0
103 2,4-DINITROTOLUENE 797.16 92 000121-14-2
104 OCTACHLORODIBENZO-P-DIOXIN 796.36 77 003268-87-9
105 1,1,2,2-TETRACHLOROETHANE 795.11 83 000079-34-5
106 HEPTACHLORODIBENZO-P-DIOXIN 792.71 133 037871-00-4
107 DICOFOL 789.09 225 000115-32-2
108 1,3,5-TRINITROBENZENE 788.92 95 000099-35-4
109 N-NITROSODI-N-PROPYLAMINE 787.18 97 000621-64-7
110 CHRYSENE 784.78 102 000218-01-9
111 HEPTACHLORODIBENZOFURAN 779.91 141 038998-75-3
112 BETA RADIATION 779.35 105 012587-47-2
113 SELENIUM 772.12 100 007782-49-2
114 1,1-DICHLOROETHANE 771.48 91 000075-34-3
115 CHLORPYRIFOS 769.37 166 002921-88-2
116 RADIUM-224 768.12 130 013233-32-4
117 URANIUM-234 764.99 163 013966-29-5
117 URANIUM-235 764.99 159 015117-96-1
119 CESIUM-137 761.87 176 010045-97-3
119 1,2-DIBROMO-3-CHLOROPROPANE 761.87 114 000096-12-8
121 OXYCHLORDANE 761.25 169 027304-13-8
122 THORIUM-227 760.00 New 015623-47-9
123 AROCLOR 1240 759.44 New 071328-89-7
124 POTASSIUM-40 759.37 New 013966-00-2
124 TETRACHLOROBIPHENYL 759.37 New 026914-33-0
126 HEXACHLOROCYCLOPENTADIENE 756.52 127 000077-47-4
127 1,2-DICHLOROETHENE, TRANS- 756.42 107 000156-60-5
128 POLYBROMINATED BIPHENYLS 755.93 103 067774-32-7
129 PHENOL 755.84 101 000108-95-2
130 HEXACHLORODIBENZO-P-DIOXIN 752.13 144 034465-46-8
131 PENTACHLOROBENZENE 750.07 195 000608-93-5
132 4,4'-METHYLENEBIS(2-CHLOROANILINE) 745.87 93 000101-14-4
133 HEXACHLORODIBENZOFURAN 744.60 145 055684-94-1
134 HEXACHLOROCYCLOHEXANE, TECHNICAL GRADE 731.73 137 000608-73-1
135 ACROLEIN 722.28 108 000107-02-8
136 COBALT 719.74 132 007440-48-4
137 TRICHLOROETHANE 714.13 149 025323-89-1
138 PARATHION 713.79 136 000056-38-2
139 2,4,5-TRICHLOROPHENOL 713.30 196 000095-95-4
140 ACENAPHTHENE 711.69 135 000083-32-9
141 2-METHYLNAPHTHALENE 711.34 142 000091-57-6
142 1,4-DICHLOROBENZENE 698.02 138 000106-46-7
143 1,1,2-TRICHLOROETHANE 696.79 150 000079-00-5
144 ACETONE 692.98 134 000067-64-1
145 ENDRIN ALDEHYDE 690.55 110 007421-93-4
146 TREFLAN (TRIFLURALIN) 687.57 New 001582-09-8
147 CHLOROETHANE 681.50 139 000075-00-3
148 TETRACHLORODIBENZO-P-DIOXIN 681.45 151 041903-57-5
149 1,2-DICHLOROBENZENE 681.00 143 000095-50-1
150 BENZOFLUORANTHENE 679.03 111 056832-73-6
151 AMMONIA 677.38 147 007664-41-7
152 2,4-DIMETHYLPHENOL 675.10 152 000105-67-9
153 PENTACHLORODIBENZO-P-DIOXIN 674.91 140 036088-22-9
154 1,2-DIPHENYLHYDRAZINE 674.50 153 000122-66-7
155 PENTACHLORODIBENZOFURAN 671.26 154 030402-15-4
156 BUTYL BENZYL PHTHALATE 670.65 148 000085-68-7
157 TIN 669.52 157 007440-31-5
158 CARBON DISULFIDE 668.79 146 000075-15-0
159 INDENO(1,2,3-CD)PYRENE 666.03 156 000193-39-5
160 2,3,7,8-TETRACHLORODIBENZOFURAN 663.30 177 051207-31-9
161 TETRACHLOROPHENOL 654.77 131 025167-83-3
162 N-NITROSODIPHENYLAMINE 654.73 170 000086-30-6
163 ALUMINUM 654.53 158 007429-90-5
164 PERYLENE 652.30 120 000198-55-0
165 HYDRAZINE 643.90 51 000302-01-2
166 CHLOROMETHANE 638.56 160 000074-87-3
167 TETRACHLORODIBENZOFURAN 633.33 155 030402-14-3
168 2-BUTANONE 630.30 162 000078-93-3
169 LEAD-210 630.23 180 014255-04-0
170 KEPONE 628.98 167 000143-50-0
171 COAL TAR PITCH 626.82 115 065996-93-2
172 TRITIUM 626.20 118 010028-17-8
173 SILVER 626.12 161 007440-22-4
174 ARSENIC PENTOXIDE 622.45 172 001303-28-2
174 SODIUM ARSENITE 622.45 121 007784-46-5
176 1,2,4-TRICHLOROBENZENE 620.02 164 000120-82-1
177 ARSENIC TRIOXIDE 619.05 116 001327-53-3
178 VANADIUM 617.88 178 007440-62-2
179 POLONIUM-210 617.80 174 013981-52-7
180 GUTHION 616.55 128 000086-50-0
181 HEXACHLOROETHANE 616.27 165 000067-72-1
182 HEXANE, N- 613.86 237 000110-54-3
183 HYDROGEN SULFIDE 613.54 191 007783-06-4
184 ARSENIC ACID 611.90 119 007778-39-4
185 PLUTONIUM-238 611.27 175 013981-16-3
186 ARSINE 610.65 124 007784-42-1
186 COBALT-60 610.65 182 010198-40-0
188 PHENANTHRENE 610.52 181 000085-01-8
189 CARBOPHENOTHION 610.02 128 000786-19-6
189 CHLORDENE 610.02 173 003734-48-3
189 PLUTONIUM-239 610.02 186 015117-48-3
192 PLUTONIUM 609.40 187 007440-07-5
192 URANIUM-233 609.40 184 013968-55-3
194 ETHION 605.40 210 000563-12-2
195 1,3-DICHLOROBENZENE 604.61 168 000541-73-1
196 BROMODICHLOROETHANE 602.91 188 000683-53-4
197 STRONTIUM-90 602.50 184 010098-97-2
198 CARBON-14 601.87 New 014762-75-5
198 SODIUM-22 601.87 179 013966-32-0
198 SULFUR-35 601.87 183 015117-53-0
201 PYRENE 593.08 192 000129-00-0
202 2-CHLOROPHENOL 590.44 251 000095-57-8
203 DICHLOROBENZENE 588.65 189 025321-22-6
204 1,2-DICHLOROETHYLENE 587.13 194 000540-59-0
205 DIBENZOTHIOPHENE 583.82 544 000132-65-0
206 N-NITROSODIMETHYLAMINE 583.73 201 000062-75-9
207 CHLORODIBROMOMETHANE 583.52 190 000124-48-1
208 CHLORINE 581.23 197 007782-50-5
209 BROMOFORM 578.02 200 000075-25-2
210 2,4-DICHLOROPHENOL 577.50 248 000120-83-2
211 FLUORINE 574.36 202 007782-41-4
212 ANTIMONY 574.02 234 007440-36-0
213 CYCLOTRIMETHYLENETRINITRAMINE (RDX) 567.35 198 000121-82-4
214 NITRATE 566.67 193 014797-55-8
215 NALED 560.00 233 000300-76-5
216 4-NITROPHENOL 559.98 199 000100-02-7
217 DICHLORVOS 559.37 New 000062-73-7
217 2,3,4,6-TETRACHLOROPHENOL 559.37 269 000058-90-2
219 1,2-DICHLOROPROPANE 558.06 245 000078-87-5
220 DICHLOROETHANE 555.57 207 001300-21-6
221 FORMALDEHYDE 555.19 240 000050-00-0
222 2,4-D ACID 554.87 219 000094-75-7
223 TITANIUM 551.69 298 007440-32-6
224 2,6-DINITROTOLUENE 551.48 205 000606-20-2
225 ETHYL ETHER 551.36 208 000060-29-7
226 TETRACHLOROETHANE 550.95 252 025322-20-7
227 MOLYBDENUM 549.23 228 007439-98-7
228 NITRITE 547.17 New 014797-65-0
229 CRESOL, PARA- 546.52 209 000106-44-5
230 METHYL ISOBUTYL KETONE 538.43 231 000108-10-1
231 1,3-DICHLOROPROPENE, CIS- 537.69 235 010061-01-5
232 TRICHLOROBENZENE 535.64 255 012002-48-1
233 METHYLNAPHTHALENE 532.25 258 001321-94-4
234 METHYL-T-BUTYL ETHER 528.32 239 001634-04-4
235 ANTHRACENE 526.34 236 000120-12-7
236 CHLORODIFLUOROMETHANE 525.44 297 000075-45-6
237 FLUORENE 520.30 244 000086-73-7
238 1,3-DICHLOROPROPENE, TRANS- 519.16 305 010061-02-6
239 MALATHION 517.29 313 000121-75-5
240 FLUORIDE ION 516.58 241 016984-48-8
241 STYRENE 513.53 243 000100-42-5
242 O-XYLENE 513.21 216 000095-47-6
243 DIETHYL PHTHALATE 510.57 238 000084-66-2
244 BIPHENYL 504.54 351 000092-52-4
245 1,4-DIOXANE 497.20 254 000123-91-1
246 CARBAZOLE 491.80 260 000086-74-8
247 BENZO(K)FLUORANTHENE 488.97 256 000207-08-9
248 METHYL PARATHION 488.02 247 000298-00-0
249 DI-N-OCTYL PHTHALATE 486.81 250 000117-84-0
250 BENZOIC ACID 484.90 249 000065-85-0
251 2-NITROPHENOL 480.65 304 000088-75-5
252 THALLIUM 479.96 257 007440-28-0
253 2,4,5-TP ACID (SILVEX) 477.74 242 000093-72-1
254 ISOPROPANOL 474.45 279 000067-63-0
255 1-METHYLNAPHTHALENE 473.07 270 000090-12-0
256 1,2,3,4,6,7,8-HEPTACHLORODIBENZOFURAN 461.80 221 067562-39-4
257 TRICHLOROFLUOROMETHANE 461.16 271 000075-69-4
258 TRICHLOROPHENOL 459.45 213 025167-82-2
259 DICHLOROBROMOETHANE 458.01 348 073506-91-9
260 CHLOROTOLUENE 455.05 204 025168-05-2
261 DINITROTOLUENE 454.80 206 025321-14-6
262 BENZO(GHI)PERYLENE 452.98 268 000191-24-2
263 DIBENZOFURAN 451.05 267 000132-64-9
264 2,3,5,6-TETRACHLOROPHENOL 449.18 284 000935-95-5
265 1,2-DICHLOROETHENE, CIS- 448.97 261 000156-59-2
266 CRESOL, ORTHO- 445.88 273 000095-48-7
267 TRINITROPHENYLMETHYLNITRAMINE 445.45 253 000479-45-8
268 TETRAHYDROFURAN 443.68 262 000109-99-9
269 M-XYLENE 442.80 264 000108-38-3
270 METHYL METHACRYLATE 441.01 357 000080-62-6
271 CHROMIC ACID 439.59 203 007738-94-5
272 PICRIC ACID 438.00 214 000088-89-1
273 PENTACHLOROETHANE 432.10 215 000076-01-7
274 NITROBENZENE 431.92 276 000098-95-3
275 1,3-DINITROBENZENE 430.87 307 000099-65-0

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