Below is a list of High Hazard chemicals, "P" coded wastes, regulated by the Massachusetts Department of Environmental Protection (DEP). Last Amended Feb 27, 2004. Please take a moment to scan this list for any chemicals you typically use in the course of your research, or that may be sitting in your chemical inventories.

MBL investigators should use caution when ordering these substances, assuring that only amounts specifically required for experiments. Disposal costs for these chemicals may be extremely high and may be passed on to the end user. Further, MBL is permitted to have an extremely limited amount of these "P-coded" wastes in our Main Storage area. Before adding a new chemical to your labs inventory, please review this list and ensure that your new chemical is not listed.

Chemicals that ARE on this list should be ordered through the stockroom only, to ensure that campus-wide inventories of these products is kept to a minimum.

The table below is reproduced directly from Mass Hazardous Waste Regulations: 310CMR 30.0 which is available here.

Hazardous Waste No.

Chemical Abstracts Numbers

Substance

P023 1074-20-0 Acetaldehyde, chloro-
P002 591-08-2 Acetamide, N-(aminothioxomethyl)-
P057 640- 19-7 Acetamide, 2-fluoro-
P058 62-74-8 Acetic acid, fluoro-, sodium salt
P002 591-08-2 I-Acetyl-2-thiourea
P003 107-02-8 Acrolein
P070 116-06-3 Aldicarb
P004 309-00-2 Aldrin
P005 107-18-6 Allyl alcohol
P006 20859-73-8 Aluminum phosphide (R,T)
P007 763-96-4 5-(An-dnomethyl)-3-isoxazolol
P008 504-24-5 4-Aminopyridine
P009 131-74-8 Ammonium picrate (R)
P119 7803-55-6 Ammonium vanadate
P099 506-61-6 Argentate(I-), bis(cyano-C)-, potassium
P010 7778-39-4 Arsenic acid H3 AsO4
P012 1327-53-3 Arsenic oxide As2 O3
P011 1303-28-2 Arsenic oxide As2 O5
P011 1303-28-2 Arsenic pentoxide
P012 1327-53-3 Arsenic trioxide
P038 692-42-2 Arsine, diethyl-
P036 696-28-6 Arsonous dichlotide, phenyl-
P054 151-56-4 Aziridine
P067 75-55-8 Aziridine, 2-methyl-
P013 542-62-1 Barium cyanide
P024 106-47-8 Benzenamine, 4-chloro-
P077 100-01-6 Benzenamine, 4-nitro-
P028 100-44-7 Benzene, (chloromethyl)-
P042 51-43-4 1,2-Benzenediol, 4-[l-hydroxy-2-(methylamino)- ethyl]-, (R)-
P046 122-09-8 Benzeneethanamine, alpha,alpha-dimethyl-
P014 108-98-5 Benzenethiol
P001 81-81-2* 2H-1-Benzopyran-2-one, 4-hydroxy-3-(3-oxo-I-phenylbutyl)-, & salts, when present at concentrations greater than 0.3%
P028 100-44-7 Benzyl chloride
P015 7440-41-7 Beryllium
P017 598-31-2 Bromoacetone
P018 357-57-3 Brucine
P045   2-Butanone, 3,3-dimethyl-l-(methylthio)-, O-[(methylamino)carbonyll oxime
P021 592-01-8 Calcium cyanide
P021 592-01-8 Calcium cyanide Ca(CN)2
P022 75-15-0 Carbon disulfide
P095 75-44-5 Carbonic dichloride
P023 107-20-0 Chloroacetaldehyde
P024 106-47-8 p-Chloroaniline,
P026 5344-82-1 1-(o-Chlorophenyl)thiourea
P027 542-76-7 3-Chloropropionitrile
P029 544-92-3 Copper cyanide
P029 544-92-3 Copper cyanide CUCN
P030 ------- Cyanides (soluble cyanide salts), not otherwise specified
P031 460-19-5 Cyanogen
P033 506-77-4 Cyanogen chloride
P033 506-77-4 Cyanogen chloride CNCI
P034 131-89-5 2-Cyclohexyl-4,6-dinitrophenol
P016 542-88-1 Dichloromethyl ether
P036 696-28-6 Dichlorophenylarsine
P037 60-57-1 Dieldrin
P038 692-42-2 Diethylarsine
P041 311-45-5 Diethyl-p-nitrophenyl phosphate
P040 297-97-2 O,O-Diethyl 0-pyrazinyl phosphorothioate
P043 55-91-4 Diisopropylfluorophosphate (DFP)
P004 30900002 1,4,5,8-Dimethanonaphthalene, 1,2,3,4,10,10- hexachloro- 1,4,4a,5,8,8a hexahydro-, (1 alpha,4alpha,4abeta,5alpha,8alpha,8abeta)-
P060 465-73-6 1,4,5,8-Dimethanonaphthalene, 1,2,3,4,10,10- hexachloro- 1,4,4a,5,8,8a-hexahydro-, (1alpha,4alpha,4abeta,5beta,8beta,8abeta)-
P037 60-57-1 2,7:3,6-Dimethanonaphth[2,3-bloxirene, 3,4,5,6,9,9-hexachloro- 1a,2,2a,3,6,6a,7,7a-octahydro-, (laalpha,2beta,2aalpha,3beta, 6beta,6aalpha,7beta,7aalpha)-
P051 72-20-8* 2,7:3,6-Dimethanonaphth[2,3-b]oxirene, 3,4,5,6,9,9-hexacMoro-la,2,2a,3,6,6a,7,7a-octahydro-, (I aalpha,2beta,2abeta,3alpha,6alpha, 6abeta,7beta,7aalpha)-, & metabolites
P044 60-51-5 Dimethoate
P046 122-09-8 alpha,alpha-Dimethylphenethylan-dne
P047 534-52-1* 4,6-Dinitro-o-cresol, & salts
P048 51-28-5 2,4-Dinitrophenol
P020 88-85-7 Dinoseb
P085 152-16-9 Diphosphoramide, octamethyl-
P111 107-49-3 Diphosphoric acid, tetraethyl ester
P039 298-04-4 Disulfoton
P049 541-53-7 Dithiobiuret
P050 115-29-7 Endosulfan
P088 145-73-3 EndothaE
P051 72-20-8 Endrin
P051 72-20-8 Endrin, & metabolites
P042 51-43-4 Epinephrine
P031 460-19-5 Ethanedinitrfle
P066 167-77-5 Ethanin-iidothioic acid, N-[[(methylan-dno)- carbonyl]oxy]-, methyl ester
P101 107-12-0 Ethyl cyanide
P054 151-56-4 Ethyleneimine
P097 52-85-7 Famphur
P056 7782-41-4 Fluorine
P057 640-19-7 Fluoroacetamide
P058 62-74-8 Fluoroacetic acid, sodium salt
P065 628-86-4 Fulminic acid, mercury(2+) salt (R,T)
P059 76-44-8 Heptachlor
P062 757-58-4 Hexaethyl tetraphosphate
P116 79-19-6 Hydrazinecarbothioamide
P068 60-34-4 Hydrazine, methyl-
P063 74-90-8 Hydrocyanic acid
P096 74-90-8 Hydrogen cyanide
P060 7803-51-2 Hydrogen phosphide
P007 465-73-6 Isodrin
P092 2763-96-4 3(2H)-Isoxazolone, 5-(aminomethyl)-
P065 62-38-4 Mercury, (acetato-O)phenyl-
P082 628-86-4 Mercury fulminate (R,T)
P064 62-75-9 Methanan-dne, N-methyl-N-nitroso-
P016 624-83-9 Methane, isocyanato-
P112 542-88-1 Methane, oxybis[chloro-
P118 509-14-8 Methane, tetranitro- (R)
P050 75-70-7 Methanethiol, trichloro-
&NBSP 115-29-7 6,9-Methano-2,4,3-benzodioxathiepin, 6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-, 3-oxide
P059 76-44-8 4,7-Methano-IH-indene, 1,4,5,6,7,8,8 -heptachlOTo- 3a,4,7,7a-tetrahydro-
P066 16752-77-5 Methomyl
P068 60-34-4 Methyl hydrazine
P064 624-83-9 Methyl isocyanate
P069 75-86-5 2-Methyllactonitrile
P071 298-00-0 Methyl parathion
P072 86-88-4 alpha-Naphthylthiourea
P073 13463-39-3 Nickel carbonyl
P073 13463-39-3 Nickel carbonyl Ni)CO)4 (T-4)-
P074 557-19-7 Nickel cyanide
P074 557-19-7 Nickel cyanide Ni(CN)2
P075 54-11-5* Nicotine, & salts
P076 10102-43-9 Nitric oxide
P077 100-01-6 p-Nitroaniline
P078 10102-44-0 Nitrogen dioxide
P076 10102-43-9 Nitrogen oxide NO
P078 10102-44-0 Nitrogen oxide NO2
P081 55-63-0 Nitroglycerine (R)
P082 62-75-9 N-Nitrosodimethylamine
P084 4549-40-0 N-Nitrosomethylvinylamine
P085 152-16-9 Octamethylpyrophosphoramide
P087 20816-12-0 Osmium oxide Os O4 (T-4)-
P087 20816-12-0 Osmium tetroxide
P088 145-73-3 7-Oxabicyclo[2.2. 1]heptane-2,3-dicarboxylic acid
P089 56-38-2 Parathion
P034 131-89-5 Phenol, 2-cyclohexyl-4,6-dinitro-
P048 51-28-5 Phenol, 2,4-dinitro-
P047 534-52-1* Phenol, 2-methyl-4,6-dinitro-, & salts
P020 88-85-7 Phenol, 2-(l-methylpropyl)-4,6-dinitro-
P009 131-74-8 Phenol, 2,4,6-trinitro-, ammonium salt (R)
P092 62-38-4 Phenylmercury acetate
P093 103-85-5 Phenylthiourea
P094 298-02-2 Phorate
P095 75-44-5 Phosgene
P096 7803-51-2 Phosphine
P041 311-45-5 Phosphoric acid, diethyl 4-nitrophenyl ester
P039 298-04-4 Phosphorodithioic acid, O,O-diethyl S-[2- (ethylthio)ethyl] ester
P094 298-02-2 Phosphorodithioic acid, O,O-diethyl S-[(ethyl- thio)methyl] ester
P044 60-51-5 Phosphorodithioic acid, O,O-dimethyl S-[2- (methylan-dno)-2-oxoethyl] ester
P043 55-91-4 Phosphorofluoridic acid, bis(l-methylethyl) ester
P089 56-38-2 Phosphorothioic acid,_O,Q-diethyl O-(4-nitro- phenyl) ester
P040 297-97-2 Phosphorothioic acid, O,O-diethyl 0-pyrazinyl ester
P097 52-85-7 Phosphorothioic acid, O-[4-[(dimethylamino)-sulfonyl]phenyl] O,O-dimethyl ester
P071 298-00-0 Phosphorothioic acid, O,O-dimethyl O-(4-rdtro- phenyl) ester
P110 78-00-2 Plumbane, tetraethyl-
P098 151-50-8 Potassium cyanide
P098 151-50-8 Potassium cyanide K(CN)
P099 506-61-6 Potassium silver cyanide
P070 116-06-3 Propanal, 2-methyl-2-(methylthio)-, O-[(methyl- amino)carbonyl]oxime
P101 107-12-0 Propanenitrile
P027 542-76-7 Propanenitriie, 3-chloro-
P069 75-86-5 Propanenitrile, 2-hydroxy-2-methyl-
P081 55-63-0 1,2,3-Propanetriol, trinitrate (R)
P017 598-31-2 2-Propanone, 1-bromo-
P102 107-19-7 Propargyl alcohol
P003 107-02-8 2-Propenal
P005 107-18-6 2-Propen-l-ol
P067 75-55-8 1,2-Propylenimine
P102 107-19-7 2-Propyn-l-ol
P008 504-24-5 4-Pyridinamine
P075 54-11-5* Pyridine, 3-(I-methyl-2-pyrrolidinyl)-, (S)-, & salts
P114 12039-52-0 Selenious acid, dithallium(l+) salt
P103 630-10-4 Selenourea
P104 506-64-9 Silver cyanide
P104 506-64-9 Silver cyanide AG(CN)
P105 26628-22-8 Sodium azide
P106 143-33-9 Sodium cyanide
P106 143-33-9 Sodium cyanide NA(CN)
P108 57-24-9* Strychnidin-10-one, & salts
P018 357-57-3 Strychnidin-10-one, 2,3-dimethoxy-
P108 57-24-9* Strychnine, & salts
P115 7446-18-6 Sulfuric acid, dithallium(l+) salt
P109 3689-24-5 Tetraethyldithiopyrophosphate
P110 78-00-2 Tetraethyl lead
P111 107-49-3 Tetraethyl pyrophosphate
P112 509-14-8 Tetranitromethane (R)
P062 757-58-4 Tetraphosphoric acid, hexaethyl ester
P113 1314-32-5 Thallic oxide
P113 1314-32-5 Thallium oxide Tl2 O3
P114 12039-52-0 Thallium(I) selenite
P115 7446-18-6 Thallium(l) sulfate
P109 3689-24-5 Thiodiphosphoric acid, tetraethyl ester
P045 39196-18-4 Thiofanox
P049 541-53-7 Thioimidodicarbonic diamide [(H2N)C(S)]2NH
P014 108-98-5 Thiophenol
P116 79-19-6 Thiosemicarbazide
P026 5344-82-1 Thiourea, (2-chlorophenyl)-
P072 86-88-4 Thiourea, 1-naphthalenyl-
P093 103-85-5 Thiourea, phenyl-
P123 8001-35-2 Toxaphene
P118 75-70-7 Trichloromethanethiol
P119 7803-55-6 Vanadic acid, ammonium salt
P120 1314-62-1 Vanadium oxide VO,
P120 1314-62-1 Vanadium pentoxide
P084 4549-40-0 Vinylan-Line, N-methyl-N-nitroso-
001 81-81-2* Warfarin, & salts, when present at concentrations greater than 0.3%
P121 557-21-1 Zinc cyanide
P121 557-21-1 Zinc cyanide Zn(CN),
P122 1314-84-7 Zinc phosphideZn3 P2 (R,T) when present at concentrations greater than 10%