Chemical identity and waste assessment

Chemical waste disposal library

A source-linked index of chemical identities, with guidance on the information needed to classify and route chemical waste.

Technical informationSources and further reading

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4,476 reference records · 8 detailed guides

This index brings together chemical identities from the ILO / WHO International Chemical Safety Cards and the HSE GB mandatory classification and labelling list. Use the names, identifiers and available formulae to compare a product label, safety data sheet or waste inventory with the source record. Separate source entries may describe different forms or concentrations of the same substance. A match confirms only the source identity; it does not establish the composition of the waste, collection availability or a suitable treatment route. HSE identity information contains Crown copyright material reproduced under the Open Government Licence v3.0.

The detailed guides explain properties and waste-assessment points for particular chemicals. A chemical name or CAS number does not, on its own, establish a List of Waste code, packaging requirement, transport classification or receiving-facility acceptance.

Using chemical identity in a waste assessment

Identity is one part of the waste description. Concentration, process history, contamination and container condition can change the assessment even when the original product is known.

  • Identity: product name, CAS or EC number and the supplier safety data sheet.
  • Waste status: unused stock, spent process material, mixture or contaminated packaging.
  • Quantity and condition: amount, concentration, container sizes and container condition.
  • Process history: how the waste arose, including known additions, contaminants or any available analysis.
Source references and waste guidance

These sources cover chemical identity, safety data sheets and waste classification. Each has its own scope; none of them confirms that a particular waste load will be accepted by a receiving facility.

Chemical waste guides

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1,699 matching records · Clear search

Chemical reference

EPN

ICSC 0753 · CAS 2104-64-5

Formula: C14H14NO4PS

Phosphonothioic acid, phenyl-, O-ethyl O-(4-nitrophenyl) ester; O-Ethyl O-4-nitrophenyl phenyl phosphonothioate

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

epsilon-CAPROLACTONE

ICSC 1741 · CAS 502-44-3

Formula: C6H10O2

ε-Caprolactone; 6-Hydroxycaproic acid lactone; 2-Oxepanone; 1,6-Hexanolide

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

EPTAC (70-75 % aqueous solution)

ICSC 1668 · CAS 3033-77-0

Formula: C6H14NOCl

2,3-Epoxypropyltrimethylammonium chloride; N,N,N-Trimethyloxiranemethanaminium chloride; Glycidyltrimethylammonium chloride

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

EPTC

ICSC 0469 · CAS 759-94-4

Formula: C9H19NOS/CH3CH2SC(O)N(CH2CH2CH3)2

S-Ethyl dipropylthiocarbamate; Carbamothioic acid, dipropyl-, S-ethyl ester; S-Ethyl dipropylcarbamothioate; S-Ethyl-N,N-dipropylthiocarbamate; EPTAM

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

ESFENVALERATE

ICSC 1516 · CAS 66230-04-4

Formula: C25H22ClNO3

(S)-alpha-Cyano-3-phenoxybenzyl-(S)-2-(4-chlorophenyl)-3-methylbutyrate; (S)-(R*,R*)-Cyano (3-phenoxyphenyl) methyl-4-chloro-alpha-(1-methylethyl) benzene acetate; (S-(R*,R*))-Benzeneacetic acid, 4-chloro-alpha-(1-methylethyl)-, cyano (3-phenoxyphenyl)methyl ester; (S)-alpha-Cyano-3-phenoxybenzyl-(S)-2-(4-chlorophenyl)isovalerate; S-Fenvalerate

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

ETHANE

ICSC 0266 · CAS 74-84-0

Formula: C2H6/CH3CH3

Reference entry from an ILO / WHO International Chemical Safety Card. The card defines the chemical identity and the scope of its safety information. Check the supplier safety data sheet for the actual product or formulation.

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

ETHANETHIOL

ICSC 0470 · CAS 75-08-1

Formula: C2H5SH

Ethyl mercaptan; Thioethyl alcohol

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

ETHANOL (ANHYDROUS)

ICSC 0044 · CAS 64-17-5

Formula: CH3CH2OH/C2H6O

Ethyl alcohol; Absolute ethanol; Methyl carbinol; Grain alcohol

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

ETHANOLAMINE

ICSC 0152 · CAS 141-43-5

Formula: C2H7NO/H2NCH2CH2OH

2-Hydroxyethylamine; 2-Aminoethanol

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

ETHIDIUM BROMIDE

ICSC 1676 · CAS 1239-45-8

Formula: C21H20N3.Br

Phenanthridinium, 3,8-diamino-5-ethyl-6-phenyl-, bromide; 2,7-Diamino-10-ethyl-9-phenylphenanthridinium bromide; Homidium bromide

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

Ethiofencarb

ICSC 1754 · CAS 29973-13-5

Formula: C11H15NO2S

2-(Ethylthiomethyl)phenyl N-methylcarbamate; alpha-(Ethylthio)-o-tolyl methylcarbamate; 2-[(Ethylthio)methyl]phenyl methylcarbamate

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

ETHION

ICSC 0888 · CAS 563-12-2

Formula: C9H22O4P2S4

O,O,O',O'-Tetraethyl S,S'-methylene-bis-phosphorodithioate; Diethion

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

ETHOPROPHOS

ICSC 1660 · CAS 13194-48-4

Formula: C8H19O2PS2

O-ethyl-S,S-dipropyl phosphorodithioate; Phosphorodithioic acid, O-ethyl S,S-dipropyl ester; Ethoprop

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

ETHYL 2-CYANOACRYLATE

ICSC 1358 · CAS 7085-85-0

Formula: C6H7NO2

2-Cyano-2-propenoic acid, ethyl ester; 2-Cyanoacrylic acid, ethyl ester; Ethyl alpha-cyanoacrylate

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

ETHYL ACETOACETATE

ICSC 1024 · CAS 141-97-9

Formula: C6H10O3/CH3COCH2COOC2H5

Acetoacetic acid ethyl ester; Ethyl acetylacetate; 3-Oxobutanoic acid ethyl ester; 1-Ethoxybutane-1,3-dione

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

ETHYL ACRYLATE

ICSC 0267 · CAS 140-88-5

Formula: CH2CHCOOC2H5/C5H8O2

2-Propenoic acid, ethyl ester; Acrylic acid ethyl ester; Ethyl propenoate

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

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Chemical reference

ETHYL CARBAMATE

ICSC 0314 · CAS 51-79-6

Formula: C3H7NO2/NH2COOC2H5

Carbamic acid ethyl ester; Ethyl urethane; Urethane

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

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Chemical reference

ETHYL CHLOROACETATE

ICSC 1081 · CAS 105-39-5

Formula: C4H7ClO2/ClCH2CO2C2H5

Chloroacetic acid, ethyl ester; Ethyl monochloroacetate; Ethyl alpha-chloroacetate; Ethyl-2-monochloroacetate

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

ETHYL CHLOROFORMATE

ICSC 1025 · CAS 541-41-3

Formula: C3H5ClO2/ClCOOC2H5

Ethyl chlorocarbonate; Chloroformic acid ethyl ester; Carbonochloridic acid ethyl ester; Ethoxycarbonyl chloride

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

ETHYL FORMATE

ICSC 0623 · CAS 109-94-4

Formula: C3H6O2/HCOOC2H5

Formic acid, ethyl ester; Formic ether

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

ETHYL IODIDE

ICSC 0479 · CAS 75-03-6

Formula: C2H5I/CH3CH2I

Iodoethane; Ethane iodide; Monoiodoethane

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

ETHYL METHACRYLATE

ICSC 0272 · CAS 97-63-2

Formula: CH2=C(CH3)COO(C2H5)/C6H10O2

Ethyl-2-methyl-2-propenoate; Ethyl-2-methylacrylate

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Chemical reference

ETHYL n-BUTYL KETONE

ICSC 0889 · CAS 106-35-4

Formula: C7H14O/CH3(CH2)3COCH2CH3

3-Heptanone; Butyl ethyl ketone

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

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Chemical reference

ETHYL TERTIARY BUTYL ETHER

ICSC 1706 · CAS 637-92-3

Formula: C6H14O

ETBE; 2-Ethoxy-2-methylpropane; Ethyl 1,1-dimethylethyl ether; Ethyl tert-butyl ether

ILO / WHO chemical safety card

Identity reference only. The source helps identify the substance; it does not establish the composition or classification of a waste stream, or whether it will be accepted for treatment.

Reference notes and technical facts
  • Check the product label and supplier safety data sheet for the substance identity, concentration and formulation.
  • Waste assessment also depends on quantity, container condition, process history, mixing and contamination.

ILO / WHO chemical safety card

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Published by Chemical Waste Disposal. Sources checked 12 September 2026. Editorial policy.

If you spot an error in this library, please contact us so we can check the entry against its source.

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The appropriate route for chemical waste depends on the material, concentration, condition, quantity and any contamination. The reference information in this library helps with identification, but it does not confirm that a particular waste will be accepted.

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