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

p-tert-BUTYLTOLUENE

ICSC 1068 · CAS 98-51-1

Formula: C11H16/CH3C6H4C(CH3)3

1-Methyl-4-tert-butylbenzene; 4-tert-Butyltoluene; p-TBT

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

p-TOLUENESULFONAMIDE

ICSC 1557 · CAS 70-55-3

Formula: C7H9NO2S

4-Toluenesulfonamide; 4-Methylbenzenesulfonamide; p-Tosylamide

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

p-TOLUENESULFONIC ACID (max. 5% sulfuric acid)

ICSC 0773 · CAS 104-15-4

Formula: C7H8O3S/CH3C6H4SO3H

Toluene-4-sulfonic acid; 4-Methylbenzenesulfonic acid; p-Methylphenylsulfonic acid; Tosic 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

p-TOLUENESULFONYL CHLORIDE

ICSC 1762 · CAS 98-59-9

Formula: C7H7ClO2S

Tosyl chloride; 4-Toluenesulfonyl chloride; 4-Methylbenzenesulfonyl 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

p-XYLENE

ICSC 0086 · CAS 106-42-3

Formula: C6H4(CH3)2/C8H10

para-Xylene; 1,4-Dimethylbenzene; p-Xylol; paraxylene

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

PALMITIC ACID

ICSC 0530 · CAS 57-10-3

Formula: C16H32O2

Hexadecanoic acid; 1-Pentadecanecarboxylic acid; Cetylic 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

para-CRESIDINE

ICSC 1180 · CAS 120-71-8

Formula: C8H11NO/CH3OC6H3(CH3)NH2

2-Methoxy-5-methylaniline; 5-Methyl-ortho-anisidine; 3-Amino-para-cresol methyl ether; 4-Methoxy-meta-toluidine; 4-Methyl-2-aminoanisole

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

para-tert-BUTYLPHENOL

ICSC 0637 · CAS 98-54-4

Formula: C10H14O/HOC6H4C(CH3)3

4-(1,1-Dimethylethyl)phenol; 1-Hydroxy-4-tert-butylbenzene

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

para-TOLUIDINE

ICSC 0343 · CAS 106-49-0

Formula: C7H9N/C6H4CH3NH2

4-Aminotoluene; p-Methylaniline; 1-Amino-4-methylbenzene

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

PARACETAMOL

ICSC 1330 · CAS 103-90-2

Formula: C8H9NO2/HOC6H4NHCOCH3

Acetaminophen; 4'-Hydroxyacetanilide; p-Acetylaminophenol; N-(4-Hydroxyphenyl) acetamide

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

PARAFFIN WAX

ICSC 1457 · CAS 8002-74-2

Formula: CnH2n+2

Petroleum wax; Paraffin waxes and hydrocarbon waxes; (See Notes)

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

PARAFORMALDEHYDE

ICSC 0767 · CAS 30525-89-4

Polyoxymethylene; Formagene; Polymerised formaldehyde; Formaldehyde polymer; Paraform

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

PARALDEHYDE

ICSC 1042 · CAS 123-63-7

Formula: C6H12O3

p-Acetaldehyde; Paracetaldehyde; 2,4,6-Trimethyl-1,3,5-trioxane

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

PARAQUAT DICHLORIDE

ICSC 0005 · CAS 1910-42-5

Formula: C12H14Cl2N2/CH3(C5H4N)2CH3・2Cl

Paraquat; 1,1'-Dimethyl-4,4'-bipyridinium dichloride; Methyl viologen 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

PARATHION

ICSC 0006 · CAS 56-38-2

Formula: (C2H5O)2PSOC6H4NO2

O,O-Diethyl-O-(4-nitrophenyl)phosphorothioate; Phosphorothioic acid O,O-diethyl O-(4-nitrophenyl) ester; Ethyl parathion

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

PENTABORANE

ICSC 0819 · CAS 19624-22-7

Formula: B5H9

Pentaboron nonahydride; pentaborane(9); Nonahydropentaborane

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

PENTABROMODIPHENYL ETHER (Technical product)

ICSC 1612 · CAS 32534-81-9

Formula: C12H5Br5O

Diphenyl ether, pentabromo derivative; 1,1'-Oxybispentabromo benzene

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

PENTABROMOPHENOL

ICSC 1564 · CAS 608-71-9

Formula: C6Br5OH

2,3,4,5,6-Pentabromophenol; Pentabromofenol; Phenol, pentabromo-

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

PENTACHLOROBENZENE

ICSC 0531 · CAS 608-93-5

Formula: C6HCl5

1,2,3,4,5-Pentachlorobenzene

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

PENTACHLOROETHANE

ICSC 1394 · CAS 76-01-7

Formula: CHCl2CCl3

Ethane pentachloride; Pentalin

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

PENTACHLORONAPHTHALENE

ICSC 0935 · CAS 1321-64-8

Formula: C10H3Cl5

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

PENTACHLOROPHENOL

ICSC 0069 · CAS 87-86-5

Formula: C6Cl5OH

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

PENTACHLOROPHENOL, SODIUM SALT (Technical Grade)

ICSC 0532 · CAS 131-52-2

Formula: C6Cl5ONa

Sodium pentachlorophenate; Sodium pentachlorophenol; Sodium pentachlorophenolate; Sodium pentachlorophenoxide

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

PENTAERYTHRITOL

ICSC 1383 · CAS 115-77-5

Formula: C5H12O14/C(CH2OH)4

2,2-bis(Hydroxymethyl)-1,3-propanediol; Tetramethylolmethane; THME; PETP

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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