Hazardous Waste

Defining Hazardous Waste: Listed, Characteristic and Mixed Radiological Wastes

The Hazardous Waste Identification Process: Step 3 - Is the wasted listed or characteristic hazardous waste?Click on a step in the hazardous waste identification process for more information.

A solid waste is a hazardous waste if it is specifically listed as a known hazardous waste or meets the characteristics of a hazardous waste. Listed wastes are wastes from common manufacturing and industrial processes, specific industries and can be generated from discarded commercial products. Characteristic wastes are wastes that exhibit any one or more of the following characteristic properties: ignitability, corrosivity, reactivity or toxicity.

A waste that has a hazardous component and a radioactive component is called a mixed waste and is regulated under both the Resource Conservation and Recovery Act (RCRA) and the Atomic Energy Act.

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Listed Wastes

A waste is determined to be a hazardous waste if it is specifically listed on one of four lists (the F, K, P and U lists) found in title 40 of the Code of Federal Regulations (CFR) in section 261.

The F and K Lists

The F-list, found at 40 CFR section 261.31, identifies wastes from common manufacturing and industrial processes as hazardous. Because the processes generating these wastes can occur in different sectors of industry, the F list wastes are known as wastes from non-specific sources. They can be divided into seven groups depending on the type of manufacturing or industrial operation that creates them:

  • Spent solvent wastes,
  • Electroplating and other metal finishing wastes,
  • Dioxin-bearing wastes,
  • Chlorinated aliphatic hydrocarbons production,
  • Wood preserving wastes,
  • Petroleum refinery wastewater treatment sludges, and
  • Multisource leachate.

The K-list identifies hazardous wastes from specific sectors of industry and manufacturing and are considered source-specific wastes. To qualify as a K-listed hazardous waste, a waste must fit into one of the 13 categories on the list and the waste must match one of the detailed K list waste descriptions in 40 CFR section 261.32. the 13 industries that generate K list wastes are:

    • Wood preservation,
    • Organic chemicals manufacturing,
    • Pesticides manufacturing,
    • Petroleum refining,
    • Veterinary pharmaceuticals manufacturing,
    • Inorganic pigment manufacturing,
    • Inorganic chemicals manufacturing,
    • Explosives manufacturing,
    • Iron and steel production,
    • Primary aluminum production,
    • Secondary lead processing,
    • Ink formulation, and
    • Coking (processing of coal to produce coke).

    Use the table below to search for and sort by hazardous wastes listed on the F and K lists:

    Industry and EPA Hazardous Waste Number Description Hazard Code*
    F001 The following spent halogenated solvents used in degreasing: Tetrachloroethylene, trichloroethylene, methylene chloride, 1,1,1-trichloroethane, carbon tetrachloride, and chlorinated fluorocarbons; all spent solvent mixtures/blends used in degreasing containing, before use, a total of ten percent or more (by volume) of one or more of the above halogenated solvents or those solvents listed in F002, F004, and F005; and still bottoms from the recovery of these spent solvents and spent solvent mixtures (T)
    F002 The following spent halogenated solvents: Tetrachloroethylene, methylene chloride, trichloroethylene, 1,1,1-trichloroethane, chlorobenzene, 1,1,2-trichloro-1,2,2-trifluoroethane, ortho-dichlorobenzene, trichlorofluoromethane, and 1,1,2-trichloroethane; all spent solvent mixtures/blends containing, before use, a total of ten percent or more (by volume) of one or more of the above halogenated solvents or those listed in F001, F004, or F005; and still bottoms from the recovery of these spent solvents and spent solvent mixtures (T)
    F003 The following spent non-halogenated solvents: Xylene, acetone, ethyl acetate, ethyl benzene, ethyl ether, methyl isobutyl ketone, n-butyl alcohol, cyclohexanone, and methanol; all spent solvent mixtures/blends containing, before use, only the above spent non-halogenated solvents; and all spent solvent mixtures/blends containing, before use, one or more of the above non-halogenated solvents, and, a total of ten percent or more (by volume) of one or more of those solvents listed in F001, F002, F004, and F005; and still bottoms from the recovery of these spent solvents and spent solvent mixtures (I)
    F004 The following spent non-halogenated solvents: Cresols and cresylic acid, and nitrobenzene; all spent solvent mixtures/blends containing, before use, a total of ten percent or more (by volume) of one or more of the above non-halogenated solvents or those solvents listed in F001, F002, and F005; and still bottoms from the recovery of these spent solvents and spent solvent mixtures (T)
    F005 The following spent non-halogenated solvents: Toluene, methyl ethyl ketone, carbon disulfide, isobutanol, pyridine, benzene, 2-ethoxyethanol, and 2-nitropropane; all spent solvent mixtures/blends containing, before use, a total of ten percent or more (by volume) of one or more of the above non-halogenated solvents or those solvents listed in F001, F002, or F004; and still bottoms from the recovery of these spent solvents and spent solvent mixtures (I, T)
    F006 Wastewater treatment sludges from electroplating operations except from the following processes: (1) Sulfuric acid anodizing of aluminum; (2) tin plating on carbon steel; (3) zinc plating (segregated basis) on carbon steel; (4) aluminum or zinc-aluminum plating on carbon steel; (5) cleaning/stripping associated with tin, zinc and aluminum plating on carbon steel; and (6) chemical etching and milling of aluminum (T)
    F007 Spent cyanide plating bath solutions from electroplating operations (R, T)
    F008 Plating bath residues from the bottom of plating baths from electroplating operations where cyanides are used in the process (R, T)
    F009 Spent stripping and cleaning bath solutions from electroplating operations where cyanides are used in the process. Quenching bath residues from oil baths from metal heat treating operations where cyanides are used in the process (R, T)
    F010 Quenching bath residues from oil baths from metal heat treating operations where cyanides are used in the process (R, T)
    F011 Spent cyanide solutions from salt bath pot cleaning from metal heat treating operations (R, T)
    F012 Quenching waste water treatment sludges from metal heat treating operations where cyanides are used in the process (T)
    F019 Wastewater treatment sludges from the chemical conversion coating of aluminum except from zirconium phosphating in aluminum can washing when such phosphating is an exclusive conversion coating process. Wastewater treatment sludges from the manufacturing of motor vehicles using a zinc phosphating process will not be subject to this listing at the point of generation if the wastes are not placed outside on the land prior to shipment to a landfill for disposal and are either: disposed in a Subtitle D municipal or industrial landfill unit that is equipped with a single clay liner and is permitted, licensed or otherwise authorized by the state; or disposed in a landfill unit subject to, or otherwise meeting, the landfill requirements in §258.40, §264.301 or §265.301. For the purposes of this listing, motor vehicle manufacturing is defined in paragraph (b)(4)(i) of this section and (b)(4)(ii) of this section describes the recordkeeping requirements for motor vehicle manufacturing facilities (T)
    F020 Wastes (except wastewater and spent carbon from hydrogen chloride purification) from the production or manufacturing use (as a reactant, chemical intermediate, or component in a formulating process) of tri- or tetrachlorophenol, or of intermediates used to produce their pesticide derivatives. (This listing does not include wastes from the production of Hexachlorophene from highly purified 2,4,5-trichlorophenol.) (H)
    F021 Wastes (except wastewater and spent carbon from hydrogen chloride purification) from the production or manufacturing use (as a reactant, chemical intermediate, or component in a formulating process) of pentachlorophenol, or of intermediates used to produce its derivatives (H)
    F022 Wastes (except wastewater and spent carbon from hydrogen chloride purification) from the manufacturing use (as a reactant, chemical intermediate, or component in a formulating process) of tetra-, penta-, or hexachlorobenzenes under alkaline conditions (H)
    F023 Wastes (except wastewater and spent carbon from hydrogen chloride purification) from the production of materials on equipment previously used for the production or manufacturing use (as a reactant, chemical intermediate, or component in a formulating process) of tri- and tetrachlorophenols. (This listing does not include wastes from equipment used only for the production or use of Hexachlorophene from highly purified 2,4,5-trichlorophenol.) (H)
    F024 Process wastes, including but not limited to, distillation residues, heavy ends, tars, and reactor clean-out wastes, from the production of certain chlorinated aliphatic hydrocarbons by free radical catalyzed processes. These chlorinated aliphatic hydrocarbons are those having carbon chain lengths ranging from one to and including five, with varying amounts and positions of chlorine substitution. (This listing does not include wastewaters, wastewater treatment sludges, spent catalysts, and wastes listed in §261.31 or §261.32.) (T)
    F025 Condensed light ends, spent filters and filter aids, and spent desiccant wastes from the production of certain chlorinated aliphatic hydrocarbons, by free radical catalyzed processes. These chlorinated aliphatic hydrocarbons are those having carbon chain lengths ranging from one to and including five, with varying amounts and positions of chlorine substitution (T)
    F026 Wastes (except wastewater and spent carbon from hydrogen chloride purification) from the production of materials on equipment previously used for the manufacturing use (as a reactant, chemical intermediate, or component in a formulating process) of tetra-, penta-, or hexachlorobenzene under alkaline conditions (H)
    F027 Discarded unused formulations containing tri-, tetra-, or pentachlorophenol or discarded unused formulations containing compounds derived from these chlorophenols. (This listing does not include formulations containing Hexachlorophene sythesized from prepurified 2,4,5-trichlorophenol as the sole component.) (H)
    F028 Residues resulting from the incineration or thermal treatment of soil contaminated with EPA Hazardous Waste Nos. F020, F021, F022, F023, F026, and F027 (T)
    F032 Wastewaters (except those that have not come into contact with process contaminants), process residuals, preservative drippage, and spent formulations from wood preserving processes generated at plants that currently use or have previously used chlorophenolic formulations (except potentially cross-contaminated wastes that have had the F032 waste code deleted in accordance with §261.35 of this chapter or potentially cross-contaminated wastes that are otherwise currently regulated as hazardous wastes (i.e., F034 or F035), and where the generator does not resume or initiate use of chlorophenolic formulations). This listing does not include K001 bottom sediment sludge from the treatment of wastewater from wood preserving processes that use creosote and/or pentachlorophenol (T)
    F034 Wastewaters (except those that have not come into contact with process contaminants), process residuals, preservative drippage, and spent formulations from wood preserving processes generated at plants that use creosote formulations. This listing does not include K001 bottom sediment sludge from the treatment of wastewater from wood preserving processes that use creosote and/or pentachlorophenol (T)
    F035 Wastewaters (except those that have not come into contact with process contaminants), process residuals, preservative drippage, and spent formulations from wood preserving processes generated at plants that use inorganic preservatives containing arsenic or chromium. This listing does not include K001 bottom sediment sludge from the treatment of wastewater from wood preserving processes that use creosote and/or pentachlorophenol (T)
    F037 Petroleum refinery primary oil/water/solids separation sludge—Any sludge generated from the gravitational separation of oil/water/solids during the storage or treatment of process wastewaters and oily cooling wastewaters from petroleum refineries. Such sludges include, but are not limited to, those generated in oil/water/solids separators; tanks and impoundments; ditches and other conveyances; sumps; and stormwater units receiving dry weather flow. Sludge generated in stormwater units that do not receive dry weather flow, sludges generated from non-contact once-through cooling waters segregated for treatment from other process or oily cooling waters, sludges generated in aggressive biological treatment units as defined in §261.31(b)(2) (including sludges generated in one or more additional units after wastewaters have been treated in aggressive biological treatment units) and K051 wastes are not included in this listing. This listing does include residuals generated from processing or recycling oil-bearing hazardous secondary materials excluded under §261.4(a)(12)(i), if those residuals are to be disposed of (T)
    F038 Petroleum refinery secondary (emulsified) oil/water/solids separation sludge—Any sludge and/or float generated from the physical and/or chemical separation of oil/water/solids in process wastewaters and oily cooling wastewaters from petroleum refineries. Such wastes include, but are not limited to, all sludges and floats generated in: induced air flotation (IAF) units, tanks and impoundments, and all sludges generated in DAF units. Sludges generated in stormwater units that do not receive dry weather flow, sludges generated from non-contact once-through cooling waters segregated for treatment from other process or oily cooling waters, sludges and floats generated in aggressive biological treatment units as defined in §261.31(b)(2) (including sludges and floats generated in one or more additional units after wastewaters have been treated in aggressive biological treatment units) and F037, K048, and K051 wastes are not included in this listing (T)
    F039 Leachate (liquids that have percolated through land disposed wastes) resulting from the disposal of more than one restricted waste classified as hazardous under subpart D of this part. (Leachate resulting from the disposal of one or more of the following EPA Hazardous Wastes and no other Hazardous Wastes retains its EPA Hazardous Waste Number(s): F020, F021, F022, F026, F027, and/or F028.) (T)
    K001 Bottom sediment sludge from the treatment of wastewaters from wood preserving processes that use creosote and/or pentachlorophenol (T)
    K002 Wastewater treatment sludge from the production of chrome yellow and orange pigments (T)
    K003 Wastewater treatment sludge from the production of molybdate orange pigments (T)
    K004 Wastewater treatment sludge from the production of zinc yellow pigments (T)
    K005 Wastewater treatment sludge from the production of chrome green pigments (T)
    K006 Wastewater treatment sludge from the production of chrome oxide green pigments (anhydrous and hydrated) (T)
    K007 Wastewater treatment sludge from the production of iron blue pigments (T)
    K008 Oven residue from the production of chrome oxide green pigments (T)
    K009 Distillation bottoms from the production of acetaldehyde from ethylene (T)
    K010 Distillation side cuts from the production of acetaldehyde from ethylene (T)
    K011 Bottom stream from the wastewater stripper in the production of acrylonitrile (R, T)
    K013 Bottom stream from the acetonitrile column in the production of acrylonitrile (R, T)
    K014 Bottoms from the acetonitrile purification column in the production of acrylonitrile (T)
    K015 Still bottoms from the distillation of benzyl chloride (T)
    K016 Heavy ends or distillation residues from the production of carbon tetrachloride (T)
    K017 Heavy ends (still bottoms) from the purification column in the production of epichlorohydrin (T)
    K018 Heavy ends from the fractionation column in ethyl chloride production (T)
    K019 Heavy ends from the distillation of ethylene dichloride in ethylene dichloride production (T)
    K020 Heavy ends from the distillation of vinyl chloride in vinyl chloride monomer production (T)
    K021 Aqueous spent antimony catalyst waste from fluoromethanes production (T)
    K022 Distillation bottom tars from the production of phenol/acetone from cumene (T)
    K023 Distillation light ends from the production of phthalic anhydride from naphthalene (T)
    K024 Distillation bottoms from the production of phthalic anhydride from naphthalene (T)
    K025 Distillation bottoms from the production of nitrobenzene by the nitration of benzene (T)
    K026 Stripping still tails from the production of methyl ethyl pyridines (T)
    K027 Centrifuge and distillation residues from toluene diisocyanate production (R, T)
    K028 Spent catalyst from the hydrochlorinator reactor in the production of 1,1,1-trichloroethane (T)
    K029 Waste from the product steam stripper in the production of 1,1,1-trichloroethane (T)
    K030 Column bottoms or heavy ends from the combined production of trichloroethylene and perchloroethylene (T)
    K083 Distillation bottoms from aniline production (T)
    K085 Distillation or fractionation column bottoms from the production of chlorobenzenes (T)
    K093 Distillation light ends from the production of phthalic anhydride from ortho-xylene (T)
    K094 Distillation bottoms from the production of phthalic anhydride from ortho-xylene (T)
    K095 Distillation bottoms from the production of 1,1,1-trichloroethane (T)
    K096 Heavy ends from the heavy ends column from the production of 1,1,1-trichloroethane (T)
    K103 Process residues from aniline extraction from the production of aniline (T)
    K104 Combined wastewater streams generated from nitrobenzene/aniline production (T)
    K105 Separated aqueous stream from the reactor product washing step in the production of chlorobenzenes (T)
    K107 Column bottoms from product separation from the production of 1,1-dimethylhydrazine (UDMH) from carboxylic acid hydrazides (C, T)
    K108 Condensed column overheads from product separation and condensed reactor vent gases from the production of 1,1-dimethylhydrazine (UDMH) from carboxylic acid hydrazides (I, T)
    K109 Spent filter cartridges from product purification from the production of 1,1-dimethylhydrazine (UDMH) from carboxylic acid hydrazides (T)
    K110 Condensed column overheads from intermediate separation from the production of 1,1-dimethylhydrazine (UDMH) from carboxylic acid hydrazides (T)
    K111 Product washwaters from the production of dinitrotoluene via nitration of toluene (C, T)
    K112 Reaction by-product water from the drying column in the production of toluenediamine via hydrogenation of dinitrotoluene (T)
    K113 Condensed liquid light ends from the purification of toluenediamine in the production of toluenediamine via hydrogenation of dinitrotoluene (T)
    K114 Vicinals from the purification of toluenediamine in the production of toluenediamine via hydrogenation of dinitrotoluene (T)
    K115 Heavy ends from the purification of toluenediamine in the production of toluenediamine via hydrogenation of dinitrotoluene (T)
    K116 Organic condensate from the solvent recovery column in the production of toluene diisocyanate via phosgenation of toluenediamine (T)
    K117 Wastewater from the reactor vent gas scrubber in the production of ethylene dibromide via bromination of ethene (T)
    K118 Spent adsorbent solids from purification of ethylene dibromide in the production of ethylene dibromide via bromination of ethene (T)
    K136 Still bottoms from the purification of ethylene dibromide in the production of ethylene dibromide via bromination of ethene (T)
    K149 Distillation bottoms from the production of alpha- (or methyl-) chlorinated toluenes, ring-chlorinated toluenes, benzoyl chlorides, and compounds with mixtures of these functional groups, (This waste does not include still bottoms from the distillation of benzyl chloride.) (T)
    K150 Organic residuals, excluding spent carbon adsorbent, from the spent chlorine gas and hydrochloric acid recovery processes associated with the production of alpha- (or methyl-) chlorinated toluenes, ring-chlorinated toluenes, benzoyl chlorides, and compounds with mixtures of these functional groups (T)
    K151 Wastewater treatment sludges, excluding neutralization and biological sludges, generated during the treatment of wastewaters from the production of alpha- (or methyl-) chlorinated toluenes, ring-chlorinated toluenes, benzoyl chlorides, and compounds with mixtures of these functional groups (T)
    K156 Organic waste (including heavy ends, still bottoms, light ends, spent solvents, filtrates, and decantates) from the production of carbamates and carbamoyl oximes. (This listing does not apply to wastes generated from the manufacture of 3-iodo-2-propynyl n-butylcarbamate.) (T)
    K157 Wastewaters (including scrubber waters, condenser waters, washwaters, and separation waters) from the production of carbamates and carbamoyl oximes. (This listing does not apply to wastes generated from the manufacture of 3-iodo-2-propynyl n-butylcarbamate.) (T)
    K158 Bag house dusts and filter/separation solids from the production of carbamates and carbamoyl oximes. (This listing does not apply to wastes generated from the manufacture of 3-iodo-2-propynyl n-butylcarbamate.) (T)
    K159 Organics from the treatment of thiocarbamate wastes (T)
    K161 Purification solids (including filtration, evaporation, and centrifugation solids), bag house dust and floor sweepings from the production of dithiocarbamate acids and their salts. (This listing does not include K125 or K126.) (R, T)
    K174 Wastewater treatment sludges from the production of ethylene dichloride or vinyl chloride monomer (including sludges that result from commingled ethylene dichloride or vinyl chloride monomer wastewater and other wastewater), unless the sludges meet the following conditions: (i) they are disposed of in a subtitle C or non-hazardous landfill licensed or permitted by the state or federal government; (ii) they are not otherwise placed on the land prior to final disposal; and (iii) the generator maintains documentation demonstrating that the waste was either disposed of in an on-site landfill or consigned to a transporter or disposal facility that provided a written commitment to dispose of the waste in an off-site landfill. Respondents in any action brought to enforce the requirements of subtitle C must, upon a showing by the government that the respondent managed wastewater treatment sludges from the production of vinyl chloride monomer or ethylene dichloride, demonstrate that they meet the terms of the exclusion set forth above. In doing so, they must provide appropriate documentation (e.g., contracts between the generator and the landfill owner/operator, invoices documenting delivery of waste to landfill, etc.) that the terms of the exclusion were met (T)
    K175 Wastewater treatment sludges from the production of vinyl chloride monomer using mercuric chloride catalyst in an acetylene-based process (T)
    K181 Nonwastewaters from the production of dyes and/or pigments (including nonwastewaters commingled at the point of generation with nonwastewaters from other processes) that, at the point of generation, contain mass loadings of any of the constituents identified in paragraph (c) of this section that are equal to or greater than the corresponding paragraph (c) levels, as determined on a calendar year basis. These wastes will not be hazardous if the nonwastewaters are: (i) disposed in a Subtitle D landfill unit subject to the design criteria in §258.40, (ii) disposed in a Subtitle C landfill unit subject to either §264.301 or §265.301, (iii) disposed in other Subtitle D landfill units that meet the design criteria in §258.40, §264.301, or §265.301, or (iv) treated in a combustion unit that is permitted under Subtitle C, or an onsite combustion unit that is permitted under the Clean Air Act. For the purposes of this listing, dyes and/or pigments production is defined in paragraph (b)(1) of this section. Paragraph (d) of this section describes the process for demonstrating that a facility's nonwastewaters are not K181. This listing does not apply to wastes that are otherwise identified as hazardous under §§261.21-261.24 and 261.31-261.33 at the point of generation. Also, the listing does not apply to wastes generated before any annual mass loading limit is met (T)
    K071 Brine purification muds from the mercury cell process in chlorine production, where separately prepurified brine is not used (T)
    K073 Chlorinated hydrocarbon waste from the purification step of the diaphragm cell process using graphite anodes in chlorine production (T)
    K106 Wastewater treatment sludge from the mercury cell process in chlorine production (T)
    K176 Wastewater treatment sludge from the mercury cell process in chlorine production (E)
    K177 Slag from the production of antimony oxide that is speculatively accumulated or disposed, including slag from the production of intermediates (e.g., antimony metal or crude antimony oxide) (T)
    K178 Residues from manufacturing and manufacturing-site storage of ferric chloride from acids formed during the production of titanium dioxide using the chloride-ilmenite process (T)
    K031 By-product salts generated in the production of MSMA and cacodylic acid (T)
    K032 Wastewater treatment sludge from the production of chlordane (T)
    K033 Wastewater and scrub water from the chlorination of cyclopentadiene in the production of chlordane (T)
    K034 Filter solids from the filtration of hexachlorocyclopentadiene in the production of chlordane (T)
    K035 Wastewater treatment sludges generated in the production of creosote (T)
    K036 Still bottoms from toluene reclamation distillation in the production of disulfoton (T)
    K037 Wastewater treatment sludges from the production of disulfoton (T)
    K038 Wastewater from the washing and stripping of phorate production (T)
    K039 Filter cake from the filtration of diethylphosphorodithioic acid in the production of phorate (T)
    K040 Wastewater treatment sludge from the production of phorate (T)
    K041 Wastewater treatment sludge from the production of toxaphene (T)
    K042 Heavy ends or distillation residues from the distillation of tetrachlorobenzene in the production of 2,4,5-T (T)
    K043 2,6-Dichlorophenol waste from the production of 2,4-D (T)
    K097 Vacuum stripper discharge from the chlordane chlorinator in the production of chlordane (T)
    K098 Untreated process wastewater from the production of toxaphene (T)
    K099 Untreated wastewater from the production of 2,4-D (T)
    K123 Process wastewater (including supernates, filtrates, and washwaters) from the production of ethylenebisdithiocarbamic acid and its salt (T)
    K124 Reactor vent scrubber water from the production of ethylenebisdithiocarbamic acid and its salts (C, T)
    K125 Filtration, evaporation, and centrifugation solids from the production of ethylenebisdithiocarbamic acid and its salts (T)
    K126 Baghouse dust and floor sweepings in milling and packaging operations from the production or formulation of ethylenebisdithiocarbamic acid and its salts (T)
    K131 Wastewater from the reactor and spent sulfuric acid from the acid dryer from the production of methyl bromide (C, T)
    K132 Spent absorbent and wastewater separator solids from the production of methyl bromide (T)
    K044 Wastewater treatment sludges from the manufacturing and processing of explosives (R)
    K045 Spent carbon from the treatment of wastewater containing explosives (R)
    K046 Wastewater treatment sludges from the manufacturing, formulation and loading of lead-based initiating compounds (T)
    K047 Pink/red water from TNT operations (R)
    K048 Dissolved air flotation (DAF) float from the petroleum refining industry (T)
    K049 Slop oil emulsion solids from the petroleum refining industry (T)
    K050 Heat exchanger bundle cleaning sludge from the petroleum refining industry (T)
    K051 API separator sludge from the petroleum refining industry (T)
    K052 Tank bottoms (leaded) from the petroleum refining industry (T)
    K169 Crude oil storage tank sediment from petroleum refining operations (T)
    K170 Clarified slurry oil tank sediment and/or in-line filter/separation solids from petroleum refining operations (T)
    K171 Spent Hydrotreating catalyst from petroleum refining operations, including guard beds used to desulfurize feeds to other catalytic reactors (this listing does not include inert support media) (I, T)
    K172 Spent Hydrorefining catalyst from petroleum refining operations, including guard beds used to desulfurize feeds to other catalytic reactors (this listing does not include inert support media) (I, T)
    K061 Emission control dust/sludge from the primary production of steel in electric furnaces (T)
    K062 Spent pickle liquor generated by steel finishing operations of facilities within the iron and steel industry (SIC Codes 331 and 332) (C, T)
    K088 Spent potliners from primary aluminum reduction (T)
    K069 Emission control dust/sludge from secondary lead smelting. (Note: This listing is stayed administratively for sludge generated from secondary acid scrubber systems. The stay will remain in effect until further administrative action is taken. If EPA takes further action effecting this stay, EPA will publish a notice of the action in the Federal Register) (T)
    K100 Waste leaching solution from acid leaching of emission control dust/sludge from secondary lead smelting (T)
    K084 Wastewater treatment sludges generated during the production of veterinary pharmaceuticals from arsenic or organo-arsenic compounds (T)
    K101 Distillation tar residues from the distillation of aniline-based compounds in the production of veterinary pharmaceuticals from arsenic or organo-arsenic compounds (T)
    K102 Residue from the use of activated carbon for decolorization in the production of veterinary pharmaceuticals from arsenic or organo-arsenic compounds (T)
    K086 Solvent washes and sludges, caustic washes and sludges, or water washes and sludges from cleaning tubs and equipment used in the formulation of ink from pigments, driers, soaps, and stabilizers containing chromium and lead (T)
    K060 Ammonia still lime sludge from coking operations (T)
    K087 Decanter tank tar sludge from coking operations (T)
    K141 Process residues from the recovery of coal tar, including, but not limited to, collecting sump residues from the production of coke from coal or the recovery of coke by-products produced from coal. This listing does not include K087 (decanter tank tar sludges from coking operations) (T)
    K142 Tar storage tank residues from the production of coke from coal or from the recovery of coke by-products produced from coal (T)
    K143 Process residues from the recovery of light oil, including, but not limited to, those generated in stills, decanters, and wash oil recovery units from the recovery of coke by-products produced from coal (T)
    K144 Wastewater sump residues from light oil refining, including, but not limited to, intercepting or contamination sump sludges from the recovery of coke by-products produced from coal (T)
    K145 Residues from naphthalene collection and recovery operations from the recovery of coke by-products produced from coal (T)
    K147 Tar storage tank residues from coal tar refining (T)
    K148 Residues from coal tar distillation, including but not limited to, still bottoms (T)

    *To indicate its reason for listing a waste, EPA assigns a hazard code to each waste listed on the F and K list. An explanation of each of the codes is below:

    (T) - Toxic Waste
    (H) - Acute Hazardous Waste
    (I) - Ignitable Waste
    (C) - Corrosive Waste
    (R) - Reactive Waste
    (E) - Toxicity Characteristic Waste

    The first two hazard codes shown above apply to listed wastes whose constituents pose additional threat to human health and the environment. The last four hazard codes apply to wastes that have been listed because they typically exhibit one of the four regulatory characteristics of hazardous waste.

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    The P and U Lists

    The P and U lists designate as hazardous waste pure and commercial grade formulations of certain unused chemicals that are being disposed. For a waste to be considered a P- or U-listed waste it must meeting the following three criteria:

    • The waste must contain one of the chemicals listed on the P or U list;
    • The chemical in the waste must be unused; and
    • The chemical in the waste must be in the form of a commercial chemical product.

    EPA defines a commercial chemical product for P and U list purposes as a chemical that is either 100 percent pure, technical (e.g., commercial) grade or the sole active ingredient in a chemical formulation.

    The P-list identifies acute hazardous wastes from discarded commercial chemical products. The P-list can be found at 40 CFR section 261.33. The U-list identifies hazardous wastes from discarded commercial chemical products. The U-list wastes can be found at 40 CFR section 261.33.

    Use the table below to search for and sort by hazardous wastes listed on the P and U lists:

    Hazardous Waste No. Chemical Abstract No. Substance**
    P001 181-81-2 2H-1-Benzopyran-2-one, 4-hydroxy-3-(3-oxo-1-phenylbutyl)-, & salts, when present at concentrations greater than 0.3%
    P001 181-81-2 Warfarin, & salts, when present at concentrations greater than 0.3%
    P002 591-08-2 Acetamide, -(aminothioxomethyl)-
    P002 591-08-2 1-Acetyl-2-thiourea
    P003 107-02-8 Acrolein
    P003 107-02-8 2-Propenal
    P004 309-00-2 Aldrin
    P004 309-00-2 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,8abeta)-
    P005 107-18-6 Allyl alcohol
    P005 107-18-6 2- Propen-1-ol
    P006 20859-73-8 Aluminum phosphide (R,T)
    P007 2763-96-4 5-(Aminomethyl)-3-isoxazolol
    P007 2763-96-4 3(2H)-Isoxazolone, 5-(aminomethyl)-
    P008 504-24-5 4-Aminopyridine
    P008 504-24-5 4-Pyridinamine
    P009 131-74-8 Ammonium picrate (R)
    P009 131-74-8 Phenol, 2,4,6-trinitro-, ammonium salt (R)
    P010 7778-39-4 Arsenic acid H3 AsO4
    P011 1303-28-2 Arsenic oxide As2 O5
    P011 1303-28-2 Arsenic pentoxide
    P012 1327-53-3 Arsenic oxide As2 O3
    P012 1327-53-3 Arsenic trioxide
    P013 542-62-1 Barium cyanide
    P014 108-98-5 Benzenethiol
    P014 108-98-5 Thiophenol
    P015 7440-41-7 Beryllium powder
    P016 542-88-1 Dichloromethyl ether
    P016 542-88-1 Methane, oxybis[chloro-
    P017 598-31-2 Bromoacetone
    P017 598-31-2 2-Propanone, 1-bromo-
    P018 357-57-3 Brucine
    P018 357-57-3 Strychnidin-10-one, 2,3-dimethoxy-
    P020 88-85-7 Dinoseb
    P020 88-85-7 Phenol, 2-(1-methylpropyl)-4,6-dinitro-
    P021 592-01-8 Calcium cyanide
    P021 592-01-8 Calcium cyanide Ca(CN)2
    P022 75-15-0 Carbon disulfide
    P023 107-20-0 Acetaldehyde, chloro-
    P023 107-20-0 Chloroacetaldehyde
    P024 106-47-8 Benzenamine, 4-chloro-
    P024 106-47-8 p-Chloroaniline
    P026 5344-82-1 1-(o-Chlorophenyl)thiourea
    P026 5344-82-1 Thiourea, (2-chlorophenyl)-
    P027 542-76-7 3-Chloropropionitrile
    P027 542-76-7 Propanenitrile, 3-chloro-
    P028 100-44-7 Benzene, (chloromethyl)-
    P028 100-44-7 Benzyl chloride
    P029 544-92-3 Copper cyanide
    P029 544-92-3 Copper cyanide Cu(CN)
    P030   Cyanides (soluble cyanide salts), not otherwise specified
    P031 460-19-5 Cyanogen
    P031 460-19-5 Ethanedinitrile
    P033 506-77-4 Cyanogen chloride
    P033 506-77-4 Cyanogen chloride (CN)Cl
    P034 131-89-5 2-Cyclohexyl-4,6-dinitrophenol
    P034 131-89-5 Phenol, 2-cyclohexyl-4,6-dinitro-
    P036 696-28-6 Arsonous dichloride, phenyl-
    P036 696-28-6 Dichlorophenylarsine
    P037 60-57-1 Dieldrin
    P037 60-57-1 2,7:3,6-Dimethanonaphth[2,3-b]oxirene, 3,4,5,6,9,9-hexachloro-1a,2,2a,3,6,6a,7,7a-octahydro-, (1aalpha,2beta,2aalpha,3beta,6beta,6aalpha,7beta, 7aalpha)-
    P038 692-42-2 Arsine, diethyl-
    P038 692-42-2 Diethylarsine
    P039 298-04-4 Disulfoton
    P039 298-04-4 Phosphorodithioic acid, O,O-diethyl S-[2-(ethylthio)ethyl] ester
    P040 297-97-2 O,O-Diethyl O-pyrazinyl phosphorothioate
    P040 297-97-2 Phosphorothioic acid, O,O-diethyl O-pyrazinyl ester
    P041 311-45-5 Diethyl-p-nitrophenyl phosphate
    P041 311-45-5 Phosphoric acid, diethyl 4-nitrophenyl ester
    P042 51-43-4 1,2-Benzenediol, 4-[1-hydroxy-2-(methylamino)ethyl]-, (R)-
    P042 51-43-4 Epinephrine
    P043 55-91-4 Diisopropylfluorophosphate (DFP)
    P043 55-91-4 Phosphorofluoridic acid, bis(1-methylethyl) ester
    P044 60-51-5 Dimethoate
    P044 60-51-5 Phosphorodithioic acid, O,O-dimethyl S-[2-(methyl amino)-2-oxoethyl] ester
    P045 39196-18-4 2-Butanone, 3,3-dimethyl-1-(methylthio)-, O-[(methylamino)carbonyl] oxime
    P045 39196-18-4 Thiofanox
    P046 122-09-8 Benzeneethanamine, alpha,alpha-dimethyl-
    P046 122-09-8 alpha,alpha-Dimethylphenethylamine
    P047 1534-52-1 4,6-Dinitro-o-cresol, & salts
    P047 1534-52-1 Phenol, 2-methyl-4,6-dinitro-, & salts
    P048 51-28-5 2,4-Dinitrophenol
    P048 51-28-5 Phenol, 2,4-dinitro-
    P049 541-53-7 Dithiobiuret
    P049 541-53-7 Thioimidodicarbonic diamide [(H2 N)C(S)]2 NH
    P050 115-29-7 Endosulfan
    P050 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
    P051 172-20-8 2,7:3,6-Dimethanonaphth [2,3-b]oxirene, 3,4,5,6,9,9-hexachloro-1a,2,2a,3,6,6a,7,7a-octahydro-, (1aalpha,2beta,2abeta,3alpha,6alpha,6abeta,7beta, 7aalpha)-, & metabolites
    P051 72-20-8 Endrin
    P051 72-20-8 Endrin, & metabolites
    P054 151-56-4 Aziridine
    P054 151-56-4 Ethyleneimine
    P056 7782-41-4 Fluorine
    P057 640-19-7 Acetamide, 2-fluoro-
    P057 640-19-7 Fluoroacetamide
    P058 62-74-8 Acetic acid, fluoro-, sodium salt
    P058 62-74-8 Fluoroacetic acid, sodium salt
    P059 76-44-8 Heptachlor
    P059 76-44-8 4,7-Methano-1H-indene, 1,4,5,6,7,8,8-heptachloro-3a,4,7,7a-tetrahydro-
    P060 465-73-6 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)-
    P060 465-73-6 Isodrin
    P062 757-58-4 Hexaethyl tetraphosphate
    P062 757-58-4 Tetraphosphoric acid, hexaethyl ester
    P063 74-90-8 Hydrocyanic acid
    P063 74-90-8 Hydrogen cyanide
    P064 624-83-9 Methane, isocyanato-
    P064 624-83-9 Methyl isocyanate
    P065 628-86-4 Fulminic acid, mercury(2 + ) salt (R,T)
    P065 628-86-4 Mercury fulminate (R,T)
    P066 16752-77-5 Ethanimidothioic acid, N-[ [(methylamino)carbonyl]oxy]-, methyl ester
    P066 16752-77-5 Methomyl
    P067 75-55-8 Aziridine, 2-methyl-
    P067 75-55-8 1,2-Propylenimine
    P068 60-34-4 Hydrazine, methyl-
    P068 60-34-4 Methyl hydrazine
    P069 75-86-5 2-Methyllactonitrile
    P069 75-86-5 Propanenitrile, 2-hydroxy-2-methyl-
    P070 116-06-3 Aldicarb
    P070 116-06-3 Propanal, 2-methyl-2-(methylthio)-, O-[(methylamino)carbonyl]oxime
    P071 298-00-0 Methyl parathion
    P071 298-00-0 Phosphorothioic acid, O,O,-dimethyl O-(4-nitrophenyl) ester
    P072 86-88-4 alpha-Naphthylthiourea
    P072 86-88-4 Thiourea, 1-naphthalenyl-
    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 154-11-5 Nicotine, & salts
    P075 154-11-5 Pyridine, 3-(1-methyl-2-pyrrolidinyl)-, (S)-, & salts
    P076 10102-43-9 Nitric oxide
    P076 10102-43-9 Nitrogen oxide NO
    P077 100-01-6 Benzenamine, 4-nitro-
    P077 100-01-6 p-Nitroaniline
    P078 10102-44-0 Nitrogen dioxide
    P078 10102-44-0 Nitrogen oxide NO2
    P081 55-63-0 Nitroglycerine (R)
    P081 55-63-0 1,2,3-Propanetriol, trinitrate (R)
    P082 62-75-9 Methanamine, -methyl-N-nitroso-
    P082 62-75-9 N-Nitrosodimethylamine
    P084 4549-40-0 N-Nitrosomethylvinylamine
    P084 4549-40-0 Vinylamine, -methyl-N-nitroso-
    P085 152-16-9 Diphosphoramide, octamethyl-
    P085 152-16-9 Octamethylpyrophosphoramide
    P087 20816-12-0 Osmium oxide OsO4, (T-4)-
    P087 20816-12-0 Osmium tetroxide
    P088 145-73-3 Endothall
    P088 145-73-3 7-Oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid
    P089 56-38-2 Parathion
    P089 56-38-2 Phosphorothioic acid, O,O-diethyl O-(4-nitrophenyl) ester
    P092 62-38-4 Mercury, (acetato-O)phenyl-
    P092 62-38-4 Phenylmercury acetate
    P093 103-85-5 Phenylthiourea
    P093 103-85-5 Thiourea, phenyl-
    P094 298-02-2 Phorate
    P094 298-02-2 Phosphorodithioic acid, O,O-diethyl S-[(ethylthio)methyl] ester
    P095 75-44-5 Carbonic dichloride
    P095 75-44-5 Phosgene
    P096 7803-51-2 Hydrogen phosphide
    P096 7803-51-2 Phosphine
    P097 52-85-7 Famphur
    P097 52-85-7 Phosphorothioic acid, O-[4-[(dimethylamino)sulfonyl]phenyl] O,O-dimethyl ester
    P098 151-50-8 Potassium cyanide
    P098 151-50-8 Potassium cyanide K(CN)
    P099 506-61-6 Argentate(1-), bis(cyano-C)-, potassium
    P099 506-61-6 Potassium silver cyanide
    P101 107-12-0 Ethyl cyanide
    P101 107-12-0 Propanenitrile
    P102 107-19-7 Propargyl alcohol
    P102 107-19-7 2-Propyn-1-ol
    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 1157-24-9 Strychnidin-10-one, & salts
    P108 1157-24-9 Strychnine, & salts
    P109 3689-24-5 Tetraethyldithiopyrophosphate
    P109 3689-24-5 Thiodiphosphoric acid, tetraethyl ester
    P110 78-00-2 Plumbane, tetraethyl-
    P110 78-00-2 Tetraethyl lead
    P111 107-49-3 Diphosphoric acid, tetraethyl ester
    P111 107-49-3 Tetraethyl pyrophosphate
    P112 509-14-8 Methane, tetranitro-(R)
    P112 509-14-8 Tetranitromethane (R)
    P113 1314-32-5 Thallic oxide
    P113 1314-32-5 Thallium oxide Tl2 O3
    P114 12039-52-0 Selenious acid, dithallium(1 + ) salt
    P114 12039-52-0 Tetraethyldithiopyrophosphate
    P115 7446-18-6 Thiodiphosphoric acid, tetraethyl ester
    P115 7446-18-6 Plumbane, tetraethyl-
    P116 79-19-6 Tetraethyl lead
    P116 79-19-6 Thiosemicarbazide
    P118 75-70-7 Methanethiol, trichloro-
    P118 75-70-7 Trichloromethanethiol
    P119 7803-55-6 Ammonium vanadate
    P119 7803-55-6 Vanadic acid, ammonium salt
    P120 1314-62-1 Vanadium oxide V2O5
    P120 1314-62-1 Vanadium pentoxide
    P121 557-21-1 Zinc cyanide
    P121 557-21-1 Zinc cyanide Zn(CN)2
    P122 1314-84-7 Zinc phosphide Zn3 P2, when present at concentrations greater than 10% (R,T)
    P123 8001-35-2 Toxaphene
    P127 1563-66-2 7-Benzofuranol, 2,3-dihydro-2,2-dimethyl-, methylcarbamate.
    P127 1563-66-2 Carbofuran
    P128 315-18-4 Mexacarbate
    P128 315-18-4 Phenol, 4-(dimethylamino)-3,5-dimethyl-, methylcarbamate (ester)
    P185 26419-73-8 1,3-Dithiolane-2-carboxaldehyde, 2,4-dimethyl-, O-[(methylamino)-carbonyl]oxime.
    P185 26419-73-8 Tirpate
    P188 57-64-7 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)
    P188 57-64-7 Physostigmine salicylate
    P189 55285-14-8 Carbamic acid, [(dibutylamino)-thio]methyl-, 2,3-dihydro-2,2-dimethyl-7-benzofuranyl ester
    P189 55285-14-8 Carbosulfan
    P190 1129-41-5 Carbamic acid, methyl-, 3-methylphenyl ester
    P190 1129-41-5 Metolcarb
    P191 644-64-4 Carbamic acid, dimethyl-, 1-[(dimethyl-amino)carbonyl]-5-methyl-1H-pyrazol-3-yl ester
    P191 644-64-4 Dimetilan
    P192 119-38-0 Carbamic acid, dimethyl-, 3-methyl-1-(1-methylethyl)-1H-pyrazol-5-yl ester
    P192 119-38-0 Isolan
    P194 23135-22-0 Ethanimidthioic acid, 2-(dimethylamino)-N-[ [(methylamino) carbonyl]oxy]-2-oxo-, methyl ester
    P194 23135-22-0 Oxamyl
    P196 15339-36-3 Manganese, bis(dimethylcarbamodithioato-S,S')-,
    P196 15339-36-3 Manganese dimethyldithiocarbamate
    P197 17702-57-7 Formparanate
    P197 17702-57-7 Methanimidamide, N,N-dimethyl-N'-[2-methyl-4-[ [(methylamino)carbonyl]oxy]phenyl]-
    P198 23422-53-9 Formetanate hydrochloride
    P198 23422-53-9 Methanimidamide, N,N-dimethyl-N'-[3-[ [(methylamino)-carbonyl]oxy]phenyl]-monohydrochloride
    P199 2032-65-7 Methiocarb
    P199 2032-65-7 Phenol, (3,5-dimethyl-4-(methylthio)-, methylcarbamate
    P201 2631-37-0 Phenol, 3-methyl-5-(1-methylethyl)-, methyl carbamate
    P201 2631-37-0 Promecarb
    P202 64-00-6 m-Cumenyl methylcarbamate
    P202 64-00-6 3-Isopropylphenyl N-methylcarbamate
    P202 64-00-6 Phenol, 3-(1-methylethyl)-, methyl carbamate
    P203 1646-88-4 Aldicarb sulfone
    P203 1646-88-4 Propanal, 2-methyl-2-(methyl-sulfonyl)-, O-[(methylamino)carbonyl] oxime
    P204 57-47-6 Physostigmine
    P204 57-47-6 Pyrrolo[2,3-b]indol-5-ol, 1,2,3,3a,8,8a-hexahydro-1,3a,8-trimethyl-, methylcarbamate (ester), (3aS-cis)-
    P205 137-30-4 Zinc, bis(dimethylcarbamodithioato-S,S')-,
    P205 137-30-4 Ziram
    U001 75-07-0 Acetaldehyde (I)
    U001 75-07-0 Ethanal (I)
    U002 67-64-1 Acetone (I)
    U002 67-64-1 2-Propanone (I)
    U003 75-05-8 Acetonitrile (I,T)
    U004 98-86-2 Acetophenone
    U004 98-86-2 Ethanone, 1-phenyl-
    U005 53-96-3 Acetamide, -9H-fluoren-2-yl-
    U005 53-96-3 2-Acetylaminofluorene
    U006 75-36-5 Acetyl chloride (C,R,T)
    U007 79-06-1 Acrylamide
    U007 79-06-1 2-Propenamide
    U008 79-10-7 Acrylic acid (I)
    U008 79-10-7 2-Propenoic acid (I)
    U009 107-13-1 Acrylonitrile
    U009 107-13-1 2-Propenenitrile
    U010 50-07-7 Azirino[2',3':3,4]pyrrolo[1,2-a]indole-4,7-dione, 6-amino-8-[ [(aminocarbonyl)oxy]methyl]-1,1a,2,8,8a,8b-hexahydro-8a-methoxy-5-methyl-, [1aS-(1aalpha, 8beta,8aalpha,8balpha)]-
    U010 50-07-7 Mitomycin C
    U011 61-82-5 Amitrole
    U011 61-82-5 1H-1,2,4-Triazol-3-amine
    U012 62-53-3 Aniline (I,T)
    U012 62-53-3 Benzenamine (I,T)
    U014 492-80-8 Auramine
    U014 492-80-8 Benzenamine, 4,4'-carbonimidoylbis[N,N-dimethyl-
    U015 115-02-6 Azaserine
    U015 115-02-6 L-Serine, diazoacetate (ester)
    U016 225-51-4 Benz[c]acridine
    U017 98-87-3 Benzal chloride
    U017 98-87-3 Benzene, (dichloromethyl)-
    U018 56-55-3 Benz[a]anthracene
    U019 71-43-2 Benzene (I,T)
    U020 98-09-9 Benzenesulfonic acid chloride (C,R)
    U020 98-09-9 Benzenesulfonyl chloride (C,R)
    U021 92-87-5 Benzidine
    U021 92-87-5 [1,1'-Biphenyl]-4,4'-diamine
    U022 50-32-8 Benzo[a]pyrene
    U023 98-07-7 Benzene, (trichloromethyl)-
    U023 98-07-7 Benzotrichloride (C,R,T)
    U024 111-91-1 Dichloromethoxy ethane
    U024 111-91-1 Ethane, 1,1'-[methylenebis(oxy)]bis[2-chloro-
    U025 111-44-4 Dichloroethyl ether
    U025 111-44-4 Ethane, 1,1'-oxybis[2-chloro-
    U026 494-03-1 Chlornaphazin
    U026 494-03-1 Naphthalenamine, N,N'-bis(2-chloroethyl)-
    U027 108-60-1 Dichloroisopropyl ether
    U027 108-60-1 Propane, 2,2'-oxybis[2-chloro-
    U028 117-81-7 1,2-Benzenedicarboxylic acid, bis(2-ethylhexyl) ester
    U028 117-81-7 Diethylhexyl phthalate
    U029 74-83-9 Methane, bromo-
    U029 74-83-9 Methyl bromide
    U030 101-55-3 Benzene, 1-bromo-4-phenoxy-
    U030 101-55-3 4-Bromophenyl phenyl ether
    U031 71-36-3 1-Butanol (I)
    U031 71-36-3 n-Butyl alcohol (I)
    U032 13765-19-0 Calcium chromate
    U032 13765-19-0 Chromic acid H2 CrO4, calcium salt
    U033 353-50-4 Carbonic difluoride
    U033 353-50-4 Carbon oxyfluoride (R,T)
    U034 75-87-6 Acetaldehyde, trichloro-
    U034 75-87-6 Chloral
    U035 305-03-3 Benzenebutanoic acid, 4-[bis(2-chloroethyl)amino]-
    U035 305-03-3 Chlorambucil
    U036 57-74-9 Chlordane, alpha & gamma isomers
    U036 57-74-9 4,7-Methano-1H-indene, 1,2,4,5,6,7,8,8-octachloro-2,3,3a,4,7,7a-hexahydro-
    U037 108-90-7 Benzene, chloro-
    U037 108-90-7 Chlorobenzene
    U038 510-15-6 Benzeneacetic acid, 4-chloro-alpha-(4-chlorophenyl)-alpha-hydroxy-, ethyl ester
    U038 510-15-6 Chlorobenzilate
    U039 59-50-7 p-Chloro-m-cresol
    U039 59-50-7 Phenol, 4-chloro-3-methyl-
    U041 106-89-8 Epichlorohydrin
    U041 106-89-8 Oxirane, (chloromethyl)-
    U042 110-75-8 2-Chloroethyl vinyl ether
    U042 110-75-8 Ethene, (2-chloroethoxy)-
    U043 75-01-4 Ethene, chloro-
    U043 75-01-4 Vinyl chloride
    U044 67-66-3 Chloroform
    U044 67-66-3 Methane, trichloro-
    U045 74-87-3 Methane, chloro- (I,T)
    U045 74-87-3 Methyl chloride (I,T)
    U046 107-30-2 Chloromethyl methyl ether
    U046 107-30-2 Methane, chloromethoxy-
    U047 91-58-7 beta-Chloronaphthalene
    U047 91-58-7 Naphthalene, 2-chloro-
    U048 95-57-8 o-Chlorophenol
    U048 95-57-8 Phenol, 2-chloro-
    U049 3165-93-3 Benzenamine, 4-chloro-2-methyl-, hydrochloride
    U049 3165-93-3 4-Chloro-o-toluidine, hydrochloride
    U050 218-01-9 Chrysene
    U051   Creosote
    U052 1319-77-3 Cresol (Cresylic acid)
    U052 1319-77-3 Phenol, methyl-
    U053 4170-30-3 2-Butenal
    U053 4170-30-3 Crotonaldehyde
    U055 98-82-8 Benzene, (1-methylethyl)-(I)
    U055 98-82-8 Cumene (I)
    U056 110-82-7 Benzene, hexahydro-(I)
    U056 110-82-7 Cyclohexane (I)
    U057 108-94-1 Cyclohexanone (I)
    U058 50-18-0 Cyclophosphamide
    U058 50-18-0 2H-1,3,2-Oxazaphosphorin-2-amine, N,N-bis(2-chloroethyl)tetrahydro-, 2-oxide
    U059 20830-81-3 Daunomycin
    U059 20830-81-3 5,12-Naphthacenedione, 8-acetyl-10-[(3-amino-2,3,6-trideoxy)-alpha-L-lyxo-hexopyranosyl)oxy]-7,8,9,10-tetrahydro-6,8,11-trihydroxy-1-methoxy-, (8S-cis)-
    U060 72-54-8 Benzene, 1,1'-(2,2-dichloroethylidene)bis[4-chloro-
    U060 72-54-8 DDD
    U061 50-29-3 Benzene, 1,1'-(2,2,2-trichloroethylidene)bis[4-chloro-
    U061 50-29-3 DDT
    U062 2303-16-4 Carbamothioic acid, bis(1-methylethyl)-, S-(2,3-di chloro-2-propenyl) ester
    U062 2303-16-4 Diallate
    U063 53-70-3 Dibenz[a,h]anthracene
    U064 189-55-9 Benzo[rst]pentaphene
    U064 189-55-9 Dibenzo[a,i]pyrene
    U066 96-12-8 1,2-Dibromo-3-chloropropane
    U066 96-12-8 Propane, 1,2-dibromo-3-chloro-
    U067 106-93-4 Ethane, 1,2-dibromo-
    U067 106-93-4 Ethylene dibromide
    U068 74-95-3 Methane, dibromo-
    U068 74-95-3 Methylene bromide
    U069 84-74-2 1,2-Benzenedicarboxylic acid, dibutyl ester
    U069 84-74-2 Dibutyl phthalate
    U070 95-50-1 Benzene, 1,2-dichloro-
    U070 95-50-1 o-Dichlorobenzene
    U071 541-73-1 Benzene, 1,3-dichloro-
    U071 541-73-1 m-Dichlorobenzene
    U072 106-46-7 Benzene, 1,4-dichloro-
    U072 106-46-7 p-Dichlorobenzene
    U073 91-94-1 [1,1'-Biphenyl]-4,4'-diamine, 3,3'-dichloro-
    U073 91-94-1 3,3'-Dichlorobenzidine
    U074 764-41-0 2-Butene, 1,4-dichloro-(I,T)
    U074 764-41-0 1,4-Dichloro-2-butene (I,T)
    U075 75-71-8 Dichlorodifluoromethane
    U075 75-71-8 Methane, dichlorodifluoro-
    U076 75-34-3 Ethane, 1,1-dichloro-
    U076 75-34-3 Ethylidene dichloride
    U077 107-06-2 Ethane, 1,2-dichloro-
    U077 107-06-2 Ethylene dichloride
    U078 75-35-4 1,1-Dichloroethylene
    U078 75-35-4 Ethene, 1,1-dichloro-
    U079 156-60-5 1,2-Dichloroethylene
    U079 156-60-5 Ethene, 1,2-dichloro-, (E)-
    U080 75-09-2 Methane, dichloro-
    U080 75-09-2 Methylene chloride
    U081 120-83-2 2,4-Dichlorophenol
    U081 120-83-2 Phenol, 2,4-dichloro-
    U082 87-65-0 2,6-Dichlorophenol
    U082 87-65-0 Phenol, 2,6-dichloro-
    U083 78-87-5 Propane, 1,2-dichloro-
    U083 78-87-5 Propylene dichloride
    U084 542-75-6 1,3-Dichloropropene
    U084 542-75-6 1-Propene, 1,3-dichloro-
    U085 1464-53-5 2,2'-Bioxirane
    U085 1464-53-5 1,2:3,4-Diepoxybutane (I,T)
    U086 1615-80-1 N,N'-Diethylhydrazine
    U086 1615-80-1 Hydrazine, 1,2-diethyl-
    U087 3288-58-2 O,O-Diethyl S-methyl dithiophosphate
    U087 3288-58-2 Phosphorodithioic acid, O,O-diethyl S-methyl ester
    U088 84-66-2 1,2-Benzenedicarboxylic acid, diethyl ester
    U088 84-66-2 Diethyl phthalate
    U089 56-53-1 Diethylstilbesterol
    U089 56-53-1 Phenol, 4,4'-(1,2-diethyl-1,2-ethenediyl)bis-, (E)-
    U090 94-58-6 1,3-Benzodioxole, 5-propyl-
    U090 94-58-6 Dihydrosafrole
    U091 119-90-4 [1,1'-Biphenyl]-4,4'-diamine, 3,3'-dimethoxy-
    U091 119-90-4 3,3'-Dimethoxybenzidine
    U092 124-40-3 Dimethylamine (I)
    U092 124-40-3 Methanamine, -methyl-(I)
    U093 60-11-7 Benzenamine, N,N-dimethyl-4-(phenylazo)-
    U093 60-11-7 p-Dimethylaminoazobenzene
    U094 57-97-6 Benz[a]anthracene, 7,12-dimethyl-
    U094 57-97-6 7,12-Dimethylbenz[a]anthracene
    U095 119-93-7 [1,1'-Biphenyl]-4,4'-diamine, 3,3'-dimethyl-
    U095 119-93-7 3,3'-Dimethylbenzidine
    U096 80-15-9 alpha,alpha-Dimethylbenzylhydroperoxide (R)
    U096 80-15-9 Hydroperoxide, 1-methyl-1-phenylethyl-(R)
    U097 79-44-7 Carbamic chloride, dimethyl-
    U097 79-44-7 Dimethylcarbamoyl chloride
    U098 57-14-7 1,1-Dimethylhydrazine
    U098 57-14-7 Hydrazine, 1,1-dimethyl-
    U099 540-73-8 1,2-Dimethylhydrazine
    U099 540-73-8 Hydrazine, 1,2-dimethyl-
    U101 105-67-9 2,4-Dimethylphenol
    U101 105-67-9 Phenol, 2,4-dimethyl-
    U102 131-11-3 1,2-Benzenedicarboxylic acid, dimethyl ester
    U102 131-11-3 Dimethyl phthalate
    U103 77-78-1 Dimethyl sulfate
    U103 77-78-1 Sulfuric acid, dimethyl ester
    U105 121-14-2 Benzene, 1-methyl-2,4-dinitro-
    U105 121-14-2 2,4-Dinitrotoluene
    U106 606-20-2 Benzene, 2-methyl-1,3-dinitro-
    U106 606-20-2 2,6-Dinitrotoluene
    U107 117-84-0 1,2-Benzenedicarboxylic acid, dioctyl ester
    U107 117-84-0 Di-n-octyl phthalate
    U108 123-91-1 1,4-Diethyleneoxide
    U108 123-91-1 1,4-Dioxane
    U109 122-66-7 1,2-Diphenylhydrazine
    U109 122-66-7 Hydrazine, 1,2-diphenyl-
    U110 142-84-7 Dipropylamine (I)
    U110 142-84-7 1-Propanamine, N-propyl-(I)
    U111 621-64-7 Di-n-propylnitrosamine
    U111 621-64-7 1-Propanamine, N-nitroso-N-propyl-
    U112 141-78-6 Acetic acid ethyl ester (I)
    U112 141-78-6 Ethyl acetate (I)
    U113 140-88-5 Ethyl acrylate (I)
    U113 140-88-5 2-Propenoic acid, ethyl ester (I)
    U114 1111-54-6 Carbamodithioic acid, 1,2-ethanediylbis-, salts & esters
    U114 1111-54-6 Ethylenebisdithiocarbamic acid, salts & esters
    U115 75-21-8 Ethylene oxide (I,T)
    U115 75-21-8 Oxirane (I,T)
    U116 96-45-7 Ethylenethiourea
    U116 96-45-7 2-Imidazolidinethione
    U117 60-29-7 Ethane, 1,1'-oxybis-(I)
    U117 60-29-7 Ethyl ether (I)
    U118 97-63-2 Ethyl methacrylate
    U118 97-63-2 2-Propenoic acid, 2-methyl-, ethyl ester
    U119 62-50-0 Ethyl methanesulfonate
    U119 62-50-0 Methanesulfonic acid, ethyl ester
    U120 206-44-0 Fluoranthene
    U121 75-69-4 Methane, trichlorofluoro-
    U121 75-69-4 Trichloromonofluoromethane
    U122 50-00-0 Formaldehyde
    U123 64-18-6 Formic acid (C,T)
    U124 110-00-9 Furan (I)
    U124 110-00-9 Furfuran (I)
    U125 98-01-1 2-Furancarboxaldehyde (I)
    U125 98-01-1 Furfural (I)
    U126 765-34-4 Glycidylaldehyde
    U126 765-34-4 Oxiranecarboxyaldehyde
    U127 118-74-1 Benzene, hexachloro-
    U127 118-74-1 Hexachlorobenzene
    U128 87-68-3 1,3-Butadiene, 1,1,2,3,4,4-hexachloro-
    U128 87-68-3 Hexachlorobutadiene
    U129 58-89-9 Cyclohexane, 1,2,3,4,5,6-hexachloro-, (1alpha,2alpha,3beta,4alpha,5alpha,6beta)-
    U129 58-89-9 Lindane
    U130 77-47-4 1,3-Cyclopentadiene, 1,2,3,4,5,5-hexachloro-
    U130 77-47-4 Hexachlorocyclopentadiene
    U131 67-72-1 Ethane, hexachloro-
    U131 67-72-1 Hexachloroethane
    U132 70-30-4 Hexachlorophene
    U132 70-30-4 Phenol, 2,2'-methylenebis[3,4,6-trichloro-
    U133 302-01-2 Hydrazine (R,T)
    U134 7664-39-3 Hydrofluoric acid (C,T)
    U134 7664-39-3 Hydrogen fluoride (C,T)
    U135 7783-06-4 Hydrogen sulfide
    U135 7783-06-4 Hydrogen sulfide H2S
    U136 75-60-5 Arsinic acid, dimethyl-
    U136 75-60-5 Cacodylic acid
    U137 193-39-5 Indeno[1,2,3-cd]pyrene
    U138 74-88-4 Methane, iodo-
    U138 74-88-4 Methyl iodide
    U140 78-83-1 Isobutyl alcohol (I,T)
    U140 78-83-1 1-Propanol, 2-methyl- (I,T)
    U141 120-58-1 1,3-Benzodioxole, 5-(1-propenyl)-
    U141 120-58-1 Isosafrole
    U142 143-50-0 Kepone
    U142 143-50-0 1,3,4-Metheno-2H-cyclobuta[cd]pentalen-2-one, 1,1a,3,3a,4,5,5,5a,5b,6-decachlorooctahydro-
    U143 303-34-4 2-Butenoic acid, 2-methyl-, 7-[ [2,3-dihydroxy-2-(1-methoxyethyl)-3-methyl-1-oxobutoxy]methyl]-2,3,5,7a-tetrahydro-1H-pyrrolizin-1-yl ester, [1S-[1alpha(Z),7(2S*,3R*),7aalpha] ]-
    U143 303-34-4 Lasiocarpine
    U144 301-04-2 Acetic acid, lead(2 + ) salt
    U144 301-04-2 Lead acetate
    U145 7446-27-7 Lead phosphate
    U145 7446-27-7 Phosphoric acid, lead(2 + ) salt (2:3)
    U146 1335-32-6 Lead, bis(acetato-O)tetrahydroxytri-
    U146 1335-32-6 Lead subacetate
    U147 108-31-6 2,5-Furandione
    U147 108-31-6 Maleic anhydride
    U148 123-33-1 Maleic hydrazide
    U148 123-33-1 3,6-Pyridazinedione, 1,2-dihydro-
    U149 109-77-3 Malononitrile
    U149 109-77-3 Propanedinitrile
    U150 148-82-3 Melphalan
    U150 148-82-3 L-Phenylalanine, 4-[bis(2-chloroethyl)amino]-
    U151 7439-97-6 Mercury
    U152 126-98-7 Methacrylonitrile (I,T)
    U152 126-98-7 2-Propenenitrile, 2-methyl- (I,T)
    U153 74-93-1 Methanethiol (I,T)
    U153 74-93-1 Thiomethanol (I,T)
    U154 67-56-1 Methanol (I)
    U154 67-56-1 Methyl alcohol (I)
    U155 91-80-5 1,2-Ethanediamine, N,N-dimethyl-N'-2-pyridinyl-N'-(2-thienylmethyl)-
    U155 91-80-5 Methapyrilene
    U156 79-22-1 Carbonochloridic acid, methyl ester (I,T)
    U156 79-22-1 Methyl chlorocarbonate (I,T)
    U157 56-49-5 Benz[j]aceanthrylene, 1,2-dihydro-3-methyl-
    U157 56-49-5 3-Methylcholanthrene
    U158 101-14-4 Benzenamine, 4,4'-methylenebis[2-chloro-
    U158 101-14-4 4,4'-Methylenebis(2-chloroaniline)
    U159 78-93-3 2-Butanone (I,T)
    U159 78-93-3 Methyl ethyl ketone (MEK) (I,T)
    U160 1338-23-4 2-Butanone, peroxide (R,T)
    U160 1338-23-4 Methyl ethyl ketone peroxide (R,T)
    U161 108-10-1 Methyl isobutyl ketone (I)
    U161 108-10-1 4-Methyl-2-pentanone (I)
    U161 108-10-1 Pentanol, 4-methyl-
    U162 80-62-6 Methyl methacrylate (I,T)
    U162 80-62-6 2-Propenoic acid, 2-methyl-, methyl ester (I,T)
    U163 70-25-7 Guanidine, -methyl-N'-nitro-N-nitroso-
    U163 70-25-7 MNNG
    U164 56-04-2 Methylthiouracil
    U164 56-04-2 4(1H)-Pyrimidinone, 2,3-dihydro-6-methyl-2-thioxo-
    U165 91-20-3 Naphthalene
    U166 130-15-4 1,4-Naphthalenedione
    U166 130-15-4 1,4-Naphthoquinone
    U167 134-32-7 1-Naphthalenamine
    U167 134-32-7 alpha-Naphthylamine
    U168 91-59-8 2-Naphthalenamine
    U168 91-59-8 beta-Naphthylamine
    U169 98-95-3 Benzene, nitro-
    U169 98-95-3 Nitrobenzene (I,T)
    U170 100-02-7 p-Nitrophenol
    U170 100-02-7 Phenol, 4-nitro-
    U171 79-46-9 2-Nitropropane (I,T)
    U171 79-46-9 Propane, 2-nitro- (I,T)
    U172 924-16-3 1-Butanamine, N-butyl-N-nitroso-
    U172 924-16-3 N-Nitrosodi-n-butylamine
    U173 1116-54-7 Ethanol, 2,2'-(nitrosoimino)bis-
    U173 1116-54-7 N-Nitrosodiethanolamine
    U174 55-18-5 Ethanamine, -ethyl-N-nitroso-
    U174 55-18-5 N-Nitrosodiethylamine
    U176 759-73-9 N-Nitroso-N-ethylurea
    U176 759-73-9 Urea, N-ethyl-N-nitroso-
    U177 684-93-5 N-Nitroso-N-methylurea
    U177 684-93-5 Urea, N-methyl-N-nitroso-
    U178 615-53-2 Carbamic acid, methylnitroso-, ethyl ester
    U178 615-53-2 N-Nitroso-N-methylurethane
    U179 100-75-4 N-Nitrosopiperidine
    U179 100-75-4 Piperidine, 1-nitroso-
    U180 930-55-2 N-Nitrosopyrrolidine
    U180 930-55-2 Pyrrolidine, 1-nitroso-
    U181 99-55-8 Benzenamine, 2-methyl-5-nitro-
    U181 99-55-8 5-Nitro-o-toluidine
    U182 123-63-7 1,3,5-Trioxane, 2,4,6-trimethyl-
    U182 123-63-7 Paraldehyde
    U183 608-93-5 Benzene, pentachloro-
    U183 608-93-5 Pentachlorobenzene
    U184 76-01-7 Ethane, pentachloro-
    U184 76-01-7 Pentachloroethane
    U185 82-68-8 Benzene, pentachloronitro-
    U185 82-68-8 Pentachloronitrobenzene (PCNB)
    U186 504-60-9 1-Methylbutadiene (I)
    U186 504-60-9 1,3-Pentadiene (I)
    U187 62-44-2 Acetamide, -(4-ethoxyphenyl)-
    U187 62-44-2 Phenacetin
    U188 108-95-2 Phenol
    U189 1314-80-3 Phosphorus sulfide (R)
    U189 1314-80-3 Sulfur phosphide (R)
    U190 85-44-9 1,3-Isobenzofurandione
    U190 85-44-9 Phthalic anhydride
    U191 109-06-8 2-Picoline
    U191 109-06-8 Pyridine, 2-methyl-
    U192 23950-58-5 Benzamide, 3,5-dichloro-N-(1,1-dimethyl-2-propynyl)-
    U192 23950-58-5 Pronamide
    U193 1120-71-4 1,2-Oxathiolane, 2,2-dioxide
    U193 1120-71-4 1,3-Propane sultone
    U194 107-10-8 1-Propanamine (I,T)
    U194 107-10-8 n-Propylamine (I,T)
    U196 110-86-1 Pyridine
    U197 106-51-4 p-Benzoquinone
    U197 106-51-4 2,5-Cyclohexadiene-1,4-dione
    U200 50-55-5 Reserpine
    U200 50-55-5 Yohimban-16-carboxylic acid, 11,17-dimethoxy-18-[(3,4,5-trimethoxybenzoyl)oxy]-, methyl ester,(3beta,16beta,17alpha,18beta,20alpha)-
    U201 108-46-3 1,3-Benzenediol
    U201 108-46-3 Resorcinol
    U203 94-59-7 1,3-Benzodioxole, 5-(2-propenyl)-
    U203 94-59-7 Safrole
    U204 7783-00-8 Selenious acid
    U204 7783-00-8 Selenium dioxide
    U205 7488-56-4 Selenium sulfide
    U205 7488-56-4 Selenium sulfide SeS2 (R,T)
    U206 18883-66-4 Glucopyranose, 2-deoxy-2-(3-methyl-3-nitrosoureido)-, D-
    U206 18883-66-4 D-Glucose, 2-deoxy-2-[ [(methylnitrosoamino)-carbonyl]amino]-
    U206 18883-66-4 Streptozotocin
    U207 95-94-3 Benzene, 1,2,4,5-tetrachloro-
    U207 95-94-3 1,2,4,5-Tetrachlorobenzene
    U208 630-20-6 Ethane, 1,1,1,2-tetrachloro-
    U208 630-20-6 1,1,1,2-Tetrachloroethane
    U209 79-34-5 Ethane, 1,1,2,2-tetrachloro-
    U209 79-34-5 1,1,2,2-Tetrachloroethane
    U210 127-18-4 Ethene, tetrachloro-
    U210 127-18-4 Tetrachloroethylene
    U211 56-23-5 Carbon tetrachloride
    U211 56-23-5 Methane, tetrachloro-
    U213 109-99-9 Furan, tetrahydro-(I)
    U213 109-99-9 Tetrahydrofuran (I)
    U214 563-68-8 Acetic acid, thallium(1 + ) salt
    U214 563-68-8 Thallium(I) acetate
    U215 6533-73-9 Carbonic acid, dithallium(1 + ) salt
    U215 6533-73-9 Thallium(I) carbonate
    U216 7791-12-0 Thallium(I) chloride
    U216 7791-12-0 Thallium chloride TlCl
    U217 10102-45-1 Nitric acid, thallium(1 + ) salt
    U217 10102-45-1 Thallium(I) nitrate
    U218 62-55-5 Ethanethioamide
    U218 62-55-5 Thioacetamide
    U219 62-56-6 Thiourea
    U220 108-88-3 Benzene, methyl-
    U220 108-88-3 Toluene
    U221 25376-45-8 Benzenediamine, ar-methyl-
    U221 25376-45-8 Toluenediamine
    U222 636-21-5 Benzenamine, 2-methyl-, hydrochloride
    U222 636-21-5 o-Toluidine hydrochloride
    U223 26471-62-5 Benzene, 1,3-diisocyanatomethyl- (R,T)
    U223 26471-62-5 Toluene diisocyanate (R,T)
    U225 75-25-2 Bromoform
    U225 75-25-2 Methane, tribromo-
    U226 71-55-6 Ethane, 1,1,1-trichloro-
    U226 71-55-6 Methyl chloroform
    U226 71-55-6 1,1,1-Trichloroethane
    U227 79-00-5 Ethane, 1,1,2-trichloro-
    U227 79-00-5 1,1,2-Trichloroethane
    U228 79-01-6 Ethene, trichloro-
    U228 79-01-6 Trichloroethylene
    U234 99-35-4 Benzene, 1,3,5-trinitro-
    U234 99-35-4 1,3,5-Trinitrobenzene (R,T)
    U235 126-72-7 1-Propanol, 2,3-dibromo-, phosphate (3:1)
    U235 126-72-7 Tris(2,3-dibromopropyl) phosphate
    U236 72-57-1 2,7-Naphthalenedisulfonic acid, 3,3'-[(3,3'-dimethyl[1,1'-biphenyl]-4,4'-diyl)bis(azo)bis[5-amino-4-hydroxy]-, tetrasodium salt
    U236 72-57-1 Trypan blue
    U237 66-75-1 2,4-(1H,3H)-Pyrimidinedione, 5-[bis(2-chloroethyl)amino]-
    U237 66-75-1 Uracil mustard
    U238 51-79-6 Carbamic acid, ethyl ester
    U238 51-79-6 Ethyl carbamate (urethane)
    U239 1330-20-7 Benzene, dimethyl- (I,T)
    U239 1330-20-7 Xylene (I)
    U240 194-75-7 Acetic acid, (2,4-dichlorophenoxy)-, salts & esters
    U240 194-75-7 2,4-D, salts & esters
    U243 1888-71-7 Hexachloropropene
    U243 1888-71-7 1-Propene, 1,1,2,3,3,3-hexachloro-
    U244 137-26-8 Thioperoxydicarbonic diamide [(H2N)C(S)]2 S2, tetramethyl-
    U244 137-26-8 Thiram
    U246 506-68-3 Cyanogen bromide (CN)Br
    U247 72-43-5 Benzene, 1,1'-(2,2,2-trichloroethylidene)bis[4- methoxy-
    U247 72-43-5 Methoxychlor
    U248 181-81-2 2H-1-Benzopyran-2-one, 4-hydroxy-3-(3-oxo-1-phenyl-butyl)-, & salts, when present at concentrations of 0.3% or less
    U248 181-81-2 Warfarin, & salts, when present at concentrations of 0.3% or less
    U249 1314-84-7 Zinc phosphide Zn3 P2, when present at concentrations of 10% or less
    U271 17804-35-2 Benomyl
    U271 17804-35-2 Carbamic acid, [1-[(butylamino)carbonyl]-1H-benzimidazol-2-yl]-, methyl ester
    U278 22781-23-3 Bendiocarb
    U278 22781-23-3 1,3-Benzodioxol-4-ol, 2,2-dimethyl-, methyl carbamate
    U279 63-25-2 Carbaryl
    U279 63-25-2 1-Naphthalenol, methylcarbamate
    U280 101-27-9 Barban
    U280 101-27-9 Carbamic acid, (3-chlorophenyl)-, 4-chloro-2-butynyl ester
    U328 95-53-4 Benzenamine, 2-methyl-
    U328 95-53-4 o-Toluidine
    U353 106-49-0 Benzenamine, 4-methyl-
    U353 106-49-0 p-Toluidine
    U359 110-80-5 Ethanol, 2-ethoxy-
    U359 110-80-5 Ethylene glycol monoethyl ether
    U364 22961-82-6 Bendiocarb phenol
    U364 22961-82-6 1,3-Benzodioxol-4-ol, 2,2-dimethyl-,
    U367 1563-38-8 7-Benzofuranol, 2,3-dihydro-2,2-dimethyl-
    U367 1563-38-8 Carbofuran phenol
    U372 10605-21-7 Carbamic acid, 1H-benzimidazol-2-yl, methyl ester
    U372 10605-21-7 Carbendazim
    U373 122-42-9 Carbamic acid, phenyl-, 1-methylethyl ester
    U373 122-42-9 Propham
    U387 52888-80-9 Carbamothioic acid, dipropyl-, S-(phenylmethyl) ester
    U387 52888-80-9 Prosulfocarb
    U389 2303-17-5 Carbamothioic acid, bis(1-methylethyl)-, S-(2,3,3-trichloro-2-propenyl) ester
    U389 2303-17-5 Triallate
    U394 30558-43-1 A2213
    U394 30558-43-1 Ethanimidothioic acid, 2-(dimethylamino)-N-hydroxy-2-oxo-, methyl ester
    U395 5952-26-1 Diethylene glycol, dicarbamate
    U395 5952-26-1 Ethanol, 2,2'-oxybis-, dicarbamate
    U404 121-44-8 Ethanamine, N,N-diethyl-
    U404 121-44-8 Triethylamine
    U409 23564-05-8 Carbamic acid, [1,2-phenylenebis (iminocarbonothioyl)]bis-, dimethyl ester
    U409 23564-05-8 Thiophanate-methyl
    U410 59669-26-0 Ethanimidothioic acid, N,N'-[thiobis[(methylimino)carbonyloxy] ]bis-, dimethyl ester
    U410 59669-26-0 Thiodicarb
    U411 114-26-1 Phenol, 2-(1-methylethoxy)-, methylcarbamate
    U411 114-26-1 Propoxur
    See F027 93-76-5 Acetic acid, (2,4,5-trichlorophenoxy)-
    See F027 87-86-5 Pentachlorophenol
    See F027 87-86-5 Phenol, pentachloro-
    See F027 58-90-2 Phenol, 2,3,4,6-tetrachloro-
    See F027 95-95-4 Phenol, 2,4,5-trichloro-
    See F027 88-06-2 Phenol, 2,4,6-trichloro-
    See F027 93-72-1 Propanoic acid, 2-(2,4,5-trichlorophenoxy)-
    See F027 93-72-1 Silvex (2,4,5-TP)
    See F027 93-76-5 2,4,5-T
    See F027 58-90-2 2,3,4,6-Tetrachlorophenol
    See F027 95-95-4 2,4,5-Trichlorophenol
    See F027 88-06-2 2,4,6-Trichlorophenol

    **For the convenience of the regulated community, the primary hazardous properties of these materials have been indicated by the letters T (Toxicity), R (Reactivity), I (Ignitability) and C (Corrosivity). For wastes on the P list, absence of a letter indicates that the compound only is listed for acute toxicity. For wastes on the U list, absence of a letter indicates that the compound is only listed for toxicity.]

    1CAS Number given for parent compound only.

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    Characteristic Wastes

    A hazardous waste characteristic is a property which, when present in a waste, indicates that the waste poses a sufficient threat to merit regulation as hazardous. EPA established four hazardous waste characteristics: ignitability, corrosivity, reactivity and toxicity. 

    Ignitability

    Wastes that are hazardous due to the ignitability characteristic include liquids with flash points below 60 °C, non-liquids that cause fire through specific conditions, ignitable compressed gases and oxidizers. EPA assigned D001 as the waste code for ignitable hazardous wastes.

    Test methods for ignitability include the Pensky-Martens Closed-Cup Method for Determining Ignitability (SW-846 Test Method 1010A), the Setaflash Closed-Cup Method for Determining Ignitability (SW-846 Test Method 1020B) and the Ignitability of Solids (SW-846 Test Method 1030). To learn more about the ignitability characteristic see:

    Corrosivity

    Wastes that are hazardous due to the corrosivity characteristic include aqueous wastes with a pH of less than or equal to 2, a pH greater than or equal to 12.5 or based on the liquids ability to corrode steel. EPA assigned D002 as the waste code for i hazardous wastes.

    The test method to determine corrosivity towards steel is Corrosivity Towards Steel (SW-846 Test Method 1110A). To learn more about the corrosivity characteristic see:

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    Reactivity

    Wastes that are hazardous due to the reactivity characteristic may be unstable under normal conditions, may react with water, may give off toxic gases and may be capable of detonation or explosion under normal conditions or when heated. EPA assigned D003 as the waste code for reactive hazardous wastes.

    There are no test methods for reactivity. To learn more about this characteristic see:

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    Toxicity

    Wastes that are hazardous due to the toxicity characteristic are harmful when ingested or absorbed. Toxic wastes present a concern as they may be able to leach from waste and pollute groundwater. The toxicity of a waste is determined by the Toxicity Characteristic Leaching Procedure (TCLP) (SW-846 Test Method 1311). EPA assigned wastes codes D004 through D043 that correspond to a contaminant and its associated TCLP concentration.

    To learn more about the toxicity characteristic and regulatory levels for the TCLP test see 40 CFR section 261.24.

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    Mixed Radiological and Hazardous Waste

    Mixed wastes are hazardous wastes which also contain radioactive material. Mixed waste is regulated under the RCRA and the Atomic Energy Act. The hazardous component of the mixed waste is regulated by EPA under RCRA. The radiological component of the mixed waste is regulated by the Department of Energy (DOE) or the Nuclear Regulatory Commission (NRC). The NRC typically regulates waste from commercial and non-DOE facilities while the DOE regulates waste from DOE facilities.

    EPA’s Mixed Waste Rule provides increased flexibility to generators and facilities that manage low-level mixed waste (LLMW) and naturally occurring and/or accelerator-produced radioactive material (NARM) containing hazardous waste by exempting these wastes from RCRA storage and treatment requirements. The exemption is conditional upon the waste is generated under a single NRC license, of which the waste meets the specified conditions and that the waste is stored and treated in a tank or container. 

    More information about the EPA Mixed Waste Rule can be found in the following final rule, final rule fact sheet and proposed rules:

    Additional supporting documents can be found on regulations.gov in the docket for this rule.

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    Additional Resources

    Step 1: Is the material a solid waste? Step 2: Is the waste excluded from the definition of solid waste or hazardous waste? Step 3: Is the wasted listed or characteristic hazardous waste? Step 4 Is the waste delisted?