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

PROPAQUIZAFOP

ICSC 1271 · CAS 111479-05-1

Formula: C22H22ClN3O5

2-Isopropylideneamino-oxyethyl (R)-2-(4-(6-chloroquinoxalin-2-yloxy)phenoxy)propionate; (R)-2-(((1-Methylethylidene)amino)oxy)ethyl 2-(4-((6-chloro-2-quinoxalinyl)oxy)phenoxy)propanoate

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

PROPARGYL ALCOHOL

ICSC 0673 · CAS 107-19-7

Formula: C3H4O/CHCCH2OH

2-Propyn-1-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

PROPAZINE

ICSC 0697 · CAS 139-40-2

Formula: C9H16N5Cl

2,4-Bis(isopropylamino)-6-chloro-1,3,5-triazine; 2-Chloro-4,6-bis(isopropylamino)-S-triazine; 1,3,5-Triazine-2,4-diamine, 6-chloro-N,N'-bis(1-methylethyl); 2-Chloro-4,6-bis(isopropylamino)-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

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Chemical reference

PROPIONALDEHYDE

ICSC 0550 · CAS 123-38-6

Formula: C3H6O/CH3CH2CHO

Propionic aldehyde; Methylacetaldehyde; Propanal; Propyl 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

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Chemical reference

PROPIONIC ACID

ICSC 0806 · CAS 79-09-4

Formula: C3H6O2/CH3CH2COOH

Ethylformic acid; Methylacetic acid; Propanoic acid; Ethanecarboxylic 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

PROPIONIC ANHYDRIDE

ICSC 0558 · CAS 123-62-6

Formula: C6H10O3/(CH3CH2CO)2O

Propanoic anhydride; Methylacetic anhydride; Propanoic acid 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

PROPIONITRILE

ICSC 0320 · CAS 107-12-0

Formula: C3H5N/CH3CH2CN

Propanenitrile; Ethyl cyanide; Cyanoethane

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

PROPOXUR

ICSC 0191 · CAS 114-26-1

Formula: C11H15NO3

2-Isopropoxyphenyl methylcarbamate; Phenol, 2-(1-methylethoxy)-,methylcarbamate; 2-(1-Methylethoxy)phenyl methylcarbamate; PHC

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

PROPYLAMINE

ICSC 0941 · CAS 107-10-8

Formula: C3H9N/CH3(CH2)2NH2

n-Propylamine; 1-Aminopropane; Propanamine

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

PROPYLENE

ICSC 0559 · CAS 115-07-1

Formula: C3H6/CH2CHCH3

Methylethylene; Propene; Methylethene

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

PROPYLENE GLYCOL

ICSC 0321 · CAS 57-55-6

Formula: C3H8O2/CH3CHOHCH2OH

1,2-Propanediol; Methyl ethylene glycol; 1,2-Dihydroxypropane

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

PROPYLENE GLYCOL DIACETATE

ICSC 0943 · CAS 623-84-7

Formula: C7H12O4/OC(CH3)OCH2CH(CH3)OC(CH3)O

1,2-Diacetoxypropane; 1,2-Propylene diacetate; alpha Propylene glycol diacetate

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

PROPYLENE GLYCOL DINITRATE

ICSC 1392 · CAS 6423-43-4

Formula: C3H6N2O6/CH3CHONO2CH2ONO2

1,2-Propanediol dinitrate; PGDN

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

PROPYLENE GLYCOL MONOETHYL ETHER

ICSC 1573 · CAS 1569-02-4

Formula: C5H12O2/CH3CH2OCH2CHOHCH3

1-Ethoxy-2-propanol; 2-Propanol-1-ethoxy; 2PG1EE

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

PROPYLENE GLYCOL MONOMETHYL ETHER

ICSC 0551 · CAS 107-98-2

Formula: C4H10O2/H3CCHOHCH2OCH3

1-Methoxy-2-propanol; 1-Methoxy-propane-2-ol; 1-Methoxy-2-hydroxypropane; Propylene glycol methyl 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

PROPYLENE GLYCOL MONOMETHYL ETHER ACETATE

ICSC 0800 · CAS 108-65-6

Formula: C6H12O3/CH3CH(OCOCH3)CH2OCH3

1-Methoxy-2-acetoxypropane; Acetic acid, 2-methoxy-1-methylethyl ester; 1,2-Propanediol monomethyl ether acetate; 1-Methoxy-2-propanol 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

PROPYLENE GLYCOL n-BUTYL ETHER

ICSC 1614 · CAS 5131-66-8

Formula: C7H16O2/CH3CH(OH)CH2O(CH2)3CH3

1-Butoxy-2-propanol; n-Butoxypropanol

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

PROPYLENE OXIDE

ICSC 0192 · CAS 75-56-9

Formula: C3H6O/CH3CHCH2O

Methyl ethylene oxide; Propene oxide; 1,2-Epoxypropane; Methyloxirane

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

PROPYLENEDIAMINE

ICSC 0942 · CAS 78-90-0

Formula: C3H10N2/CH3CH(NH2)CH2NH2

1,2-Propanediamine; 1,2-Diaminopropane

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

PROPYLENEIMINE

ICSC 0322 · CAS 75-55-8

Formula: C3H7N

2-Methylaziridine; Methylethylenimine

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

PROPYNE

ICSC 0560 · CAS 74-99-7

Formula: C3H4/CH3-C=CH

Allylene; Methyl acetylene

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

PYRENE

ICSC 1474 · CAS 129-00-0

Formula: C16H10

Benzo (d,e,f) phenanthrene; beta-Pyrene

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

PYRETHRUM

ICSC 1475 · CAS 8003-34-7

Buhach; Pyrethrum extract; Pyrethrum oleoresin

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

PYRIDINE

ICSC 0323 · CAS 110-86-1

Formula: C5H5N

Azine; Azabenzene

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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