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Electronic Code of Federal Regulations (e-CFR)
e-CFR Data is current as of February 21, 2007




PART 116—DESIGNATION OF HAZARDOUS SUBSTANCES


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§ 116.4   Designation of hazardous substances.
The elements and compounds appearing in Tables 116.4 A and B are designated as hazardous substances in
accordance with section 311(b)(2)(A) of the Act. This designation includes any isomers and hydrates, as well as any
solutions and mixtures containing these substances. Synonyms and Chemical Abstract System (CAS) numbers have
been added for convenience of the user only. In case of any disparity the common names shall be considered the
designated substance.

Table 116.4A—List of Hazardous Substances

Common name  CAS No.  Synonyms  Isomers  CAS No.  
Acetaldehyde  75070  Ethanal, ethyl aldehyde, acetic aldehyde    
Acetic acid  64197  Glacial acetic acid, vinegar acid    
Acetic anhydride  108247  Acetic oxide, acetyl oxide    
Acetone cyanohydrin  75865  2-methyllactonitrile, alpha-hydroxyisobutyronitrile    
Acetyl bromide  506967     
Acetyl chloride  79367     
Acrolein  107028  2-propenal, acrylic aldehyde, acrylaldehyde, acraldehyde    
Acrylonitrile  107131  Cyanoethylene, Fumigrain, Ventox, propeneitrile, vinyl cyanide    
Adipic acid  124049  Hexanedioic acid    
Aldrin  309002  Octalene, HHDN    
Allyl alcohol  107186  2-propen-1-ol, 1-propenol-3, vinyl carbinol    
Allyl chloride  107051  3-chloropropene, 3-chloropropylene, Chlorallylene    
Aluminum sulfate  10043013  Alum    
Ammonia  7664417     
Ammonium acetate  631618  Acetic acid ammonium, salt    
Ammonium benzoate  1863634     
Ammonium bicarbonate  1066337  Acid ammonium carbonate, ammonium hydrogen carbonate    
Ammonium bichromate  7789095     
Ammonium bifluoride  1341497  Acid ammonium fluoride, ammonium hydrogen fluoride    
Ammonium bisulfite  10192300     
Ammonium carbamate  1111780  Ammonium aminoformate    
Ammonium carbonate  506876     
Ammonium chloride  12125029  Ammonium muriate, sal ammoniac, salmiac, Amchlor    
Ammonium chromate  7788989     
Ammonium citrate dibasic  3012655  Diammonium citrate, citric acid diammonium salt    
Ammonium fluoborate  13826830  Ammonium fluoroborate, ammonium borofluoride    
Ammonium fluoride  12125018  Neutral ammonium fluoride    
Ammonium hydroxide  1336216     
Ammonium oxalate  6009707     
 5972736     
 14258492     
Ammonium silicofluoride  16919190  Ammonium fluosilicate    
Ammonium sulfamate  7773060  Ammate, AMS, ammonium amidosulfate    
Ammonium sulfide  12135761     
Ammonium sulfite  10196040     
 10192300     
Ammonium tartrate  3164292  Tartaric acid ammonium salt    
 14307438     
Ammonium thiocyanate  1762954  Ammonium rhodanide, ammonium sulfocyanate, ammonium sulfocyanide    
Amly acetate  628637  Amylacetic ester  iso-  123922  
  Pear oil  sec-  626380  
  Banana oil  tert-  625161  
Aniline  62533  Aniline oil, phenylamine, aminobenzene, aminophen, kyanol    
Antimony pentachloride  7647189     
Antimony potassium tartrate  28300745  Tartar emetic, tartrated antimony, tartarized antimony, potassium
antimonyltartrate    
Antimony tribromide  7789619     
Antimony trichloride  10025919  Butter of antimony    
Antimony trifluoride  7783564  Antimony fluoride    
Antimony trioxide  1309644  Diantimony trioxide, flowers of antimony    
Arsenic disulfide  1303328  Red arsenic sulfide    
Arsenic pentoxide  1303282  Arsenic acid anhydride, arsenic oxide    
Arsenic trichloride  7784341  Arsenic chloride, arsenious chloride, arsenous chloride, butter of arsenic    
Arsenic trioxide  1327533  Arsenious acid, arsenious oxide, white arsenic    
Arsenic trisulfide  1303339  Arsenious sulfide, yellow arsenic sulfide    
Barium cyanide  542621     
Benzene  71432  Cyclohexatriene, benzol    
Benzoic acid  65850  Benzenecarboxylic acid, phenylformic acid, dracylic acid    
Benzonitrile  100470  Phenyl cyanide, cyanobenzene    
Benzoyl chloride  98884  Benzenecarbonyl chloride    
Benzyl chloride  100447     
Beryllium chloride  7787475     
Beryllium fluoride  7787497     
Beryllium nitrate  7787555     
 13597994     
Butyl acetate  123864  Acetic acid butyl ester  iso-  110190  
   sec-  105464  
   tert-  540885  
Butylamine  109739  1-aminobutane  iso-  78819  
   sec-  513495  
   sec-  13952846  
   tert-  75649  
n/butyl phthalate  84742  1.2-benzenedicarboxylic acid, dibutyl ester, dibutyl phthalate    
Butyric acid  107926  Butanoic acid, ethylacetic acid  iso-  79312  
Cadmium acetate  543908     
Cadmium bromide  7789426     
Cadmium chloride  10108642     
Calcium arsenate  7778441  Tricalcium orthoarsenate    
Calcium arsenite  52740166     
Calcium carbide  75207  Carbide, acetylenogen    
Calcium chromate  13765190  Calcium chrome yellow, geblin, yellow ultramarine    
Calcium cyanide  592018     
Calcium dodecylbenzenesulfonate  26264062     
Calcium hypochlorite  7778543     
Captan  133062  Orthocide-406, SR-406, Vancide-89    
Carbaryl  63252  Sevin    
Carbofuran  1563662  Furadan    
Carbon disulfide  75150  Carbon bisulfide, dithiocarbonic anhydride    
Carbon tetrachloride  56235  Tetrachloromethane Perchloromethane    
Chlordane  57749  Toxichlor, chlordan    
Chlorine  75003     
Chlorobenzene  108907  Monochlorobenzene, benzene chloride    
Chloroform  67663  Trichloromethane    
Chlorpyrifos  2921882  Dursban    
Chlorosulfonic acid  7790945  Sulfuric chlorohydrin    
Chromic acetate  1066304     
Chromic acid  11115745  Chromic anhydride, chromium trioxide    
Chromic sulfate  10101538     
Chromous chloride  10049055     
Cobaltous bromide  7789437  Cobalt bromide    
Coabaltous formate  544183  Cobalt formate    
Cobaltous sulfamate  14017415  Cobalt sulfamate    
Coumaphos  56724  Co-Ral    
Cresol  1319773  Cresylic acid  m-  108394  
  Hydroxytoluene  o-  95487  
   p-  106445  
Crotonaldehyde  4170303  2-butenal propylene aldelhyde    
Cupric acetate  142712  Copper acetate, crystalized verdigris    
Cupric acetoarsenite  12002038  Copper acetoarsenite, copper acetate arsenite, Paris green    
Cupric chloride  7447394  Copper chloride    
Cupric nitrate  3251238  Copper nitrate    
Cupric oxalate  5893663  Copper oxalate    
Cupric sulfate  7758987  Copper sulfate    
Cupric sulfate, ammoniated  10380297  Ammoniated copper sulfate    
Cupric tartrate  815827  Copper tartrate    
Cyanogen chloride  506774     
Cyclohexane  110827  Hexahydrobenzene, hexamethylene, hexanaphthene    
2,4-D acid  94757  2,4-dichlorophenoxyacetic acid    
2,4-D ester  94111  2,4-dichlorophenoxyacetic acid ester    
 94791     
 94804     
 1320189     
 1928387     
 1928616     
 1929733     
 2971382     
 25168267     
 53467111     
DDT  50293  p,p′-DDT    
Diazinon  333415  Dipofene, Diazitol, Basudin, Spectracide    
Dicamba  1918009  2-methoxy-3,6-dichlorobenzoic acid    
Dichlobenil  1194656  2,6-dichlorobenzonitrile, 2,6-DBN    
Dichlone  117806  Phygon, dichloronaphthoquinone    
Dichlorobenzene  25321226  Di-chloricide  Ortho  95501  
  Paramoth (Para)  Para  106467  
Dichloropropane  26638197  Propylene dichloride  1,1  78999  
   1,2  78875  
   1,3  142289  
Dichloropropene  26952238   1,3  542756  
   2,3  78886  
Dichloropropene-dichloropropane (mixture)  8003198  D-D mixture Vidden D    
2,2-Dichloropropionic acid  75990  Dalapon    
Dichlorvos  62737  2,2-dichlorovinyl dimethyl phosphate, Vapona    
Dicofol  115322  Di(p-chlorophenyl)-trichloromethylcarbinol, DTMC, dicofol    
Dieldrin  60571  Alvit    
Diethylamine  109897     
Dimethylamine  124403     
Dinitrobenzene (mixed)  25154545  Dinitrobenzol  m-  99650  
   o-  528290  
   p-  100254  
Dinitrophenol  51285  Aldifen  (2,5-)  329715  
   (2,4-)   
   (2,6-)  573568  
Dinitrotoluene  25321146  DNT  2,4  121142  
   2,6  606202  
   3,4  610399  
Diquat  85007  Aquacide    
 2764729  Dextrone, Reglone, Diquat dibromide    
Disulfoton  298044  Di-syston    
Diuron  330541  DCMU, DMU    
Dodecylbenzenesulfonic acid  27176870     
Endosulfan  115297  Thiodan    
Endrin  72208  Mendrin, Compound 269    
Epichlorohydrin  106898  -chloropropylene oxide    
Ethion  563122  Nialate, ethyl methylene, phosphorodithioate    
Ethylbenzene  100414  Phenylethane    
Ethylenediamine  107153  1,2-diaminoethane    
Ethylenediamine-tetraacetic acid (EDTA)  60004  Edetic acid, Havidote, (ethylenedinitrilo)-tetraacetic acid    
Ethylene dibromide  106934  1,2-dibromoethane acetylene dibromide sym-dibromoethylene    
Ethylene dichloride  107062  1,2-dichloroethane sym-bichloroethane    
Ferric ammonium citrate  1185575  Ammonium ferric citrate    
Ferric ammonium oxalate  2944674  Ammonium ferric oxalate    
 55488874     
Ferric chloride  7705080  Flores martis, iron trichloride    
Ferric fluoride  7783508     
Ferric nitrate  10421484  Iron nitrate    
Ferric sulfate  10028225  Ferric persulfate, ferric sesquisulfate, ferric tersulfate    
Ferrous ammonium sulfate  10045893  Mohr's salt, iron ammonium sulfate    
Ferrous chloride  7758943  Iron chloride, iron dichloride, iron protochloride    
Ferrous sulfate  7720787  Green vitriol    
 7782630  Iron vitriol, iron sulfate, iron protosulfate    
Formaldehyde  50000  Methyl aldehyde, methanal, formalin    
Formic acid  64186  Methanoic acid    
Fumaric acid  110178  Trans-butenedioic acid, trans-1,2-ethylenedicarboxylic acid, boletic acid, allomaleic acid    
Furfural  98011  2-furaldehyde, pyromucic aldehyde    
Guthion  86500  Gusathion, azinphos-methyl    
Heptachlor  76448  Velsicol-104, Drinox, Heptagran    
Hexachlorocyclopentadiene  77474  Perchlorocyclopentadiene    
Hydrochloric acid  7647010  Hydrogen chloride, muriatic acid    
Hydrofluoric acid  7664393  Fluohydric acid    
Hydrogen cyanide  74908  Hydrocyanic acid    
Hydrogen sulfide  7783064  Hydrosulfuric acid sulfur hydride    
Isoprene  78795  2-methyl-1,3-butadiene    
Isopropanolamine dodecylbenzenesulfonate  42504461     
Kepone  143500  Chlordecone 1,1a,3,3a,4,5,5,5a,5b,6-decachlorooctahydro-1,3,4-metheno-2H-cyclobuta(cd)pentalen-
2-one    
Lead acetate  301042  Sugar of lead    
Lead arsenate  7784409     
 7645252     
 10102484     
Lead chloride  7758954     
Lead fluoborate  13814965  Lead fluoroborate    
Lead fluoride  7783462  Lead difluoride, plumbous fluoride    
Lead iodide  10101630     
Lead nitrate  10099748     
Lead stearate  7428480  Stearic acid lead salt    
 1072351     
 52652592     
Lead sulfate  7446142     
Lead sulfide  1314870  Galena    
Lead thiocyanate  592870  Lead sulfocyanate    
Lindane  58899  Gamma-BHC, gamma-benzene hexachloride    
Lithium chromate  14307358     
Malathion  121755  Phospothion    
Maleic acid  110167  Cis-butenedioic acid, cis-1,2-ethylenedicarboxylic acid, toxilic acid    
Maleic anhydride  108316  2,5-furandione, cis-butenedioic anhydride, toxilic anhydride    
Mercaptodimethur  203657  Mesurol    
Mercuric cyanide  592041  Mercury cyanide    
Mercuric nitrate  10045940  Mercury nitrate, mercury pernitrate    
Mercuric sulfate  7783359  Mercury sulfate, mercury persulfate    
Mercuric thiocyanate  592858  Mercury thiocyanate, mercuric sulfocyanate, mercuric sulfocyanide    
Mercurous nitrate  7782867     
 10415755  Mercury protonitrate    
Methoxychlor  72435  DMDT, methoxy-DDT    
Methyl mercaptan  74931  Methanethiol, mercaptomethane, methyl sulfhydrate, thiomethyl alcohol    
Methyl methacrylate  80626  Methacrylic acid methyl ester, methyl-2-methyl-2-propenoate    
Methyl parathion  298000  Nitrox-80    
Mevinphos  7786347  Phosdrin    
Mexacarbate  315184  Zectran    
Monoethylamine  75047  Ethylamine, aminoethane    
Monomethylamine  74895  Methylamine, aminomethane    
Naled  300765  Dibrom    
Naphthalene  91203  White tar, tar camphor, naphthalin    
Naphthenic acid  1338245  Cyclohexanecarboxylic acid, hexahydrobenzoic acid    
Nickel ammonium sulfate  15699180  Ammonium nickel sulfate    
Nickel chloride  37211055  Nickelous chloride    
 7718549     
Nickel hydroxide  12054487  Nickelous hydroxide    
Nickel nitrate  14216752     
Nickel sulfate  7786814  Nickelous sulfate    
Nitric acid  7697372  Aqua fortis    
Nitrobenzene  98953  Nitrobenzol, oil of mirbane    
Nitrogen dioxide  10102440  Nitrogen tetraoxide    
Nitrophenol (mixed)  25154556  Mononitrophenol  m-  554847  
   o-  88755  
   p-  100027  
Nitrotoluene  1321126   Ortho  88722  
   Meta  99081  
   Para  99990  
Paraformaldehyde  30525894  Paraform, Formagene, Triformol, polymerized formaldehyde, polyoxymethylene    
Parathion  56382  DNTP, Niran    
Pentachlorophenol  87865  PCP, Penta    
Phenol  108952  Carbolic acid, phenyl hydroxide, hydroxybenzene, oxybenzene    
Phosgene  75445  Diphosgene, carbonyl chloride, chloroformyl chloride    
Phosphoric acid  7664382  Orthophosphoric acid    
Phosphorus  7723140  Black phosphorus, red phosphorus, white phosphorus, yellow phosphorus    
Phosphorus oxychloride  10025873  Phosphoryl chloride, phosphorus chloride    
Phosphorus pentasulfide  1314803  Phosphoric sulfide, thiophosphoric anhydride, phosphorus persulfide    
Phosphorus trichloride  7719122  Phosphorous chloride    
Polychorinated biphenyls  1336363  PCB, Aroclor, polychlorinated diphenyls    
Potassium arsenate  7784410     
Potassium arsenite  10124502  Potassium metaarsenite    
Potassium bichromate  7778509  Potassium dichromate    
Potassium chromate  7789006     
Potassium cyanide  151508     
Potassium hydroxide  1310583  Potassium hydrate, caustic potash, potassa    
Potassium permanganate  7722647  Chameleon mineral    
Propargite  2312358  Omite    
Propionic acid  79094  Propanoic acid, methylacetic acid, ethylformic acid    
Propionic anhydride  123626  Propanoic anhydride, methylacetic anhydride    
Propylene oxide  75569  Propene oxide    
Pyrethrins  121299  Pyrethrin I    
 121211  Pyrethrin II    
Quinoline  91225  1-benzazine, benzo(b)pyridine, leuocoline, chinoleine, leucol    
Resorcinol  108463  Resorcin, 1,3-benzenediol, meta-dihydroxybenzene    
Selenium oxide  7446084  Selenium dioxide    
Silver nitrate  7761888  Nitric acid silver (1+) salt lunar caustic    
Sodium  7440235  Natrium    
Sodium arsenate  7631892  Disodium arsenate    
Sodium arsenite  7784465  Sodium metaarsenite    
Sodium bichromate  10588019  Sodium dichromate    
Sodium bifluoride  1333831     
Sodium bisulfite  7631905  Sodium acid sulfite, sodium hydrogen sulfite    
Sodium chromate  7775113     
Sodium cyanide  143339     
Sodium dodecylbenzene-sulfonate  25155300     
Sodium fluoride  7681494  Villiaumite    
Sodium hydrosulfide  16721805  Sodium hydrogen sulfide    
Sodium hydroxide  1310732  Caustic soda, soda lye, sodium hydrate    
Sodium hypochlorite  7681529  Bleach    
 10022705     
Sodium methylate  124414  Sodium methoxide    
Sodium nitrite  7632000     
Sodium phosphate, dibasic  7558794     
 10039324     
 10140655     
Sodium phosphate, tribasic  7785844     
 7601549     
 10101890     
 10361894     
 7758294     
 10124568     
Sodium selenite  10102188     
 7782823     
Strontium chromate  7789062     
Strychnine  57249     
Styrene  100425  Vinylbenzene, phenylethylene, styrol, styrolene, cinnamene, cinnamol    
Sulfuric acid  7664939  Oil of vitriol, oleum    
Sulfur monochloride  12771083  Sulfur chloride    
2,4,5-T acid  93765  2,4,5-trichlorophenoxyacetic acid    
2,4,5-T amines  6369966  Acetic acid (2,4,5-trichlorophenoxy)-compound with N,N-dimethylmethanamine (1:1)    
 6369977  Acetic acid (2,4,5-trichlorophenoxy)-compound with N-methylmethanamine (1:1)    
 1319728  Acetic acid (2,4,5-trichlorophenoxy)-compound with 1-amino-2-propanol (1:1)    
 3813147  Acetic acid (2,4,5-trichlorophenoxy)-compound with 2,2'2”-nitrilotris [ethanol] (1:1)    
2,4,5-T esters  2545597  2,4,5-trichlorophenoxyacetic esters    
 93798     
 61792072     
 1928478     
 25168154     
2,4,5-T salts  13560991  Acetic acid (2,4,5-trichlorophenoxy)-sodium salt    
TDE  72548  DDD    
2,4,5-TP acid  93721  Propanoic acid 2-(2,4,5-trichlorophenoxy)    
2,4,5-TP esters  32534955  Propanoic acid, 2-(2,4,5-trichlorophenoxy)-, isooctyl ester    
Tetraethyl lead  78002  Lead tetraethyl, TEL    
Tetraethyl pyrophosphate  107493  TEPP    
Thallium sulfate  10031591     
 7446186     
Toluene  108883  Toluol, methylbenzene, phenylmethane, Methacide    
Toxaphene  8001352  Camphechlor    
Trichlorfon  52686  Dipterex
Dylox    
Trichlorethylene  79016  Ethylene trichloride    
Trichlorophenol  25167822  Collunosol, Dowicide 2 or 2S, Omal, Phenachlor  (2,3,4-)
(2,3,5-)
(2,3,6-)
(2,4,5-)
(2,4,6-)
(3,4,5-)  15950660
933788
933755
95954
88062
609198  
Triethanolamine dodecylbenzenesulfonate  27323417     
Triethylamine  121448     
Trimethylamine  75503  TMA    
Uranyl acetate  541093     
Uranyl nitrate  10102064     
 36478769     
Vanadium pentoxide  1314621  Vanadic anhydride, vanadic acid anhydride    
Vanadyl sulfate  27774136  Vanadic sulfate, vanadium sulfate    
Vinyl acetate  108054  Acetic acid ethylene ether    
Vinylidene chloride  75354  1,1-dichlorethylene    
  1,1-dichloroethene    
Xylene (mixed)  1330207  Dimethylbenzene  m-  108383  
  Xylol  o-  95476  
   p-  106423  
Xylenol  1300716  Dimethylphenol, hydroxydimethylbenzene    
Zinc acetate  557346     
Zinc ammonium chloride  14639975     
 14639986     
 52628258     
Zinc borate  1332076     
Zinc bromide  7699458     
Zinc carbonate  3486359     
Zinc chloride  7646857  Butter of zinc    
Zinc cyanide  557211     
Zinc fluoride  7783495     
Zinc formate  557415     
Zinc hydrosulfite  7779864     
Zinc nitrate  7779886     
Zinc phenolsulfonate  127822  Zinc sulfocarbolate    
Zinc phosphide  1314847     
Zinc silicofluoride  16871719  Zinc fluosilicate    
Zinc sulfate  7733020  White vitriol, zinc vitriol, white copperas    
Zirconium nitrate  13746899     
Zirconium potassium fluoride  16923958     
Zirconium sulfate  14644612  Disulfatozirconic acid    
Zirconium tetrachloride  10026116     

Table 116.4B—List of Hazardous Substances by CAS Number

CAS No.  Common name  
50000  Formaldehyde  
50293  DDT  
51285  2,4-Dinitrophenol  
52686  Trichlorfon  
56382  Parathion  
56724  Coumaphos  
57249  Strychnine  
57749  Chlordane  
58899  Lindane  
60004  Ethylenediaminetetraacetic  
   acid (EDTA)  
60571  Dieldrin  
62533  Aniline  
62737  Dichlorvos  
63252  Carbaryl  
64186  Formic acid  
64197  Acetic acid  
65850  Benzoic acid  
67663  Chloroform  
71432  Benzene  
72208  Endrin  
72435  Methoxychlor  
72548  TDE  
74895  Monomethylamine  
74908  Hydrogen cyanide  
74931  Methyl mercaptan  
75047  Monoethylamine  
75070  Acetaldehyde  
75150  Carbon disulfide  
75207  Calcium carbide  
75445  Phosgene  
75503  Trimethylamine  
75649  tert-Butylamine  
75865  Acetone cyanohydrin  
75990  2,2-Dichloropropionic acid  
76448  Heptachlor  
78002  Tetraethyl lead  
78795  Isoprene  
78819  iso-Butylamine  
79094  Propionic acid  
79312  iso-Butyric acid  
79367  Acetyl chloride  
80626  Methyl methacrylate  
85007  Diquat  
86500  Guthion  
87865  Pentachlorophenol  
88755  o-Nitrophenol  
91203  Naphthalene  
91225  Quinoline  
93765  2,4,5-T acid  
93798  2,4,5-T ester  
94111  2,4-D ester  
94757  2,4-D acid  
94791  2,4-D ester  
94804  2,4-D Butyl ester  
95476  o-Xylene  
95487  o-Cresol  
98011  Furfural  
98884  Benzoyl chloride  
98953  Nitrobenzene  
99650  m-Dinitrobenzene  
100027  p-Nitrophenol  
100254  p-Dinitrobenzene  
100414  Ethylbenzene  
100425  Styrene  
100447  Benzyl chloride  
100470  Benzonitrile  
105464  sec-Butyl acetate  
106423  p-Xylene  
106445  p-Cresol  
107028  Acrolein  
107051  Allyl chloride  
107131  Acrylonitrile  
107153  Ethylenediamine  
107186  Allyl alcohol  
107493  Tetraethyl pyrophosphate  
107926  n-Butyric acid  
108054  Vinyl acetate  
108247  Acetic anhydride  
108316  Maleic anhydride  
108383  m-Xylene  
108394  m-Cresol  
108463  Resorcinol  
108883  Toluene  
108907  Chlorobenzene  
108952  Phenol  
109739  n-Butylamine  
109897  Diethylamine  
110167  Maleic acid  
110178  Fumaric acid  
110190  iso-Butyl acetate  
110827  Cyclohexane  
115297  Endosulfan  
115322  Dicofol  
117806  Dichlone  
121211  Pyrethrin  
121299  Pyrethrin  
121448  Triethylamine  
121755  Malathion  
123626  Propionic anhydride  
123864  n-Butyl acetate  
123922  iso-Amyl acetate  
124403  Dimethylamine  
124414  Sodium methylate  
127822  Zinc phenolsulfonate  
133062  Captan  
142712  Cupric acetate  
143339  Sodium cyanide  
151508  Potassium cyanide  
298000  Methyl parathion  
298044  Disulfoton  
300765  Naled  
301042  Lead acetate  
309002  Aldrin  
315184  Mexacarbate  
329715  2,5-Dinitrophenol  
330541  Diuron  
333415  Diazinon  
506774  Cyanogen chloride  
506876  Ammonium carbonate  
506967  Acetyl bromide  
513495  sec-Butylamine  
528290  o-Dinitrobenzene  
540885  tert-Butyl acetate  
541093  Uranyl acetate  
542621  Barium cyanide  
543908  Cadmium acetate  
544183  Cobaltous formate  
554847  m-Nitrophenol  
557211  Zinc cyanide  
557346  Zinc acetate  
557415  Zinc formate  
563122  Ethion  
573568  2,6-Dinitrophenol  
592018  Calcium cyanide  
592041  Mercuric cyanide  
592858  Mercuric thiocyanate  
592870  Lead thiocyanate  
625161  tert-Amyl acetate  
626380  sec-Amyl acetate  
628637  n-Amyl acetate  
631618  Ammonium acetate  
815827  Cupric tartrate  
1066304  Chromic acetate  
1066337  Ammonium bicarbonate  
1072351  Lead stearate  
1111780  Ammonium carbamate  
1185575  Ferric ammonium citrate  
1194656  Dichlobenil  
1300716  Xylenol  
1303282  Arsenic pentoxide  
1303328  Arsenic disulfide  
1303339  Arsenic trisulfide  
1309644  Antimony trioxide  
1310583  Potassium hydroxide  
1310732  Sodium hydroxide  
1314621  Vanadium pentoxide  
1314803  Phosphorus pentasulfide  
1314847  Zinc phosphide  
1314870  Lead sulfide  
1319773  Cresol (mixed)  
1320189  2,4-D ester  
1327533  Arsenic trioxide  
1330207  Xylene  
1332076  Zinc borate  
1333831  Sodium bifluoride  
1336216  Ammonium hydroxide  
1336363  Polychlorinated biphenyls  
1338245  Naphthenic acid  
1341497  Ammonium bifluoride  
1762954  Ammonium thiocyanate  
1863634  Ammonium benzoate  
1918009  Dicamba  
1928387  2,4-D esters  
1928478  2,4,5-T ester  
1928616  2,4-D ester  
1929733  2,4-D ester  
2545597  2,4,5-T ester  
2764729  Diquat  
2921882  Chlorpyrifos  
2944674  Ferric ammonium oxalate  
2971382  2,4-D ester  
3012655  Ammonium citrate, dibasic  
3164292  Ammonium tartrate  
3251238  Cupric nitrate  
3486359  Zinc carbonate  
5893663  Cupric oxalate  
5972736  Ammonium oxalate  
6009707  Ammonium oxalate  
6369966  2,4,5-T ester  
7428480  Lead stearate  
7440235  Sodium  
7446084  Selenium oxide  
7446142  Lead sulfate  
7447394  Cupric chloride  
7558794  Sodium phosphate, dibasic  
7601549  Sodium phosphate, tribasic  
7631892  Sodium arsenate  
7631905  Sodium bisulfite  
7632000  Sodium nitrite  
7645252  Lead arsenate  
7646857  Zinc chloride  
7647010  Hydrochloric acid  
7647189  Antimony pentachloride  
7664382  Phosphoric acid  
7664393  Hydrofluoric acid  
7664417  Ammonia  
7664939  Sulfuric acid  
7681494  Sodium fluoride  
7681529  Sodium hypochlorite  
7697372  Nitric acid  
7699458  Zinc bromide  
7705080  Ferric chloride  
7718549  Nickel chloride  
7719122  Phosphorus trichloride  
7720787  Ferrous sulfate  
7722647  Potassium permanganate  
7723140  Phosphorus  
7733020  Zinc sulfate  
7758294  Sodium phosphate, tribasic  
7758943  Ferrous chloride  
7758954  Lead chloride  
7758987  Cupric sulfate  
7773060  Ammonium sulfamate  
7775113  Sodium chromate  
7778441  Calcium arsenate  
7778509  Potassium bichromate  
7778543  Calcium hypochlorite  
7779864  Zinc hydrosulfite  
7779886  Zinc nitrate  
7782505  Chlorine  
7782630  Ferrous sulfate  
7782823  Sodium selenite  
7782867  Mercurous nitrate  
7783359  Mercuric sulfate  
7783462  Lead fluoride  
7783495  Zinc fluoride  
7783508  Ferric fluoride  
7783564  Antimony trifluoride  
7784341  Arsenic trichloride  
7784409  Lead arsenate  
7784410  Potassium arsenate  
7784465  Sodium arsenite  
7785844  Sodium phosphate, tribasic  
7786347  Mevinphos  
7786814  Nickel sulfate  
7787475  Beryllium chloride  
7787497  Beryllium fluoride  
7787555  Beryllium nitrate  
7788989  Ammonium chromate  
7789006  Potassium chromate  
7789062  Strontium chromate  
7789095  Ammonium bichromate  
7789426  Cadmium bromide  
7789437  Cobaltous bromide  
7789619  Antimony tribromide  
7790945  Chlorosulfonic acid  
8001352  Toxaphene  
10022705  Sodium hypochlorite  
10025873  Phosphorus oxychloride  
10025919  Antimony trichloride  
10026116  Zirconium tetrachloride  
10028225  Ferric sulfate  
10028247  Sodium phosphate, dibasic  
10039324  Sodium phosphate, dibasic  
10043013  Aluminum sulfate  
10045893  Ferrous ammonium sulfate  
10045940  Mercuric nitrate  
10049055  Chromous chloride  
10099748  Lead nitrate  
10101538  Chromic sulfate  
10101630  Lead iodide  
10101890  Sodium phosphate, tribasic  
10102064  Uranyl nitrate  
10102188  Sodium selenite  
10102440  Nitrogen dioxide  
10102484  Lead arsenate  
10108642  Cadmium chloride  
10124502  Potassium arsenite  
10124568  Sodium phosphate, tribasic  
10140655  Sodium phosphate, dibasic  
10192300  Ammonium bisulfite  
10196040  Ammonium sulfite  
10361894  Sodium phosphate, tribasic  
10380297  Cupric sulfate, ammoniated  
10415755  Mercurous nitrate  
10421484  Ferric nitrate  
10588019  Sodium bichromate  
11115745  Chromic acid  
12002038  Cupric acetoarsenite  
12054487  Nickel hydroxide  
12125018  Ammonium fluoride  
12125029  Ammonium chloride  
12135761  Ammonium sulfide  
12771083  Sulfur chloride  
13597994  Beryllium nitrate  
13746899  Zirconium nitrate  
13765190  Calcium chromate  
13814965  Lead fluoborate  
13826830  Ammonium fluoborate  
13952846  sec-Butylamine  
14017415  Cobaltous sulfamate  
14216752  Nickel nitrate  
14258492  Ammonium oxalate  
14307358  Lithium chromate  
14307438  Ammonium tartrate  
14639975  Zinc ammonium chloride  
14639986  Zinc ammonium chloride  
14644612  Zirconium sulfate  
15699180  Nickel ammonium sulfate  
16721805  Sodium hydrosulfide  
16871719  Zinc silicofluoride  
16919190  Ammonium silicofluoride  
16923958  Zirconium potassium fluoride  
25154545  Dinitrobenzene  
25154556  Nitrophenol  
25155300  Sodium dodecylbenzenesulfonate  
25167822  Trichlorophenol  
25168154  2,4,5-T ester  
25168267  2,4-D ester  
26264062  Calcium dodecylbenzenesulfonate  
27176870  Dodecylbenzenesulfonic acid  
27323417  Triethanolamine dodecylbenzenesulfonate  
27774136  Vanadyl sulfate  
28300745  Antimony potassium tartrate  
30525894  Paraformaldehyde  
36478769  Uranyl nitrate  
37211055  Nickel chloride  
42504461  Dodecylbenzenesulfonate isopropanolamine  
52628258  Zinc ammonium chloride  
52740166  Calcium arsenite  
53467111  2,4-D ester  
55488874  Ferric ammonium oxalate  
61792072  2,4,5-T ester  

[43 FR 10474, Mar. 13, 1978; 43 FR 27533, June 26, 1978, as amended at 44 FR 10268, Feb. 16, 1979; 44 FR
65400, Nov. 13, 1979; 44 FR 66602, Nov. 20, 1979; 54 FR 33482, Aug. 14, 1989]


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PART 116—DESIGNATION OF HAZARDOUS SUBSTANCES


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§ 116.4   Designation of hazardous substances.
The elements and compounds appearing in Tables 116.4 A and B are designated as hazardous substances in
accordance with section 311(b)(2)(A) of the Act. This designation includes any isomers and hydrates, as well as any
solutions and mixtures containing these substances. Synonyms and Chemical Abstract System (CAS) numbers have
been added for convenience of the user only. In case of any disparity the common names shall be considered the
designated substance.

Table 116.4A—List of Hazardous Substances

Common name  CAS No.  Synonyms  Isomers  CAS No.  
Acetaldehyde  75070  Ethanal, ethyl aldehyde, acetic aldehyde    
Acetic acid  64197  Glacial acetic acid, vinegar acid    
Acetic anhydride  108247  Acetic oxide, acetyl oxide    
Acetone cyanohydrin  75865  2-methyllactonitrile, alpha-hydroxyisobutyronitrile    
Acetyl bromide  506967     
Acetyl chloride  79367     
Acrolein  107028  2-propenal, acrylic aldehyde, acrylaldehyde, acraldehyde    
Acrylonitrile  107131  Cyanoethylene, Fumigrain, Ventox, propeneitrile, vinyl cyanide    
Adipic acid  124049  Hexanedioic acid    
Aldrin  309002  Octalene, HHDN    
Allyl alcohol  107186  2-propen-1-ol, 1-propenol-3, vinyl carbinol    
Allyl chloride  107051  3-chloropropene, 3-chloropropylene, Chlorallylene    
Aluminum sulfate  10043013  Alum    
Ammonia  7664417     
Ammonium acetate  631618  Acetic acid ammonium, salt    
Ammonium benzoate  1863634     
Ammonium bicarbonate  1066337  Acid ammonium carbonate, ammonium hydrogen carbonate    
Ammonium bichromate  7789095     
Ammonium bifluoride  1341497  Acid ammonium fluoride, ammonium hydrogen fluoride    
Ammonium bisulfite  10192300     
Ammonium carbamate  1111780  Ammonium aminoformate    
Ammonium carbonate  506876     
Ammonium chloride  12125029  Ammonium muriate, sal ammoniac, salmiac, Amchlor    
Ammonium chromate  7788989     
Ammonium citrate dibasic  3012655  Diammonium citrate, citric acid diammonium salt    
Ammonium fluoborate  13826830  Ammonium fluoroborate, ammonium borofluoride    
Ammonium fluoride  12125018  Neutral ammonium fluoride    
Ammonium hydroxide  1336216     
Ammonium oxalate  6009707     
5972736     
14258492     
Ammonium silicofluoride  16919190  Ammonium fluosilicate    
Ammonium sulfamate  7773060  Ammate, AMS, ammonium amidosulfate    
Ammonium sulfide  12135761     
Ammonium sulfite  10196040     
10192300     
Ammonium tartrate  3164292  Tartaric acid ammonium salt    
14307438     
Ammonium thiocyanate  1762954  Ammonium rhodanide, ammonium sulfocyanate, ammonium sulfocyanide    
Amly acetate  628637  Amylacetic ester  iso-  123922  
Pear oil  sec-  626380  
Banana oil  tert-  625161  
Aniline  62533  Aniline oil, phenylamine, aminobenzene, aminophen, kyanol    
Antimony pentachloride  7647189     
Antimony potassium tartrate  28300745  Tartar emetic, tartrated antimony, tartarized antimony, potassium
antimonyltartrate    
Antimony tribromide  7789619     
Antimony trichloride  10025919  Butter of antimony    
Antimony trifluoride  7783564  Antimony fluoride    
Antimony trioxide  1309644  Diantimony trioxide, flowers of antimony    
Arsenic disulfide  1303328  Red arsenic sulfide    
Arsenic pentoxide  1303282  Arsenic acid anhydride, arsenic oxide    
Arsenic trichloride  7784341  Arsenic chloride, arsenious chloride, arsenous chloride, butter of arsenic    
Arsenic trioxide  1327533  Arsenious acid, arsenious oxide, white arsenic    
Arsenic trisulfide  1303339  Arsenious sulfide, yellow arsenic sulfide    
Barium cyanide  542621     
Benzene  71432  Cyclohexatriene, benzol    
Benzoic acid  65850  Benzenecarboxylic acid, phenylformic acid, dracylic acid    
Benzonitrile  100470  Phenyl cyanide, cyanobenzene    
Benzoyl chloride  98884  Benzenecarbonyl chloride    
Benzyl chloride  100447     
Beryllium chloride  7787475     
Beryllium fluoride  7787497     
Beryllium nitrate  7787555     
13597994     
Butyl acetate  123864  Acetic acid butyl ester  iso-  110190  
 sec-  105464  
 tert-  540885  
Butylamine  109739  1-aminobutane  iso-  78819  
 sec-  513495  
 sec-  13952846  
 tert-  75649  
n/butyl phthalate  84742  1.2-benzenedicarboxylic acid, dibutyl ester, dibutyl phthalate    
Butyric acid  107926  Butanoic acid, ethylacetic acid  iso-  79312  
Cadmium acetate  543908     
Cadmium bromide  7789426     
Cadmium chloride  10108642     
Calcium arsenate  7778441  Tricalcium orthoarsenate    
Calcium arsenite  52740166     
Calcium carbide  75207  Carbide, acetylenogen    
Calcium chromate  13765190  Calcium chrome yellow, geblin, yellow ultramarine    
Calcium cyanide  592018     
Calcium dodecylbenzenesulfonate  26264062     
Calcium hypochlorite  7778543     
Captan  133062  Orthocide-406, SR-406, Vancide-89    
Carbaryl  63252  Sevin    
Carbofuran  1563662  Furadan    
Carbon disulfide  75150  Carbon bisulfide, dithiocarbonic anhydride    
Carbon tetrachloride  56235  Tetrachloromethane Perchloromethane    
Chlordane  57749  Toxichlor, chlordan    
Chlorine  75003     
Chlorobenzene  108907  Monochlorobenzene, benzene chloride    
Chloroform  67663  Trichloromethane    
Chlorpyrifos  2921882  Dursban    
Chlorosulfonic acid  7790945  Sulfuric chlorohydrin    
Chromic acetate  1066304     
Chromic acid  11115745  Chromic anhydride, chromium trioxide    
Chromic sulfate  10101538     
Chromous chloride  10049055     
Cobaltous bromide  7789437  Cobalt bromide    
Coabaltous formate  544183  Cobalt formate    
Cobaltous sulfamate  14017415  Cobalt sulfamate    
Coumaphos  56724  Co-Ral    
Cresol  1319773  Cresylic acid  m-  108394  
Hydroxytoluene  o-  95487  
 p-  106445  
Crotonaldehyde  4170303  2-butenal propylene aldelhyde    
Cupric acetate  142712  Copper acetate, crystalized verdigris    
Cupric acetoarsenite  12002038  Copper acetoarsenite, copper acetate arsenite, Paris green    
Cupric chloride  7447394  Copper chloride    
Cupric nitrate  3251238  Copper nitrate    
Cupric oxalate  5893663  Copper oxalate    
Cupric sulfate  7758987  Copper sulfate    
Cupric sulfate, ammoniated  10380297  Ammoniated copper sulfate    
Cupric tartrate  815827  Copper tartrate    
Cyanogen chloride  506774     
Cyclohexane  110827  Hexahydrobenzene, hexamethylene, hexanaphthene    
2,4-D acid  94757  2,4-dichlorophenoxyacetic acid    
2,4-D ester  94111  2,4-dichlorophenoxyacetic acid ester    
94791     
94804     
1320189     
1928387     
1928616     
1929733     
2971382     
25168267     
53467111     
DDT  50293  p,p′-DDT    
Diazinon  333415  Dipofene, Diazitol, Basudin, Spectracide    
Dicamba  1918009  2-methoxy-3,6-dichlorobenzoic acid    
Dichlobenil  1194656  2,6-dichlorobenzonitrile, 2,6-DBN    
Dichlone  117806  Phygon, dichloronaphthoquinone    
Dichlorobenzene  25321226  Di-chloricide  Ortho  95501  
Paramoth (Para)  Para  106467  
Dichloropropane  26638197  Propylene dichloride  1,1  78999  
 1,2  78875  
 1,3  142289  
Dichloropropene  26952238   1,3  542756  
 2,3  78886  
Dichloropropene-dichloropropane (mixture)  8003198  D-D mixture Vidden D    
2,2-Dichloropropionic acid  75990  Dalapon    
Dichlorvos  62737  2,2-dichlorovinyl dimethyl phosphate, Vapona    
Dicofol  115322  Di(p-chlorophenyl)-trichloromethylcarbinol, DTMC, dicofol    
Dieldrin  60571  Alvit    
Diethylamine  109897     
Dimethylamine  124403     
Dinitrobenzene (mixed)  25154545  Dinitrobenzol  m-  99650  
 o-  528290  
 p-  100254  
Dinitrophenol  51285  Aldifen  (2,5-)  329715  
 (2,4-)   
 (2,6-)  573568  
Dinitrotoluene  25321146  DNT  2,4  121142  
 2,6  606202  
 3,4  610399  
Diquat  85007  Aquacide    
2764729  Dextrone, Reglone, Diquat dibromide    
Disulfoton  298044  Di-syston    
Diuron  330541  DCMU, DMU    
Dodecylbenzenesulfonic acid  27176870     
Endosulfan  115297  Thiodan    
Endrin  72208  Mendrin, Compound 269    
Epichlorohydrin  106898  -chloropropylene oxide    
Ethion  563122  Nialate, ethyl methylene, phosphorodithioate    
Ethylbenzene  100414  Phenylethane    
Ethylenediamine  107153  1,2-diaminoethane    
Ethylenediamine-tetraacetic acid (EDTA)  60004  Edetic acid, Havidote, (ethylenedinitrilo)-tetraacetic acid    
Ethylene dibromide  106934  1,2-dibromoethane acetylene dibromide sym-dibromoethylene    
Ethylene dichloride  107062  1,2-dichloroethane sym-bichloroethane    
Ferric ammonium citrate  1185575  Ammonium ferric citrate    
Ferric ammonium oxalate  2944674  Ammonium ferric oxalate    
55488874     
Ferric chloride  7705080  Flores martis, iron trichloride    
Ferric fluoride  7783508     
Ferric nitrate  10421484  Iron nitrate    
Ferric sulfate  10028225  Ferric persulfate, ferric sesquisulfate, ferric tersulfate    
Ferrous ammonium sulfate  10045893  Mohr's salt, iron ammonium sulfate    
Ferrous chloride  7758943  Iron chloride, iron dichloride, iron protochloride    
Ferrous sulfate  7720787  Green vitriol    
7782630  Iron vitriol, iron sulfate, iron protosulfate    
Formaldehyde  50000  Methyl aldehyde, methanal, formalin    
Formic acid  64186  Methanoic acid    
Fumaric acid  110178  Trans-butenedioic acid, trans-1,2-ethylenedicarboxylic acid, boletic acid, allomaleic acid    
Furfural  98011  2-furaldehyde, pyromucic aldehyde    
Guthion  86500  Gusathion, azinphos-methyl    
Heptachlor  76448  Velsicol-104, Drinox, Heptagran    
Hexachlorocyclopentadiene  77474  Perchlorocyclopentadiene    
Hydrochloric acid  7647010  Hydrogen chloride, muriatic acid    
Hydrofluoric acid  7664393  Fluohydric acid    
Hydrogen cyanide  74908  Hydrocyanic acid    
Hydrogen sulfide  7783064  Hydrosulfuric acid sulfur hydride    
Isoprene  78795  2-methyl-1,3-butadiene    
Isopropanolamine dodecylbenzenesulfonate  42504461     
Kepone  143500  Chlordecone 1,1a,3,3a,4,5,5,5a,5b,6-decachlorooctahydro-1,3,4-metheno-2H-cyclobuta(cd)pentalen-
2-one    
Lead acetate  301042  Sugar of lead    
Lead arsenate  7784409     
7645252     
10102484     
Lead chloride  7758954     
Lead fluoborate  13814965  Lead fluoroborate    
Lead fluoride  7783462  Lead difluoride, plumbous fluoride    
Lead iodide  10101630     
Lead nitrate  10099748     
Lead stearate  7428480  Stearic acid lead salt    
1072351     
52652592     
Lead sulfate  7446142     
Lead sulfide  1314870  Galena    
Lead thiocyanate  592870  Lead sulfocyanate    
Lindane  58899  Gamma-BHC, gamma-benzene hexachloride    
Lithium chromate  14307358     
Malathion  121755  Phospothion    
Maleic acid  110167  Cis-butenedioic acid, cis-1,2-ethylenedicarboxylic acid, toxilic acid    
Maleic anhydride  108316  2,5-furandione, cis-butenedioic anhydride, toxilic anhydride    
Mercaptodimethur  203657  Mesurol    
Mercuric cyanide  592041  Mercury cyanide    
Mercuric nitrate  10045940  Mercury nitrate, mercury pernitrate    
Mercuric sulfate  7783359  Mercury sulfate, mercury persulfate    
Mercuric thiocyanate  592858  Mercury thiocyanate, mercuric sulfocyanate, mercuric sulfocyanide    
Mercurous nitrate  7782867     
10415755  Mercury protonitrate    
Methoxychlor  72435  DMDT, methoxy-DDT    
Methyl mercaptan  74931  Methanethiol, mercaptomethane, methyl sulfhydrate, thiomethyl alcohol    
Methyl methacrylate  80626  Methacrylic acid methyl ester, methyl-2-methyl-2-propenoate    
Methyl parathion  298000  Nitrox-80    
Mevinphos  7786347  Phosdrin    
Mexacarbate  315184  Zectran    
Monoethylamine  75047  Ethylamine, aminoethane    
Monomethylamine  74895  Methylamine, aminomethane    
Naled  300765  Dibrom    
Naphthalene  91203  White tar, tar camphor, naphthalin    
Naphthenic acid  1338245  Cyclohexanecarboxylic acid, hexahydrobenzoic acid    
Nickel ammonium sulfate  15699180  Ammonium nickel sulfate    
Nickel chloride  37211055  Nickelous chloride    
7718549     
Nickel hydroxide  12054487  Nickelous hydroxide    
Nickel nitrate  14216752     
Nickel sulfate  7786814  Nickelous sulfate    
Nitric acid  7697372  Aqua fortis    
Nitrobenzene  98953  Nitrobenzol, oil of mirbane    
Nitrogen dioxide  10102440  Nitrogen tetraoxide    
Nitrophenol (mixed)  25154556  Mononitrophenol  m-  554847  
 o-  88755  
 p-  100027  
Nitrotoluene  1321126   Ortho  88722  
 Meta  99081  
 Para  99990  
Paraformaldehyde  30525894  Paraform, Formagene, Triformol, polymerized formaldehyde, polyoxymethylene    
Parathion  56382  DNTP, Niran    
Pentachlorophenol  87865  PCP, Penta    
Phenol  108952  Carbolic acid, phenyl hydroxide, hydroxybenzene, oxybenzene    
Phosgene  75445  Diphosgene, carbonyl chloride, chloroformyl chloride    
Phosphoric acid  7664382  Orthophosphoric acid    
Phosphorus  7723140  Black phosphorus, red phosphorus, white phosphorus, yellow phosphorus    
Phosphorus oxychloride  10025873  Phosphoryl chloride, phosphorus chloride    
Phosphorus pentasulfide  1314803  Phosphoric sulfide, thiophosphoric anhydride, phosphorus persulfide    
Phosphorus trichloride  7719122  Phosphorous chloride    
Polychorinated biphenyls  1336363  PCB, Aroclor, polychlorinated diphenyls    
Potassium arsenate  7784410     
Potassium arsenite  10124502  Potassium metaarsenite    
Potassium bichromate  7778509  Potassium dichromate    
Potassium chromate  7789006     
Potassium cyanide  151508     
Potassium hydroxide  1310583  Potassium hydrate, caustic potash, potassa    
Potassium permanganate  7722647  Chameleon mineral    
Propargite  2312358  Omite    
Propionic acid  79094  Propanoic acid, methylacetic acid, ethylformic acid    
Propionic anhydride  123626  Propanoic anhydride, methylacetic anhydride    
Propylene oxide  75569  Propene oxide    
Pyrethrins  121299  Pyrethrin I    
121211  Pyrethrin II    
Quinoline  91225  1-benzazine, benzo(b)pyridine, leuocoline, chinoleine, leucol    
Resorcinol  108463  Resorcin, 1,3-benzenediol, meta-dihydroxybenzene    
Selenium oxide  7446084  Selenium dioxide    
Silver nitrate  7761888  Nitric acid silver (1+) salt lunar caustic    
Sodium  7440235  Natrium    
Sodium arsenate  7631892  Disodium arsenate    
Sodium arsenite  7784465  Sodium metaarsenite    
Sodium bichromate  10588019  Sodium dichromate    
Sodium bifluoride  1333831     
Sodium bisulfite  7631905  Sodium acid sulfite, sodium hydrogen sulfite    
Sodium chromate  7775113     
Sodium cyanide  143339     
Sodium dodecylbenzene-sulfonate  25155300     
Sodium fluoride  7681494  Villiaumite    
Sodium hydrosulfide  16721805  Sodium hydrogen sulfide    
Sodium hydroxide  1310732  Caustic soda, soda lye, sodium hydrate    
Sodium hypochlorite  7681529  Bleach    
10022705     
Sodium methylate  124414  Sodium methoxide    
Sodium nitrite  7632000     
Sodium phosphate, dibasic  7558794     
10039324     
10140655     
Sodium phosphate, tribasic  7785844     
7601549     
10101890     
10361894     
7758294     
10124568     
Sodium selenite  10102188     
7782823     
Strontium chromate  7789062     
Strychnine  57249     
Styrene  100425  Vinylbenzene, phenylethylene, styrol, styrolene, cinnamene, cinnamol    
Sulfuric acid  7664939  Oil of vitriol, oleum    
Sulfur monochloride  12771083  Sulfur chloride    
2,4,5-T acid  93765  2,4,5-trichlorophenoxyacetic acid    
2,4,5-T amines  6369966  Acetic acid (2,4,5-trichlorophenoxy)-compound with N,N-dimethylmethanamine (1:1)    
6369977  Acetic acid (2,4,5-trichlorophenoxy)-compound with N-methylmethanamine (1:1)    
1319728  Acetic acid (2,4,5-trichlorophenoxy)-compound with 1-amino-2-propanol (1:1)    
3813147  Acetic acid (2,4,5-trichlorophenoxy)-compound with 2,2'2”-nitrilotris [ethanol] (1:1)    
2,4,5-T esters  2545597  2,4,5-trichlorophenoxyacetic esters    
93798     
61792072     
1928478     
25168154     
2,4,5-T salts  13560991  Acetic acid (2,4,5-trichlorophenoxy)-sodium salt    
TDE  72548  DDD    
2,4,5-TP acid  93721  Propanoic acid 2-(2,4,5-trichlorophenoxy)    
2,4,5-TP esters  32534955  Propanoic acid, 2-(2,4,5-trichlorophenoxy)-, isooctyl ester    
Tetraethyl lead  78002  Lead tetraethyl, TEL    
Tetraethyl pyrophosphate  107493  TEPP    
Thallium sulfate  10031591     
7446186     
Toluene  108883  Toluol, methylbenzene, phenylmethane, Methacide    
Toxaphene  8001352  Camphechlor    
Trichlorfon  52686  Dipterex
Dylox    
Trichlorethylene  79016  Ethylene trichloride    
Trichlorophenol  25167822  Collunosol, Dowicide 2 or 2S, Omal, Phenachlor  (2,3,4-)
(2,3,5-)
(2,3,6-)
(2,4,5-)
(2,4,6-)
(3,4,5-)  15950660
933788
933755
95954
88062
609198  
Triethanolamine dodecylbenzenesulfonate  27323417     
Triethylamine  121448     
Trimethylamine  75503  TMA    
Uranyl acetate  541093     
Uranyl nitrate  10102064     
36478769     
Vanadium pentoxide  1314621  Vanadic anhydride, vanadic acid anhydride    
Vanadyl sulfate  27774136  Vanadic sulfate, vanadium sulfate    
Vinyl acetate  108054  Acetic acid ethylene ether    
Vinylidene chloride  75354  1,1-dichlorethylene    
1,1-dichloroethene    
Xylene (mixed)  1330207  Dimethylbenzene  m-  108383  
Xylol  o-  95476  
 p-  106423  
Xylenol  1300716  Dimethylphenol, hydroxydimethylbenzene    
Zinc acetate  557346     
Zinc ammonium chloride  14639975     
14639986     
52628258     
Zinc borate  1332076     
Zinc bromide  7699458     
Zinc carbonate  3486359     
Zinc chloride  7646857  Butter of zinc    
Zinc cyanide  557211     
Zinc fluoride  7783495     
Zinc formate  557415     
Zinc hydrosulfite  7779864     
Zinc nitrate  7779886     
Zinc phenolsulfonate  127822  Zinc sulfocarbolate    
Zinc phosphide  1314847     
Zinc silicofluoride  16871719  Zinc fluosilicate    
Zinc sulfate  7733020  White vitriol, zinc vitriol, white copperas    
Zirconium nitrate  13746899     
Zirconium potassium fluoride  16923958     
Zirconium sulfate  14644612  Disulfatozirconic acid    
Zirconium tetrachloride  10026116     

Table 116.4B—List of Hazardous Substances by CAS Number

CAS No.  Common name  
50000  Formaldehyde  
50293  DDT  
51285  2,4-Dinitrophenol  
52686  Trichlorfon  
56382  Parathion  
56724  Coumaphos  
57249  Strychnine  
57749  Chlordane  
58899  Lindane  
60004  Ethylenediaminetetraacetic  
 acid (EDTA)  
60571  Dieldrin  
62533  Aniline  
62737  Dichlorvos  
63252  Carbaryl  
64186  Formic acid  
64197  Acetic acid  
65850  Benzoic acid  
67663  Chloroform  
71432  Benzene  
72208  Endrin  
72435  Methoxychlor  
72548  TDE  
74895  Monomethylamine  
74908  Hydrogen cyanide  
74931  Methyl mercaptan  
75047  Monoethylamine  
75070  Acetaldehyde  
75150  Carbon disulfide  
75207  Calcium carbide  
75445  Phosgene  
75503  Trimethylamine  
75649  tert-Butylamine  
75865  Acetone cyanohydrin  
75990  2,2-Dichloropropionic acid  
76448  Heptachlor  
78002  Tetraethyl lead  
78795  Isoprene  
78819  iso-Butylamine  
79094  Propionic acid  
79312  iso-Butyric acid  
79367  Acetyl chloride  
80626  Methyl methacrylate  
85007  Diquat  
86500  Guthion  
87865  Pentachlorophenol  
88755  o-Nitrophenol  
91203  Naphthalene  
91225  Quinoline  
93765  2,4,5-T acid  
93798  2,4,5-T ester  
94111  2,4-D ester  
94757  2,4-D acid  
94791  2,4-D ester  
94804  2,4-D Butyl ester  
95476  o-Xylene  
95487  o-Cresol  
98011  Furfural  
98884  Benzoyl chloride  
98953  Nitrobenzene  
99650  m-Dinitrobenzene  
100027  p-Nitrophenol  
100254  p-Dinitrobenzene  
100414  Ethylbenzene  
100425  Styrene  
100447  Benzyl chloride  
100470  Benzonitrile  
105464  sec-Butyl acetate  
106423  p-Xylene  
106445  p-Cresol  
107028  Acrolein  
107051  Allyl chloride  
107131  Acrylonitrile  
107153  Ethylenediamine  
107186  Allyl alcohol  
107493  Tetraethyl pyrophosphate  
107926  n-Butyric acid  
108054  Vinyl acetate  
108247  Acetic anhydride  
108316  Maleic anhydride  
108383  m-Xylene  
108394  m-Cresol  
108463  Resorcinol  
108883  Toluene  
108907  Chlorobenzene  
108952  Phenol  
109739  n-Butylamine  
109897  Diethylamine  
110167  Maleic acid  
110178  Fumaric acid  
110190  iso-Butyl acetate  
110827  Cyclohexane  
115297  Endosulfan  
115322  Dicofol  
117806  Dichlone  
121211  Pyrethrin  
121299  Pyrethrin  
121448  Triethylamine  
121755  Malathion  
123626  Propionic anhydride  
123864  n-Butyl acetate  
123922  iso-Amyl acetate  
124403  Dimethylamine  
124414  Sodium methylate  
127822  Zinc phenolsulfonate  
133062  Captan  
142712  Cupric acetate  
143339  Sodium cyanide  
151508  Potassium cyanide  
298000  Methyl parathion  
298044  Disulfoton  
300765  Naled  
301042  Lead acetate  
309002  Aldrin  
315184  Mexacarbate  
329715  2,5-Dinitrophenol  
330541  Diuron  
333415  Diazinon  
506774  Cyanogen chloride  
506876  Ammonium carbonate  
506967  Acetyl bromide  
513495  sec-Butylamine  
528290  o-Dinitrobenzene  
540885  tert-Butyl acetate  
541093  Uranyl acetate  
542621  Barium cyanide  
543908  Cadmium acetate  
544183  Cobaltous formate  
554847  m-Nitrophenol  
557211  Zinc cyanide  
557346  Zinc acetate  
557415  Zinc formate  
563122  Ethion  
573568  2,6-Dinitrophenol  
592018  Calcium cyanide  
592041  Mercuric cyanide  
592858  Mercuric thiocyanate  
592870  Lead thiocyanate  
625161  tert-Amyl acetate  
626380  sec-Amyl acetate  
628637  n-Amyl acetate  
631618  Ammonium acetate  
815827  Cupric tartrate  
1066304  Chromic acetate  
1066337  Ammonium bicarbonate  
1072351  Lead stearate  
1111780  Ammonium carbamate  
1185575  Ferric ammonium citrate  
1194656  Dichlobenil  
1300716  Xylenol  
1303282  Arsenic pentoxide  
1303328  Arsenic disulfide  
1303339  Arsenic trisulfide  
1309644  Antimony trioxide  
1310583  Potassium hydroxide  
1310732  Sodium hydroxide  
1314621  Vanadium pentoxide  
1314803  Phosphorus pentasulfide  
1314847  Zinc phosphide  
1314870  Lead sulfide  
1319773  Cresol (mixed)  
1320189  2,4-D ester  
1327533  Arsenic trioxide  
1330207  Xylene  
1332076  Zinc borate  
1333831  Sodium bifluoride  
1336216  Ammonium hydroxide  
1336363  Polychlorinated biphenyls  
1338245  Naphthenic acid  
1341497  Ammonium bifluoride  
1762954  Ammonium thiocyanate  
1863634  Ammonium benzoate  
1918009  Dicamba  
1928387  2,4-D esters  
1928478  2,4,5-T ester  
1928616  2,4-D ester  
1929733  2,4-D ester  
2545597  2,4,5-T ester  
2764729  Diquat  
2921882  Chlorpyrifos  
2944674  Ferric ammonium oxalate  
2971382  2,4-D ester  
3012655  Ammonium citrate, dibasic  
3164292  Ammonium tartrate  
3251238  Cupric nitrate  
3486359  Zinc carbonate  
5893663  Cupric oxalate  
5972736  Ammonium oxalate  
6009707  Ammonium oxalate  
6369966  2,4,5-T ester  
7428480  Lead stearate  
7440235  Sodium  
7446084  Selenium oxide  
7446142  Lead sulfate  
7447394  Cupric chloride  
7558794  Sodium phosphate, dibasic  
7601549  Sodium phosphate, tribasic  
7631892  Sodium arsenate  
7631905  Sodium bisulfite  
7632000  Sodium nitrite  
7645252  Lead arsenate  
7646857  Zinc chloride  
7647010  Hydrochloric acid  
7647189  Antimony pentachloride  
7664382  Phosphoric acid  
7664393  Hydrofluoric acid  
7664417  Ammonia  
7664939  Sulfuric acid  
7681494  Sodium fluoride  
7681529  Sodium hypochlorite  
7697372  Nitric acid  
7699458  Zinc bromide  
7705080  Ferric chloride  
7718549  Nickel chloride  
7719122  Phosphorus trichloride  
7720787  Ferrous sulfate  
7722647  Potassium permanganate  
7723140  Phosphorus  
7733020  Zinc sulfate  
7758294  Sodium phosphate, tribasic  
7758943  Ferrous chloride  
7758954  Lead chloride  
7758987  Cupric sulfate  
7773060  Ammonium sulfamate  
7775113  Sodium chromate  
7778441  Calcium arsenate  
7778509  Potassium bichromate  
7778543  Calcium hypochlorite  
7779864  Zinc hydrosulfite  
7779886  Zinc nitrate  
7782505  Chlorine  
7782630  Ferrous sulfate  
7782823  Sodium selenite  
7782867  Mercurous nitrate  
7783359  Mercuric sulfate  
7783462  Lead fluoride  
7783495  Zinc fluoride  
7783508  Ferric fluoride  
7783564  Antimony trifluoride  
7784341  Arsenic trichloride  
7784409  Lead arsenate  
7784410  Potassium arsenate  
7784465  Sodium arsenite  
7785844  Sodium phosphate, tribasic  
7786347  Mevinphos  
7786814  Nickel sulfate  
7787475  Beryllium chloride  
7787497  Beryllium fluoride  
7787555  Beryllium nitrate  
7788989  Ammonium chromate  
7789006  Potassium chromate  
7789062  Strontium chromate  
7789095  Ammonium bichromate  
7789426  Cadmium bromide  
7789437  Cobaltous bromide  
7789619  Antimony tribromide  
7790945  Chlorosulfonic acid  
8001352  Toxaphene  
10022705  Sodium hypochlorite  
10025873  Phosphorus oxychloride  
10025919  Antimony trichloride  
10026116  Zirconium tetrachloride  
10028225  Ferric sulfate  
10028247  Sodium phosphate, dibasic  
10039324  Sodium phosphate, dibasic  
10043013  Aluminum sulfate  
10045893  Ferrous ammonium sulfate  
10045940  Mercuric nitrate  
10049055  Chromous chloride  
10099748  Lead nitrate  
10101538  Chromic sulfate  
10101630  Lead iodide  
10101890  Sodium phosphate, tribasic  
10102064  Uranyl nitrate  
10102188  Sodium selenite  
10102440  Nitrogen dioxide  
10102484  Lead arsenate  
10108642  Cadmium chloride  
10124502  Potassium arsenite  
10124568  Sodium phosphate, tribasic  
10140655  Sodium phosphate, dibasic  
10192300  Ammonium bisulfite  
10196040  Ammonium sulfite  
10361894  Sodium phosphate, tribasic  
10380297  Cupric sulfate, ammoniated  
10415755  Mercurous nitrate  
10421484  Ferric nitrate  
10588019  Sodium bichromate  
11115745  Chromic acid  
12002038  Cupric acetoarsenite  
12054487  Nickel hydroxide  
12125018  Ammonium fluoride  
12125029  Ammonium chloride  
12135761  Ammonium sulfide  
12771083  Sulfur chloride  
13597994  Beryllium nitrate  
13746899  Zirconium nitrate  
13765190  Calcium chromate  
13814965  Lead fluoborate  
13826830  Ammonium fluoborate  
13952846  sec-Butylamine  
14017415  Cobaltous sulfamate  
14216752  Nickel nitrate  
14258492  Ammonium oxalate  
14307358  Lithium chromate  
14307438  Ammonium tartrate  
14639975  Zinc ammonium chloride  
14639986  Zinc ammonium chloride  
14644612  Zirconium sulfate  
15699180  Nickel ammonium sulfate  
16721805  Sodium hydrosulfide  
16871719  Zinc silicofluoride  
16919190  Ammonium silicofluoride  
16923958  Zirconium potassium fluoride  
25154545  Dinitrobenzene  
25154556  Nitrophenol  
25155300  Sodium dodecylbenzenesulfonate  
25167822  Trichlorophenol  
25168154  2,4,5-T ester  
25168267  2,4-D ester  
26264062  Calcium dodecylbenzenesulfonate  
27176870  Dodecylbenzenesulfonic acid  
27323417  Triethanolamine dodecylbenzenesulfonate  
27774136  Vanadyl sulfate  
28300745  Antimony potassium tartrate  
30525894  Paraformaldehyde  
36478769  Uranyl nitrate  
37211055  Nickel chloride  
42504461  Dodecylbenzenesulfonate isopropanolamine  
52628258  Zinc ammonium chloride  
52740166  Calcium arsenite  
53467111  2,4-D ester  
55488874  Ferric ammonium oxalate  
61792072  2,4,5-T ester  

[43 FR 10474, Mar. 13, 1978; 43 FR 27533, June 26, 1978, as amended at 44 FR 10268, Feb. 16, 1979; 44 FR
65400, Nov. 13, 1979; 44 FR 66602, Nov. 20, 1979; 54 FR 33482, Aug. 14, 1989]


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