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.

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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

2-METHYLPYRIDINE

ICSC 0801 · CAS 109-06-8

Formula: C6H7N/C5H4N(CH3)

2-Picoline; alpha-Picoline; o-Picoline

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

2-N-DIBUTYLAMINOETHANOL

ICSC 1418 · CAS 102-81-8

Formula: C10H23NO/(C4H9)2NCH2CH2OH

2-Di-N-butylaminoethyl alcohol; N,N-Dibutyl-N-(2-hydroxyethyl)amine; N,N-Dibutylethanolamine

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

2-NAPHTHOL

ICSC 0719 · CAS 135-19-3

Formula: C10H8O

beta-Naphthol; 2-Hydroxynaphthalene; 2-Naphthalenol; Isonaphthol

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

2-NAPHTHYLAMINE

ICSC 0610 · CAS 91-59-8

Formula: C10H9N

beta-Naphthylamine; 2-Aminonaphthalene

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

2-NITRO-p-PHENYLENEDIAMINE

ICSC 1542 · CAS 5307-14-2

Formula: C6H7N3O2/C6H3(NH2)2NO2

2-Nitro-1,4-benzenediamine; 1,4-Diamino-2-nitrobenzene; 2-Nitro-4-aminoaniline

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

2-NITROANILINE

ICSC 0306 · CAS 88-74-4

Formula: C6H6N2O2

o-Nitroaniline; 1-Amino-2-nitrobenzene; C.I. 37025

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

2-NITROANISOLE

ICSC 1520 · CAS 91-23-6

Formula: NO2C6H4OCH3/C7H7NO3

Benzene, 1-methoxy-2-nitro-; 1-Methoxy-2-nitrobenzene; o-Nitrophenyl methyl ether; o-Nitroanisole

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

2-NITRONAPHTHALENE

ICSC 1504 · CAS 581-89-5

Formula: C10H7NO2

beta-Nitronaphthalene

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

2-NITROPHENOL

ICSC 0523 · CAS 88-75-5

Formula: C6H5NO3

o-Nitrophenol; 2-Hydroxynitrobenzene; o-Hydroxynitrobenzene

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

2-NITROPROPANE

ICSC 0187 · CAS 79-46-9

Formula: C3H7NO2/CH3CHNO2CH3

Isonitropropane; Dimethylnitromethane; sec-Nitropropane; 2-NP

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

2-OCTANOL

ICSC 1170 · CAS 123-96-6

Formula: CH3(CH2)5CH(OH)CH3/C8H18O

Capryl alcohol; 1-Methyl-1-heptanol; 2-Hydroxy-n-octane; Hexylmethylcarbinol

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

2-PENTANOL (RACEMIC MIXTURE)

ICSC 1428 · CAS 6032-29-7

Formula: C5H12O/CH3(CH2)2CHOHCH3

1-Methyl-1-butanol; sec-n-Amylalcohol; Methylpropylcarbinol; 3-Methyl-2-butanol; Pentan-2-ol

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

2-PROPYLENEGLYCOL1-ETHYL ETHER ACETATE

ICSC 1574 · CAS 54839-24-6

Formula: C7H14O3/C2H5OCH2CH(CH3)OCOCH3

1-Ethoxy-2-propanol acetate; 2-Ethoxy-1-methylethyl acetate; 1-Ethoxy-2-acetoxypropanol; 1-Ethoxy-2-propyl acetate; 2PG1EEA

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

2-TERT-BUTYLPHENOL

ICSC 1549 · CAS 88-18-6

Formula: C10H14O/(CH3)3CC6H4OH

o-tert-Butylphenol; 2-(1,1-Dimethylethyl)phenol; 2-tert-Butyl-1-hydroxybenzene

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

2-VINYL TOLUENE

ICSC 0733 · CAS 611-15-4

Formula: CH3C6H4CH=CH2/C9H10

o-Methyl styrene; 1-Ethenyl-2-methylbenzene; o-Vinyl toluene

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

2-VINYLPYRIDINE

ICSC 1232 · CAS 100-69-6

Formula: C7H7N/H2C=CHC5H4N

2-Ethenylpyridine; alpha-Vinylpyridine

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

2,2-DICHLORO-1,1,1-TRIFLUOROETHANE

ICSC 1343 · CAS 306-83-2

Formula: C2HCl2F3/CHCl2CF3

HCFC 123

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

2,2-DICHLOROACETYL CHLORIDE

ICSC 0869 · CAS 79-36-7

Formula: C2HCl3O/Cl2CHCOCl

Dichloroacetyl 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

2,2-DICHLOROPROPIONIC ACID

ICSC 1509 · CAS 75-99-0

Formula: C3H4Cl2O2

Dalapon; alpha,alpha-Dichloropropionic acid

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

2,2-DIMETHYLPROPANE

ICSC 1773 · CAS 463-82-1

Formula: C5H12

Tetramethylmethane; tert-Pentane; Neopentane; 1,1,1-Trimethylethane

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

2,2,4-TRIMETHYLPENTANE

ICSC 0496 · CAS 540-84-1

Formula: CH3C(CH3)2CH2CH(CH3)2/C8H18

Isobutyltrimethylmethane; Isooctane

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

2,2'-DIMETHYL-4,4'-METHYLENEBIS(CYCLOHEXYLAMINE)

ICSC 1464 · CAS 6864-37-5

Formula: C15H30N2

3,3'-Dimethyl-4,4'-diaminodicyclohexylmethane; 4,4'-Diamino-3,3'-dimethyldicyclohexylmethane; 4,4'-Methylenebis-(2-methylcyclohexanamine)

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

2,2'-DIPYRIDYL

ICSC 0093 · CAS 366-18-7

Formula: C10H8N2

2,2'-Bipyridine; alpha,alpha'-Bipyridyl; 2,2'-Bipyridyl; 2-(2-Pyridyl)pyridine

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

2,2'-DITHIODIBENZOIC ACID

ICSC 1623 · CAS 119-80-2

Formula: C14H10O4S2/COOH-C6H4-S-S-C6H4-COOH

2, 2'-Dithiobis[benzoic acid]; Benzoic acid, 2,2'-dithiobis-; Bis(2-carboxyphenyl) disulfide; Diphenyldisulfide-2,2'-dicarboxylic acid; 2,2'-Dithiosalicylic acid

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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