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2003 ATSDR Substance Priority List

2003 RANK SUBSTANCE NAME TOTAL POINTS 2001 RANK CAS RN
1 ARSENIC 1663.11 1 007440-38-2
2 LEAD 1531.60 2 007439-92-1
3 MERCURY 1506.66 3 007439-97-6
4 VINYL CHLORIDE 1385.32 4 000075-01-4
5 POLYCHLORINATED BIPHENYLS 1372.92 5 001336-36-3
6 BENZENE 1356.30 6 000071-43-2
7 CADMIUM 1319.32 7 007440-43-9
8 POLYCYCLIC AROMATIC HYDROCARBONS 1317.54 9 130498-29-2
9 BENZO(A)PYRENE 1308.71 8 000050-32-8
10 BENZO(B)FLUORANTHENE 1265.26 10 000205-99-2
11 CHLOROFORM 1228.08 11 000067-66-3
12 DDT, P,P'- 1191.57 12 000050-29-3
13 AROCLOR 1254 1186.98 13 011097-69-1
14 AROCLOR 1260 1176.90 14 011096-82-5
15 DIBENZO(A,H)ANTHRACENE 1163.45 16 000053-70-3
16 TRICHLOROETHYLENE 1161.43 15 000079-01-6
17 CHROMIUM, HEXAVALENT 1151.98 18 018540-29-9
18 DIELDRIN 1148.09 17 000060-57-1
19 PHOSPHORUS, WHITE 1144.87 24 007723-14-0
20 CHLORDANE 1130.53 19 000057-74-9
21 DDE, P,P'- 1130.20 21 000072-55-9
22 HEXACHLOROBUTADIENE 1129.10 20 000087-68-3
23 COAL TAR CREOSOTE 1124.66 22 008001-58-9
24 DDD, P,P'- 1117.38 26 000072-54-8
25 BENZIDINE 1114.82 25 000092-87-5
26 ALDRIN 1111.73 23 000309-00-2
27 AROCLOR 1248 1110.73 27 012672-29-6
28 CYANIDE 1101.40 28 000057-12-5
29 AROCLOR 1242 1095.84 29 053469-21-9
30 TETRACHLOROETHYLENE 1086.31 32 000127-18-4
31 TOXAPHENE 1085.57 31 008001-35-2
32 HEXACHLOROCYCLOHEXANE, GAMMA- 1079.78 33 000058-89-9
33 HEPTACHLOR 1067.53 30 000076-44-8
34 1,2-DIBROMOETHANE 1063.22 36 000106-93-4
35 BENZO(A)ANTHRACENE 1057.49 34 000056-55-3
36 DISULFOTON 1057.16 37 000298-04-4
37 HEXACHLOROCYCLOHEXANE, BETA- 1053.64 35 000319-85-7
38 BERYLLIUM 1044.41 38 007440-41-7
39 ENDRIN 1040.83 40 000072-20-8
40 HEXACHLOROCYCLOHEXANE, DELTA- 1037.91 39 000319-86-8
41 1,2-DIBROMO-3-CHLOROPROPANE 1034.99 41 000096-12-8
42 PENTACHLOROPHENOL 1026.93 43 000087-86-5
43 CARBON TETRACHLORIDE 1024.44 44 000056-23-5
44 HEPTACHLOR EPOXIDE 1023.70 42 001024-57-3
45 AROCLOR 1221 1016.86 46 011104-28-2
46 AROCLOR 1016 1014.42 48 012674-11-2
47 DDT, O,P'- 1013.41 50 000789-02-6
48 DI-N-BUTYL PHTHALATE 1011.31 47 000084-74-2
49 COBALT 1010.49 49 007440-48-4
50 CIS-CHLORDANE 1008.91 51 005103-71-9
51 NICKEL 1006.33 53 007440-02-0
52 ENDOSULFAN SULFATE 1006.02 52 001031-07-8
53 3,3'-DICHLOROBENZIDINE 1004.22 55 000091-94-1
54 ENDOSULFAN 1003.81 54 000115-29-7
55 TRANS-CHLORDANE 1001.83 57 005103-74-2
56 XYLENES, TOTAL 1000.92 56 001330-20-7
57 ENDOSULFAN, ALPHA 996.61 45 000959-98-8
58 DIBROMOCHLOROPROPANE 993.57 59 067708-83-2
59 METHOXYCHLOR 991.86 58 000072-43-5
60 AROCLOR 989.88 61 012767-79-2
61 BENZO(K)FLUORANTHENE 984.26 60 000207-08-9
62 ENDRIN KETONE 979.42 62 053494-70-5
63 ENDOSULFAN, BETA 975.58 63 033213-65-9
64 CHROMIUM(VI) OXIDE 967.84 65 001333-82-0
65 METHANE 959.39 66 000074-82-8
66 ENDRIN ALDEHYDE 954.77 69 007421-93-4
67 AROCLOR 1232 954.26 67 011141-16-5
68 TOLUENE 951.64 68 000108-88-3
69 BENZOFLUORANTHENE 949.82 70 056832-73-6
70 2-HEXANONE 943.72 71 000591-78-6
71 ACROLEIN 941.24 72 000107-02-8
72 2,3,7,8-TETRACHLORODIBENZO-P-DIOXIN 938.30 64 001746-01-6
73 ZINC 929.40 73 007440-66-6
74 DIMETHYLARSINIC ACID 920.42 74 000075-60-5
75 DI(2-ETHYLHEXYL)PHTHALATE 919.65 75 000117-81-7
76 CHROMIUM 907.31 76 007440-47-3
77 1,1-DICHLOROETHENE 896.92 79 000075-35-4
78 NAPHTHALENE 896.68 77 000091-20-3
79 AROCLOR 1262 893.33 NEW 037324-23-5
80 METHYLENE CHLORIDE 888.52 78 000075-09-2
81 AROCLOR 1240 886.53 80 071328-89-7
82 2,4,6-TRINITROTOLUENE 877.53 81 000118-96-7
83 2,4,6-TRICHLOROPHENOL 875.06 87 000088-06-2
84 GAMMA-CHLORDENE 869.56 175 056641-38-4
85 2,4-DINITROPHENOL 868.88 83 000051-28-5
86 BROMODICHLOROETHANE 868.28 84 000683-53-4
87 1,2-DICHLOROETHANE 868.24 82 000107-06-2
88 HYDRAZINE 862.68 86 000302-01-2
89 BIS(2-CHLOROETHYL) ETHER 858.22 85 000111-44-4
90 THIOCYANATE 847.54 88 000302-04-5
91 HEXACHLOROBENZENE 844.79 100 000118-74-1
92 ASBESTOS 843.81 89 001332-21-4
93 CYCLOTRIMETHYLENETRINITRAMINE (RDX) 840.67 92 000121-82-4
94 CHLORINE 838.86 96 007782-50-5
95 1,1,1-TRICHLOROETHANE 838.61 90 000071-55-6
96 2,4-DINITROTOLUENE 834.45 101 000121-14-2
97 URANIUM 834.01 94 007440-61-1
98 RADIUM-226 833.83 95 013982-63-3
99 ETHYLBENZENE 833.62 91 000100-41-4
100 ETHION 832.47 97 000563-12-2
101 RADIUM 828.32 98 007440-14-4
102 THORIUM 825.74 99 007440-29-1
103 4,6-DINITRO-O-CRESOL 824.39 93 000534-52-1
104 RADON 818.59 104 010043-92-2
105 PENTACHLOROBIPHENYL 817.89 NEW 025429-29-2
106 1,3,5-TRINITROBENZENE 817.85 111 000099-35-4
107 RADIUM-228 815.49 107 015262-20-1
108 CHLOROBENZENE 815.45 105 000108-90-7
109 THORIUM-230 814.97 108 014269-63-7
110 BARIUM 814.90 102 007440-39-3
111 N-NITROSODI-N-PROPYLAMINE 814.43 112 000621-64-7
112 URANIUM-235 813.99 109 015117-96-1
113 URANIUM-234 812.53 113 013966-29-5
114 DIAZINON 812.35 114 000333-41-5
115 FLUORANTHENE 811.22 106 000206-44-0
116 THORIUM-228 809.61 115 014274-82-9
117 RADON-222 809.58 116 014859-67-7
118 HEXACHLOROCYCLOHEXANE, ALPHA- 807.65 110 000319-84-6
119 METHYLMERCURY 807.18 120 022967-92-6
120 POLONIUM-210 806.51 121 013981-52-7
120 STRONTIUM-90 806.51 118 010098-97-2
122 PLUTONIUM-239 806.47 123 015117-48-3
123 PLUTONIUM-238 806.29 124 013981-16-3
124 COAL TARS 806.25 122 008007-45-2
125 CHRYSOTILE ASBESTOS 806.06 119 012001-29-5
126 LEAD-210 806.02 126 014255-04-0
127 CHLORPYRIFOS 805.80 125 002921-88-2
128 PLUTONIUM 804.83 131 007440-07-5
129 RADON-220 804.75 128 022481-48-7
130 AMERICIUM-241 804.12 127 086954-36-1
131 MANGANESE 804.07 138 007439-96-5
132 IODINE-131 803.59 130 010043-66-0
132 TRIBUTYLTIN 803.59 135 000688-73-3
134 HYDROGEN CYANIDE 803.09 139 000074-90-8
135 GUTHION 802.39 134 000086-50-0
136 NEPTUNIUM-237 802.17 132 013994-20-2
137 PLUTONIUM-240 801.68 135 014119-33-6
137 IODINE-129 801.68 NEW 015046-84-1
137 CHLORDECONE 801.68 135 000143-50-0
140 CHRYSENE 801.36 117 000218-01-9
141 COPPER 799.94 129 007440-50-8
142 S,S,S-TRIBUTYL PHOSPHOROTRITHIOATE 796.31 140 000078-48-8
143 BROMINE 787.63 141 007726-95-6
144 POLYBROMINATED BIPHENYLS 787.58 142 067774-32-7
145 DICOFOL 786.09 143 000115-32-2
146 PARATHION 782.82 145 000056-38-2
147 SELENIUM 781.84 144 007782-49-2
148 1,1,2,2-TETRACHLOROETHANE 781.51 103 000079-34-5
149 HEXACHLOROCYCLOHEXANE, TECH. GRADE 773.58 146 000608-73-1
150 N-NITROSODIMETHYLAMINE 772.84 237 000062-75-9
151 1,2,3-TRICHLOROBENZENE 771.10 148 000087-61-6
152 TRICHLOROFLUOROETHANE 769.24 149 027154-33-2
153 TRIFLURALIN 768.72 150 001582-09-8
154 DDD, O,P'- 767.80 152 000053-19-0
155 4,4'-METHYLENEBIS(2-CHLOROANILINE) 765.16 151 000101-14-4
156 HEXACHLORODIBENZO-P-DIOXIN 759.10 153 034465-46-8
157 HEPTACHLORODIBENZO-P-DIOXIN 753.17 154 037871-00-4
158 PENTACHLOROBENZENE 751.95 147 000608-93-5
159 2-METHYLNAPHTHALENE 750.45 155 000091-57-6
160 NITROGEN DIOXIDE 747.82 233 010102-44-0
161 AMMONIA 746.01 160 007664-41-7
162 1,1-DICHLOROETHANE 741.30 156 000075-34-3
163 1,1,2-TRICHLOROETHANE 732.35 157 000079-00-5
164 1,4-DICHLOROBENZENE 731.32 161 000106-46-7
165 ACENAPHTHENE 730.35 158 000083-32-9
166 TRICHLOROETHANE 724.42 164 025323-89-1
167 1,2,3,4,6,7,8,9-OCTACHLORODIBENZOFURAN 723.92 159 039001-02-0
168 HEXACHLOROCYCLOPENTADIENE 718.28 165 000077-47-4
169 HEPTACHLORODIBENZOFURAN 717.32 163 038998-75-3
170 1,2-DIPHENYLHYDRAZINE 712.62 166 000122-66-7
171 2,3,4,7,8-PENTACHLORODIBENZOFURAN 709.06 171 057117-31-4
172 TETRACHLOROBIPHENYL 707.33 168 026914-33-0
173 CRESOL, PARA- 707.09 169 000106-44-5
174 OXYCHLORDANE 706.99 170 027304-13-8
175 1,2-DICHLOROETHENE, TRANS- 703.86 167 000156-60-5
176 AMOSITE ASBESTOS 703.57 133 012172-73-5
177 CARBON DISULFIDE 703.21 174 000075-15-0
178 AMERICIUM 701.63 176 007440-35-9
178 HEPTACHLOROBIPHENYL 701.63 NEW 028655-71-2
178 PENTACHLOROBUTADIENE 701.63 NEW 055880-77-8
181 TETRACHLOROPHENOL 700.97 179 025167-83-3
182 1,2-DICHLOROBENZENE 700.89 178 000095-50-1
183 INDENO(1,2,3-CD)PYRENE 700.86 180 000193-39-5
184 HEXACHLORODIBENZOFURAN 699.32 172 055684-94-1
185 PALLADIUM 699.31 173 007440-05-3
186 PHENOL 698.68 162 000108-95-2
187 ACETONE 694.90 181 000067-64-1
188 CHLOROETHANE 693.46 182 000075-00-3
189 DIBENZOFURAN 691.84 177 000132-64-9
190 P-XYLENE 688.75 183 000106-42-3
191 2,4-DIMETHYLPHENOL 688.14 184 000105-67-9
192 AROCLOR 1268 684.90 185 011100-14-4
193 CARBON MONOXIDE 684.55 198 000630-08-0
194 ALUMINUM 684.18 186 007429-90-5
195 PENTACHLORODIBENZOFURAN 672.51 188 030402-15-4
196 CHLOROMETHANE 670.70 190 000074-87-3
197 HYDROGEN SULFIDE 669.09 187 007783-06-4
198 BIS(2-METHOXYETHYL) PHTHALATE 664.55 191 034006-76-3
199 CRESOL, ORTHO- 659.90 194 000095-48-7
200 BUTYL BENZYL PHTHALATE 654.16 192 000085-68-7
201 2,3,5,6-TETRACHLOROPHENOL 653.47 NEW 000935-95-5
202 HEXACHLOROETHANE 652.52 196 000067-72-1
203 VANADIUM 649.17 197 007440-62-2
204 1,3-BUTADIENE 646.15 195 000106-99-0
205 TETRACHLOROETHANE 645.45 189 025322-20-7
206 1,2,4-TRICHLOROBENZENE 645.08 193 000120-82-1
207 BROMOFORM 644.88 208 000075-25-2
208 TETRACHLORODIBENZO-P-DIOXIN 635.17 199 041903-57-5
209 1,3-DICHLOROBENZENE 629.76 200 000541-73-1
210 2,4-DICHLOROPHENOL 627.78 206 000120-83-2
211 N-NITROSODIPHENYLAMINE 625.10 205 000086-30-6
212 PENTACHLORODIBENZO-P-DIOXIN 624.58 201 036088-22-9
213 1,2-DICHLOROETHYLENE 624.12 202 000540-59-0
214 2-BUTANONE 622.63 204 000078-93-3
215 DIBENZOTHIOPHENE 621.60 NEW 000132-65-0
216 2,3,7,8-TETRACHLORODIBENZOFURAN 621.18 203 051207-31-9
217 CESIUM-137 611.86 209 010045-97-3
218 SILVER 611.75 207 007440-22-4
219 2-CHLOROPHENOL 611.10 247 000095-57-8
220 NITRITE 611.03 212 014797-65-0
221 CHROMIUM TRIOXIDE 610.93 211 007738-94-5
222 NITRATE 608.36 216 014797-55-8
223 DINITROTOLUENE 607.75 213 025321-14-6
224 POTASSIUM-40 607.52 214 013966-00-2
225 THORIUM-227 605.50 217 015623-47-9
226 COAL TAR PITCH 605.35 218 065996-93-2
227 ARSENIC ACID 604.46 223 007778-39-4
228 2,4,5-TRICHLOROPHENOL 604.39 210 000095-95-4
229 ARSENIC TRIOXIDE 604.38 220 001327-53-3
230 ANTIMONY 603.25 222 007440-36-0
231 PHORATE 603.14 224 000298-02-2
231 DICHLOROPROP 603.14 NEW 000120-36-5
233 DIMETHOATE 602.66 225 000060-51-5
234 STROBANE 602.58 226 008001-50-1
234 ACTINIUM-227 602.58 226 014952-40-0
236 PYRETHRUM 602.52 228 008003-34-7
236 BENZOPYRENE 602.52 228 073467-76-2
236 4-AMINOBIPHENYL 602.52 228 000092-67-1
239 ARSINE 602.43 231 007784-42-1
240 NALED 602.39 232 000300-76-5
241 ETHOPROP 602.17 233 013194-48-4
241 DIBENZOFURANS, CHLORINATED 602.17 233 042934-53-2
243 ALPHA-CHLORDENE 601.95 240 056534-02-2
243 CARBOPHENOTHION 601.95 236 000786-19-6
245 DICHLORVOS 601.68 237 000062-73-7
246 MERCURIC CHLORIDE 601.46 240 007487-94-7
246 URANIUM-233 601.46 240 013968-55-3
246 CALCIUM ARSENATE 601.46 240 007778-44-1
249 PHENANTHRENE 601.21 219 000085-01-8
250 CRESOLS 597.09 244 001319-77-3
251 FORMALDEHYDE 593.74 245 000050-00-0
252 2,4-D ACID 590.62 246 000094-75-7
253 HYDROGEN FLUORIDE 586.62 248 007664-39-3
254 2-CHLOROANILINE 579.79 NEW 000095-51-2
255 CHLORODIBROMOMETHANE 578.89 250 000124-48-1
256 1,2,3-TRICHLOROPROPANE 577.92 NEW 000096-18-4
257 BUTYLATE 576.87 252 002008-41-5
258 DIMETHYL FORMAMIDE 576.44 255 000068-12-2
259 PYRENE 575.91 249 000129-00-0
260 DICHLOROBENZENE 575.01 251 025321-22-6
261 ETHYL ETHER 571.53 254 000060-29-7
262 DICHLOROETHANE 570.15 253 001300-21-6
263 4-NITROPHENOL 568.88 256 000100-02-7
264 1,3-DICHLOROPROPENE, CIS- 562.26 257 010061-01-5
265 PHOSPHINE 557.97 260 007803-51-2
266 TRICHLOROBENZENE 555.37 258 012002-48-1
267 2,6-DINITROTOLUENE 554.09 263 000606-20-2
268 1,3-DICHLOROPROPENE, TRANS- 551.34 259 010061-02-6
269 FLUORIDE ION 549.11 261 016984-48-8
270 1,2,3,4,6,7,8-HEPTACHLORODIBENZO-P-DIOXIN 545.71 271 035822-46-9
271 METHYL PARATHION 544.47 262 000298-00-0
272 CARBAZOLE 539.38 266 000086-74-8
273 BIS(2-ETHYLHEXYL)ADIPATE 538.73 NEW 000103-23-1
274 METHYL ISOBUTYL KETONE 533.15 264 000108-10-1
275 STYRENE 530.25 265 000100-42-5

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