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1997 ATSDR Substance Priority List

1997 RANK SUBSTANCE NAME TOTAL POINTS 1995 RANK CAS RN
1 ARSENIC 1627.32 2 007440-38-2
2 LEAD 1522.67 1 007439-92-1
3 MERCURY 1492.21 3 007439-97-6
4 VINYL CHLORIDE 1397.67 4 000075-01-4
5 BENZENE 1372.88 5 000071-43-2
6 POLYCHLORINATED BIPHENYLS 1340.07 6 001336-36-3
7 CADMIUM 1315.14 7 007440-43-9
8 BENZO(A)PYRENE 1285.71 8 000050-32-8
9 BENZO(B)FLUORANTHENE 1257.85 10 000205-99-2
10 POLYCYCLIC AROMATIC HYDROCARBONS 1251.50 NEW 130498-29-2
11 CHLOROFORM 1249.95 9 000067-66-3
12 AROCLOR 1254 1186.77 14 011097-69-1
13 DDT, P,P'- 1183.50 11 000050-29-3
14 AROCLOR 1260 1182.97 12 011096-82-5
15 TRICHLOROETHYLENE 1160.83 13 000079-01-6
16 CHROMIUM, HEXAVALENT 1152.07 15 018540-29-9
17 DIBENZO(A,H)ANTHRACENE 1141.98 17 000053-70-3
18 DIELDRIN 1130.30 20 000060-57-1
19 HEXACHLOROBUTADIENE 1129.40 18 000087-68-3
20 CHLORDANE 1121.25 16 000057-74-9
21 CREOSOTE 1121.05 23 008001-58-9
22 DDE, P,P'- 1117.44 22 000072-55-9
23 BENZIDINE 1116.19 26 000092-87-5
24 CYANIDE 1113.09 24 000057-12-5
25 ALDRIN 1108.37 29 000309-00-2
26 DDD, P,P'- 1104.19 19 000072-54-8
27 AROCLOR 1248 1098.88 27 012672-29-6
28 PHOSPHORUS 1094.63 30 007723-14-0
29 AROCLOR 1242 1091.22 25 053469-21-9
30 HEPTACHLOR 1087.81 39 000076-44-8
31 TOXAPHENE 1084.63 32 008001-35-2
32 HEXACHLOROCYCLOHEXANE, GAMMA- 1084.48 21 000058-89-9
33 TETRACHLOROETHYLENE 1082.21 28 000127-18-4
34 AROCLOR 1221 1070.41 34 011104-28-2
35 HEXACHLOROCYCLOHEXANE, BETA- 1056.50 36 000319-85-7
36 1,2-DIBROMOETHANE 1054.20 31 000106-93-4
37 DISULFOTON 1052.88 35 000298-04-4
38 BENZO(A)ANTHRACENE 1047.78 37 000056-55-3
39 ENDRIN 1040.58 38 000072-20-8
40 AROCLOR 1016 1031.03 43 012674-11-2
41 HEXACHLOROCYCLOHEXANE, DELTA- 1029.75 44 000319-86-8
42 DI-N-BUTYL PHTHALATE 1028.68 40 000084-74-2
43 1,2-DIBROMO-3-CHLOROPROPANE 1027.45 33 000096-12-8
44 BERYLLIUM 1023.27 46 007440-41-7
45 PENTACHLOROPHENOL 1022.95 45 000087-86-5
46 CARBON TETRACHLORIDE 1018.10 42 000056-23-5
47 COBALT 1011.99 148 007440-48-4
48 ENDOSULFAN, ALPHA 1010.08 52 000959-98-8
49 NICKEL 1004.94 49 007440-02-0
50 ENDOSULFAN SULFATE 1004.02 50 001031-07-8
51 3,3'-DICHLOROBENZIDINE 998.02 53 000091-94-1
52 HEPTACHLOR EPOXIDE 992.17 54 001024-57-3
53 ENDOSULFAN 990.07 58 000115-29-7
54 DIBROMOCHLOROPROPANE 987.92 59 067708-83-2
55 AROCLOR 986.15 63 012767-79-2
56 ENDOSULFAN, BETA 981.77 61 033213-65-9
57 ENDRIN KETONE 978.82 56 053494-70-5
58 AROCLOR 1232 974.72 60 011141-16-5
59 BENZO(K)FLUORANTHENE 972.84 NEW 000207-08-9
60 2-HEXANONE 970.35 65 000591-78-6
61 TOLUENE 969.44 55 000108-88-3
62 CIS-CHLORDANE 959.77 66 005103-71-9
63 METHANE 956.21 67 000074-82-8
64 TRANS-CHLORDANE 951.80 62 005103-74-2
65 ZINC 932.34 68 007440-66-6
66 2,3,7,8-TETRACHLORODIBENZO-P-DIOXIN 928.58 69 001746-01-6
67 DI(2-ETHYLHEXYL)PHTHALATE 923.15 70 000117-81-7
68 METHOXYCHLOR 916.15 51 000072-43-5
69 CHROMIUM 908.93 72 007440-47-3
70 METHYLENE CHLORIDE 908.12 71 000075-09-2
71 BENZOFLUORANTHENE 907.82 48 056832-73-6
72 NAPHTHALENE 902.82 73 000091-20-3
73 1,1-DICHLOROETHENE 894.46 74 000075-35-4
74 1,2-DICHLOROETHANE 871.62 77 000107-06-2
75 CYCLOTRIMETHYLENETRINITRAMINE (RDX) 871.35 230 000121-82-4
76 BIS(2-CHLOROETHYL) ETHER 869.02 78 000111-44-4
77 2,4-DINITROPHENOL 867.30 79 000051-28-5
78 2,4,6-TRINITROTOLUENE 866.63 82 000118-96-7
79 1,1,1-TRICHLOROETHANE 858.26 76 000071-55-6
80 1,1,2,2-TETRACHLOROETHANE 851.93 85 000079-34-5
81 ETHYL BENZENE 847.51 80 000100-41-4
82 2,4,6-TRICHLOROPHENOL 845.69 86 000088-06-2
83 TOTAL XYLENES 844.63 83 001330-20-7
84 ENDRIN ALDEHYDE 842.70 64 007421-93-4
85 THIOCYANATE 842.29 NEW 000302-04-5
86 ASBESTOS 841.33 89 001332-21-4
87 4,6-DINITRO-O-CRESOL 837.64 90 000534-52-1
88 URANIUM 831.94 92 007440-61-1
89 CHLOROBENZENE 829.90 91 000108-90-7
90 RADIUM 829.28 97 007440-14-4
91 RADIUM-226 829.10 93 013982-63-3
92 ETHION 827.76 98 000563-12-2
93 HEXACHLOROBENZENE 827.25 94 000118-74-1
94 DIMETHYLARSINIC ACID 826.85 87 000075-60-5
95 THORIUM 824.99 96 007440-29-1
96 FLUORANTHENE 817.60 101 000206-44-0
97 RADON 817.53 100 010043-92-2
98 BARIUM 816.92 95 007440-39-3
99 2,4-DINITROTOLUENE 816.26 105 000121-14-2
100 DIAZINON 814.01 104 000333-41-5
101 THORIUM-230 813.54 102 014269-63-7
102 RADIUM-228 813.21 103 015262-20-1
103 URANIUM-235 812.64 109 015117-96-1
104 URANIUM-234 811.75 111 013966-29-5
105 1,3,5-TRINITROBENZENE 811.54 112 000099-35-4
106 THORIUM-228 810.47 108 014274-82-9
107 N-NITROSODI-N-PROPYLAMINE 809.74 106 000621-64-7
108 HEXACHLOROCYCLOHEXANE, ALPHA- 809.46 118 000319-84-6
109 TRITIUM 809.15 188 010028-17-8
110 CESIUM-137 808.35 119 010045-97-3
111 RADON-222 808.29 116 014859-67-7
112 POLONIUM-210 807.78 137 013981-52-7
113 CHRYSOTILE ASBESTOS 807.54 114 012001-29-5
114 METHYLMERCURY 806.26 123 022967-92-6
115 THORIUM-227 806.17 117 015623-47-9
116 CHRYSENE 806.09 113 000218-01-9
117 THORON (RADON-220) 805.93 121 022481-48-7
118 PLUTONIUM-238 805.75 124 013981-16-3
119 COAL TARS 805.52 NEW 008007-45-2
120 CHLORPYRIFOS 805.19 120 002921-88-2
121 COBALT-60 804.86 205 010198-40-0
122 LEAD-210 804.38 183 014255-04-0
123 PLUTONIUM-239 804.29 129 015117-48-3
123 POTASSIUM-40 804.29 129 013966-00-2
125 STRONTIUM-90 804.05 223 010098-97-2
126 AMERICIUM-241 803.73 NEW 086954-36-1
126 PLUTONIUM 803.73 209 007440-07-5
128 IODINE-131 802.92 NEW 010043-66-0
129 AMOSITE ASBESTOS 802.59 128 012172-73-5
129 GUTHION 802.59 191 000086-50-0
131 BISMUTH-214 802.36 NEW 014733-03-0
131 LEAD-214 802.36 NEW 015067-28-4
133 KEPONE 802.03 187 000143-50-0
133 PLUTONIUM-240 802.03 NEW 014119-33-6
133 TRIBUTLYTIN 802.03 NEW 000688-73-3
136 COPPER 797.77 110 007440-50-8
137 S,S,S-TRIBUTYL PHOSPHOROTRITHIOATE 790.05 NEW 000078-48-8
138 MANGANESE 787.11 41 007439-96-5
139 POLYBROMINATED BIPHENYLS 781.40 134 067774-32-7
140 DICOFOL 779.80 136 000115-32-2
141 HEPTACHLORODIBENZO-P-DIOXIN 778.15 99 037871-00-4
142 SELENIUM 777.71 135 007782-49-2
143 PARATHION 772.49 142 000056-38-2
144 HEXACHLOROCYCLOHEXANE 770.93 140 000608-73-1
145 1,1-DICHLOROETHANE 765.48 139 000075-34-3
146 PENTACHLOROBENZENE 764.90 144 000608-93-5
147 TRICHLOROFLUOROETHANE 762.34 218 027154-33-2
148 1,2,3,4,6,7,8,9-OCTACHLORODIBENZOFURAN 760.87 88 039001-02-0
149 4,4'-METHYLENEBIS(2-CHLOROANILINE) 758.35 145 000101-14-4
150 HEXACHLORODIBENZO-P-DIOXIN 751.93 146 034465-46-8
151 1,1,2-TRICHLOROETHANE 750.84 155 000079-00-5
152 CHLORINE 750.73 84 007782-50-5
153 AMMONIA 748.21 147 007664-41-7
154 HEPTACHLORODIBENZOFURAN 745.79 131 038998-75-3
155 ACENAPHTHENE 743.04 150 000083-32-9
156 2-METHYLNAPHTHALENE 740.06 154 000091-57-6
157 1,2-DICHLOROETHENE, TRANS- 736.35 149 000156-60-5
158 PHENOL 733.70 81 000108-95-2
159 CHROMIUM (VI) TRIOXIDE 723.00 NEW 001333-82-0
160 TRICHLOROETHANE 714.58 133 025323-89-1
161 BROMINE 709.92 NEW 007726-95-6
162 1,4-DICHLOROBENZENE 709.67 156 000106-46-7
163 1,2-DICHLOROBENZENE 707.59 157 000095-50-1
164 LEAD-212 705.46 125 015092-94-1
165 OXYCHLORDANE 705.35 115 027304-13-8
166 RADIUM-224 703.90 121 013233-32-4
167 BISMUTH-212 702.51 125 014913-49-6
168 1,2-DIPHENYLHYDRAZINE 700.49 158 000122-66-7
169 TETRACHLOROPHENOL 695.54 132 025167-83-3
170 CARBON DISULFIDE 695.24 152 000075-15-0
171 HYDROGEN SULFIDE 694.52 159 007783-06-4
172 CHLOROETHANE 693.13 160 000075-00-3
173 ACETONE 692.84 151 000067-64-1
174 HEXACHLORODIBENZOFURAN 690.59 153 055684-94-1
175 DIBENZOFURAN 684.92 NEW 000132-64-9
176 2,4-DIMETHYLPHENOL 683.18 162 000105-67-9
177 INDENO(1,2,3-CD)PYRENE 681.13 161 000193-39-5
178 ALUMINUM 678.54 164 007429-90-5
179 1,2,3-TRICHLOROBENZENE 673.62 269 000087-61-6
180 TETRACHLOROETHANE 668.57 251 025322-20-7
181 PENTACHLORODIBENZOFURAN 662.00 181 030402-15-4
182 HEXACHLOROETHANE 655.93 171 000067-72-1
183 BUTYL BENZYL PHTHALATE 651.38 170 000085-68-7
184 1,2,4-TRICHLOROBENZENE 648.73 193 000120-82-1
185 CHLOROMETHANE 648.12 172 000074-87-3
186 VANADIUM 633.08 176 007440-62-2
187 TETRACHLORODIBENZO-P-DIOXIN 629.79 175 041903-57-5
188 HEXACHLOROCYCLOPENTADIENE 628.01 107 000077-47-4
189 N-NITROSODIPHENYLAMINE 627.58 178 000086-30-6
190 2-BUTANONE 626.25 168 000078-93-3
191 PENTACHLORODIBENZO-P-DIOXIN 621.28 182 036088-22-9
192 2,3,5,6-TETRACHLOROPHENOL 619.38 NEW 000935-95-5
193 2,3,7,8-TETRACHLORODIBENZOFURAN 616.85 190 051207-31-9
194 ACROLEIN 616.25 165 000107-02-8
195 CHROMIC ACID 612.79 195 007738-94-5
196 SILVER 611.15 185 007440-22-4
197 BROMOFORM 609.55 216 000075-25-2
198 NONACHLOR, TRANS- 608.83 203 039765-80-5
199 1,3-DICHLOROBENZENE 608.33 202 000541-73-1
200 2-CHLOROPHENOL 608.08 211 000095-57-8
201 COAL TAR PITCH 606.23 179 065996-93-2
202 NONACHLOR, CIS- 604.86 213 005103-73-1
203 HYDRAZINE 604.62 177 000302-01-2
204 ARSENIC TRIOXIDE 604.53 188 001327-53-3
205 ARSENIC ACID 603.97 194 007778-39-4
206 PHORATE 603.73 215 000298-02-2
207 2,3,4,7,8-PENTACHLORODIBENZOFURAN 603.41 197 057117-31-4
208 TECHNETIUM-99 603.40 NEW 014133-76-7
209 BROMODICHLOROETHANE 603.16 218 000683-53-4
209 DIMETHOATE 603.16 NEW 000060-51-5
211 NALED 602.92 217 000300-76-5
212 STROBANE 602.85 NEW 008001-50-1
213 ARSINE 602.83 205 007784-42-1
214 4-AMINOBIPHENYL 602.77 138 000092-67-1
214 PYRETHRUM 602.77 NEW 008003-34-7
214 TETRACHLOROBIPHENYL 602.77 200 026914-33-0
217 DIBENZOFURANS, CHLORINATED 602.59 218 042934-53-2
217 NITROGEN DIOXIDE 602.59 224 010102-44-0
217 PHOSPHORODITHIOIC ACID, O-ETHYL S,S-DIPRO 602.59 NEW 013194-48-4
220 CARBOPHENOTHION 602.27 207 000786-19-6
220 THORIUM-234 602.27 NEW 015065-10-8
222 DICHLORVOS 602.03 224 000062-73-7
222 OZONE 602.03 NEW 010028-15-6
224 CARBON-14 601.70 227 014762-75-5
224 MERCURIC CHLORIDE 601.70 200 007487-94-7
224 SODIUM-22 601.70 227 013966-32-0
224 SULFUR-35 601.70 227 015117-53-0
224 URANIUM-233 601.70 209 013968-55-3
229 NITRATE 600.16 214 014797-55-8
230 1,2-DICHLOROETHYLENE 599.52 198 000540-59-0
231 NITRITE 598.92 173 014797-65-0
232 PHENANTHRENE 598.61 199 000085-01-8
233 2,4-DICHLOROPHENOL 597.99 232 000120-83-2
234 DICHLOROBENZENE 585.31 235 025321-22-6
235 FORMALDEHYDE 581.24 237 000050-00-0
236 PYRENE 580.10 238 000129-00-0
237 2,4,5-TRICHLOROPHENOL 580.05 163 000095-95-4
238 2,4-D ACID 579.53 243 000094-75-7
239 CHLORODIBROMOMETHANE 576.44 239 000124-48-1
240 DIMETHYL FORMAMIDE 573.28 NEW 000068-12-2
241 ANTIMONY 572.91 240 007440-36-0
242 CHLOROTOLUENE 572.17 167 025168-05-2
243 SUTAN 570.75 NEW 002008-41-5
244 DICHLOROETHANE 567.26 245 001300-21-6
245 1,3-DICHLOROPROPENE, CIS- 565.36 247 010061-01-5
246 ETHYL ETHER 565.34 244 000060-29-7
247 1,3-DINITROBENZENE 564.86 268 000099-65-0
248 OCTACHLORODIBENZO-P-DIOXIN 558.91 75 003268-87-9
249 FLUORIDE 551.30 246 016984-48-8
250 2,6-DINITROTOLUENE 547.46 249 000606-20-2
251 TRICHLOROBENZENE 547.43 253 012002-48-1
252 4-NITROPHENOL 544.13 252 000100-02-7
253 METHYL ISOBUTYL KETONE 539.85 250 000108-10-1
254 METHYL PARATHION 537.84 257 000298-00-0
255 CRESOL, PARA- 536.97 254 000106-44-5
256 1,2-DICHLOROPROPANE 535.75 233 000078-87-5
257 1,3-DICHLOROPROPENE, TRANS- 534.92 264 010061-02-6
258 STYRENE 532.74 256 000100-42-5
259 METHYL-T-BUTYL ETHER 532.07 255 001634-04-4
260 FLUORENE 527.13 258 000086-73-7
261 SEVIN 522.53 262 000063-25-2
262 1,2,3,4,6,7,8-HEPTACHLORODIBENZO-P-DIOXIN 519.94 184 035822-46-9
263 1-METHYLNAPHTHALENE 519.11 259 000090-12-0
264 TETRACHLORODIBENZOFURAN 517.49 186 030402-14-3
265 ANTHRACENE 516.59 261 000120-12-7
266 DIBENZOTHIOPHENE 513.79 248 000132-65-0
267 MALATHION 513.58 266 000121-75-5
268 1,2,3,4,6,7,8-HEPTACHLORODIBENZOFURAN 511.77 236 067562-39-4
269 HYDROGEN CYANIDE 503.65 NEW 000074-90-8
270 O-XYLENE 503.60 267 000095-47-6
271 1,2,3,7,8-PENTACHLORODIBENZO-P-DIOXIN 503.08 NEW 040321-76-4
271 4-(2,4-DICHLOROPHENOXY)BUTYRIC ACID 503.08 NEW 000094-82-6
271 DICHLOROPROP 503.08 NEW 000120-36-5
274 2,3,4,5-TETRACHLOROPHENOL 502.51 218 004901-51-3
275 PALLADIUM 501.95 224 007440-05-3

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