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

PYRIPROXYFEN

ICSC 1269 · CAS 95737-68-1

Formula: C20H19NO3

2-(1-Methyl-2-(4-phenoxy)ethoxy)pyridine; 4-Phenoxyphenyl (RS)-2-(2-pyridyloxy)propyl 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

PYROGALLIC ACID

ICSC 0770 · CAS 87-66-1

Formula: C6H6O3/C6H3(OH)3

1,2,3-Benzenetriol; 1,2,3-Trihydroxybenzene; Pyrogallol

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

PYROMELLITIC DIANHYDRIDE

ICSC 1375 · CAS 89-32-7

Formula: C10H2O6/C6H2(C2O3)2

1,2,4,5-Benzenetetracarboxylic 1,2:4,5-dianhydride; 1,2,4,5-Benzenetetracarboxylic anhydride; 1H,3H-Benzo(1,2-c;4,5-c')difuran-1,3,5,7-tetrone; PMDA

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

PYRROLIDINE

ICSC 1315 · CAS 123-75-1

Formula: C4H9N

Azacyclopentane; Pyrrole, 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

PYRROLIDONE

ICSC 0562 · CAS 616-45-5

Formula: C4H7NO

2-Pyrrolidinone; 2-Pyrrolidone; 2-Ketopyrrolidine; 2-Oxopyrrolidine

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

QUARTZ

ICSC 0808 · CAS 14808-60-7

Formula: SiO2

Crystalline silica, quartz; Crystalline silicon dioxide, quartz; Silicic anhydride

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

QUINOLINE

ICSC 0071 · CAS 91-22-5

Formula: C9H7N

1-Azanaphthalene; 1-Benzazene; Benzo(b)pyridine; Leucoline

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

QUINTOZENE

ICSC 0745 · CAS 82-68-8

Formula: C6Cl5NO2

Pentachloronitrobenzene; PCNB

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

RADON

ICSC 1322 · CAS 10043-92-2

Formula: RnAtomicmass:222

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

RESMETHRIN

ICSC 0324 · CAS 10453-86-8

Formula: C22H26O3

(5-Benzyl-3-furyl)methyl (1RS)-cis-trans-chrysanthemate; (5-(Phenylmethyl)-3-furanyl)methyl 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate

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

RESORCINOL

ICSC 1033 · CAS 108-46-3

Formula: C6H6O2

1,3-Dihydroxybenzene; 1,3-Benzenediol; 3-Hydroxyphenol; Resorcin

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

RESORCINOL DIGLYCIDYL ETHER

ICSC 0193 · CAS 101-90-6

Formula: C12H14O4

Diglycidyl resorcinol ether; m-bis(2,3-Epoxypropoxy)benzene; 1,3-Diglycidyloxybenzene

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

RHODAMINE WT

ICSC 0325 · CAS 37299-86-8

Formula: C29H29N2O5.Cl.2Na

Acid red 388

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

RHODIUM

ICSC 1247 · CAS 7440-16-6

Formula: RhAtomicmass:102.9

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

RHODIUM TRICHLORIDE, TRIHYDRATE

ICSC 0746 · CAS 13569-65-8

Formula: RhCl3*3H2O/Cl3Rh*3H2O

Rhodium chloride, trihydrate; Rhodium(III) chloride trihydrate

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

RIBOFLAVIN

ICSC 1454 · CAS 83-88-5

Formula: C17H20N4O6

Lactoflavine; Vitamin B2

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

ROCK WOOL

ICSC 0194

Stone wool

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

ROSIN

ICSC 0358 · CAS 8050-09-7

Colophony; Gum rosin

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

ROTENONE

ICSC 0944 · CAS 83-79-4

Formula: C23H22O6

Tubotoxine; Derris powder

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

S-BIOALLETHRIN

ICSC 0228 · CAS 28434-00-6

Formula: C19H26O3

(S)-3-Allyl-2-methyl-4-oxocyclopent-2-enyl (1R)-trans-chrysanthemate; 2-Methyl-4-oxo-3-(2-propenyl)-2-cyclopenten-1-yl 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate

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

SALICYLIC ACID

ICSC 0563 · CAS 69-72-7

Formula: C7H6O3/HOC6H4COOH

2-Hydroxybenzoic acid; o-Hydroxybenzoic 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

SEBACIC ACID

ICSC 1685 · CAS 111-20-6

Formula: C10H18O4/HOOC(CH2)8COOH

1,10-Decanedioic acid; 1,8-Octanedicarboxylic acid; Decanedioic 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

sec-AMYL ACETATE

ICSC 0219 · CAS 626-38-0

Formula: C7H14O2/CH3COOCH(CH3)C3H7

2-Pentyl acetate; Acetic acid, 2-pentyl ester; 1-Methylbutyl acetate

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

sec-BUTYL ACETATE

ICSC 0840 · CAS 105-46-4

Formula: C6H12O2/CH3COOCH(CH3)CH2CH3

1-Methylpropyl acetate; Acetic acid, 2-butyl ester

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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