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40 C.F.R. § 116.4

Designation of hazardous substances.

§ 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.
Acetaldehyde75070Ethanal, ethyl aldehyde, acetic aldehyde
Acetic acid64197Glacial acetic acid, vinegar acid
Acetic anhydride108247Acetic oxide, acetyl oxide
Acetone cyanohydrin758652-methyllactonitrile, alpha-hydroxyisobutyronitrile
Acetyl bromide506967
Acetyl chloride79367
Acrolein1070282-propenal, acrylic aldehyde, acrylaldehyde, acraldehyde
Acrylonitrile107131Cyanoethylene, Fumigrain, Ventox, propeneitrile, vinyl cyanide
Adipic acid124049Hexanedioic acid
Aldrin309002Octalene, HHDN
Allyl alcohol1071862-propen-1-ol, 1-propenol-3, vinyl carbinol
Allyl chloride1070513-chloropropene, 3-chloropropylene, Chlorallylene
Aluminum sulfate10043013Alum
Ammonia7664417
Ammonium acetate631618Acetic acid ammonium, salt
Ammonium benzoate1863634
Ammonium bicarbonate1066337Acid ammonium carbonate, ammonium hydrogen carbonate
Ammonium bichromate7789095
Ammonium bifluoride1341497Acid ammonium fluoride, ammonium hydrogen fluoride
Ammonium bisulfite10192300
Ammonium carbamate1111780Ammonium aminoformate
Ammonium carbonate506876
Ammonium chloride12125029Ammonium muriate, sal ammoniac, salmiac, Amchlor
Ammonium chromate7788989
Ammonium citrate dibasic3012655Diammonium citrate, citric acid diammonium salt
Ammonium fluoborate13826830Ammonium fluoroborate, ammonium borofluoride
Ammonium fluoride12125018Neutral ammonium fluoride
Ammonium hydroxide1336216
Ammonium oxalate6009707
5972736
14258492
Ammonium silicofluoride16919190Ammonium fluosilicate
Ammonium sulfamate7773060Ammate, AMS, ammonium amidosulfate
Ammonium sulfide12135761
Ammonium sulfite10196040
10192300
Ammonium tartrate3164292Tartaric acid ammonium salt
14307438
Ammonium thiocyanate1762954Ammonium rhodanide, ammonium sulfocyanate, ammonium sulfocyanide
Amly acetate628637Amylacetic esteriso-123922
Pear oilsec-626380
Banana oiltert-625161
Aniline62533Aniline oil, phenylamine, aminobenzene, aminophen, kyanol
Antimony pentachloride7647189
Antimony potassium tartrate28300745Tartar emetic, tartrated antimony, tartarized antimony, potassium antimonyltartrate
Antimony tribromide7789619
Antimony trichloride10025919Butter of antimony
Antimony trifluoride7783564Antimony fluoride
Antimony trioxide1309644Diantimony trioxide, flowers of antimony
Arsenic disulfide1303328Red arsenic sulfide
Arsenic pentoxide1303282Arsenic acid anhydride, arsenic oxide
Arsenic trichloride7784341Arsenic chloride, arsenious chloride, arsenous chloride, butter of arsenic
Arsenic trioxide1327533Arsenious acid, arsenious oxide, white arsenic
Arsenic trisulfide1303339Arsenious sulfide, yellow arsenic sulfide
Barium cyanide542621
Benzene71432Cyclohexatriene, benzol
Benzoic acid65850Benzenecarboxylic acid, phenylformic acid, dracylic acid
Benzonitrile100470Phenyl cyanide, cyanobenzene
Benzoyl chloride98884Benzenecarbonyl chloride
Benzyl chloride100447
Beryllium chloride7787475
Beryllium fluoride7787497
Beryllium nitrate7787555
13597994
Butyl acetate123864Acetic acid butyl esteriso-110190
sec-105464
tert-540885
Butylamine1097391-aminobutaneiso-78819
sec-513495
sec-13952846
tert-75649
n/butyl phthalate847421.2-benzenedicarboxylic acid, dibutyl ester, dibutyl phthalate
Butyric acid107926Butanoic acid, ethylacetic acidiso-79312
Cadmium acetate543908
Cadmium bromide7789426
Cadmium chloride10108642
Calcium arsenate7778441Tricalcium orthoarsenate
Calcium arsenite52740166
Calcium carbide75207Carbide, acetylenogen
Calcium chromate13765190Calcium chrome yellow, geblin, yellow ultramarine
Calcium cyanide592018
Calcium dodecylbenzenesulfonate26264062
Calcium hypochlorite7778543
Captan133062Orthocide-406, SR–406, Vancide-89
Carbaryl63252Sevin
Carbofuran1563662Furadan
Carbon disulfide75150Carbon bisulfide, dithiocarbonic anhydride
Carbon tetrachloride56235Tetrachloromethane Perchloromethane
Chlordane57749Toxichlor, chlordan
Chlorine75003
Chlorobenzene108907Monochlorobenzene, benzene chloride
Chloroform67663Trichloromethane
Chlorpyrifos2921882Dursban
Chlorosulfonic acid7790945Sulfuric chlorohydrin
Chromic acetate1066304
Chromic acid11115745Chromic anhydride, chromium trioxide
Chromic sulfate10101538
Chromous chloride10049055
Cobaltous bromide7789437Cobalt bromide
Coabaltous formate544183Cobalt formate
Cobaltous sulfamate14017415Cobalt sulfamate
Coumaphos56724Co-Ral
Cresol1319773Cresylic acidm-108394
Hydroxytolueneo-95487
p-106445
Crotonaldehyde41703032-butenal propylene aldelhyde
Cupric acetate142712Copper acetate, crystalized verdigris
Cupric acetoarsenite12002038Copper acetoarsenite, copper acetate arsenite, Paris green
Cupric chloride7447394Copper chloride
Cupric nitrate3251238Copper nitrate
Cupric oxalate5893663Copper oxalate
Cupric sulfate7758987Copper sulfate
Cupric sulfate, ammoniated10380297Ammoniated copper sulfate
Cupric tartrate815827Copper tartrate
Cyanogen chloride506774
Cyclohexane110827Hexahydrobenzene, hexamethylene, hexanaphthene
2,4-D acid947572,4-dichlorophenoxyacetic acid
2,4-D ester941112,4-dichlorophenoxyacetic acid ester
94791
94804
1320189
1928387
1928616
1929733
2971382
25168267
53467111
DDT50293p,p′-DDT
Diazinon333415Dipofene, Diazitol, Basudin, Spectracide
Dicamba19180092-methoxy-3,6-dichlorobenzoic acid
Dichlobenil11946562,6-dichlorobenzonitrile, 2,6-DBN
Dichlone117806Phygon, dichloronaphthoquinone
Dichlorobenzene25321226Di-chloricideOrtho95501
Paramoth (Para)Para106467
Dichloropropane26638197Propylene dichloride1,178999
1,278875
1,3142289
Dichloropropene269522381,3542756
2,378886
Dichloropropene-dichloropropane (mixture)8003198D-D mixture Vidden D
2,2-Dichloropropionic acid75990Dalapon
Dichlorvos627372,2-dichlorovinyl dimethyl phosphate, Vapona
Dicofol115322Di(p-chlorophenyl)-trichloromethylcarbinol, DTMC, dicofol
Dieldrin60571Alvit
Diethylamine109897
Dimethylamine124403
Dinitrobenzene (mixed)25154545Dinitrobenzolm-99650
o-528290
p-100254
Dinitrophenol51285Aldifen(2,5-)329715
(2,4-)
(2,6-)573568
Dinitrotoluene25321146DNT2,4121142
2,6606202
3,4610399
Diquat85007Aquacide
2764729Dextrone, Reglone, Diquat dibromide
Disulfoton298044Di-syston
Diuron330541DCMU, DMU
Dodecylbenzenesulfonic acid27176870
Endosulfan115297Thiodan
Endrin72208Mendrin, Compound 269
Epichlorohydrin106898-chloropropylene oxide
Ethion563122Nialate, ethyl methylene, phosphorodithioate
Ethylbenzene100414Phenylethane
Ethylenediamine1071531,2-diaminoethane
Ethylenediamine-tetraacetic acid (EDTA)60004Edetic acid, Havidote, (ethylenedinitrilo)-tetraacetic acid
Ethylene dibromide1069341,2-dibromoethane acetylene dibromide sym-dibromoethylene
Ethylene dichloride1070621,2-dichloroethane sym-bichloroethane
Ferric ammonium citrate1185575Ammonium ferric citrate
Ferric ammonium oxalate2944674Ammonium ferric oxalate
55488874
Ferric chloride7705080Flores martis, iron trichloride
Ferric fluoride7783508
Ferric nitrate10421484Iron nitrate
Ferric sulfate10028225Ferric persulfate, ferric sesquisulfate, ferric tersulfate
Ferrous ammonium sulfate10045893Mohr's salt, iron ammonium sulfate
Ferrous chloride7758943Iron chloride, iron dichloride, iron protochloride
Ferrous sulfate7720787Green vitriol
7782630Iron vitriol, iron sulfate, iron protosulfate
Formaldehyde50000Methyl aldehyde, methanal, formalin
Formic acid64186Methanoic acid
Fumaric acid110178Trans-butenedioic acid, trans-1,2-ethylenedicarboxylic acid, boletic acid, allomaleic acid
Furfural980112-furaldehyde, pyromucic aldehyde
Guthion86500Gusathion, azinphos-methyl
Heptachlor76448Velsicol-104, Drinox, Heptagran
Hexachlorocyclopentadiene77474Perchlorocyclopentadiene
Hydrochloric acid7647010Hydrogen chloride, muriatic acid
Hydrofluoric acid7664393Fluohydric acid
Hydrogen cyanide74908Hydrocyanic acid
Hydrogen sulfide7783064Hydrosulfuric acid sulfur hydride
Isoprene787952-methyl-1,3-butadiene
Isopropanolamine dodecylbenzenesulfonate42504461
Kepone143500Chlordecone 1,1a,3,3a,4,5,5,5a,5b,6-decachlorooctahydro-1,3,4-metheno-2H-cyclobuta(cd)pentalen-2-one
Lead acetate301042Sugar of lead
Lead arsenate7784409
7645252
10102484
Lead chloride7758954
Lead fluoborate13814965Lead fluoroborate
Lead fluoride7783462Lead difluoride, plumbous fluoride
Lead iodide10101630
Lead nitrate10099748
Lead stearate7428480Stearic acid lead salt
1072351
52652592
Lead sulfate7446142
Lead sulfide1314870Galena
Lead thiocyanate592870Lead sulfocyanate
Lindane58899Gamma-BHC, gamma-benzene hexachloride
Lithium chromate14307358
Malathion121755Phospothion
Maleic acid110167Cis-butenedioic acid, cis-1,2-ethylenedicarboxylic acid, toxilic acid
Maleic anhydride1083162,5-furandione, cis-butenedioic anhydride, toxilic anhydride
Mercaptodimethur203657Mesurol
Mercuric cyanide592041Mercury cyanide
Mercuric nitrate10045940Mercury nitrate, mercury pernitrate
Mercuric sulfate7783359Mercury sulfate, mercury persulfate
Mercuric thiocyanate592858Mercury thiocyanate, mercuric sulfocyanate, mercuric sulfocyanide
Mercurous nitrate7782867
10415755Mercury protonitrate
Methoxychlor72435DMDT, methoxy-DDT
Methyl mercaptan74931Methanethiol, mercaptomethane, methyl sulfhydrate, thiomethyl alcohol
Methyl methacrylate80626Methacrylic acid methyl ester, methyl-2-methyl-2-propenoate
Methyl parathion298000Nitrox-80
Mevinphos7786347Phosdrin
Mexacarbate315184Zectran
Monoethylamine75047Ethylamine, aminoethane
Monomethylamine74895Methylamine, aminomethane
Naled300765Dibrom
Naphthalene91203White tar, tar camphor, naphthalin
Naphthenic acid1338245Cyclohexanecarboxylic acid, hexahydrobenzoic acid
Nickel ammonium sulfate15699180Ammonium nickel sulfate
Nickel chloride37211055Nickelous chloride
7718549
Nickel hydroxide12054487Nickelous hydroxide
Nickel nitrate14216752
Nickel sulfate7786814Nickelous sulfate
Nitric acid7697372Aqua fortis
Nitrobenzene98953Nitrobenzol, oil of mirbane
Nitrogen dioxide10102440Nitrogen tetraoxide
Nitrophenol (mixed)25154556Mononitrophenolm-554847
o-88755
p-100027
Nitrotoluene1321126Ortho88722
Meta99081
Para99990
Paraformaldehyde30525894Paraform, Formagene, Triformol, polymerized formaldehyde, polyoxymethylene
Parathion56382DNTP, Niran
Pentachlorophenol87865PCP, Penta
Phenol108952Carbolic acid, phenyl hydroxide, hydroxybenzene, oxybenzene
Phosgene75445Diphosgene, carbonyl chloride, chloroformyl chloride
Phosphoric acid7664382Orthophosphoric acid
Phosphorus7723140Black phosphorus, red phosphorus, white phosphorus, yellow phosphorus
Phosphorus oxychloride10025873Phosphoryl chloride, phosphorus chloride
Phosphorus pentasulfide1314803Phosphoric sulfide, thiophosphoric anhydride, phosphorus persulfide
Phosphorus trichloride7719122Phosphorous chloride
Polychorinated biphenyls1336363PCB, Aroclor, polychlorinated diphenyls
Potassium arsenate7784410
Potassium arsenite10124502Potassium metaarsenite
Potassium bichromate7778509Potassium dichromate
Potassium chromate7789006
Potassium cyanide151508
Potassium hydroxide1310583Potassium hydrate, caustic potash, potassa
Potassium permanganate7722647Chameleon mineral
Propargite2312358Omite
Propionic acid79094Propanoic acid, methylacetic acid, ethylformic acid
Propionic anhydride123626Propanoic anhydride, methylacetic anhydride
Propylene oxide75569Propene oxide
Pyrethrins121299Pyrethrin I
121211Pyrethrin II
Quinoline912251-benzazine, benzo(b)pyridine, leuocoline, chinoleine, leucol
Resorcinol108463Resorcin, 1,3-benzenediol, meta-dihydroxybenzene
Selenium oxide7446084Selenium dioxide
Silver nitrate7761888Nitric acid silver (1 + ) salt lunar caustic
Sodium7440235Natrium
Sodium arsenate7631892Disodium arsenate
Sodium arsenite7784465Sodium metaarsenite
Sodium bichromate10588019Sodium dichromate
Sodium bifluoride1333831
Sodium bisulfite7631905Sodium acid sulfite, sodium hydrogen sulfite
Sodium chromate7775113
Sodium cyanide143339
Sodium dodecylbenzene-sulfonate25155300
Sodium fluoride7681494Villiaumite
Sodium hydrosulfide16721805Sodium hydrogen sulfide
Sodium hydroxide1310732Caustic soda, soda lye, sodium hydrate
Sodium hypochlorite7681529Bleach
10022705
Sodium methylate124414Sodium methoxide
Sodium nitrite7632000
Sodium phosphate, dibasic7558794
10039324
10140655
Sodium phosphate, tribasic7601549
10101890
10361894
Sodium selenite10102188
7782823
Strontium chromate7789062
Strychnine57249
Styrene100425Vinylbenzene, phenylethylene, styrol, styrolene, cinnamene, cinnamol
Sulfuric acid7664939Oil of vitriol, oleum
Sulfur monochloride12771083Sulfur chloride
2,4,5-T acid937652,4,5-trichlorophenoxyacetic acid
2,4,5-T amines6369966Acetic acid (2,4,5-trichlorophenoxy)-compound with N,N-dimethylmethanamine (1:1)
6369977Acetic acid (2,4,5-trichlorophenoxy)-compound with N-methylmethanamine (1:1)
1319728Acetic acid (2,4,5-trichlorophenoxy)-compound with 1-amino-2-propanol (1:1)
3813147Acetic acid (2,4,5-trichlorophenoxy)-compound with 2,2'2”-nitrilotris [ethanol] (1:1)
2,4,5-T esters25455972,4,5-trichlorophenoxyacetic esters
93798
61792072
1928478
25168154
2,4,5–T salts13560991Acetic acid (2,4,5–trichlorophenoxy)-sodium salt
TDE72548DDD
2,4,5–TP acid93721Propanoic acid 2–(2,4,5–trichlorophenoxy)
2,4,5–TP esters32534955Propanoic acid, 2–(2,4,5–trichlorophenoxy)-, isooctyl ester
Tetraethyl lead78002Lead tetraethyl, TEL
Tetraethyl pyrophosphate107493TEPP
Thallium sulfate10031591
7446186
Toluene108883Toluol, methylbenzene, phenylmethane, Methacide
Toxaphene8001352Camphechlor
Trichlorfon52686Dipterex
Dylox
Trichlorethylene79016Ethylene trichloride
Trichlorophenol25167822Collunosol, 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 dodecylbenzenesulfonate27323417
Triethylamine121448
Trimethylamine75503TMA
Uranyl acetate541093
Uranyl nitrate10102064
36478769
Vanadium pentoxide1314621Vanadic anhydride, vanadic acid anhydride
Vanadyl sulfate27774136Vanadic sulfate, vanadium sulfate
Vinyl acetate108054Acetic acid ethylene ether
Vinylidene chloride753541,1–dichlorethylene
1,1–dichloroethene
Xylene (mixed)1330207Dimethylbenzenem-108383
Xylolo-95476
p-106423
Xylenol1300716Dimethylphenol, hydroxydimethylbenzene
Zinc acetate557346
Zinc ammonium chloride14639975
14639986
52628258
Zinc borate1332076
Zinc bromide7699458
Zinc carbonate3486359
Zinc chloride7646857Butter of zinc
Zinc cyanide557211
Zinc fluoride7783495
Zinc formate557415
Zinc hydrosulfite7779864
Zinc nitrate7779886
Zinc phenolsulfonate127822Zinc sulfocarbolate
Zinc phosphide1314847
Zinc silicofluoride16871719Zinc fluosilicate
Zinc sulfate7733020White vitriol, zinc vitriol, white copperas
Zirconium nitrate13746899
Zirconium potassium fluoride16923958
Zirconium sulfate14644612Disulfatozirconic acid
Zirconium tetrachloride10026116
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