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

About this service

Get a quote

Complete the form and we will get back to you.

Tell us briefly what you need help with.

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

Explore the library

1,699 matching records · Clear search

Chemical reference

COPPER(II) ARSENITE

ICSC 1211 · CAS 10290-12-7

Formula: CuAsHO3

Copper orthoarsenite; Acid copper arsenite; Arsenious acid, copper (II) salt; Cupric arsenite

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

Get a quote

Chemical reference

COPPER(II) SULFATE, PENTAHYDRATE

ICSC 1416 · CAS 7758-99-8

Formula: CuSO4.5H2O

copper sulfate pentahydrate; Sulfuric acid, copper(2+) salt, pentahydrate

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

Get a quote

Chemical reference

COUMAPHOS

ICSC 0422 · CAS 56-72-4

Formula: C14H16ClO5PS

O-3-Chloro-4-methyl-2-oxo-2H-chromen-7-yl O,O-diethyl phosphorothioate; Phosphorothioic acid O-(3-chloro-4-methyl-2-oxo-2H-1-benzopyran-7-yl) O,O-diethyl ester; O,O-Diethyl O-(3-chloro-4-methyl-7-coumarinyl)phosphorothioate; O,O-Diethyl 3-chloro-4-methyl-7-umbelliferone thiophosphate

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

Get a quote

Chemical reference

COUMARIN

ICSC 1105 · CAS 91-64-5

Formula: C9H6O2

1,2-Benzopyrone; 2H-1-Benzopyran-2-one

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

Get a quote

Chemical reference

CREOSOTE

ICSC 0572 · CAS 8001-58-9

Wash oil; Creosote oil; Coal tar creosote

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

Get a quote

Chemical reference

CRISTOBALITE

ICSC 0809 · CAS 14464-46-1

Formula: SiO2

Crystalline silica, cristobalite; Crystalline silicon dioxide, cristobalite; Crystobalite

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

Get a quote

Chemical reference

CROCIDOLITE

ICSC 1314 · CAS 12001-28-4

Formula: Na2Fe++3Fe+++2Si8O22(OH)2

Riebeckite asbestos; Blue asbestos

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

Get a quote

Chemical reference

CROTONALDEHYDE

ICSC 0241 · CAS 4170-30-3

Formula: C4H6O/CH3CH=CHCHO

2-Butenal; beta-Methylacrolein; Methyl propenal; Propylene aldehyde

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

Get a quote

Chemical reference

CROTONIC ACID

ICSC 0423 · CAS 107-93-7

Formula: C4H6O2/CH3-CH=CH-COOH

(2E)-But-2-enoic acid; trans-2-Butenoic acid; trans-Crotonic 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

Get a quote

Chemical reference

CRYOLITE

ICSC 1565 · CAS 15096-52-3

Formula: Na3AlF6

Aluminium trisodium fluoride; Sodium fluoaluminate; Sodium aluminium fluoride; Sodium hexafluoroaluminate

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

Get a quote

Chemical reference

CUMENE

ICSC 0170 · CAS 98-82-8

Formula: C9H12/C6H5CH(CH3)2

(1-Methylethyl)benzene; 2-Phenylpropane; Isopropylbenzene

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

Get a quote

Chemical reference

CUMENE HYDROPEROXIDE

ICSC 0761 · CAS 80-15-9

Formula: C9H12O2/C6H5C(CH3)2OOH

alpha,alpha-Dimethylbenzyl hydroperoxide; Hydroperoxide, 1-methyl-1-phenylethyl; Cumyl hydroperoxide

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

Get a quote

Chemical reference

CYANAMIDE

ICSC 0424 · CAS 420-04-2

Formula: CH2N2/H2NCN

Carbimide; Cyanogenamide; Amidocyanogen; Carbamonitrile; Hydrogen cyanamide; Carbodiimide

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

Get a quote

Chemical reference

CYANAZINE

ICSC 0391 · CAS 21725-46-2

Formula: C9H13ClN6

2-Chloro-4-(1-cyano-1-methylethylamino)-6-ethylamino-1,3,5-triazine

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

Get a quote

Chemical reference

CYANOGEN

ICSC 1390 · CAS 460-19-5

Formula: C2N2

Dicyanogen; Ethanedinitrile; Oxalonitrile

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

Get a quote

Chemical reference

CYANOGEN BROMIDE

ICSC 0136 · CAS 506-68-3

Formula: BrCN

Bromine cyanide; Cyanobromide; Bromocyan

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

Get a quote

Chemical reference

CYANOGEN CHLORIDE

ICSC 1053 · CAS 506-77-4

Formula: ClCN

Chlorine cyanide; Chlorocyanide; Chlorocyanogen

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

Get a quote

Chemical reference

CYANURIC ACID

ICSC 1313 · CAS 108-80-5

Formula: C3H3N3O3/C3N3(OH)3

Isocyanuric acid; 1,3,5-Triazine-2,4,6(1H,3H,5H) - trione; sym-Triazine-2,4,6-triol

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

Get a quote

Chemical reference

CYANURIC CHLORIDE

ICSC 1231 · CAS 108-77-0

Formula: C3Cl3N3

2,4,6-Trichloro-1,3,5-triazine; Chlorotriazine; Trichlorocyanidine; Tricyanogen chloride; Cyanuric acid trichloride; 2,4,6-Trichloro-s-triazine

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

Get a quote

Chemical reference

CYCLOHEXANE

ICSC 0242 · CAS 110-82-7

Formula: C6H12

Hexahydrobenzene; Hexamethylene; Hexanaphthene

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

Get a quote

Chemical reference

CYCLOHEXANEDICARBOXYLIC ACID ANHYDRIDE

ICSC 1643 · CAS 85-42-7

Formula: C8H10O3

Hexahydrophthalic anhydride; Cyclohexane-1,2-dicarboxylic acid anhydride; 1,3-Isobenzofurandione, hexahydro-; Hexahydro-isobenzofuran-1,3-dione; HHPA

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

Get a quote

Chemical reference

CYCLOHEXANETHIOL

ICSC 0032 · CAS 1569-69-3

Formula: C6H11SH

Cyclohexyl mercaptan

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

Get a quote

Chemical reference

CYCLOHEXANOL

ICSC 0243 · CAS 108-93-0

Formula: C6H11OH

Cyclohexyl alcohol; Hexahydrophenol; Hexalin

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

Get a quote

Chemical reference

CYCLOHEXANONE

ICSC 0425 · CAS 108-94-1

Formula: C6H10O

Ketohexamethylene; Pimelic ketone; Cyclohexyl ketone

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

Get a quote

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.

Contact us

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.

Get a quote

Chemical Waste Disposal

Services

Request a quote

Menu

Get a quote