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

1,2-DICHLOROETHANE

ICSC 0250 · CAS 107-06-2

Formula: ClCH2CH2Cl/C2H4Cl2

Ethylene dichloride; 1,2-Ethylene dichloride; Ethane 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

1,2-DICHLOROETHYLENE

ICSC 0436 · CAS 540-59-0

Formula: C2H2Cl2/ClCH=CHCl

Acetylene dichloride; symmetrical Dichloroethylene; 1,2-Dichloroethene

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

1,2-DICHLOROPROPANE

ICSC 0441 · CAS 78-87-5

Formula: C3H6Cl2-CH3CHClCH2Cl

Propylene 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

1,2-DIMETHYLHYDRAZINE

ICSC 1662 · CAS 540-73-8

Formula: C2H8N2/H3CNHNHCH3

Symmetrical dimethylhydrazine; N,N'-Dimethylhydrazine; SDMH

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

1,2-DINITROBENZENE

ICSC 0460 · CAS 528-29-0

Formula: C6H4(NO2)2/C6H4N2O4

o-Dinitrobenzene; 1,2-DNB; 1,2-Dinitrobenzol

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

1,2-DIPHENYLHYDRAZINE

ICSC 0263 · CAS 122-66-7

Formula: C12H12N2/C6H5NHNHC6H5

Hydrazobenzene; Diphenylhydrazine; N,N'-Bianiline

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

1,2,3-TRICHLOROBENZENE

ICSC 1222 · CAS 87-61-6

Formula: C6H3Cl3

vic-Trichlorobenzene; 1,2,6-Trichlorobenzene

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

1,2,3-TRICHLOROPROPANE

ICSC 0683 · CAS 96-18-4

Formula: C3H5Cl3/CH2ClCHClCH2Cl

Glycerol trichlorohydrin; Allyl 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

1,2,3-TRIMETHYLBENZENE

ICSC 1362 · CAS 526-73-8

Formula: C9H12

Hemimellitene

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

1,2,3,4-TETRAHYDRONAPHTHALENE

ICSC 1527 · CAS 119-64-2

Formula: C10H12

Tetralin; Tetrahydronaphthalene; Naphthalene, 1,2,3,4-tetrahydro-

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

1,2,4-TRIAZOLE

ICSC 0682 · CAS 288-88-0

Formula: C2H3N3

s-Triazole; Pyrrodiazole; 1H-1,2,4-Triazole

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

1,2,4-TRICHLOROBENZENE

ICSC 1049 · CAS 120-82-1

Formula: C6H3Cl3

1,2,4-Trichlorobenzol; unsym-Trichlorobenzene

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

1,2,4-TRIMETHYLBENZENE

ICSC 1433 · CAS 95-63-6

Formula: C9H12

Pseudocumene

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

1,2,4,5-TETRACHLOROBENZENE

ICSC 0676 · CAS 95-94-3

Formula: C6H2Cl4

Benzene tetrachloride; s-Tetrachlorobenzene

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

1,3-BIS(AMINOMETHYL)BENZENE

ICSC 1462 · CAS 1477-55-0

Formula: C8H12N2/C6H4(CH2NH2)2

m-Xylene alpha, alpha'-diamine; 1,3-Benzenedimethanamine; 1,3-bis-Aminomethylbenzene; m-Phenylenebis(methylamine); m-Xylylenediamine

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

1,3-BUTADIENE

ICSC 0017 · CAS 106-99-0

Formula: C4H6/CH2=(CH)2=CH2

Divinyl; Vinylethylene; Biethylene; Erythrene; Pyrrolylene; Buta-1,3-diene

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

1,3-BUTANEDIOL

ICSC 1182 · CAS 107-88-0

Formula: C4H10O2/CH3CHOHCH2CH2OH

1,3-Butylene glycol; 1,3-Dihydroxybutane; Methyltrimethylene 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

1,3-CYCLOHEXADIENE

ICSC 0762 · CAS 592-57-4

Formula: C6H8

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

1,3-DIAMINOBUTANE

ICSC 1078 · CAS 590-88-5

Formula: C4H12N2

1-Methyltrimethylene diamine; Butane-1,3-diamine

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

1,3-DICHLORO-2-BUTENE

ICSC 1761 · CAS 926-57-8

Formula: C4H6Cl2

2-butene,1,3-dichloro-; 1,3-dichlorobutylene; 1,3-DCB

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

1,3-DICHLORO-2-NITROBENZENE

ICSC 0253 · CAS 601-88-7

Formula: Cl2C6H3NO2

2,6-Dichloronitrobenzene; 1,3-Dichloro-2-nitro-benzene; 2,6-Dichloro-1-nitrobenzene

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

1,3-DICHLORO-2-PROPANOL

ICSC 1711 · CAS 96-23-1

Formula: C3H6Cl2O/CH2ClCHOHCH2Cl

sym-Dichloroisopropyl alcohol; alpha-Dichlorohydrin; sym-Glycerol dichlorohydrin; 1,3-Dichloro-propan-2-ol; 1,3-Dichloro-propanol-2

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

1,3-DICHLORO-4-NITROBENZENE

ICSC 0252 · CAS 611-06-3

Formula: C6H3Cl2NO2

2,4-Dichloro-1-nitrobenzene; 2,4-Dichloronitrobenzene; 4-Nitro-1,3-dichlorobenzene

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

1,3-DICHLORO-5-NITROBENZENE

ICSC 0255 · CAS 618-62-2

Formula: Cl2C6H3NO2

3,5-Dichloronitrobenzene

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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