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2007 ATSDR Substance Priority List

2007 RANK SUBSTANCE NAME TOTAL POINTS 2005 RANK CAS RN
1 ARSENIC 1672.58 1 007440-38-2
2 LEAD 1534.07 2 007439-92-1
3 MERCURY 1504.69 3 007439-97-6
4 VINYL CHLORIDE 1387.75 4 000075-01-4
5 POLYCHLORINATED BIPHENYLS 1365.78 5 001336-36-3
6 BENZENE 1355.96 6 000071-43-2
7 CADMIUM 1324.22 8 007440-43-9
8 POLYCYCLIC AROMATIC HYDROCARBONS 1316.98 7 130498-29-2
9 BENZO(A)PYRENE 1312.45 9 000050-32-8
10 BENZO(B)FLUORANTHENE 1266.55 10 000205-99-2
11 CHLOROFORM 1223.03 11 000067-66-3
12 DDT, P,P'- 1193.36 12 000050-29-3
13 AROCLOR 1254 1182.63 13 011097-69-1
14 AROCLOR 1260 1177.77 14 011096-82-5
15 DIBENZO(A,H)ANTHRACENE 1165.88 15 000053-70-3
16 TRICHLOROETHYLENE 1154.73 16 000079-01-6
17 DIELDRIN 1150.91 17 000060-57-1
18 CHROMIUM, HEXAVALENT 1149.98 18 018540-29-9
19 PHOSPHORUS, WHITE 1144.77 19 007723-14-0
20 CHLORDANE 1133.21 21 000057-74-9
21 DDE, P,P'- 1132.49 20 000072-55-9
22 HEXACHLOROBUTADIENE 1129.63 22 000087-68-3
23 COAL TAR CREOSOTE 1124.32 23 008001-58-9
24 ALDRIN 1117.22 25 000309-00-2
25 DDD, P,P'- 1114.83 24 000072-54-8
26 BENZIDINE 1114.24 26 000092-87-5
27 AROCLOR 1248 1112.20 27 012672-29-6
28 CYANIDE 1099.48 28 000057-12-5
29 AROCLOR 1242 1093.14 29 053469-21-9
30 AROCLOR 1091.52 62 012767-79-2
31 TOXAPHENE 1086.65 30 008001-35-2
32 HEXACHLOROCYCLOHEXANE, GAMMA- 1081.63 32 000058-89-9
33 TETRACHLOROETHYLENE 1080.43 31 000127-18-4
34 HEPTACHLOR 1072.67 33 000076-44-8
35 1,2-DIBROMOETHANE 1064.06 34 000106-93-4
36 HEXACHLOROCYCLOHEXANE, BETA- 1060.22 37 000319-85-7
37 ACROLEIN 1059.07 36 000107-02-8
38 DISULFOTON 1058.85 35 000298-04-4
39 BENZO(A)ANTHRACENE 1057.96 38 000056-55-3
40 3,3'-DICHLOROBENZIDINE 1051.61 39 000091-94-1
41 ENDRIN 1048.57 41 000072-20-8
42 BERYLLIUM 1046.12 40 007440-41-7
43 HEXACHLOROCYCLOHEXANE, DELTA- 1038.27 42 000319-86-8
44 1,2-DIBROMO-3-CHLOROPROPANE 1035.55 43 000096-12-8
45 PENTACHLOROPHENOL 1028.01 45 000087-86-5
46 HEPTACHLOR EPOXIDE 1027.12 44 001024-57-3
47 CARBON TETRACHLORIDE 1023.32 46 000056-23-5
48 AROCLOR 1221 1018.41 47 011104-28-2
49 COBALT 1015.57 50 007440-48-4
50 DDT, O,P'- 1014.71 49 000789-02-6
51 AROCLOR 1016 1014.33 48 012674-11-2
52 DI-N-BUTYL PHTHALATE 1007.49 52 000084-74-2
53 NICKEL 1005.40 55 007440-02-0
54 ENDOSULFAN 1004.65 54 000115-29-7
55 ENDOSULFAN SULFATE 1003.56 53 001031-07-8
56 DIAZINON 1002.08 57 000333-41-5
57 ENDOSULFAN, ALPHA 1001.30 58 000959-98-8
58 XYLENES, TOTAL 996.07 59 001330-20-7
59 CIS-CHLORDANE 995.08 51 005103-71-9
60 DIBROMOCHLOROPROPANE 994.87 60 067708-83-2
61 METHOXYCHLOR 994.47 61 000072-43-5
62 BENZO(K)FLUORANTHENE 981.26 63 000207-08-9
63 ENDRIN KETONE 978.99 64 053494-70-5
64 TRANS-CHLORDANE 973.99 56 005103-74-2
65 CHROMIUM(VI) OXIDE 969.58 66 001333-82-0
66 METHANE 959.78 67 000074-82-8
67 ENDOSULFAN, BETA 959.19 65 033213-65-9
68 AROCLOR 1232 955.64 68 011141-16-5
69 ENDRIN ALDEHYDE 954.86 69 007421-93-4
70 BENZOFLUORANTHENE 951.48 70 056832-73-6
71 TOLUENE 947.50 71 000108-88-3
72 2-HEXANONE 942.02 72 000591-78-6
73 2,3,7,8-TETRACHLORODIBENZO-P-DIOXIN 938.11 73 001746-01-6
74 ZINC 932.89 74 007440-66-6
75 DIMETHYLARSINIC ACID 922.06 75 000075-60-5
76 DI(2-ETHYLHEXYL)PHTHALATE 919.02 76 000117-81-7
77 CHROMIUM 908.52 77 007440-47-3
78 NAPHTHALENE 896.67 78 000091-20-3
79 1,1-DICHLOROETHENE 891.19 79 000075-35-4
80 METHYLENE CHLORIDE 888.96 81 000075-09-2
81 AROCLOR 1240 888.11 80 071328-89-7
82 2,4,6-TRINITROTOLUENE 883.59 82 000118-96-7
83 BROMODICHLOROETHANE 870.00 83 000683-53-4
84 HYDRAZINE 864.41 85 000302-01-2
85 1,2-DICHLOROETHANE 863.99 84 000107-06-2
86 2,4,6-TRICHLOROPHENOL 863.71 86 000088-06-2
87 2,4-DINITROPHENOL 860.45 87 000051-28-5
88 BIS(2-CHLOROETHYL) ETHER 859.88 88 000111-44-4
89 THIOCYANATE 849.21 89 000302-04-5
90 ASBESTOS 841.54 90 001332-21-4
91 CHLORINE 840.37 92 007782-50-5
92 CYCLOTRIMETHYLENETRINITRAMINE (RDX) 840.28 91 000121-82-4
93 HEXACHLOROBENZENE 838.34 93 000118-74-1
94 2,4-DINITROTOLUENE 837.88 96 000121-14-2
95 RADIUM-226 835.93 94 013982-63-3
96 ETHION 834.03 97 000563-12-2
97 1,1,1-TRICHLOROETHANE 833.81 95 000071-55-6
98 URANIUM 833.41 98 007440-61-1
99 ETHYLBENZENE 832.13 99 000100-41-4
100 RADIUM 828.07 100 007440-14-4
101 THORIUM 825.17 101 007440-29-1
102 4,6-DINITRO-O-CRESOL 822.78 102 000534-52-1
103 1,3,5-TRINITROBENZENE 820.17 103 000099-35-4
104 CHLOROBENZENE 819.69 105 000108-90-7
105 RADON 817.89 104 010043-92-2
106 RADIUM-228 816.76 106 015262-20-1
107 THORIUM-230 814.72 107 014269-63-7
107 URANIUM-235 814.72 107 015117-96-1
109 BARIUM 813.46 109 007440-39-3
110 FLUORANTHENE 812.40 113 000206-44-0
111 URANIUM-234 812.11 110 013966-29-5
112 N-NITROSODI-N-PROPYLAMINE 811.05 111 000621-64-7
113 THORIUM-228 810.36 112 014274-82-9
114 RADON-222 809.78 114 014859-67-7
115 HEXACHLOROCYCLOHEXANE, ALPHA- 809.56 116 000319-84-6
116 1,2,3-TRICHLOROBENZENE 808.41 143 000087-61-6
117 MANGANESE 807.90 115 007439-96-5
118 COAL TARS 807.07 117 008007-45-2
119 CHRYSOTILE ASBESTOS 806.68 119 012001-29-5
119 STRONTIUM-90 806.68 119 010098-97-2
121 PLUTONIUM-239 806.67 118 015117-48-3
122 POLONIUM-210 806.39 122 013981-52-7
123 METHYLMERCURY 806.39 121 022967-92-6
124 PLUTONIUM-238 806.01 123 013981-16-3
125 LEAD-210 805.90 124 014255-04-0
126 PLUTONIUM 805.23 125 007440-07-5
127 CHLORPYRIFOS 804.93 125 002921-88-2
128 COPPER 804.86 133 007440-50-8
129 AMERICIUM-241 804.55 128 086954-36-1
130 RADON-220 804.54 127 022481-48-7
131 AMOSITE ASBESTOS 804.07 129 012172-73-5
132 IODINE-131 803.48 130 010043-66-0
133 HYDROGEN CYANIDE 803.08 132 000074-90-8
134 TRIBUTYLTIN 802.61 131 000688-73-3
135 GUTHION 802.32 134 000086-50-0
136 NEPTUNIUM-237 802.13 135 013994-20-2
137 CHRYSENE 802.10 139 000218-01-9
138 CHLORDECONE 801.64 136 000143-50-0
138 IODINE-129 801.64 136 015046-84-1
138 PLUTONIUM-240 801.64 136 014119-33-6
141 S,S,S-TRIBUTYL PHOSPHOROTRITHIOATE 797.88 140 000078-48-8
142 BROMINE 789.15 142 007726-95-6
143 POLYBROMINATED BIPHENYLS 789.11 141 067774-32-7
144 DICOFOL 787.56 144 000115-32-2
145 PARATHION 784.14 145 000056-38-2
146 1,1,2,2-TETRACHLOROETHANE 782.15 146 000079-34-5
147 SELENIUM 778.98 147 007782-49-2
148 HEXACHLOROCYCLOHEXANE, TECHNICAL GRADE 774.91 148 000608-73-1
149 TRICHLOROFLUOROETHANE 770.74 149 027154-33-2
150 TRIFLURALIN 770.12 150 001582-09-8
151 DDD, O,P'- 768.73 151 000053-19-0
152 4,4'-METHYLENEBIS(2-CHLOROANILINE) 766.66 152 000101-14-4
153 HEXACHLORODIBENZO-P-DIOXIN 760.42 153 034465-46-8
154 HEPTACHLORODIBENZO-P-DIOXIN 754.47 154 037871-00-4
155 PENTACHLOROBENZENE 753.58 155 000608-93-5
156 1,3-BUTADIENE 747.31 201 000106-99-0
157 AMMONIA 745.55 156 007664-41-7
158 2-METHYLNAPHTHALENE 743.24 157 000091-57-6
159 1,4-DICHLOROBENZENE 737.32 159 000106-46-7
160 1,1-DICHLOROETHANE 736.23 158 000075-34-3
161 ACENAPHTHENE 731.25 160 000083-32-9
162 1,2,3,4,6,7,8,9-OCTACHLORODIBENZOFURAN 726.14 161 039001-02-0
163 1,1,2-TRICHLOROETHANE 724.96 162 000079-00-5
164 TRICHLOROETHANE 723.32 163 025323-89-1
165 HEXACHLOROCYCLOPENTADIENE 719.01 164 000077-47-4
166 HEPTACHLORODIBENZOFURAN 718.58 165 038998-75-3
167 1,2-DIPHENYLHYDRAZINE 713.90 166 000122-66-7
168 2,3,4,7,8-PENTACHLORODIBENZOFURAN 710.71 167 057117-31-4
169 TETRACHLOROBIPHENYL 709.21 168 026914-33-0
170 CRESOL, PARA- 707.83 169 000106-44-5
171 OXYCHLORDANE 706.32 170 027304-13-8
172 1,2-DICHLOROBENZENE 704.91 171 000095-50-1
173 1,2-DICHLOROETHENE, TRANS- 704.04 178 000156-60-5
174 INDENO(1,2,3-CD)PYRENE 703.30 180 000193-39-5
175 GAMMA-CHLORDENE 702.59 172 056641-38-4
176 CARBON DISULFIDE 702.55 174 000075-15-0
177 TETRACHLOROPHENOL 702.54 173 025167-83-3
178 AMERICIUM 701.62 175 007440-35-9
178 URANIUM-233 701.62 175 013968-55-3
180 PALLADIUM 700.66 177 007440-05-3
181 HEXACHLORODIBENZOFURAN 700.56 179 055684-94-1
182 PHENOL 696.96 183 000108-95-2
183 CHLOROETHANE 693.90 182 000075-00-3
184 ACETONE 693.31 181 000067-64-1
185 P-XYLENE 690.20 185 000106-42-3
186 DIBENZOFURAN 689.19 187 000132-64-9
187 ALUMINUM 688.13 186 007429-90-5
188 2,4-DIMETHYLPHENOL 685.76 189 000105-67-9
189 CARBON MONOXIDE 684.49 188 000630-08-0
190 TETRACHLOROETHANE 677.97 190 025322-20-7
191 HYDROGEN SULFIDE 676.51 193 007783-06-4
192 PENTACHLORODIBENZOFURAN 673.21 192 030402-15-4
193 CHLOROMETHANE 670.19 191 000074-87-3
194 BIS(2-METHOXYETHYL) PHTHALATE 666.08 194 034006-76-3
195 BUTYL BENZYL PHTHALATE 659.38 195 000085-68-7
196 CRESOL, ORTHO- 658.66 196 000095-48-7
197 HEXACHLOROETHANE 653.10 199 000067-72-1
198 VANADIUM 651.70 198 007440-62-2
199 N-NITROSODIMETHYLAMINE 650.71 200 000062-75-9
200 1,2,4-TRICHLOROBENZENE 647.30 203 000120-82-1
201 BROMOFORM 643.53 202 000075-25-2
202 TETRACHLORODIBENZO-P-DIOXIN 635.74 204 041903-57-5
203 1,3-DICHLOROBENZENE 631.41 205 000541-73-1
204 PENTACHLORODIBENZO-P-DIOXIN 625.12 207 036088-22-9
205 N-NITROSODIPHENYLAMINE 624.79 208 000086-30-6
206 1,2-DICHLOROETHYLENE 622.49 206 000540-59-0
207 2,3,7,8-TETRACHLORODIBENZOFURAN 622.15 210 051207-31-9
208 2-BUTANONE 620.01 209 000078-93-3
209 2,4-DICHLOROPHENOL 616.45 212 000120-83-2
210 1,4-DIOXANE 616.29 215 000123-91-1
211 FLUORINE 613.28 214 007782-41-4
212 NITRITE 612.64 216 014797-65-0
213 CESIUM-137 612.50 217 010045-97-3
214 SILVER 612.19 213 007440-22-4
215 CHROMIUM TRIOXIDE 610.85 218 007738-94-5
216 NITRATE 610.66 219 014797-55-8
217 POTASSIUM-40 608.91 220 013966-00-2
218 DINITROTOLUENE 607.65 221 025321-14-6
219 ANTIMONY 605.37 222 007440-36-0
220 COAL TAR PITCH 605.33 224 065996-93-2
221 THORIUM-227 605.32 223 015623-47-9
222 2,4,5-TRICHLOROPHENOL 604.83 225 000095-95-4
223 ARSENIC ACID 604.45 226 007778-39-4
224 ARSENIC TRIOXIDE 604.36 227 001327-53-3
225 PHORATE 603.10 228 000298-02-2
226 BENZOPYRENE 603.00 230 073467-76-2
227 CRESOLS 602.74 229 001319-77-3
228 CHLORDANE, TECHNICAL 602.62 231 012789-03-6
229 DIMETHOATE 602.61 232 000060-51-5
230 ACTINIUM-227 602.57 233 014952-40-0
230 STROBANE 602.57 233 008001-50-1
232 4-AMINOBIPHENYL 602.51 235 000092-67-1
232 PYRETHRUM 602.51 235 008003-34-7
234 ARSINE 602.42 237 007784-42-1
235 NALED 602.32 238 000300-76-5
236 DIBENZOFURANS, CHLORINATED 602.13 239 042934-53-2
236 ETHOPROP 602.13 239 013194-48-4
238 ALPHA-CHLORDENE 601.94 241 056534-02-2
238 CARBOPHENOTHION 601.94 241 000786-19-6
240 DICHLORVOS 601.64 243 000062-73-7
241 CALCIUM ARSENATE 601.45 244 007778-44-1
241 MERCURIC CHLORIDE 601.45 244 007487-94-7
241 SODIUM ARSENITE 601.45 244 007784-46-5
244 FORMALDEHYDE 599.64 247 000050-00-0
245 2-CHLOROPHENOL 599.62 248 000095-57-8
246 PHENANTHRENE 597.68 249 000085-01-8
247 HYDROGEN FLUORIDE 588.03 250 007664-39-3
248 2,4-D ACID 584.47 251 000094-75-7
249 DIBROMOCHLOROMETHANE 580.59 252 000124-48-1
250 DIURON 579.16 253 000330-54-1
251 BUTYLATE 578.43 254 002008-41-5
252 DIMETHYL FORMAMIDE 578.23 255 000068-12-2
253 PYRENE 577.95 256 000129-00-0
254 DICHLOROBENZENE 577.70 211 025321-22-6
255 ETHYL ETHER 572.47 257 000060-29-7
256 DICHLOROETHANE 570.46 258 001300-21-6
257 4-NITROPHENOL 567.79 259 000100-02-7
258 1,3-DICHLOROPROPENE, CIS- 561.82 184 010061-01-5
259 PHOSPHINE 559.74 260 007803-51-2
260 TRICHLOROBENZENE 557.96 261 012002-48-1
261 2,6-DINITROTOLUENE 555.20 262 000606-20-2
262 FLUORIDE ION 549.64 263 016984-48-8
263 1,2,3,4,6,7,8-HEPTACHLORODIBENZO-P-DIOXIN 547.90 264 035822-46-9
264 METHYL PARATHION 545.83 265 000298-00-0
265 PENTAERYTHRITOL TETRANITRATE 545.59 266 000078-11-5
266 1,3-DICHLOROPROPENE, TRANS- 543.37 267 010061-02-6
267 BIS(2-ETHYLHEXYL)ADIPATE 540.20 268 000103-23-1
268 CARBAZOLE 534.52 269 000086-74-8
269 METHYL ISOBUTYL KETONE 533.24 271 000108-10-1
270 1,2-DICHLOROETHENE, CIS- 533.15 270 000156-59-2
271 STYRENE 532.70 272 000100-42-5
272 CARBARYL 530.98 273 000063-25-2
273 1,2,3,4,6,7,8-HEPTACHLORODIBENZOFURAN 529.45 274 067562-39-4
274 ACRYLONITRILE 528.28 275 000107-13-1
275 1-METHYLNAPHTHALENE 526.51 NEW  

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