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How to Store and Dispose of Extremely Hazardous Chemical Waste

Learn how to contain, store, and dispose of extremely hazardous chemical waste at UC San Diego.

Is it "hazardous" or "extremely hazardous"?

Procedures and requirements are different for hazardous versus extremely hazardous chemical waste. Storage time and quantity limits for extremely hazardous chemical waste are very strict. Keep UC San Diego in compliance. Request a hazardous waste collection before time or quantity limits are reached. 

Check the List of Hazardous and Extremely Hazardous Wastes below this section to make a waste determination. 

  • If your material is listed as extremely hazardous waste concentration, follow these guidelines:  
    • Empty containers must be labeled with a hazardous waste tag and collected by EH&S for disposal. 
    • It must be collected within 90 days from when waste is first put into containers. 
    • Up to 1 quart may be accumulated before it must be collected. 
      • >= 1 quart must be collected within 3 days 
  • If your material is listed as hazardous waste concentration — not extremely hazardous — proceed to How to Store and Dispose of Hazardous Chemical Waste.

List of Hazardous and Extremely Hazardous Wastes

(Downloadable Excel Version)

List of Hazardous and Extremely Hazardous Wastes
Chemical Name Chemical Abstract
Service Number
Extremely Hazardous Waste
Hazardous Waste Concentration
1-(o-Chlorophenyl)thiourea 5344-82-1 ANY ANY
1,1,1-Trichloro-2, -bis(p-methoxyphenyl)ethane   ANY ANY
1,1a,2,2,3,3a,4,5,5,5a,5b,6-Dodecachlorooctahydro-1,3,4-metheno-1H-cyclobuta (cd) pentalene, Dechlorane   ANY ANY
1,1a,3,3a,4,5,5,5a,5b,6-Decachloro--octahydro-1,2,4-metheno-2H-cyclobuta (cd) pentalen-2-one, chlorecone   ANY ANY
1,1-Dimethylhydrazine 57-14-7 ANY ANY
1,2,3,4,10,10-Hexachloro-6,7-epoxy-1,4,4,4a,5,6,7,8,8a-octahydro-1,4-endo-endo-5,8-dimethanonaph-thalene   ANY ANY
1,2,3-Propanetriol, trinitrate 55-63-0 ANY ANY
1,2,4,5,6,7,8,8-Octachloro-4,7-methano-3a,4,7,7a-tetra- hydro- indane   ANY ANY
1,2-Benzenediol, 4-[1-hydroxy-2-(methylamino)ethyl]- 51-43-4 ANY ANY
1,2-Dibromo-3-chloropropane 96-12-8 0.1%/wt 0.001%/wt
1,2-Propylenimine 75-55-8 ANY ANY
1,3,4,5,6,7,8,8-Octachloro-1,3,3a,4,7,7a-hexahydro-4,7-methanoisobenzofuran   ANY ANY
1,3-Dithiolane-2-carboxaldehyde, 2,4-dimethyl-, O- [(methylamino)-carbonyl]oxime 26419-73-8 ANY ANY
1,4,5,8-Dimethanonaphthalene, 1,2,3,4,10,10-hexa- chloro-1,4,4a,5,8,8a,-hexahydro-,(1alpha,4alpha,4abeta,5alpha,8alpha,8 abeta)- 309-00-2 ANY ANY
1,4,5,8-Dimethanonaphthalene, 1,2,3,4,10,10-hexa- chloro-1,4,4a,5,8,8a-hexahydro-,(1alpha,4alpha,4abeta,5beta,8beta,8abeta)- 465-73-6 ANY ANY
1,4-Benzoquinone   ANY ANY
1-Acetyl-2-thiourea 591-08-2 ANY ANY
2-(Diethoxyphosphinylimino)-1,3-dithio-lane   ANY ANY
2,3,7,8-Tetrachlorodibenzo-p-dioxin 1746-01-6 ANY ANY
2,3-Dihydro-2,2-dimethyl-7-benzofuranylmethylcarbamate   ANY ANY
2,4,5-T 93-76-5 ANY ANY
2,4,5-Trichlorophenoxyacetic acid   ANY ANY
2,4-D, salts & esters 194-75-7 ANY ANY
2,4-Dichlorophenoxyacetic acid   ANY ANY
2,4-Dinitro-6-sec-butylphenol   ANY ANY
2,4-Dinitrophenol 51-28-5 ANY ANY
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-,alpha,7beta, 7aalpha)-b]oxirene, 3,4,5,6,9,9-hexachloro-1a,2,2a,3,6,6a,7,7a-octahydro-,(1aalpha,2beta,2abeta,3alpha,6alpha,6abeta,7beta, 7aalpha)-, & metabolites  72-20-8 ANY ANY
2-AAF  53-96-3 0.1%/wt 0.001%/wt
2-Acetylaminofluorene 53-96-3 0.1%/wt 0.001%/wt
2-Aminopyridine   ANY ANY
2-Butanone, 3,3-dimethyl-1(methylthio)-, O-[methylamino)carbonyl] oxime 39196-18-4 ANY ANY
2-Butenal 4170-30-3 ANY ANY
2-Carbomethoxy-1-methylvinyldimethylphosphate   ANY ANY
2-Chloro-1-(2,4-dichlorophenyl) vinyl diethyl phosphate   ANY ANY
2-Chloro-2-diethyl--carbamoyl-1-methylvinyl dimethyl phosphate   ANY ANY
2-Chloro-4,5-dimethylphenylmethyl-carbamate   ANY ANY
2-Chloro-4-dimethylamino-6-methyl-pyrimidine   ANY ANY
2-Cyclohexyl-4,6-dinitrophenol 131-89-5 ANY ANY
2H-1-Benzopyran-2-one, 4-hydroxy-3-(3- oxo-1-phenylbutyl)-, & salts, when present at concentrations greater than 0.3% 81-81-2 ANY ANY
2-Methyl-2(methylthio)propionaldehyde-O-(methylcarbamoyl) oxime   ANY ANY
2-Methylaziridine 75-55-8 ANY ANY
2-Methyllactonitrile 75-86-5 ANY ANY
2-Propanone, 1-bromo- 598-31-2 ANY ANY
2-Propen-1-ol 107-18-6 ANY ANY
2-Propenal 107-02-8 ANY ANY
2-Propyn-1-ol 107-19-7 ANY ANY
2-tert-Butyl-5-methyl-4,6-dinitro-phenyl acetate   ANY ANY
3(2H)-Isoxazolone, 5-(aminomethyl)- 2763-96-4 ANY ANY
3,3-Dichlorobenzidine and salts 91-94-1 0.1%/wt 0.001%/wt
3-[1-(2-Furanyl)-3-oxobutyl]1-4-hydroxy-2H-1-benzopyran-2-one   ANY ANY
3-Bromo-1-propyne   ANY ANY
3-Chloropropionitrile 542-76-7 ANY ANY
3-Isopropylphenyl N-methylcarbamate 64-00-6 ANY ANY
4-(Dimethylamino)-3,5-dimethylphenyl methylcarbamate   ANY ANY
4,4'-Methylene bis(2-Chloroaniline) 101-14-4 ANY ANY
4,6-Dinitro-o-cresol, & salts 534-52-1 ANY ANY
4,7-Methano-1H-indene, 1,4,5,6,7,8,8-heptachloro-3a,4,7,7a-tetrahydro- 76-44-8 ANY ANY
4-ADP  92-67-1 0.1%/wt 0.001%/wt
4-Aminobiphenyl 92-67-1 0.1%/wt 0.001%/wt
4-Aminodiphenyl 92-67-1 0.1%/wt 0.001%/wt
4-Aminopyridine 504-24-5 ANY ANY
4-Dimethylaminoazobenzene 60-11-7 0.1%/wt 0.001%/wt
4-Hydroxy-3-(1,2,3,4-tetrahydro-1-naphthalenyl)-2H-1-benzopyran-2-one   ANY ANY
4-Nitrobiphenyl 92-93-3 ANY ANY
4-Pyridinamine 504-24-5 ANY ANY
5-(Aminomethyl)-3-isoxazolol 2763-96-4 ANY ANY
6,9-Methano-2,4,3-benzodioxathiepin, 6,7,8,9,10,10- hexachloro-1,5,5a,6,9,9a-hexahydro-, 3-oxide 115-29-7 ANY ANY
7-Benzofuranol, 2,3-dihydro-2,2-dimethyl-, methylcarbamate 1563-66-2 ANY ANY
7-Oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid 145-73-3 ANY ANY
Acetaldehyde, chloro- 107-20-0 ANY ANY
Acetamide, 2-fluoro- 640-19-7 ANY ANY
Acetamide, N-(aminothioxomethyl)- 591-08-2 ANY ANY
Acetic acid, fluoro-, sodium salt 62-74-8 ANY ANY
Acetyl chloride 75-36-5 ANY ANY
Acrolein 107-02-8 ANY ANY
Acrylonitrile 107-13-1 0.1%/wt 0.001%/wt
Adiponitrile   ANY ANY
AFL 1082   ANY ANY
Aldicarb 116-06-3 ANY ANY
Aldicarb sulfone 1646-88-4 ANY ANY
Aldrin 309-00-2 ANY ANY
Alkyl aluminum chloride   ANY ANY
Alkyl aluminum compounds   ANY ANY
Allyl alcohol 107-18-6 ANY ANY
Allyl trichlorosilane   ANY ANY
alpha,alpha-Dimethylphenethylamine 122-09-8 ANY ANY
alpha-Chloroacetophenone   ANY ANY
alpha-Naphthylamine 134-32-7 ANY ANY
alpha-Naphthylthiourea 86-88-4 ANY ANY
Aluminum chloride (anhydrous)   ANY ANY
Aluminum diethyl monochloride   ANY ANY
Aluminum phosphide 20859-73-8 ANY ANY
Ammonium arsenate   ANY ANY
Ammonium bifluoride   ANY ANY
Ammonium picrate 131-74-8 ANY ANY
Ammonium vanadate 7803-55-6 ANY ANY
Amyl trichlorosilane (and isomers)   ANY ANY
Antimony pentachloride   ANY ANY
Antimony pentafluoride   ANY ANY
Aqualin   ANY ANY
Argentate(1-), bis(cyano-C)-,potassium 506-61-6 ANY ANY
Aroclor  1254 {PCBs} 11097-69-1 ANY ANY
Aroclor 1260 {PCBs} 11096-82-5 ANY ANY
Arsenic acid 7778-39-4 ANY ANY
Arsenic bromide 7784-33-0 ANY ANY
Arsenic chloride   ANY ANY
Arsenic compounds   ANY ANY
Arsenic disulfide 1303-32-8 ANY ANY
Arsenic iodide   ANY ANY
Arsenic oxide 1327-53-3 ANY ANY
Arsenic pentaselenide   ANY ANY
Arsenic pentoxide 1303-28-2 ANY ANY
Arsenic sulfide   ANY ANY
Arsenic tribromide 7784-33-0 ANY ANY
Arsenic trichloride 7784-34-1 ANY ANY
Arsenic trioxide 1327-53-3 ANY ANY
Arsenious acid and salts   ANY ANY
Arsenious oxide   ANY ANY
Arsine, diethyl 692-42-2 ANY ANY
Arsines   ANY ANY
Arsonous dichloride, phenyl- 696-28-6 ANY ANY
Askarel   ANY ANY
Aziridine 151-56-4 ANY ANY
Aziridine, 2-methyl- 75-55-8 ANY ANY
AZODRIN, 3-Hydroxy-N-cis-crotonamide   ANY ANY
Barium cyanide 542-62-1 ANY ANY
BCME  542-88-1 0.1%/wt 0.001%/wt
Benzenamine, 4-chloro- 106-47-8 ANY ANY
Benzenamine, 4-nitro- 100-01-6 ANY ANY
Benzene hexachloride, BHC; 1,2,3,4,5,6-Hexachloro--cyclohexane   ANY ANY
Benzene, (chloromethyl)- 100-44-7 ANY ANY
Benzeneethanamine, alpha,alpha- dimethyl- 122-09-8 ANY ANY
Benzenephosphorous dichloride   ANY ANY
Benzenethiol 108-98-5 ANY ANY
Benzidine and salts 92-87-5 0.1%/wt 0.001%/wt
Benzoic acid, 2-hydroxy-, compd. With (3aS-cis)-1,2,3,3a,8,8a-hexahydro-1,3a,8-trimethylpyrrolo[2,3-b]indol-5-yl methylcarbamate ester (1:1) 57-64-7 ANY ANY
Benzotrifluoride   ANY ANY
Benzoyl chloride 98-88-4 ANY ANY
Benzyl chloride 100-44-7 ANY ANY
Benzyl chlorocarbonate   ANY ANY
Benzyl chloroformate   ANY ANY
Beryllium & compounds, as Be - [see specific compound] 7440-41-7 ANY ANY
Beryllium chloride 7787-47-5 ANY ANY
Beryllium copper   ANY ANY
Beryllium fluoride 7787-49-7 ANY ANY
Beryllium hydride 7787-52-2 ANY ANY
Beryllium hydroxide 13327-32-7 ANY ANY
Beryllium oxide 1304-56-9 ANY ANY
Beryllium powder 7440-41-7 ANY ANY
beta-Chlorovinyldichloroarsine   ANY ANY
beta-Hydroxypropionitrile   ANY ANY
beta-Naphthylamine 91-59-8 ANY ANY
beta-Propiolactone 57-57-8 ANY ANY
BIDRIN, Dicrotophos, 3-(Dimethylamino)-1-methyl-3-oxo-1-propenyldimethyl phosphate   ANY ANY
Biphenyl   ANY ANY
bis (Chloromethyl) ether  542-88-1 0.1%/wt 0.001%/wt
bis (Methylmercuric) sulfate   ANY ANY
bis(2,3-Epoxypropyl) ether   ANY ANY
Boranes   ANY ANY
Bordeaux arsenites   ANY ANY
Boron trichloride   ANY ANY
Boron trifluoride   ANY ANY
BPL 57-57-8 ANY ANY
Bromine   ANY ANY
Bromine pentafluoride   ANY ANY
Bromine trifluoride   ANY ANY
Bromoacetone 598-31-2 ANY ANY
Bromomethane   ANY ANY
Brucine 357-57-3 ANY ANY
Brucine, dimethoxystrychnine   ANY ANY
Page top
Cacodylic acid 75-60-5 ANY ANY
Cadmium and/or cadmium compounds 7440-43-9 ANY ANY
Cadmium cyanide 542-83-6 ANY ANY
Calcium   ANY ANY
Calcium arsenate 10103-62-5 ANY ANY
Calcium arsenite, 1:1 52740-16-6 ANY ANY
Calcium carbide   ANY ANY
Calcium cyanide 592-01-8 ANY ANY
Calcium hydride   ANY ANY
Calcium hypochlorite   ANY ANY
Calcium oxychloride (dry)   ANY ANY
Calcium phosphide   ANY ANY
Carbamic acid, [(dibutylamino)- thio]methyl-, 2,3-dihydro-2,2- dimethyl- 7-benzofuranyl ester 55285-14-8 ANY ANY
Carbamic acid, dimethyl-, 1-[(dimethyl- amino)carbonyl]- 5-methyl-1H- pyrazol-3-yl ester 644-64-4 ANY ANY
Carbamic acid, dimethyl-, 3-methyl-1-(1-methylethyl)-1H- pyrazol-5-yl ester 119-38-0 ANY ANY
Carbamic acid, methyl-, 3-methylphenyl ester 1129-41-5 ANY ANY
Carbanolate   ANY ANY
Carbofuran 1563-66-2 ANY ANY
Carbon disulfide 75-15-0 ANY ANY
Carbonic dichloride 75-44-5 ANY ANY
Carbophenothion   ANY ANY
Carbosulfan 55285-14-8 ANY ANY
Ceresan liquid   ANY ANY
Chlordane 57-74-9 ANY ANY
Chlorextol   ANY ANY
Chlorfenvinphos   ANY ANY
Chlorine   ANY ANY
Chlorine dioxide   ANY ANY
Chlorine pentafluoride   ANY ANY
Chlorine trifluoride   ANY ANY
Chloroacetaldehyde 107-20-0 ANY ANY
Chloroacetyl chloride   ANY ANY
Chlorochromic anhydride   ANY ANY
Chloropicrin   ANY ANY
Chlorosulfonic acid   ANY ANY
Chromyl chloride   ANY ANY
CMME  107-30-2 0.1%/wt 0.001%/wt
Compound 1080   ANY ANY
Compound 1836   ANY ANY
Compound 4072   ANY ANY
Copper acetoarsenite   ANY ANY
Copper arsenate   ANY ANY
Copper arsenite   ANY ANY
Copper cyanide 544-92-3 ANY ANY
Coroxon   ANY ANY
Coumafuryl   ANY ANY
Coumatetralyl   ANY ANY
Crimidine   ANY ANY
Crotonaldehyde 4170-30-3 ANY ANY
Cupric arsenate   ANY ANY
Cupric arsenite 10290-12-7 ANY ANY
Cyanides (soluble cyanide salts), not otherwise specified   ANY ANY
Cyanogen 460-19-5 ANY ANY
Cyanogen chloride 506-77-4 ANY ANY
Cyanophenphos   ANY ANY
Cyclohexenyltrichlorosilane   ANY ANY
Cycloheximide   ANY ANY
Cyclohexyltrichlorosilane   ANY ANY
DAB 60-11-7 0.1%/wt 0.001%/wt
DBCP  96-12-8 0.1%/wt 0.001%/wt
DCB 91-94-1 0.1%/wt 0.001%/wt
DDVP 62-73-7 ANY ANY
Decaborane   ANY ANY
Demeton   ANY ANY
Demeton-S-methyl sulfone   ANY ANY
Diboron hexahydride   ANY ANY
Dichlorodimethylsilane   ANY ANY
Dichloroethylarsine   ANY ANY
Dichloromethyl ether 542-88-1 0.1%/wt 0.001%/wt
Dichlorophenylarsine 696-28-6 ANY ANY
Dichlorophenylarsine 696-28-6 ANY ANY
Dichlorvos 62-73-7 ANY ANY
Diborane   ANY ANY
Dieldrin 60-57-1 ANY ANY
Diethyl chlorovinyl phosphate   ANY ANY
Diethylaluminum chloride   ANY ANY
Diethylarsine 692-42-2 ANY ANY
Diethyldichlorosilane   ANY ANY
Diethyl-p-nitrophenyl phosphate 311-45-5 ANY ANY
Diethylzinc   ANY ANY
Difluorophosphoric acid   ANY ANY
Diglycidyl resorcinol ether 101-90-6 ANY ANY
Diisopropylfluorophosphate (DFP) 55-91-4 ANY ANY
Dimefox   ANY ANY
Dimethoate 60-51-5 ANY ANY
Dimethoxystrychnine   ANY ANY
Dimethyl 3-hydroxyglutaconate dimethylphosphate   ANY ANY
Dimethyl dichlorovinylphosphate   ANY ANY
Dimethyl nitrosoamine   ANY ANY
Dimethyl sulfate 77-78-1 ANY ANY
Dimethyl sulfide   ANY ANY
Dimethylaminoazobenzene  60-11-7 0.1%/wt 0.001%/wt
Dimethylarsinic acid   ANY ANY
Dimethyldichlorosilane   ANY ANY
Dimetilan. 644-64-4 ANY ANY
Dinitrobenzene (ortho, meta, para)   ANY ANY
Dinoseb 88-85-7 ANY ANY
Dioxathion   ANY ANY
Dioxin (2,3,7,8-TCDD)   ANY ANY
Diphenyl   ANY ANY
Diphenylamine chloroarsine   ANY ANY
Diphenyldichlorosilane   ANY ANY
Diphosphoramide, octamethyl- 152-16-9 ANY ANY
Diphosphoric acid, tetraethyl ester 107-49-3 ANY ANY
Disulfoton 298-04-4 ANY ANY
Disulfuryl chloride   ANY ANY
Dithiobiuret 541-53-7 ANY ANY
Dodecyltrichlorosilane   ANY ANY
E Dinitrophenol(2,3-;2,4-;2,6-isomers)   ANY ANY
Endosulfan 115-29-7 ANY ANY
Endothall 145-73-3 ANY ANY
Endothion   ANY ANY
Endrin 72-20-8 ANY ANY
Endrin, & metabolites 72-20-8 ANY ANY
Epinephrine 51-43-4 ANY ANY
Ethanedinitrile 460-19-5 ANY ANY
Ethanethiol   ANY ANY
Ethanimidothioc acid, 2-(dimethylamino)-N-[[(methylamino)carbonyl]oxy]-2-oxo-, methyl ester 23135-22-0 ANY ANY
Ethanimidothioic acid,N-[[(methylamino)carbonyl]oxy]-,methyl ester 16752-77-5 ANY ANY
Ethion   ANY ANY
Ethyl chlorocarbonate   ANY ANY
Ethyl chloroformate   ANY ANY
Ethyl cyanide 107-12-0 ANY ANY
Ethyl mercaptan   ANY ANY
Ethyldichloroarsine   ANY ANY
Ethyldichlorosilane   ANY ANY
Ethylene cyanohydrin   ANY ANY
Ethyleneimine 151-56-4 ANY ANY
Ethylphenyldichlorosilane   ANY ANY
Ethyltrichlorosilane   ANY ANY
exo-3-Chloro-endo-6-cyano-2-norbornanone-O- (methylcarbamoyl) oxime   ANY ANY
Famphur 52-85-7 ANY ANY
Fensulfothion   ANY ANY
Ferric arsenate   ANY ANY
Ferrous arsenate   ANY ANY
Fluoboric acid   ANY ANY
Fluorine 7782-41-4 ANY ANY
Fluoroacetamide 640-19-7 ANY ANY
Fluoroacetanilide   ANY ANY
Fluoroacetic acid, sodium salt 62-74-8 ANY ANY
Fluoroboric acid   ANY ANY
Fluorsulfonic acid   ANY ANY
Fonofos   ANY ANY
Formetanate hydrochloride 23422-53-9 ANY ANY
Formparanate 17702-57-7 ANY ANY
Fulminic acid, mercury(2+) salt 628-86-4 ANY ANY
Fumazone  96-12-8 0.1%/wt 0.001%/wt
Fuming sulfuric acid   ANY ANY
Guthion   ANY ANY
Hanane   ANY ANY
Heptachlor 76-44-8 ANY ANY
Hexadecyltrichlorosilane   ANY ANY
Hexaethyl tetraphosphate 757-58-4 ANY ANY
Hexyltrichlorosilane   ANY ANY
Hydrazine, diamine   ANY ANY
Hydrazine, methyl 60-34-4 ANY ANY
Hydrazinecarbothioamide 79-19-6 ANY ANY
Hydriodic acid   ANY ANY
Hydrobromic acid   ANY ANY
Hydrochloric acid   ANY ANY
Hydrocyanic acid 74-90-8 ANY ANY
Hydrofluoric acid 7664-39-3 ANY ANY
Hydrogen bromide   ANY ANY
Hydrogen chloride   ANY ANY
Hydrogen cyanide 74-90-8 ANY ANY
Hydrogen fluoride 7664-39-3 ANY ANY
Hydrogen iodide   ANY ANY
Hydrogen phosphide 7803-51-2 ANY ANY
Hydrogen selenide   ANY ANY
Hydrogen sulfide 6/4/7783 ANY ANY
Hypochlorite compounds   ANY ANY
Inerteen   ANY ANY
Iron arsenate   ANY ANY
Isobenzan   ANY ANY
Isodrin 465-73-6 ANY ANY
Isolan 119-38-0 ANY ANY
Kepone 143-50-0 ANY ANY
Lead arsenate   ANY ANY
Lead arsenite, as As3+ 10031-13-7 ANY ANY
Lead cyanide   ANY ANY
Lead orthoarsenate   ANY ANY
Lewisite   ANY ANY
Lithium   ANY ANY
Lithium aluminum hydride   ANY ANY
Lithium amide   ANY ANY
Lithium ferrosilicon   ANY ANY
Lithium hydride   ANY ANY
Lithium hypochlorite   ANY ANY
London purple, Mixture of arsenic trioxide, aniline, lime, and ferrous oxide   ANY ANY
Magnesium   ANY ANY
Magnesium arsenate   ANY ANY
Magnesium arsenite   ANY ANY
Maleic anhydride   ANY ANY
Manganese arsenate   ANY ANY
Manganese dimethyldithiocarbamate 15339-36-3 ANY ANY
Manganese,bis(dimethylcarbamodithioato-S,S')- 15339-36-3 ANY ANY
Manganous arsenate   ANY ANY
m-Cumenyl methylcarbamate 64-00-6 ANY ANY
Medinoterb acetate   ANY ANY
Mercuric chloride   ANY ANY
Mercuric cyanide   ANY ANY
Mercuric salicylate   ANY ANY
Mercury and/or mercury compounds 7439-97-6 ANY ANY
Mercury chloride   ANY ANY
Mercury cyanide   ANY ANY
Mercury fulminate (R,T) 628-86-4 ANY ANY
Mercury, (acetato-O)phenyl- 62-38-4 ANY ANY
meta-Isopropylphenyl-N-methylcarbamate, Ac 5,727   ANY ANY
Methanamine, N-methyl-N-nitroso- 62-75-9 ANY ANY
Methane, isocyanato- 624-83-9 ANY ANY
Methane, oxybis (chloro) - 542-88-1 0.1%/wt 0.001%/wt
Methane, tetranitro- (R) 509-14-8 ANY ANY
Methanethiol, trichloro- 75-70-7 ANY ANY
Methanimidamide, N,N-dimethyl-N'-[2-methyl-4-[[(methylamino)carbonyl]oxy]phenyl]- 17702-57-7 ANY ANY
Methanimidamide, N,N-dimethyl-N'-[3-[[(methylamino)-carbonyl]oxy]phenyl]- monohydrochloride 23422-53-9 ANY ANY
Methiocarb 2032-65-7 ANY ANY
Methomyl 16752-77-5 ANY ANY
Methoxychlor 72-43-5 ANY ANY
Methoxyethylmercuric chloride   ANY ANY
Methyl bromide 74-83-9 ANY ANY
Methyl chlorocarbonate 79-22-1 ANY ANY
Methyl chloroformate   ANY ANY
Methyl chloromethyl ether  107-30-2 0.1%/wt 0.001%/wt
Methyl hydrazine 60-34-4 ANY ANY
Methyl isocyanate 624-83-9 ANY ANY
Methyl parathion 298-00-0 ANY ANY
Methyl sulfate   ANY ANY
Methyl sulfide   ANY ANY
Methyl yellow  60-11-7 0.1%/wt 0.001%/wt
Methylaluminum sesquibromide   ANY ANY
Methylaluminum sesquichloride   ANY ANY
Methyldichloroarsine   ANY ANY
Methyldichlorosilane   ANY ANY
Methylmagnesium bromide   ANY ANY
Methylmagnesium chloride   ANY ANY
Methylmagnesium iodide   ANY ANY
Methyltrichlorosilane   ANY ANY
Metolcarb 1129-41-5 ANY ANY
Mevinphos   ANY ANY
Mexacarbate 315-8-4 ANY ANY
Mirex 2385-85-5 ANY ANY
MOCA 101-14-4 ANY ANY
Monomethyl hydrazine   ANY ANY
Muriatic acid   ANY ANY
n-Butyllithium (and isomers)   ANY ANY
n-Butyltrichlorosilane   ANY ANY
Nemagon  96-12-8 0.1%/wt 0.001%/wt
NIA 10,242   ANY ANY
Nickel arsenate, Nickelous arsenate   ANY ANY
Nickel carbonyl 13463-39-3 ANY ANY
Nickel cyanide 557-19-7 ANY ANY
Nicotine, & salts 54-11-5 ANY ANY
Nitric oxide 10102-43-9 ANY ANY
Nitrobenzene 98-95-3 ANY ANY
Nitrobenzol   ANY ANY
Nitrogen dioxide 10102-44-0 ANY ANY
Nitrogen oxide NO 10102-43-9 ANY ANY
Nitroglycerine 55-63-0 ANY ANY
Nitrophenol (ortho, meta, para)   ANY ANY
N-Nitrosodimethylamine 62-75-9 ANY ANY
N-Nitrosomethylvinylamine 4549-40-0 ANY ANY
Nonyltrichlorosilane   ANY ANY
n-Propyltrichlorosilane   ANY ANY
O,O,O',O'-Tetraethyl-S,S-methylenediphos-phorodithioate   ANY ANY
O,O-Diethyl O-pyrazinyl phosphorothioate 297-97-2 ANY ANY
O,O-Diethyl S-(N-ethoxycarbonyl N-methylcarba-moyl-methyl) phosphorodithioate   ANY ANY
O,O-Diethyl-0-[4-(methyl--sulfinyl)phenyl]phosphorothioate   ANY ANY
O,O-Diethyl-O-para-nitrophenylphosphate   ANY ANY
O,O-Diethyl-S-(isopropylthiomethyl) phosphorodithioate   ANY ANY
O,O-Diethyl-S-carboethoxy--ethyl phosphorodithioate   ANY ANY
O,O-Dimethyl-O-para-nitrophenyl—phosphorothioate   ANY ANY
O,O-Dimethyl-S-4-oxo-1,2,3-benzotriazin-3(4H)-ylmethyl phosphorodithioate   ANY ANY
O,O-Tetramethylthiuram monosulfide   ANY ANY
Octadecyltrichlorosilane   ANY ANY
Octamethylpyrophosphoramide 152-16-9 ANY ANY
Octyltrichlorosilane   ANY ANY
O-Ethyl O-para-nitrophenyl phenylphosphonothioate   ANY ANY
O-Ethyl-S,S-dipropyl phosphorodithioate   ANY ANY
O-Ethyl-S-phenylethyl phosphonodithioate   ANY ANY
O-Isopropyl methyl phosphoryl fluoride   ANY ANY
Oleum   ANY ANY
O-para-Cyanophenyl-O-ethyl phenyl phosphonothioate   ANY ANY
ortho,ortho-Diethyl-ortho-(3-chloro-4-methylcoumarin-7-yl) phosphate   ANY ANY
ortho-Chlorobenzylidene malonitrile   ANY ANY
Orthozenol   ANY ANY
Osmium tetroxide 20816-12-0 ANY ANY
Oxamyl 23135-22-0 ANY ANY
Oxygen difluoride    ANY ANY
para-(5-Amino-3-phenyl-1H-1,2,4-triazol-1-yl)-N,N,N',N'-tetramethylphosphonic diamide    ANY ANY
Para-oxon    ANY ANY
Parathion 56-38-2 ANY ANY
Paris green    ANY ANY
PCBs {Polychorinated biphenyls} 1336-36-3 ANY ANY
p-Chloroaniline 106-47-8 ANY ANY
Pentaborane   ANY ANY
Perchloromethyl mercaptan   ANY ANY
Pextox 14   ANY ANY
Phenarsazine chloride   ANY ANY
Phenol, (3,5-dimethyl-4-(methylthio)-,methylcarbamate 2032-65-7 ANY ANY
Phenol, 2-(1-methylpropyl)-4,6-dinitro- 88-85-7 ANY ANY
Phenol, 2,4,6-trinitro-, ammonium salt ® 131-74-8 ANY ANY
Phenol, 2,4-dinitro- 51-28-5 ANY ANY
Phenol, 2-cyclohexyl-4,6-dinitro- 131-89-5 ANY ANY
Phenol, 2-methyl-4,6-dinitro-, & salts 534-52-1 ANY ANY
Phenol, 3-(1-methylethyl)-, methylcarbamate 64-00-6 ANY ANY
Phenol, 3-methyl-5-(1-methylethyl)-,methyl carbamate 2631-37-0 ANY ANY
Phenol, 4-(dimethylamino)-3,5-dimethyl-, methylcarbamate (ester) 315-18-4 ANY ANY
Phenyl chloromethyl ketone   ANY ANY
Phenylbenzene   ANY ANY
Phenyldichloroarsine   ANY ANY
Phenylmercury acetate 62-38-4 ANY ANY
Phenylphenol   ANY ANY
Phenylthiourea 103-85-5 ANY ANY
Phenyltrichorosilane   ANY ANY
Phorate 298-02-2 ANY ANY
Phosfolan   ANY ANY
Phosgene 75-44-5 ANY ANY
Phoshporyl bromide   ANY ANY
Phosphamidon   ANY ANY
Phosphine 7803-51-2 ANY ANY
Phosphoric acid, diethyl 4-nitrophenylester 311-45-5 ANY ANY
Phosphoric chloride   ANY ANY
Phosphoric sulfide   ANY ANY
Phosphorodithioic acid, O,O-diethyl S-[2-(ethylthio)ethyl] ester 298-04-4 ANY ANY
Phosphorodithioic acid, O,O-diethyl S-[2-(ethylthio)methyl] ester 298-02-2 ANY ANY
Phosphorodithioic acid, O,O-dimethyl S-[2-(methylamino)-2-oxoethyl] ester 60-51-5 ANY ANY
Phosphorofluoridic acid, bis(1-methylethyl) ester 55-91-4 ANY ANY
Phosphorothioic acid, O,O,-dimethyl O(4-nitrophenyl) ester 298-00-0 ANY ANY
Phosphorothioic acid, O,O-diethyl O-(4-nitrophenyl) ester 56-38-2 ANY ANY
Phosphorothioic acid, O,O-diethyl O-pyrazinyl ester 297-97-2 ANY ANY
Phosphorothioic acid,O-[4-[(dimethylamino)sulfonyl]phenyl] O,O-dimethyl ester 52-85-7 ANY ANY
Phosphorus (white or yellow)   ANY ANY
Phosphorus oxybromide   ANY ANY
Phosphorus oxychloride   ANY ANY
Phosphorus pentachloride   ANY ANY
Phosphorus pentasulfide   ANY ANY
Phosphorus sesquisulfide   ANY ANY
Phosphorus tribromide   ANY ANY
Phosphorus trichloride   ANY ANY
Phosphoryl chloride   ANY ANY
Physostigmine salicylate 57-64-7 ANY ANY
Physostigmine 57-47-6 ANY ANY
Platinum compounds   ANY ANY
Plumbane, tetraethyl- 78-00-2 ANY ANY
p-Nitroaniline 100-01-6 ANY ANY
Polychlorinated Biphenyls {PCBs} 1336-36-3 ANY ANY
Polychlorocamphene   ANY ANY
Potassium   ANY ANY
Potassium acid fluoride   ANY ANY
Potassium arsenate   ANY ANY
Potassium arsenite   ANY ANY
Potassium bifluoride   ANY ANY
Potassium cyanide 151-50-8 ANY ANY
Potassium hydride   ANY ANY
Potassium silver cyanide 506-61-6 ANY ANY
Promecarb 2631-37-0 ANY ANY
Propanal, 2-methyl-2-(methyl-sulfonyl)-, O-[(methylamino)carbonyl] oxime 1646-88-4 ANY ANY
Propanal, 2-methyl-2-(methylthio)-,O-[(methylamino)carbonyl]oxime 116-06-3 ANY ANY
Propanenitrile 107-12-0 ANY ANY
Propanenitrile, 2-hydroxy-2-methyl- 75-86-5 ANY ANY
Propanenitrile, 3-chloro- 542-76-7 ANY ANY
Propargyl alcohol 107-19-7 ANY ANY
Propargyl bromide   ANY ANY
Propyleneimine 75-55-8 ANY ANY
Prothoate   ANY ANY
Pyranol   ANY ANY
Pyridine, 3-(1-methyl-2-pyrrolidinyl)-, (S)-, & salts 54-11-5 ANY ANY
Pyrosulfuryl chloride   ANY ANY
Pyrrolo[2,3-b]indol-5-ol,1,2,3,3a,8,8a-hexahydro-1,3a,8- trimethyl-, methylcarbamate (ester), (3aS-cis)- 57-47-6 ANY ANY
Quinone   ANY ANY
S,S-1,4-dioxane-2,3-diyl bis(O,O-diethyl phosphorodithioate)   ANY ANY
S-[(5-Methoxy-2-oxo-1,3,4-thia-diazo13(2H)-yl)methyl] -O,O-dimethyl phosphorodithioate   ANY ANY
S-[(5-Methoxy-4-oxo-4H-pyran-2-yl)-methyl] O,O-dimethyl phosphorothioate   ANY ANY
S[[(4-Chlorophenyl)thio]methyl] 0,0-diethyl phosphorodithioate   ANY ANY
S-[2-(ethyl-sulfonyl)ethyl] O,O-dimethyl phosphorothioate   ANY ANY
Salicylated mercury   ANY ANY
Schradan   ANY ANY
Selenious acid and salts   ANY ANY
Selenious acid, dithallium(1+) salt 12039-52-0 ANY ANY
Selenium and/or selenium compounds 7782-49-2 ANY ANY
Selenium fluoride   ANY ANY
Selenourea 630-10-4 ANY ANY
Selenous acid   ANY ANY
Silicochloroform   ANY ANY
Silicon chloride   ANY ANY
Silicon tetrachloride   ANY ANY
Silver acetylide   ANY ANY
Silver cyanide 506-64-9 ANY ANY
S-Methyl-N-((methyl-carbamoyl)oxy) thioacetimidate   ANY ANY
Sodamide   ANY ANY
Sodium   ANY ANY
Sodium acid fluoride   ANY ANY
Sodium aluminum hydride   ANY ANY
Sodium amide   ANY ANY
Sodium arsenate 7631-89-2 ANY ANY
Sodium arsenate 15120-17-9 ANY ANY
Sodium arsenite 7784-46-5 ANY ANY
Sodium azide 26628-22-8 ANY ANY
Sodium bifluoride   ANY ANY
Sodium cacodylate   ANY ANY
Sodium cyanide 143-33-9 ANY ANY
Sodium cyanide Na(CN) 143-33-9 ANY ANY
Sodium dimethylarsenate   ANY ANY
Sodium hydride   ANY ANY
Sodium hypochlorite   ANY ANY
Sodium methoxide   ANY ANY
Sodium methylate   ANY ANY
Sodium peroxide   ANY ANY
Sodium potassium alloy   ANY ANY
Sodium selenate   ANY ANY
S-para-Chlorophenyl-2,4,5-trichlorophenyl sulfide   ANY ANY
Strontium arsenate   ANY ANY
Strychnidin-10-one, & salts 57-24-9 ANY ANY
Strychnidin-10-one, 2,3-dimethoxy- 357-57-3 ANY ANY
Strychnine, & salts 57-24-9 ANY ANY
Sulfonyl chloride   ANY ANY
Sulfonyl fluoride   ANY ANY
Sulfotepp   ANY ANY
Sulfur chloride   ANY ANY
Sulfur monochcloride   ANY ANY
Sulfur mustard   ANY ANY
Sulfur oxychloride   ANY ANY
Sulfur pentafluoride   ANY ANY
Sulfuric acid, dithallium(1+) salt 7446-18-6 ANY ANY
Sulfuryl chloride   ANY ANY
Sulfuryl fluoride   ANY ANY
TCDD 1746-01-6 ANY ANY
TDI 584-84-9 ANY ANY
Tellurium hexafluoride   ANY ANY
Tetraethyl lead 78-00-2 ANY ANY
Tetraethyl pyrophosphate 107-49-3 ANY ANY
Tetraethyldithiopyrophosphate 3689-24-5 ANY ANY
Tetramethyl succinonitrile   ANY ANY
Tetramethylphosphorodiamidic fluoride   ANY ANY
Tetranitromethane 509-14-8 ANY ANY
Tetraphosphoric acid, hexaethyl ester 757-58-4 ANY ANY
Tetraphosphorus trisulfide   ANY ANY
Tetrasul   ANY ANY
Thallic oxide 1314-32-5 ANY ANY
Thallium and/or thallium compounds   ANY ANY
Thallium sulfate   ANY ANY
Thallium(I) selenite 12039-52-0 ANY ANY
Thallium(I) sulfate 7446-18-6 ANY ANY
Thallous sulfate   ANY ANY
Thiocarbonylchloride   ANY ANY
Thiodiphosphoric acid, tetraethylester 3689-24-5 ANY ANY
Thiofanox 39196-18-4 ANY ANY
Thioimidodicarbonic diamide 541-53-7 ANY ANY
Thionazin   ANY ANY
Thionyl chloride   ANY ANY
Thiophenol 108-98-5 ANY ANY
Thiophosgene   ANY ANY
Thiophosphoryl chloride   ANY ANY
Thiosemicarbazide 79-19-6 ANY ANY
Thiourea, (2-chlorophenyl)- 5344-82-1 ANY ANY
Thiourea, 1-naphthalenyl- 86-88-4 ANY ANY
Thiourea, phenyl- 103-85-5 ANY ANY
Tirpate 26419-73-8 ANY ANY
Titanic chloride   ANY ANY
Titanium tetrachloride   ANY ANY
Toluene-2,4-diisocyanate 584-84-9 ANY ANY
Toxaphene 8001-35-2 ANY ANY
Triamiphos   ANY ANY
Trichloroborane   ANY ANY
Trichloromethanethiol 75-70-7 ANY ANY
Trichloromethylsulfenylchloride   ANY ANY
Trichloronitromethane   ANY ANY
Trichlorosilane   ANY ANY
Triethylenephospho-ramide   ANY ANY
Trifluoromethylbenzene   ANY ANY
tris(1-Aziridinyl) phosphine oxide   ANY ANY
UDMH 57-14-7 ANY ANY
Vanadic acid, ammonium salt 7803-55-6 ANY ANY
Vanadium pentoxide 1314-62-1 ANY ANY
Vinyl chloride 75-01-4 ANY ANY
Vinylamine, N-methyl-N-nitroso- 4549-40-0 ANY ANY
Vinyltrichlorosilane   ANY ANY
Warfarin, & salts, when present at concentrations greater than 0.3% 81-81-2 ANY ANY
WP 155   ANY ANY
Zinc arsenate   ANY ANY
Zinc arsenite   ANY ANY
Zinc cyanide 557-21-1 ANY ANY
Zinc ethyl   ANY ANY
Zinc phosphide   ANY ANY
Zinc phosphide 1314-84-7 ANY ANY
Zinc, bis(dimethylcarbamodithioato- S,S')- 137-30-4 ANY ANY
Ziram 137-30-4 ANY ANY
Zirconium chloride   ANY ANY
Zirconium tetrachloride 75-35-4 ANY ANY

Designate a hazardous waste storage area

Hazardous waste sign
  • Select an area that is:
    • Near where the waste is generated
    • Under the control of lab personnel
    • Out of the way of normal lab activities
  • Label the area with a "Danger – Hazardous Waste" sign. Request signs from the EH&S Environmental Management Facility, (858) 534-2753.
  • Make the area easily accessible and recognizable to EH&S waste technicians.

Note: Fume hoods may be used to temporarily store small quantities of waste materials, but should not serve as designated waste storage areas.

Select compatible containers

  • Chemical compatibility:
    • Choose a container chemically compatible with the material it will hold. Chemicals must not react with, weaken, or dissolve the container or lid.
    • Follow these basic compatibility guidelines:
      • Acids or bases: Do not store in metal.
      • Hydrofluoric acid: Do not store in glass.
      • Gasoline (solvents): Do not store or transport in lightweight polyethylene containers such as milk jugs.
    • Read Chemical Compatibility Guidelines for more detailed information.
  • Caps and closure:
    • Use waste containers with leak-proof, screw-on caps so contents can't leak if a container tips over. Corks, parafilm, and beakers are not acceptable.
    • If necessary, transfer waste material to a container that can be securely closed. Label the new container.
    • Keep waste containers closed except when adding waste.
    • Wipe down containers prior to your scheduled collection date.
  • Size:
    • Choose appropriately sized containers. Store smaller quantities in smaller containers. It's not cost effective to dispose of 50 milliliters of material in a 4-liter container.
  • Secondary containment:
    • Always place your container in a secondary container to:
      • Capture spills and leaks from the primary container
      • Segregate incompatible hazardous wastes, such as acids and bases
    • A secondary container must be chemically compatible and able to hold 110% of the volume of waste stored in the primary container(s). Lab trays and dishpans are frequently used for secondary containment.
    • EH&S provides free secondary containers for 20-liter (5-gallon) waste containers. Request these secondary containers from the EH&S Environmental Management Facility, (858) 534-2753.

Tag every waste container

  • Attach a completed hazardous waste tag to the container before you begin using the container to accumulate and store waste.
  • Cross out all other labels on the container. Do not obliterate the original product label; waste technicians need to see what the container held before it was designated as a waste receptacle.

Liquid waste

Dry, solid waste

Chemically contaminated solid waste includes 3 categories that are packaged differently for disposal: lab trash, dry chemicals, and sharps.

  • Lab trash: Examples include absorbent paper products, Kim Wipes, gloves, benchcoats, and other lab supplies. Follow these guidelines:
    • Double-bag the waste in clear plastic bags (Marketplace part #5015) to allow visual inspection by EH&S waste technicians. If contents cannot be visually inspected, EH&S cannot collect the bag.
    • Seal each bag individually.
    • Accurately list the bag's contents and chemical constituents on the hazardous waste tag.
  • Dry chemicals:
    • Dispose of solid reagent chemicals in the manufacturer's container.
    • Label the container with a hazardous waste tag.
  • Sharps: Sharps are items capable of puncturing, piercing, or tearing regular waste bags. Examples include pipettes, pipette tips, needles, scalpels, razor blades, and broken glass. Sharps require special packaging.

Empty containers

Empty containers that once held extremely hazardous waste must be labeled with a hazardous waste tag and collected by EH&S for disposal.

Storage time and quantity limits

Storage time and quantity limits for extremely hazardous chemical waste are very strict. Keep UC San Diego in compliance. Request a hazardous waste collection before time or quantity limits are reached.

  • Time: All extremely hazardous waste must be collected within 90 days from when waste is first put into containers.
  • Quantity: Up to 1 quart of extremely hazardous waste may be accumulated before it must be collected.
    • When 1 quart or more of extremely hazardous waste accumulates, the waste must be collected within 3 days.
  • Read How to Request a Hazardous Waste Collection for details.

In the right place? These procedures are for extremely hazardous chemical waste only.

Follow these procedures for selecting containers and safely storing extremely hazardous chemical waste until it is collected by Environment, Health & Safety (EH&S).

For more information, contact the EH&S Environmental Management Facility, (858) 534-2753.
Notice: Disposal of hazardous waste using sinks, intentional evaporation, or as regular trash is against the law. Campus laboratories must abide by strict state and federal waste disposal requirements. You may be held liable for violations of applicable laws.