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

TETRAMETHYL LEAD

ICSC 0200 · CAS 75-74-1

Formula: Pb(CH3)4/C4H12Pb

Tetramethyl plumbane

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

TETRAMETHYL SUCCINONITRILE

ICSC 1121 · CAS 3333-52-6

Formula: C8H12N2/(CH3)2C(CN)C(CN)(CH3)2

Tetramethylsuccinic acid dinitrile; Tetramethylbutanedinitrile; TMSN

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

TETRAMETHYLAMMONIUM CHLORIDE

ICSC 1099 · CAS 75-57-0

Formula: C4H12ClN/(CH3)4NCl

Ammonium-, tetramethyl-, chloride; N, N, N-Trimethylmethanamium chloride; Tetramine chloride; N, N, N-Trimethylmethanaminium 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

TETRANITROMETHANE

ICSC 1468 · CAS 509-14-8

Formula: CN4O8/C(NO2)4

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

TETRAPOTASSIUM PYROPHOSPHATE

ICSC 0983 · CAS 7320-34-5

Formula: K4O7P2

Potassium pyrophosphate; Pyrophosphoric acid, tetrapotassium salt

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

TETRASODIUM ETHYLENEDIAMINETETRAACETATE

ICSC 1688 · CAS 64-02-8

Formula: C10H12N2O8Na4/((NaOOCCH2)2NCH2)2

Ethylenediaminetetraacetic acid tetrasodium salt; Acetic acid, (ethylenedinitrilo)tetra-, tetrasodium salt; N,N'-Ethylenediaminediacetic acid tetrasodium salt; EDTA Tetrasodium

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

TETRASODIUM PYROPHOSPHATE

ICSC 1140 · CAS 7722-88-5

Formula: Na4O7P2

Sodium pyrophosphate; Pyrophosphoric acid, tetrasodium salt

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

TETRYL

ICSC 0959 · CAS 479-45-8

Formula: C7H5N5O8/(NO2)3C6H2N(CH3)NO2

N-Methyl-N,2,4,6-tetranitroaniline; Picrylnitromethylamine; Nitramine

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

TEXANOL

ICSC 0629 · CAS 25265-77-4

Formula: C12H24O3

2,2,4-Trimethyl-1,3-pentanediol monoisobutyrate; Propionic acid, 2-methyl-, monoester with 2,2,4-trimethyl-1,3-pentanediol; Isobutyric acid ester with 2,2,4-trimethyl-1,3-pentanediol

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

THALLIUM

ICSC 0077 · CAS 7440-28-0

Formula: TlAtomicmass:204.4

Ramor; Thallium (metal)

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

THALLIUM CARBONATE

ICSC 1221 · CAS 6533-73-9

Formula: Tl2CO3

Carbonic acid, dithallium(1+) salt; Dithallium carbonate; Thallous carbonate

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

THALLIUM SULFATE

ICSC 0336 · CAS 7446-18-6

Formula: Tl2SO4

Thallium (I) sulfate; Dithallium sulfate; Thallous sulfate

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

THEOPHYLLINE

ICSC 0678 · CAS 58-55-9

Formula: C7H8N4O2

3,7-Dihydro-1,3-dimethyl-1H-purine-2,6-dione; 1,3-Dimethylxanthine

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

THIOACETAMIDE

ICSC 0579 · CAS 62-55-5

Formula: CH3CSNH2/C2H5NS

Acetothioamide; Ethanethioamide; Acetamide, thio-

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

THIOCYANIC ACID

ICSC 1671 · CAS 463-56-9

Formula: HSCN

Hydrogen rhodanide

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

THIODIGLYCOL

ICSC 1601 · CAS 111-48-8

Formula: C4H10O2S

2,2`-Thiodiethanol; Di(2-hydroxyethyl) sulfide; Diethanolsulfide; Thiodiethylene glycol

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

THIOMETON

ICSC 0580 · CAS 640-15-3

Formula: C6H15O2PS3/(CH3O)2P(S)SCH2CH2SCH2CH3

S-2-Ethylthioethyl O,O-dimethyl phosphorodithioate; Phosphorodithioic acid, S-(2-(ethylthio)ethyl)O,O-dimethyl ester; Dithiomethon

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

THIONYL CHLORIDE

ICSC 1409 · CAS 7719-09-7

Formula: SOCl2

Sulfurous oxychloride; Sulfurous dichloride; Sulfinyl chloride; Sulfur chloride oxide (Cl2SO); Thionyl dichloride

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

THIOPHENE

ICSC 1190 · CAS 110-02-1

Formula: C4H4S/SCH=CHCH=CH

Divinylene sulphide; Thiacyclopentadiene; Thiofuran

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

THIOPHOSPHORYL CHLORIDE

ICSC 0581 · CAS 3982-91-0

Formula: Cl3PS

Phosphorothionic trichloride; Trichlorophosphine sulfide; Phosphorous sulfochloride; Phosphorothioic trichloride

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

THIOUREA

ICSC 0680 · CAS 62-56-6

Formula: CH4N2S/H2NCSNH2

Thiocarbamide; Isothiourea

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

THIRAM

ICSC 0757 · CAS 137-26-8

Formula: C6H12N2S4/(CH3)2N-CS-S-S-CS-N(CH3)2

Tetramethylthiuram disulfide; Bis (dimethylthiocarbamoyl) disulfide; TMTD; Tetramethylthioperoxydicarbonic diamide (((H2N)C(S))2S2)

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

THORIUM

ICSC 0337 · CAS 7440-29-1

Formula: ThAtomicmass:232.0

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

TIN

ICSC 1535 · CAS 7440-31-5

Formula: SnAtomicmass:118.7

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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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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