40 CFR Part 258, Appendix II to Part 258 - List of Hazardous Inorganic and Organic Constituents

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View PDF at GPO Pt. 258, App. II
Appendix II to Part 258—List of Hazardous Inorganic and Organic Constituents
Common name 1 CAS RN 2 Chemical abstracts service index name 3
1 Common names are those widely used in government regulations, scientific publications, and commerce; synonyms exist for many chemicals.
2 Chemical Abstracts Service registry number. Where “Total” is entered, all species in the ground water that contain this element are included.
3 CAS index names are those used in the 9th Cumulative Index.
4 This substance is often called bis(2-chloroisopropyl) ether, the name Chemical Abstracts Service applies to its noncommercial isomer, propane, 2,2″-oxybis[2-chloro-(CAS RN 39638-32-9).
5 Chlordane: This entry includes alpha-chlordane (CAS RN 5103-71-9), beta-chlordane (CAS RN 5103-74-2), gamma-chlordane (CAS RN 5566-34-7), and constituents of chlordane (CAS RN 57-74-9 and CAS RN 12789-03-6).
6 Polychlorinated biphenyls (CAS RN 1336-36-3); this category contains congener chemicals, including constituents of Aroclor-1016 (CAS RN 12674-11-2), Aroclor-1221 (CAS RN 11104-28-2), Aroclor-1232 (CAS RN 11141-16-5), Aroclor-1242 (CAS RN 53469-21-9), Aroclor-1248 (CAS RN 12672-29-6), Aroclor-1254 (CAS RN 11097-69-1), and Aroclor-1260 (CAS RN 11096-82-5).
7 Toxaphene: This entry includes congener chemicals contained in technical toxaphene (CAS RN 8001-35-2), i.e., chlorinated camphene.
8 Xylene (total): This entry includes o-xylene (CAS RN 96-47-6), m-xylene (CAS RN 108-38-3), p-xylene (CAS RN 106-42-3), and unspecified xylenes (dimethylbenzenes) (CAS RN 1330-20-7).
Acenaphthene 83-32-9 Acenaphthylene, 1,2-dihydro-
Acenaphthylene 208-96-8 Acenaphthylene
Acetone 67-64-1 2-Propanone
Acetonitrile; Methyl cyanide 75-05-8 Acetonitrile
Acetophenone 98-86-2 Ethanone, 1-phenyl-
2-Acetylaminofluorene; 2-AAF 53-96-3 Acetamide, N-9H-fluoren-2-yl-
Acrolein 107-02-8 2-Propenal
Acrylonitrile 107-13-1 2-Propenenitrile
Aldrin 309-00-2 1,4:5,8-Dimethanonaphthalene, 1,2,3,4,10,10-hexachloro-1,4,4a,5,8,8a-hexahydro-(1,4,4a,5,8,8a)-
Allyl chloride 107-05-1 1-Propene, 3-chloro-
4-Aminobiphenyl 92-67-1 [1,1′-Biphenyl]-4-amine
Anthracene 120-12-7 Anthracene
Antimony (Total) Antimony
Arsenic (Total) Arsenic
Barium (Total) Barium
Benzene 71-43-2 Benzene
Benzo[a]anthracene; Benzanthracene 56-55-3 Benz[a]anthracene
Benzo[b]fluoranthene 205-99-2 Benz[e]acephenanthrylene
Benzo[k]fluoranthene 207-08-9 Benzo[k]fluoranthene
Benzo[ghi]perylene 191-24-2 Benzo[ghi]perylene
Benzo[a]pyrene 50-32-8 Benzo[a]pyrene
Benzyl alcohol 100-51-6 Benzenemethanol
Beryllium (Total) Beryllium
alpha-BHC 319-84-6 Cyclohexane, 1,2,3,4,5,6-hexachloro-,(1α,2α,3β,4α,5β,6β)-
beta-BHC 319-85-7 Cyclohexane, 1,2,3,4,5,6-hexachloro-,(1α,2β,3α,4β,5α,6β)-
delta-BHC 319-86-8 Cyclohexane, 1,2,3,4,5,6-hexachloro-,(1α,2α,3α,4β,5α,6β)-
gamma-BHC; Lindane 58-89-9 Cyclohexane, 1,2,3,4,5,6- hexachloro-,(1α,2α, 3β, 4α,5α,6β)-
Bis(2-chloroethoxy)methane 111-91-1 Ethane, 1,1′-[methylenebis (oxy)]bis [2-chloro-
Bis(2-chloroethyl)ether; Dichloroethyl ether 111-44-4 Ethane, 1,1′-oxybis[2-chloro-
Bis(2-chloro-1-methylethyl) ether; 2,2′-Dichlorodiisopropyl ether; DCIP, See footnote 4 108-60-1 Propane, 2,2′-oxybis[1-chloro-
Bis(2-ethylhexyl) phthalate 117-81-7 1,2-Benzenedicarboxylic acid, bis(2-ethylhexyl)ester
Bromochloromethane; Chlorobromethane 74-97-5 Methane, bromochloro-
Bromodichloromethane; Dibromochloromethane 75-27-4 Methane, bromodichloro-
Bromoform; Tribromomethane 75-25-2 Methane, tribromo-
4-Bromophenyl phenyl ether 101-55-3 Benzene, 1-bromo-4-phenoxy-
Butyl benzyl phthalate; Benzyl butyl phthalate 85-68-7 1,2-Benzenedicarboxylic acid, butyl phenylmethyl ester
Cadmium (Total) Cadmium
Carbon disulfide 75-15-0 Carbon disulfide
Carbon tetrachloride 56-23-5 Methane, tetrachloro-
Chlordane See footnote 5 4,7-Methano-1H-indene, 1,2,4,5,6,7,8,8-octachloro-2,3,3a,4,7,7a-hexahydro-
p-Chloroaniline 106-47-8 Benzenamine, 4-chloro-
Chlorobenzene 108-90-7 Benzene, chloro-
Chlorobenzilate 510-15-6 Benzeneacetic acid, 4-chloro--(4-chlorophenyl)- -hydroxy-, ethyl ester.
p-Chloro-m-cresol; 4-Chloro-3-methylphenol 59-50-7 Phenol, 4-chloro-3-methyl-
Chloroethane; Ethyl chloride 75-00-3 Ethane, chloro-
Chloroform; Trichloromethane 67-66-3 Methane, trichloro-
2-Chloronaphthalene 91-58-7 Naphthalene, 2-chloro-
2-Chlorophenol 95-57-8 Phenol, 2-chloro-
4-Chlorophenyl phenyl ether 7005-72-3 Benzene, 1-chloro-4-phenoxy-
Chloroprene 126-99-8 1,3-Butadiene, 2-chloro-
Chromium (Total) Chromium
Chrysene 218-01-9 Chrysene
Cobalt (Total) Cobalt
Copper (Total) Copper
m-Cresol; 3-Methylphenol 108-39-4 Phenol, 3-methyl-
o-Cresol; 2-Methylphenol 95-48-7 Phenol, 2-methyl-
p-Cresol; 4-Methylphenol 106-44-5 Phenol, 4-methyl-
Cyanide 57-12-5 Cyanide
2,4-D; 2,4-Dichlorophenoxyacetic acid 94-75-7 Acetic acid, (2,4-dichlorophenoxy)-
4,4′-DDD 72-54-8 Benzene 1,1′-(2,2-dichloroethylidene) bis[4-chloro-
4,4′-DDE 72-55-9 Benzene, 1,1′-(dichloroethenylidene) bis[4-chloro-
4,4′-DDT 50-29-3 Benzene, 1,1′-(2,2,2-trichloroethylidene) bis[4-chloro-
Diallate 2303-16-4 Carbamothioic acid, bis(1-methylethyl)-, S- (2,3-dichloro-2-propenyl) ester.
Dibenz[a,h]anthracene 53-70-3 Dibenz[a,h]anthracene
Dibenzofuran 132-64-9 Dibenzofuran
Dibromochloromethane; Chlorodibromomethane 124-48-1 Methane, dibromochloro-
1,2-Dibromo-3-chloropropane; DBCP 96-12-8 Propane, 1,2-dibromo-3-chloro-
1,2-Dibromoethane; Ethylene dibromide; EDB 106-93-4 Ethane, 1,2-dibromo-
Di-n-butyl phthalate 84-74-2 1,2-Benzenedicarboxylic acid, dibutyl ester
o-Dichlorobenzene; 1,2-Dichlorobenzene 95-50-1 Benzene, 1,2-dichloro-
m-Dichlorobenzene; 1,3-Dichlorobenzene 541-73-1 Benzene, 1,3-dichloro-
p-Dichlorobenzene; 1,4-Dichlorobenzene 106-46-7 Benzene, 1,4-dichloro-
3,3′-Dichlorobenzidine 91-94-1 [1,1′-Biphenyl]-4,4′-diamine, 3,3′-dichloro-
trans-1,4-Dichloro-2-butene 110-57-6 2-Butene, 1,4-dichloro-, (E)-
Dichlorodifluoromethane; CFC 12 75-71-8 Methane, dichlorodifluoro-
1,1-Dichloroethane; Ethyldidene chloride 75-34-3 Ethane, 1,1-dichloro-
1,2-Dichloroethane; Ethylene dichloride 107-06-2 Ethane, 1,2-dichloro-
1,1-Dichloroethylene; 1,1-Dichloroethene; 75-35-4 Ethene, 1,1-dichloro-
Vinylidene chloride cis-1,2-Dichloroethylene; cis-1,2-Dichloroethene 156-59-2 Ethene, 1,2-dichloro-(Z)-
trans-1,2-Dichloroethylene; trans-1,2-Dichloroethene 156-60-5 Ethene, 1,2-dichloro-, (E)-
2,4-Dichlorophenol 120-83-2 Phenol, 2,4-dichloro-
2,6-Dichlorophenol 87-65-0 Phenol, 2,6-dichloro-
1,2-Dichloropropane 78-87-5 Propane, 1,2-dichloro-
1,3-Dichloropropane; Trimethylene dichloride 142-28-9 Propane, 1,3-dichloro-
2,2-Dichloropropane; Isopropylidene chloride 594-20-7 Propane, 2,2-dichloro-
1,1-Dichloropropene 563-58-6 1-Propene, 1,1-dichloro-
cis-1,3-Dichloropropene 10061-01-5 1-Propene, 1,3-dichloro-, (Z)-
trans-1,3-Dichloropropene 10061-02-6 1-Propene, 1,3-dichloro-, (E)-
Dieldrin 60-57-1 2,7:3,6-Dimethanonaphth [2,3-b]oxirene, 3,4,5,6,9,9-hexachloro-1a,2,2a,3,6,6a,7,7a-octahydro-, (1aα,2β,2aα,3β,6β,6aα,7β,7aα)-
Diethyl phthalate 84-66-2 1,2-Benzenedicarboxylic acid, diethyl ester
O,O-Diethyl O-2-pyrazinyl phosphorothioate; Thionazin 297-97-2 Phosphorothioic acid, O,O-diethyl O-pyrazinyl ester.
Dimethoate 60-51-5 Phosphorodithioic acid, O,O-dimethyl S-[2-(methylamino)-2-oxoethyl] ester
p-(Dimethylamino)azobenzene 60-11-7 Benzenamine, N,N-dimethyl-4-(phenylazo)-
7,12-Dimethylbenz[a]anthracene 57-97-6 Benz[a]anthracene, 7,12-dimethyl-
3,3′-Dimethylbenzidine 119-93-7 [1,1′-Biphenyl]-4,4′-diamine, 3,3′-dimethyl-
alpha, alpha-Dimethylphenethylamine 122-09-8 Benzeneethanamine, α,α-dimethyl-
2,4-Dimethylphenol; m-Xylenol 105-67-9 Phenol, 2,4-dimethyl-
Dimethyl phthalate 131-11-3 1,2-Benzenedicarboxylic acid, dimethyl ester
m-Dinitrobenzene 99-65-0 Benzene, 1,3-dinitro-
4,6-Dinitro-o-cresol; 4,6-Dinitro-2-methylphenol 534-52-1 Phenol, 2-methyl-4,6-dinitro-
2,4-Dinitrophenol 51-28-5 Phenol, 2,4-dinitro-
2,4-Dinitrotoluene 121-14-2 Benzene, 1-methyl-2,4-dinitro-
2,6-Dinitrotoluene 606-20-2 Benzene, 2-methyl-1,3-dinitro-
Dinoseb; DNBP; 2-sec-Butyl-4,6-dinitrophenol 88-85-7 Phenol, 2-(1-methylpropyl)-4,6-dinitro-
Di-n-octyl phthalate 117-84-0 1,2-Benzenedicarboxylic acid, dioctyl ester
Diphenylamine 122-39-4 Benzenamine, N-phenyl-
Disulfoton 298-04-4 Phosphorodithioic acid, O,O-diethyl S-[2- (ethylthio)ethyl] ester
Endosulfan I 959-98-8 6,9-Methano-2,4,3-benzodiox-athiepin, 6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-, 3-oxide,
Endosulfan II 33213-65-9 6,9-Methano-2,4,3-benzodioxathiepin, 6,7,8,9,10,10-hexachloro- 1,5,5a,6,9,9a-hexahydro-, 3-oxide, (3α,5aα,6β,9β, 9aα)-
Endosulfan sulfate 1031-07-8 6,9-Methano-2,4,3-benzodioxathiepin, 6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-, 3,3-dioxide
Endrin 72-20-8 2,7:3,6-Dimethanonaphth[2,3-b]oxirene, 3,4,5,6,9,9-hexachloro-1a,2,2a,3,6,6a,7,7a-octahydro-, (1aα, 2β,2aβ, 3α,6α,6aβ,7β,7aα)-
Endrin aldehyde 7421-93-4 1,2,4-Methenocyclo-penta[cd]pentalene-5-carboxaldehyde,2,2a,3,3,4,7-hexachlorodecahydro- (1α,2β,2aβ,4β,4aβ,5β,6aβ,6bβ,7R*)-
Ethylbenzene 100-41-4 Benzene, ethyl-
Ethyl methacrylate 97-63-2 2-Propenoic acid, 2-methyl-, ethyl ester
Ethyl methanesulfonate 62-50-0 Methanesulfonic acid, ethyl ester
Famphur 52-85-7 Phosphorothioic acid, O-[4-[(dimethylamino)sulfonyl]phenyl]-O,O-dimethyl ester
Fluoranthene 206-44-0 Fluoranthene
Fluorene 86-73-7 9H-Fluorene
Heptachlor 76-44-8 4,7-Methano-1H-indene,1,4,5,6,7,8,8-heptachloro-3a,4,7,7a-tetrahydro-
Heptachlor epoxide 1024-57-3 2,5-Methano-2H-indeno[1,2-b]oxirene,2,3,4,5,6,7,7-heptachloro-1a,1b,5,5a,6,6a,-hexahydro-,(1aα,1bβ,2α,5α,5aβ,6β,6aα)
Hexachlorobenzene 118-74-1 Benzene, hexachloro-
Hexachlorobutadiene 87-68-3 1,3-Butadiene, 1,1,2,3,4,4-hexachloro-
Hexachlorocyclopentadiene 77-47-4 1,3-Cyclopentadiene, 1,2,3,4,5,5-hexachloro-
Hexachloroethane 67-72-1 Ethane, hexachloro-
Hexachloropropene 1888-71-7 1-Propene, 1,1,2,3,3,3-hexachloro-
2-Hexanone; Methyl butyl ketone 591-78-6 2-Hexanone
Indeno(1,2,3-cd)pyrene 193-39-5 Indeno[1,2,3-cd]pyrene
Isobutyl alcohol 78-83-1 1-Propanol, 2-methyl-
Isodrin 465-73-6 1,4,5,8-Dimethanonaphthalene,1,2,3,4,1 0,10-hexachloro-1,4,4a,5,8,8a hexahydro-(1α, 4α, 4aβ,5β,8β,8aβ)-
Isophorone 78-59-1 2-Cyclohexen-1-one, 3,5,5-trimethyl-
Isosafrole 120-58-1 1,3-Benzodioxole, 5-(1-propenyl)-
Kepone 143-50-0 1,3,4-Metheno-2H-cyclobuta-[cd]pentalen-2-one, 1,1a,3,3a,4,5,5,5a,5b,6-decachlorooctahydro-
Lead (Total) Lead
Mercury (Total) Mercury
Methacrylonitrile 126-98-7 2-Propenenitrile, 2-methyl-
Methapyrilene 91-80-5 1,2,Ethanediamine, N,N-dimethyl-N′-2-pyridinyl-N′-(2-thienylmethyl)-
Methoxychlor 72-43-5 Benzene, 1,1′-(2,2,2,trichloroethylidene)bis [4-methoxy-
Methyl bromide; Bromomethane 74-83-9 Methane, bromo-
Methyl chloride; Chloromethane 74-87-3 Methane, chloro-
3-Methylcholanthrene 56-49-5 Benz[j]aceanthrylene, 1,2-dihydro-3-methyl-
Methyl ethyl ketone; MEK; 2-Butanone 78-93-3 2-Butanone
Methyl iodide; Iodomethane 74-88-4 Methane, iodo-
Methyl methacrylate 80-62-6 2-Propenoic acid, 2-methyl-, methyl ester
Methyl methanesulfonate 66-27-3 Methanesulfonic acid, methyl ester
2-Methylnaphthalene 91-57-6 Naphthalene, 2-methyl-
Methyl parathion; Parathion methyl 298-00-0 Phosphorothioic acid, O,O-dimethyl
4-Methyl-2-pentanone; Methyl isobutyl ketone 108-10-1 2-Pentanone, 4-methyl-
Methylene bromide; Dibromomethane 74-95-3 Methane, dibromo-
Methylene chloride; Dichloromethane 75-09-2 Methane, dichloro-
Naphthalene 91-20-3 Naphthalene
1,4-Naphthoquinone 130-15-4 1,4-Naphthalenedione
1-Naphthylamine 134-32-7 1-Naphthalenamine
2-Naphthylamine 91-59-8 2-Naphthalenamine
Nickel (Total) Nickel
o-Nitroaniline; 2-Nitroaniline 88-74-4 Benzenamine, 2-nitro-
m-Nitroaniline; 3-Nitroaniline 99-09-2 Benzenamine, 3-nitro-
p-Nitroaniline; 4-Nitroaniline 100-01-6 Benzenamine, 4-nitro-
Nitrobenzene 98-95-3 Benzene, nitro-
o-Nitrophenol; 2-Nitrophenol 88-75-5 Phenol, 2-nitro-
p-Nitrophenol; 4-Nitrophenol 100-02-7 Phenol, 4-nitro-
N-Nitrosodi-n-butylamine 924-16-3 1-Butanamine, N-butyl-N-nitroso-
N-Nitrosodiethylamine 55-18-5 Ethanamine, N-ethyl-N-nitroso-
N-Nitrosodimethylamine 62-75-9 Methanamine, N-methyl-N-nitroso-
N-Nitrosodiphenylamine 86-30-6 Benzenamine, N-nitroso-N-phenyl-
N-Nitrosodipropylamine; N-Nitroso-N-dipropylamine; Di-n-propylnitrosamine 621-64-7 1-Propanamine, N-nitroso-N-propyl-
N-Nitrosomethylethalamine 10595-95-6 Ethanamine, N-methyl-N-nitroso-
N-Nitrosopiperidine 100-75-4 Piperidine, 1-nitroso-
N-Nitrosopyrrolidine 930-55-2 Pyrrolidine, 1-nitroso-
5-Nitro-o-toluidine 99-55-8 Benzenamine, 2-methyl-5-nitro-
Parathion 56-38-2 Phosphorothioic acid, O,O-diethyl-O-(4-nitrophenyl) ester
Pentachlorobenzene 608-93-5 Benzene, pentachloro-
Pentachloronitrobenzene 82-68-8 Benzene, pentachloronitro-
Pentachlorophenol 87-86-5 Phenol, pentachloro-
Phenacetin 62-44-2 Acetamide, N-(4-ethoxyphenyl)
Phenanthrene 85-01-8 Phenanthrene
Phenol 108-95-2 Phenol
p-Phenylenediamine 106-50-3 1,4-Benzenediamine
Phorate 298-02-2 Phosphorodithioic acid, O,O-diethyl S- [(ethylthio)methyl] ester
Polychlorinated biphenyls; PCBs See footnote 6 1,1′-Biphenyl, chloro derivatives
Pronamide 23950-58-5 Benzamide, 3,5-dichloro-N-(1,1-dimethyl-2-propynyl)-
Propionitrile; Ethyl cyanide 107-12-0 Propanenitrile
Pyrene 129-00-0 Pyrene
Safrole 94-59-7 1,3-Benzodioxole, 5-(2- propenyl)-
Selenium (Total) Selenium
Silver (Total) Silver
Silvex; 2,4,5-TP 93-72-1 Propanoic acid, 2-(2,4,5- trichlorophenoxy)-
Styrene 100-42-5 Benzene, ethenyl-
Sulfide 18496-25-8 Sulfide
2,4,5-T; 2,4,5-Trichlorophenoxyacetic acid 93-76-5 Acetic acid, (2,4,5- trichlorophenoxy)-
2,3,7,8-TCDD; 2,3,7,8-Tetrachlorodibenzo- p-dioxin 1746-01-6 Dibenzo[b,e][1,4]dioxin, 2,3,7,8-tetrachloro-
1,2,4,5-Tetrachlorobenzene 95-94-3 Benzene, 1,2,4,5-tetrachloro-
1,1,1,2-Tetrachloroethane 630-20-6 Ethane, 1,1,1,2-tetrachloro-
1,1,2,2-Tetrachloroethane 79-34-5 Ethane, 1,1,2,2-tetrachloro-
Tetrachloroethylene; Tetrachloroethene; Perchloroethylene 127-18-4 Ethene, tetrachloro-
2,3,4,6-Tetrachlorophenol 58-90-2 Phenol, 2,3,4,6-tetrachloro-
Thallium (Total) Thallium
Tin (Total) Tin
Toluene 108-88-3 Benzene, methyl-
o-Toluidine 95-53-4 Benzenamine, 2-methyl-
Toxaphene See footnote 7 Toxaphene
1,2,4-Trichlorobenzene 120-82-1 Benzene, 1,2,4-trichloro-
1,1,1-Trichloroethane; Methylchloroform 71-55-6 Ethane, 1,1,1-trichloro-
1,1,2-Trichloroethane 79-00-5 Ethane, 1,1,2-trichloro-
Trichloroethylene; Trichloroethene 79-01-6 Ethene, trichloro-
Trichlorofluoromethane; CFC-11 75-69-4 Methane, trichlorofluoro-
2,4,5-Trichlorophenol 95-95-4 Phenol, 2,4,5-trichloro-
2,4,6-Trichlorophenol 88-06-2 Phenol, 2,4,6-trichloro-
1,2,3-Trichloropropane 96-18-4 Propane, 1,2,3-trichloro-
O,O,O-Triethyl phosphorothioate 126-68-1 Phosphorothioic acid, O,O,O-triethyl ester
sym-Trinitrobenzene 99-35-4 Benzene, 1,3,5-trinitro-
Vanadium (Total) Vanadium
Vinyl acetate 108-05-4 Acetic acid, ethenyl ester
Vinyl chloride; Chloroethene 75-01-4 Ethene, chloro-
Xylene (total) See footnote 8 Benzene, dimethyl-
Zinc (Total) Zinc
[70 FR 34556, June 14, 2005; 70 FR 44150, Aug. 1, 2005]

Title 40 published on 2014-07-01

no entries appear in the Federal Register after this date.