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

Solvents

Acetone waste disposal and recovery

ICSC 0087 · CAS 67-64-1

Formula: C3H6O/CH3-CO-CH3

Acetone waste may be unused stock, spent solvent or part of a formulated mixture. Composition and contamination determine whether solvent recovery is suitable.

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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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Solvents

Ethyl acetate waste disposal

ICSC 0367 · CAS 141-78-6

Formula: C4H8O2/CH3COOC2H5

Ethyl acetate may be a pure solvent or one component of a formulation. The waste route depends on the product, its process use and any contamination introduced afterwards.

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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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Glycols

Ethylene glycol and antifreeze waste disposal

ICSC 0270 · CAS 107-21-1

Formula: HOCH2CH2OH

Used antifreeze can differ substantially from the original coolant. Glycol identity, formulation and contamination all affect whether recovery or treatment is suitable.

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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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Peroxides

Hydrogen peroxide waste disposal

ICSC 0164 · CAS 7722-84-1

Formula: H2O2

Hydrogen peroxide waste cannot be routed safely from the chemical name alone. Strength, stability, contamination and container condition all matter.

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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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Alcohols

Isopropyl alcohol (IPA) waste disposal

ICSC 0554 · CAS 67-63-0

Formula: C3H8O/CH3CHOHCH3

IPA may be a high-strength solvent, an alcohol-and-water cleaner or part of a formulated product. Use and contamination determine how the resulting liquid, wipes and packaging are assessed.

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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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Alcohols

Methanol waste disposal

ICSC 0057 · CAS 67-56-1

Formula: CH4O/CH3OH

Methanol waste ranges from unused stock to fuel waste and process washings. The route depends on concentration, contamination and whether recovery is technically suitable.

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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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Oxidising solutions

Sodium hypochlorite waste disposal

ICSC 0482 · CAS 7681-52-9

Formula: NaClO

Sodium hypochlorite waste needs to be assessed by strength, age, condition and compatibility, not by the chemical name alone.

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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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Solvents

Toluene waste disposal and solvent recovery

ICSC 0078 · CAS 108-88-3

Formula: C6H5CH3/C7H8

Toluene in thinners, coatings and process washings cannot be assessed from the solvent name alone. Composition and process residues determine whether recovery or another treatment route is suitable.

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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

(2,4,5-TRICHLOROPHENOXY) ACETIC ACID

ICSC 0075 · CAS 93-76-5

Formula: C8H5Cl3O3/C6H2Cl3OCH2COOH

2,4,5-T

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

1-(1-METHYL-2-BUTOXY-ETHOXY)-2-PROPANOL

ICSC 1617 · CAS 29911-28-2

Formula: C10H22O3

n-Butoxy-methylethoxy-propanol; n-Butoxy-propoxy-propanol; DPGnBE; Dipropylene glycol-n-butyl 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.

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Chemical reference

1-(2-BUTOXYPROPOXY)-2-PROPANOL

ICSC 1616 · CAS 24083-03-2

Formula: C10H22O3/CH3(CH2)3OCHCH3CH2OCH2CHOHCH3

Dipropylene glycol monobutyl ether; Dipropylene glycol butyl ether; DPGnBE; 1-(2-Methyl-2-butoxy-ethoxy)-2-propanol

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

1-BROMO-3-CHLOROPROPANE

ICSC 1665 · CAS 109-70-6

Formula: C3H6BrCl/Cl(CH2)3Br

1-Chloro-3-bromopropane; Trimethylene chlorobromide

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

1-BROMOPROPANE

ICSC 1332 · CAS 106-94-5

Formula: C3H7Br/CH3CH2CH2Br

n-Propyl bromide; Propyl bromide; 1-BP

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

1-BUTANOL

ICSC 0111 · CAS 71-36-3

Formula: C4H10O/CH3(CH2)3OH

n-Butanol; n-Butyl alcohol; Propyl carbinol; Butan-1-ol; Butyl alcohol

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

1-CHLORO-1-NITROPROPANE

ICSC 1423 · CAS 600-25-9

Formula: C3H6ClNO2

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-CHLORO-2-(CHLOROMETHYL)BENZENE

ICSC 1763 · CAS 611-19-8

Formula: C7H6Cl2

2-Chlorobenzyl chloride; alpha, 2-Dichlorotoluene; Benzene, 1-chloro-2-(chloromethyl)-

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

1-CHLORO-2-NITROBENZENE

ICSC 0028 · CAS 88-73-3

Formula: C6H4ClNO2

OCNB; o-Chloronitrobenzene; o-Nitrochlorobenzene; 2-Chloro-1-nitrobenzene; ONCB

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

1-CHLORO-2,4-DINITROBENZENE

ICSC 0416 · CAS 97-00-7

Formula: C6H3ClN2O4/C6H3Cl(NO2)2

1,3-Dinitro-4-chlorobenzene; 2,4-Dinitrophenyl chloride; DNCB

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

1-CHLORO-3-NITROBENZENE

ICSC 1633 · CAS 121-73-3

Formula: ClC6H4NO2

Benzene, 1-chloro-3-nitro-; m-Chloronitrobenzene

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

1-CHLORO-3,4-DINITROBENZENE

ICSC 0722 · CAS 610-40-2

Formula: C6H3Cl(NO2)2

1,2-Dinitro-4-chlorobenzene

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

1-CHLORO-4-NITROBENZENE

ICSC 0846 · CAS 100-00-5

Formula: C6H4ClNO2

para-Chloronitrobenzene; PCNB; PNCB; para-Nitrochlorobenzene

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-CHLOROBUTANE

ICSC 0703 · CAS 109-69-3

Formula: C4H9Cl/CH3(CH2)3Cl

Butyl chloride; n-Propylcarbinyl chloride; n-Butyl 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

1-CHLOROETHANE

ICSC 0132 · CAS 75-00-3

Formula: C2H5Cl/CH3CH2Cl

Ethyl chloride; Monochloroethane

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

1-CHLORONAPHTHALENE

ICSC 1707 · CAS 90-13-1

Formula: C10H7Cl

alpha-Naphthyl chloride; alpha-Chloronaphthalene; Chloronaphthalene

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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