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2015 ATSDR Substance Priority List

2015 RANK SUBSTANCE NAME TOTAL POINTS 2013 RANK CAS RN
1 ARSENIC 1671.6 1 007440-38-2
2 LEAD 1529.4 2 007439-92-1
3 MERCURY 1458.6 3 007439-97-6
4 VINYL CHLORIDE 1358.9 4 000075-01-4
5 POLYCHLORINATED BIPHENYLS 1345.1 5 001336-36-3
6 BENZENE 1327.6 6 000071-43-2
7 CADMIUM 1318.8 7 007440-43-9
8 BENZO(A)PYRENE 1304.4 8 000050-32-8
9 POLYCYCLIC AROMATIC HYDROCARBONS 1279.1 9 130498-29-2
10 BENZO(B)FLUORANTHENE 1249.7 10 000205-99-2
11 CHLOROFORM 1202.4 11 000067-66-3
12 AROCLOR 1260 1190.0 12 011096-82-5
13 DDT, P,P’- 1182.0 13 000050-29-3
14 AROCLOR 1254 1171.3 14 011097-69-1
15 DIBENZO(A,H)ANTHRACENE 1155.6 15 000053-70-3
16 TRICHLOROETHYLENE 1153.4 16 000079-01-6
17 CHROMIUM, HEXAVALENT 1146.8 17 018540-29-9
18 DIELDRIN 1142.9 18 000060-57-1
19 PHOSPHORUS, WHITE 1141.3 19 007723-14-0
20 HEXACHLOROBUTADIENE 1128.2 20 000087-68-3
21 DDE, P,P’- 1125.9 21 000072-55-9
22 CHLORDANE 1125.6 22 000057-74-9
23 AROCLOR 1242 1124.7 24 053469-21-9
24 COAL TAR CREOSOTE 1124.4 23 008001-58-9
25 ALDRIN 1114.6 25 000309-00-2
26 DDD, P,P’- 1113.1 26 000072-54-8
27 AROCLOR 1248 1104.5 27 012672-29-6
28 HEPTACHLOR 1100.6 28 000076-44-8
29 AROCLOR 1099.5 29 012767-79-2
30 BENZIDINE 1091.2 30 000092-87-5
31 ACROLEIN 1088.5 31 000107-02-8
32 TOXAPHENE 1087.8 32 008001-35-2
33 TETRACHLOROETHYLENE 1076.7 33 000127-18-4
34 HEXACHLOROCYCLOHEXANE, GAMMA- 1075.1 34 000058-89-9
35 CYANIDE 1069.8 35 000057-12-5
36 HEXACHLOROCYCLOHEXANE, BETA- 1053.4 36 000319-85-7
37 DISULFOTON 1047.2 38 000298-04-4
38 BENZO(A)ANTHRACENE 1046.0 38 000056-55-3
39 1,2-DIBROMOETHANE 1041.7 39 000106-93-4
40 ENDRIN 1037.6 40 000072-20-8
41 DIAZINON 1036.6 41 000333-41-5
42 HEXACHLOROCYCLOHEXANE, DELTA- 1034.8 42 000319-86-8
43 BERYLLIUM 1031.0 43 007440-41-7
44 ENDOSULFAN 1027.7 44 000115-29-7
45 AROCLOR 1221 1027.0 45 011104-28-2
46 1,2-DIBROMO-3-CHLOROPROPANE 1025.7 46 000096-12-8
47 HEPTACHLOR EPOXIDE 1020.7 47 001024-57-3
48 ENDOSULFAN, ALPHA 1018.0 48 000959-98-8
49 CIS-CHLORDANE 1015.6 49 005103-71-9
50 CARBON TETRACHLORIDE 1012.1 50 000056-23-5
51 COBALT 1012.0 51 007440-48-4
52 AROCLOR 1016 1011.5 52 012674-11-2
53 DDT, O,P’- 1007.8 53 000789-02-6
54 PENTACHLOROPHENOL 1007.2 54 000087-86-5
55 METHOXYCHLOR 1005.9 55 000072-43-5
56 ENDOSULFAN SULFATE 1003.3 56 001031-07-8
57 NICKEL 995.7 57 007440-02-0
58 DI-N-BUTYL PHTHALATE 994.6 58 000084-74-2
59 ENDRIN KETONE 991.6 59 053494-70-5
60 DIBROMOCHLOROPROPANE 982.9 60 067708-83-2
61 BENZO(K)FLUORANTHENE 969.8 61 000207-08-9
62 TRANS-CHLORDANE 967.7 62 005103-74-2
63 ENDOSULFAN, BETA 967.1 63 033213-65-9
64 XYLENES, TOTAL 964.6 64 001330-20-7
65 CHLORPYRIFOS 963.8 65 002921-88-2
66 CHROMIUM(VI) TRIOXIDE 960.0 66 001333-82-0
67 AROCLOR 1232 957.9 67 011141-16-5
68 ENDRIN ALDEHYDE 957.4 68 007421-93-4
69 METHANE 952.7 69 000074-82-8
70 3,3′-DICHLOROBENZIDINE 940.4 70 000091-94-1
71 2-HEXANONE 940.2 71 000591-78-6
72 2,3,7,8-TETRACHLORODIBENZO-P-DIOXIN 939.8 72 001746-01-6
73 BENZOFLUORANTHENE 935.6 73 056832-73-6
74 TOLUENE 917.9 74 000108-88-3
75 ZINC 915.5 75 007440-66-6
76 PENTACHLOROBENZENE 906.8 76 000608-93-5
77 DI(2-ETHYLHEXYL)PHTHALATE 905.0 77 000117-81-7
78 CHROMIUM 895.6 78 007440-47-3
79 AROCLOR 1240 888.3 79 071328-89-7
80 NAPHTHALENE 877.4 80 000091-20-3
81 2,4,6-TRINITROTOLUENE 877.4 81 000118-96-7
82 1,1-DICHLOROETHENE 875.8 82 000075-35-4
83 BROMODICHLOROETHANE 866.3 83 000683-53-4
84 2,4,6-TRICHLOROPHENOL 866.0 84 000088-06-2
85 BIS(2-CHLOROETHYL) ETHER 865.9 85 000111-44-4
86 DDD, O,P’- 865.7 86 000053-19-0
87 HYDRAZINE 860.9 87 000302-01-2
88 METHYLENE CHLORIDE 860.0 88 000075-09-2
89 2,4-DINITROPHENOL 858.1 89 000051-28-5
90 4,4′-METHYLENEBIS(2-CHLOROANILINE) 857.3 90 000101-14-4
91 1,2-DICHLOROETHANE 852.7 91 000107-06-2
92 THIOCYANATE 845.9 92 000302-04-5
93 HEXACHLOROBENZENE 843.5 93 000118-74-1
94 ASBESTOS 840.8 94 001332-21-4
95 RADIUM-226 832.8 95 013982-63-3
96 RDX (Cyclonite) 831.9 96 000121-82-4
97 URANIUM 831.3 97 007440-61-1
98 2,4-DINITROTOLUENE 830.7 98 000121-14-2
99 ETHION 829.9 99 000563-12-2
100 RADIUM 827.2 100 007440-14-4
101 4,6-DINITRO-O-CRESOL 827.0 101 000534-52-1
102 THORIUM 823.9 102 007440-29-1
103 DIMETHYLARSINIC ACID 821.2 103 000075-60-5
104 CHLORINE 820.3 104 007782-50-5
105 1,3,5-TRINITROBENZENE 818.5 105 000099-35-4
106 RADON 818.3 106 010043-92-2
107 HEXACHLOROCYCLOHEXANE, ALPHA- 815.5 107 000319-84-6
108 RADIUM-228 815.1 108 015262-20-1
109 THORIUM-230 813.6 109 014269-63-7
110 URANIUM-235 812.0 110 015117-96-1
111 THORIUM-228 810.1 111 014274-82-9
112 URANIUM-234 809.5 112 013966-29-5
113 RADON-222 809.2 113 014859-67-7
114 COAL TARS 808.0 115 008007-45-2
115 METHYLMERCURY 807.8 116 022967-92-6
116 1,1,1-TRICHLOROETHANE 807.6 114 000071-55-6
117 N-NITROSODI-N-PROPYLAMINE 807.1 117 000621-64-7
118 COPPER 806.5 118 007440-50-8
119 CHRYSOTILE ASBESTOS 806.1 119 012001-29-5
120 PLUTONIUM-239 805.9 120 015117-48-3
121 POLONIUM-210 805.5 121 013981-52-7
122 PLUTONIUM-238 805.2 122 013981-16-3
123 LEAD-210 805.0 123 014255-04-0
124 AMOSITE ASBESTOS 804.2 125 012172-73-5
124 PLUTONIUM 804.2 125 007440-07-5
124 STRONTIUM-90 804.2 125 010098-97-2
127 RADON-220 804.1 128 022481-48-7
128 CHLOROBENZENE 803.9 124 000108-90-7
129 AMERICIUM-241 803.8 129 086954-36-1
130 ETHYLBENZENE 802.8 130 000100-41-4
131 AZINPHOS-METHYL 802.5 132 000086-50-0
132 BARIUM 802.1 131 007440-39-3
133 CHLORDECONE 802.1 133 000143-50-0
134 NEPTUNIUM-237 801.9 134 013994-20-2
135 HYDROGEN CYANIDE 801.7 135 000074-90-8
136 PLUTONIUM-240 801.4 136 014119-33-6
137 1,2,3-TRICHLOROBENZENE 800.1 137 000087-61-6
138 FLUORANTHENE 799.6 138 000206-44-0
139 MANGANESE 798.3 139 007439-96-5
140 S,S,S-TRIBUTYL PHOSPHOROTRITHIOATE 797.6 140 000078-48-8
141 CHRYSENE 791.3 141 000218-01-9
142 2,4,5-TRICHLOROPHENOL 790.3 142 000095-95-4
143 POLYBROMINATED BIPHENYLS 784.2 143 067774-32-7
144 DICOFOL 783.8 144 000115-32-2
145 SELENIUM 775.9 145 007782-49-2
146 1,1,2,2-TETRACHLOROETHANE 775.6 146 000079-34-5
147 HEPTACHLORODIBENZO-P-DIOXIN 773.4 147 037871-00-4
148 PARATHION 773.3 148 000056-38-2
149 HEXACHLOROCYCLOHEXANE, TECHNICAL GRADE 772.9 149 000608-73-1
150 TRICHLOROFLUOROETHANE 772.3 150 027154-33-2
151 BROMINE 770.0 151 007726-95-6
152 AROCLOR 1268 764.4 152 011100-14-4
153 1,3-BUTADIENE 760.9 153 000106-99-0
154 HEPTACHLORODIBENZOFURAN 755.2 154 038998-75-3
155 TRIFLURALIN 754.2 155 001582-09-8
156 1,2,3,4,6,7,8,9-OCTACHLORODIBENZOFURAN 742.6 156 039001-02-0
157 AMMONIA 741.1 157 007664-41-7
158 2-METHYLNAPHTHALENE 726.5 158 000091-57-6
159 2,3,4,7,8-PENTACHLORODIBENZOFURAN 723.3 160 057117-31-4
160 1,4-DICHLOROBENZENE 723.2 159 000106-46-7
161 1,1-DICHLOROETHANE 721.8 161 000075-34-3
162 NALED 720.4 162 000300-76-5
163 1,1,2-TRICHLOROETHANE 719.3 163 000079-00-5
164 HEXACHLOROCYCLOPENTADIENE 717.9 164 000077-47-4
165 1,2-DIPHENYLHYDRAZINE 717.6 165 000122-66-7
166 PHORATE 715.0 166 000298-02-2
167 TRICHLOROETHANE 712.1 167 025323-89-1
168 ACENAPHTHENE 710.0 168 000083-32-9
169 TETRACHLOROBIPHENYL 709.1 169 026914-33-0
170 OXYCHLORDANE 705.4 170 027304-13-8
171 PALLADIUM 705.3 171 007440-05-3
172 CRESOL, PARA- 703.0 172 000106-44-5
173 GAMMA-CHLORDENE 701.9 173 056641-38-4
174 INDENO(1,2,3-CD)PYRENE 701.9 174 000193-39-5
175 TETRACHLOROPHENOL 696.9 175 025167-83-3
176 1,2-DICHLOROBENZENE 696.4 176 000095-50-1
177 1,2-DICHLOROETHENE, TRANS- 691.7 177 000156-60-5
178 CHLOROETHANE 687.0 178 000075-00-3
179 ALUMINUM 686.0 179 007429-90-5
180 P-XYLENE 685.9 181 000106-42-3
181 PHENOL 685.7 180 000108-95-2
182 CARBON MONOXIDE 682.3 182 000630-08-0
183 CARBON DISULFIDE 681.6 183 000075-15-0
184 2,4-DIMETHYLPHENOL 679.0 184 000105-67-9
185 DIBENZOFURAN 675.5 185 000132-64-9
186 ACETONE 672.6 186 000067-64-1
187 HEXACHLOROETHANE 669.2 187 000067-72-1
188 BUTYL METHYL PHTHALATE 667.4 188 034006-76-3
189 CHLOROMETHANE 664.8 189 000074-87-3
190 HEXACHLORODIBENZOFURAN 659.7 190 055684-94-1
191 BUTYL BENZYL PHTHALATE 657.3 191 000085-68-7
192 HYDROGEN SULFIDE 656.2 192 007783-06-4
193 DICHLORVOS 655.3 193 000062-73-7
194 DIBENZOFURANS, CHLORINATED 652.8 194 042934-53-2
195 CRESOL, ORTHO- 652.2 195 000095-48-7
196 HEXACHLORODIBENZO-P-DIOXIN 651.2 196 034465-46-8
197 VANADIUM 649.8 197 007440-62-2
198 N-NITROSODIMETHYLAMINE 648.2 198 000062-75-9
199 1,2,4-TRICHLOROBENZENE 646.3 199 000120-82-1
200 ETHOPROP 643.4 200 013194-48-4
201 TETRACHLORODIBENZO-P-DIOXIN 641.0 201 041903-57-5
202 BROMOFORM 634.2 202 000075-25-2
203 PENTACHLORODIBENZOFURAN 631.2 203 030402-15-4
204 1,3-DICHLOROBENZENE 627.6 204 000541-73-1
205 PENTACHLORODIBENZO-P-DIOXIN 625.4 205 036088-22-9
206 N-NITROSODIPHENYLAMINE 624.6 206 000086-30-6
207 2,3,7,8-TETRACHLORODIBENZOFURAN 618.7 207 051207-31-9
208 2,4-DICHLOROPHENOL 618.0 208 000120-83-2
209 2,3-DIMETHYLNAPHTHALENE 617.6 209 000581-40-8
210 1,4-DIOXANE 614.8 210 000123-91-1
211 FLUORINE 613.2 211 007782-41-4
212 CESIUM-137 609.9 212 010045-97-3
212 CHROMIC ACID 609.9 212 007738-94-5
214 NITRITE 608.9 214 014797-65-0
215 2-BUTANONE 607.9 215 000078-93-3
216 1,2-DICHLOROETHYLENE 607.6 216 000540-59-0
217 POTASSIUM-40 607.5 217 013966-00-2
218 DINITROTOLUENE 607.2 218 025321-14-6
219 COAL TAR PITCH 605.2 220 065996-93-2
220 SILVER 604.9 219 007440-22-4
221 THORIUM-227 604.9 222 015623-47-9
222 NITRATE 604.9 221 014797-55-8
223 ARSENIC ACID 604.3 223 007778-39-4
224 FORMALDEHYDE 604.2 224 000050-00-0
225 ARSENIC TRIOXIDE 603.8 225 001327-53-3
226 BENZOPYRENE 603.4 226 073467-76-2
227 CHLORDANE, TECHNICAL 602.5 227 012789-03-6
228 STROBANE 602.5 228 008001-50-1
229 4-AMINOBIPHENYL 602.4 229 000092-67-1
229 PYRETHRUM 602.4 229 008003-34-7
231 ARSINE 602.4 231 007784-42-1
232 DIMETHOATE 602.4 231 000060-51-5
233 BIS(CHLOROMETHYL) ETHER 601.9 New 000542-88-1
233 CARBOPHENOTHION 601.9 233 000786-19-6
235 ALPHA-CHLORDENE 601.4 234 056534-02-2
235 IODINE-131 601.4 234 010043-66-0
235 MERCURIC CHLORIDE 601.4 234 007487-94-7
235 SODIUM ARSENITE 601.4 234 007784-46-5
235 URANIUM-233 601.4 234 013968-55-3
240 ANTIMONY 601.0 239 007440-36-0
241 DIBROMOCHLOROMETHANE 599.4 240 000124-48-1
242 CRESOLS 596.7 241 001319-77-3
243 DICHLOROBENZENE 594.8 242 025321-22-6
244 2,4-D ACID 594.3 243 000094-75-7
245 2-CHLOROPHENOL 590.5 244 000095-57-8
246 BUTYLATE 589.9 245 002008-41-5
247 DIMETHYL FORMAMIDE 585.2 247 000068-12-2
248 PHENANTHRENE 584.7 246 000085-01-8
249 4-NITROPHENOL 579.3 248 000100-02-7
250 DIURON 578.7 249 000330-54-1
251 TETRACHLOROETHANE 576.4 250 025322-20-7
252 DICHLOROETHANE 567.3 251 001300-21-6
253 ETHYL ETHER 564.9 252 000060-29-7
254 DIMETHYLANILINE 561.7 253 000121-69-7
255 PYRENE 560.9 254 000129-00-0
256 1,3-DICHLOROPROPENE, CIS- 560.5 255 010061-01-5
257 1,2,3,4,6,7,8-HEPTACHLORODIBENZO-P-DIOXIN 558.6 256 035822-46-9
258 PHOSPHINE 555.3 257 007803-51-2
259 TRICHLOROBENZENE 554.8 258 012002-48-1
260 2,6-DINITROTOLUENE 554.0 259 000606-20-2
261 FLUORIDE ION 548.9 260 016984-48-8
262 1,2,3,4,6,7,8-HEPTACHLORODIBENZOFURAN 548.5 261 067562-39-4
263 PENTAERYTHRITOL TETRANITRATE 548.1 262 000078-11-5
264 1,3-DICHLOROPROPENE, TRANS- 547.6 263 010061-02-6
265 ACRYLONITRILE 543.0 264 000107-13-1
266 BIS(2-ETHYLHEXYL)ADIPATE 542.3 265 000103-23-1
267 1,2-DICHLOROETHENE, CIS- 540.8 271 000156-59-2
268 CARBAZOLE 539.8 266 000086-74-8
269 METOLACHLOR 538.2 267 051218-45-2
270 2-CHLOROANILINE 538.0 268 000095-51-2
271 1,2,3-TRICHLOROPROPANE 535.9 269 000096-18-4
272 CARBARYL 535.4 270 000063-25-2
273 STYRENE 527.9 272 000100-42-5
274 METHYL ISOBUTYL KETONE 527.3 273 000108-10-1
275 THALLIUM 524.5 274 007440-28-0
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