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2005 ATSDR Substance Priority List

2005 RANK SUBSTANCE NAME TOTAL POINTS 2003 RANK CAS RN
1 ARSENIC 1668.56 1 007440-38-2
2 LEAD 1534.54 2 007439-92-1
3 MERCURY 1507.31 3 007439-97-6
4 VINYL CHLORIDE 1389.02 4 000075-01-4
5 POLYCHLORINATED BIPHENYLS 1371.60 5 001336-36-3
6 BENZENE 1353.53 6 000071-43-2
7 POLYCYCLIC AROMATIC HYDROCARBONS 1321.72 8 130498-29-2
8 CADMIUM 1321.47 7 007440-43-9
9 BENZO(A)PYRENE 1307.76 9 000050-32-8
10 BENZO(B)FLUORANTHENE 1263.06 10 000205-99-2
11 CHLOROFORM 1224.22 11 000067-66-3
12 DDT, P,P'- 1194.95 12 000050-29-3
13 AROCLOR 1254 1182.53 13 011097-69-1
14 AROCLOR 1260 1179.51 14 011096-82-5
15 DIBENZO(A,H)ANTHRACENE 1165.46 15 000053-70-3
16 TRICHLOROETHYLENE 1158.15 16 000079-01-6
17 DIELDRIN 1153.23 18 000060-57-1
18 CHROMIUM, HEXAVALENT 1149.71 17 018540-29-9
19 PHOSPHORUS, WHITE 1144.69 19 007723-14-0
20 DDE, P,P'- 1135.78 21 000072-55-9
21 CHLORDANE 1133.31 20 000057-74-9
22 HEXACHLOROBUTADIENE 1130.66 22 000087-68-3
23 COAL TAR CREOSOTE 1124.08 23 008001-58-9
24 DDD, P,P'- 1121.42 24 000072-54-8
25 ALDRIN 1116.94 26 000309-00-2
26 BENZIDINE 1114.05 25 000092-87-5
27 AROCLOR 1248 1112.19 27 012672-29-6
28 CYANIDE 1098.75 28 000057-12-5
29 AROCLOR 1242 1092.87 29 053469-21-9
30 TOXAPHENE 1086.23 31 008001-35-2
31 TETRACHLOROETHYLENE 1084.88 30 000127-18-4
32 HEXACHLOROCYCLOHEXANE, GAMMA- 1080.42 32 000058-89-9
33 HEPTACHLOR 1070.76 33 000076-44-8
34 1,2-DIBROMOETHANE 1064.58 34 000106-93-4
35 DISULFOTON 1058.74 36 000298-04-4
36 ACROLEIN 1057.72 71 000107-02-8
37 HEXACHLOROCYCLOHEXANE, BETA- 1056.45 37 000319-85-7
38 BENZO(A)ANTHRACENE 1055.63 35 000056-55-3
39 3,3'-DICHLOROBENZIDINE 1051.33 53 000091-94-1
40 BERYLLIUM 1046.48 38 007440-41-7
41 ENDRIN 1040.88 39 000072-20-8
42 HEXACHLOROCYCLOHEXANE, DELTA- 1038.14 40 000319-86-8
43 1,2-DIBROMO-3-CHLOROPROPANE 1035.87 41 000096-12-8
44 HEPTACHLOR EPOXIDE 1028.26 44 001024-57-3
45 PENTACHLOROPHENOL 1024.41 42 000087-86-5
46 CARBON TETRACHLORIDE 1022.74 43 000056-23-5
47 AROCLOR 1221 1018.20 45 011104-28-2
48 AROCLOR 1016 1014.83 46 012674-11-2
49 DDT, O,P'- 1014.65 47 000789-02-6
50 COBALT 1013.95 49 007440-48-4
51 CIS-CHLORDANE 1010.94 50 005103-71-9
52 DI-N-BUTYL PHTHALATE 1005.41 48 000084-74-2
53 ENDOSULFAN SULFATE 1004.89 52 001031-07-8
54 ENDOSULFAN 1004.26 54 000115-29-7
55 NICKEL 1003.95 51 007440-02-0
56 TRANS-CHLORDANE 1002.36 55 005103-74-2
57 DIAZINON 1001.89 114 000333-41-5
58 ENDOSULFAN, ALPHA 1000.76 57 000959-98-8
59 XYLENES, TOTAL 995.32 56 001330-20-7
60 DIBROMOCHLOROPROPANE 994.75 58 067708-83-2
61 METHOXYCHLOR 993.32 59 000072-43-5
62 AROCLOR 991.52 60 012767-79-2
63 BENZO(K)FLUORANTHENE 980.61 61 000207-08-9
64 ENDRIN KETONE 978.86 62 053494-70-5
65 ENDOSULFAN, BETA 976.59 63 033213-65-9
66 CHROMIUM(VI) OXIDE 969.43 64 001333-82-0
67 METHANE 959.56 65 000074-82-8
68 AROCLOR 1232 955.38 67 011141-16-5
69 ENDRIN ALDEHYDE 954.50 66 007421-93-4
70 BENZOFLUORANTHENE 951.23 69 056832-73-6
71 TOLUENE 946.04 68 000108-88-3
72 2-HEXANONE 940.85 70 000591-78-6
73 2,3,7,8-TETRACHLORODIBENZO-P-DIOXIN 937.04 72 001746-01-6
74 ZINC 930.42 73 007440-66-6
75 DIMETHYLARSINIC ACID 921.93 74 000075-60-5
76 DI(2-ETHYLHEXYL)PHTHALATE 918.60 75 000117-81-7
77 CHROMIUM 905.03 76 007440-47-3
78 NAPHTHALENE 895.49 78 000091-20-3
79 1,1-DICHLOROETHENE 894.91 77 000075-35-4
80 AROCLOR 1240 888.03 81 071328-89-7
81 METHYLENE CHLORIDE 886.69 80 000075-09-2
82 2,4,6-TRINITROTOLUENE 879.06 82 000118-96-7
83 BROMODICHLOROETHANE 869.91 86 000683-53-4
84 1,2-DICHLOROETHANE 865.60 87 000107-06-2
85 HYDRAZINE 864.30 88 000302-01-2
86 2,4,6-TRICHLOROPHENOL 863.10 83 000088-06-2
87 2,4-DINITROPHENOL 860.43 85 000051-28-5
88 BIS(2-CHLOROETHYL) ETHER 858.19 89 000111-44-4
89 THIOCYANATE 849.12 90 000302-04-5
90 ASBESTOS 842.16 92 001332-21-4
91 CYCLOTRIMETHYLENETRINITRAMINE (RDX) 840.72 93 000121-82-4
92 CHLORINE 840.04 94 007782-50-5
93 HEXACHLOROBENZENE 838.26 91 000118-74-1
94 RADIUM-226 835.89 98 013982-63-3
95 1,1,1-TRICHLOROETHANE 835.27 95 000071-55-6
96 2,4-DINITROTOLUENE 834.71 96 000121-14-2
97 ETHION 833.95 100 000563-12-2
98 URANIUM 833.16 97 007440-61-1
99 ETHYLBENZENE 830.62 99 000100-41-4
100 RADIUM 827.97 101 007440-14-4
101 THORIUM 825.03 102 007440-29-1
102 4,6-DINITRO-O-CRESOL 822.35 103 000534-52-1
103 1,3,5-TRINITROBENZENE 819.11 106 000099-35-4
104 RADON 818.41 104 010043-92-2
105 CHLOROBENZENE 817.28 108 000108-90-7
106 RADIUM-228 816.58 107 015262-20-1
107 URANIUM-235 814.60 112 015117-96-1
107 THORIUM-230 814.60 109 014269-63-7
109 BARIUM 812.12 110 007440-39-3
110 URANIUM-234 812.01 113 013966-29-5
111 N-NITROSODI-N-PROPYLAMINE 811.01 111 000621-64-7
112 THORIUM-228 810.30 116 014274-82-9
113 FLUORANTHENE 810.29 115 000206-44-0
114 RADON-222 810.23 117 014859-67-7
115 MANGANESE 808.16 131 007439-96-5
116 HEXACHLOROCYCLOHEXANE, ALPHA- 807.72 118 000319-84-6
117 COAL TARS 807.03 124 008007-45-2
118 PLUTONIUM-239 806.68 122 015117-48-3
119 STRONTIUM-90 806.62 120 010098-97-2
119 CHRYSOTILE ASBESTOS 806.62 125 012001-29-5
121 METHYLMERCURY 806.47 119 022967-92-6
122 POLONIUM-210 806.34 120 013981-52-7
123 PLUTONIUM-238 805.93 123 013981-16-3
124 LEAD-210 805.86 126 014255-04-0
125 PLUTONIUM 805.19 128 007440-07-5
125 CHLORPYRIFOS 805.19 127 002921-88-2
127 RADON-220 804.56 129 022481-48-7
128 AMERICIUM-241 804.50 130 086954-36-1
129 AMOSITE ASBESTOS 804.02 176 012172-73-5
130 IODINE-131 803.48 132 010043-66-0
131 TRIBUTYLTIN 803.07 132 000688-73-3
132 HYDROGEN CYANIDE 803.03 134 000074-90-8
133 COPPER 802.60 141 007440-50-8
134 GUTHION 802.32 135 000086-50-0
135 NEPTUNIUM-237 802.11 136 013994-20-2
136 CHLORDECONE 801.63 137 000143-50-0
136 IODINE-129 801.63 137 015046-84-1
136 PLUTONIUM-240 801.63 137 014119-33-6
139 CHRYSENE 799.59 140 000218-01-9
140 S,S,S-TRIBUTYL PHOSPHOROTRITHIOATE 797.81 142 000078-48-8
141 POLYBROMINATED BIPHENYLS 789.01 144 067774-32-7
142 BROMINE 789.01 143 007726-95-6
143 1,2,3-TRICHLOROBENZENE 787.73 151 000087-61-6
144 DICOFOL 787.52 145 000115-32-2
145 PARATHION 784.02 146 000056-38-2
146 1,1,2,2-TETRACHLOROETHANE 778.29 148 000079-34-5
147 SELENIUM 777.65 147 007782-49-2
148 HEXACHLOROCYCLOHEXANE, TECHNICAL GRADE 774.60 149 000608-73-1
149 TRICHLOROFLUOROETHANE 770.66 152 027154-33-2
150 TRIFLURALIN 770.06 153 001582-09-8
151 DDD, O,P'- 768.62 154 000053-19-0
152 4,4'-METHYLENEBIS(2-CHLOROANILINE) 766.59 155 000101-14-4
153 HEXACHLORODIBENZO-P-DIOXIN 760.07 156 034465-46-8
154 HEPTACHLORODIBENZO-P-DIOXIN 754.08 157 037871-00-4
155 PENTACHLOROBENZENE 753.47 158 000608-93-5
156 AMMONIA 744.67 161 007664-41-7
157 2-METHYLNAPHTHALENE 743.90 159 000091-57-6
158 1,1-DICHLOROETHANE 737.82 162 000075-34-3
159 1,4-DICHLOROBENZENE 735.51 164 000106-46-7
160 ACENAPHTHENE 729.63 165 000083-32-9
161 1,2,3,4,6,7,8,9-OCTACHLORODIBENZOFURAN 725.79 167 039001-02-0
162 1,1,2-TRICHLOROETHANE 722.98 163 000079-00-5
163 TRICHLOROETHANE 722.85 166 025323-89-1
164 HEXACHLOROCYCLOPENTADIENE 718.71 168 000077-47-4
165 HEPTACHLORODIBENZOFURAN 718.25 169 038998-75-3
166 1,2-DIPHENYLHYDRAZINE 713.70 170 000122-66-7
167 2,3,4,7,8-PENTACHLORODIBENZOFURAN 710.58 171 057117-31-4
168 TETRACHLOROBIPHENYL 709.14 172 026914-33-0
169 CRESOL, PARA- 706.23 173 000106-44-5
170 OXYCHLORDANE 706.21 174 027304-13-8
171 1,2-DICHLOROBENZENE 703.53 182 000095-50-1
172 GAMMA-CHLORDENE 702.55 84 056641-38-4
173 TETRACHLOROPHENOL 702.38 181 025167-83-3
174 CARBON DISULFIDE 702.31 177 000075-15-0
175 URANIUM-233 701.59 246 013968-55-3
175 AMERICIUM 701.59 178 007440-35-9
177 PALLADIUM 700.60 185 007440-05-3
178 1,2-DICHLOROETHENE, TRANS- 700.56 175 000156-60-5
179 HEXACHLORODIBENZOFURAN 700.27 184 055684-94-1
180 INDENO(1,2,3-CD)PYRENE 698.45 183 000193-39-5
181 ACETONE 693.31 187 000067-64-1
182 CHLOROETHANE 692.77 188 000075-00-3
183 PHENOL 692.66 186 000108-95-2
184 1,3-DICHLOROPROPENE, CIS- 691.06 264 010061-01-5
185 P-XYLENE 689.26 190 000106-42-3
186 ALUMINUM 688.21 194 007429-90-5
187 DIBENZOFURAN 687.80 189 000132-64-9
188 CARBON MONOXIDE 684.41 193 000630-08-0
189 2,4-DIMETHYLPHENOL 684.10 191 000105-67-9
190 TETRACHLOROETHANE 678.08 205 025322-20-7
191 CHLOROMETHANE 674.44 196 000074-87-3
192 PENTACHLORODIBENZOFURAN 672.91 195 030402-15-4
193 HYDROGEN SULFIDE 672.87 197 007783-06-4
194 BIS(2-METHOXYETHYL) PHTHALATE 665.99 198 034006-76-3
195 BUTYL BENZYL PHTHALATE 657.37 200 000085-68-7
196 CRESOL, ORTHO- 657.19 199 000095-48-7
197 2,3,5,6-TETRACHLOROPHENOL 654.88 201 000935-95-5
198 VANADIUM 653.47 203 007440-62-2
199 HEXACHLOROETHANE 652.73 202 000067-72-1
200 N-NITROSODIMETHYLAMINE 650.41 150 000062-75-9
201 1,3-BUTADIENE 647.46 204 000106-99-0
202 BROMOFORM 644.75 207 000075-25-2
203 1,2,4-TRICHLOROBENZENE 644.17 206 000120-82-1
204 TETRACHLORODIBENZO-P-DIOXIN 635.43 208 041903-57-5
205 1,3-DICHLOROBENZENE 630.23 209 000541-73-1
206 1,2-DICHLOROETHYLENE 625.60 213 000540-59-0
207 PENTACHLORODIBENZO-P-DIOXIN 624.88 212 036088-22-9
208 N-NITROSODIPHENYLAMINE 623.80 211 000086-30-6
209 2-BUTANONE 622.18 214 000078-93-3
210 2,3,7,8-TETRACHLORODIBENZOFURAN 621.90 216 051207-31-9
211 DICHLOROBENZENE 620.70 260 025321-22-6
212 2,4-DICHLOROPHENOL 615.86 210 000120-83-2
213 SILVER 613.48 218 007440-22-4
214 FLUORINE 613.10 NEW 007782-41-4
215 1,4-DIOXANE 612.78 NEW 000123-91-1
216 NITRITE 612.49 220 014797-65-0
217 CESIUM-137 612.35 217 010045-97-3
218 CHROMIUM TRIOXIDE 610.71 221 007738-94-5
219 NITRATE 609.85 222 014797-55-8
220 POTASSIUM-40 608.80 224 013966-00-2
221 DINITROTOLUENE 607.58 223 025321-14-6
222 ANTIMONY 606.30 230 007440-36-0
223 THORIUM-227 605.32 225 015623-47-9
224 COAL TAR PITCH 605.25 226 065996-93-2
225 2,4,5-TRICHLOROPHENOL 604.44 228 000095-95-4
226 ARSENIC ACID 604.40 227 007778-39-4
227 ARSENIC TRIOXIDE 604.30 229 001327-53-3
228 PHORATE 603.07 231 000298-02-2
229 CRESOLS 603.02 250 001319-77-3
230 BENZOPYRENE 602.97 236 073467-76-2
231 CHLORDANE, TECHNICAL 602.60 NEW 012789-03-6
232 DIMETHOATE 602.59 233 000060-51-5
233 STROBANE 602.54 234 008001-50-1
233 ACTINIUM-227 602.54 234 014952-40-0
235 PYRETHRUM 602.49 236 008003-34-7
235 4-AMINOBIPHENYL 602.49 236 000092-67-1
237 ARSINE 602.39 239 007784-42-1
238 NALED 602.32 240 000300-76-5
239 ETHOPROP 602.11 241 013194-48-4
239 DIBENZOFURANS, CHLORINATED 602.11 241 042934-53-2
241 ALPHA-CHLORDENE 601.91 243 056534-02-2
241 CARBOPHENOTHION 601.91 243 000786-19-6
243 DICHLORVOS 601.63 245 000062-73-7
244 SODIUM ARSENITE 601.43 NEW 007784-46-5
244 CALCIUM ARSENATE 601.43 246 007778-44-1
244 MERCURIC CHLORIDE 601.43 246 007487-94-7
247 FORMALDEHYDE 599.22 251 000050-00-0
248 2-CHLOROPHENOL 598.90 219 000095-57-8
249 PHENANTHRENE 595.25 249 000085-01-8
250 HYDROGEN FLUORIDE 587.88 253 007664-39-3
251 2,4-D ACID 584.13 252 000094-75-7
252 DIBROMOCHLOROMETHANE 580.41 255 000124-48-1
253 DIURON 579.09 NEW 000330-54-1
254 BUTYLATE 578.36 257 002008-41-5
255 DIMETHYL FORMAMIDE 578.04 258 000068-12-2
256 PYRENE 575.34 259 000129-00-0
257 ETHYL ETHER 572.10 261 000060-29-7
258 DICHLOROETHANE 570.47 262 001300-21-6
259 4-NITROPHENOL 566.05 263 000100-02-7
260 PHOSPHINE 559.64 265 007803-51-2
261 TRICHLOROBENZENE 558.13 266 012002-48-1
262 2,6-DINITROTOLUENE 554.50 267 000606-20-2
263 FLUORIDE ION 549.16 269 016984-48-8
264 1,2,3,4,6,7,8-HEPTACHLORODIBENZO-P-DIOXIN 547.70 270 035822-46-9
265 METHYL PARATHION 545.71 271 000298-00-0
266 PENTAERYTHRITOL TETRANITRATE 545.49 NEW 000078-11-5
267 1,3-DICHLOROPROPENE, TRANS- 545.07 268 010061-02-6
268 BIS(2-ETHYLHEXYL)ADIPATE 540.08 273 000103-23-1
269 CARBAZOLE 535.41 272 000086-74-8
270 1,2-DICHLOROETHENE, CIS- 532.34 NEW 000156-59-2
271 METHYL ISOBUTYL KETONE 531.89 274 000108-10-1
272 STYRENE 531.08 275 000100-42-5
273 CARBARYL 530.91 NEW 000063-25-2
274 1,2,3,4,6,7,8-HEPTACHLORODIBENZOFURAN 529.28 NEW 067562-39-4
275 ACRYLONITRILE 528.09 NEW 000107-13-1

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