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

METHYLHEXAHYDROPHTHALIC ACID ANHYDRIDE

ICSC 1644 · CAS 25550-51-0

Formula: C9H12O3

MHHPA; Hexahydromethylphthalic acid anhydride; 1,3-Isobenzofurandione, hexahydromethyl-

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

METHYLTETRAHYDROPHTHALIC ANHYDRIDE

ICSC 1645 · CAS 26590-20-5

Formula: C9H10O3

MTHPA; Tetrahydromethyl-1,3-isobenzofuranedione; 1,2,3,6-tetrahydromethylphthalic anhydride; 1,3-Isobenzofurandione, 3a,4,7,7a-tetrahydromethyl-

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

METHYLTRICHLOROSILANE

ICSC 0301 · CAS 75-79-6

Formula: CH3SiCl3

Trichloromethylsilane

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

METOLACHLOR

ICSC 1360 · CAS 51218-45-2

Formula: C15H22ClNO2

2-Chloro-6'-ethyl-N-(2-methoxy-1-methylethyl)aceto-o-toluidide; 2-Chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)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

METRIBUZIN

ICSC 0516 · CAS 21087-64-9

Formula: C8H14N4OS

4-Amino-6-tert-butyl-3-methylthio-as-triazin-5-one; 4-Amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-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

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Chemical reference

MEVINPHOS (ISOMER MIXTURE)

ICSC 0924 · CAS 7786-34-7

Formula: C7H13O6P

Methyl 3-(dimethoxyphosphinoyloxy)but-2-enoate; 2-methoxycarbonyl-1-methylvinyl dimethyl phosphate

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

MOLYBDENUM

ICSC 1003 · CAS 7439-98-7

Formula: MoAtomicmass:95.9

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

MONOCROTOPHOS

ICSC 0181 · CAS 6923-22-4

Formula: C7H14NO5P/(CH3O)2PO-OC(CH3)=CHCO-NHCH3

Dimethyl (E)-1-methyl-2-(methylcarbamoyl) vinyl phosphate; trans-Monocrotophos ; (E)-Phosphoric acid dimethyl [1-methyl-3-(methylamino)-3-oxo-1-propenyl] 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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Chemical reference

MONOLINURON

ICSC 1273 · CAS 1746-81-2

Formula: C9H11ClN2O2

3-(4-Chlorophenyl)-1-methoxy-1-methylurea; Urea, N'-(4-chlorophenyl)-N-methoxy-N-methyl-; 3-(p-Chlorophenyl)-1-methoxy-1-methylurea

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

MONONITROPHENOLS

ICSC 1342 · CAS 25154-55-6

Formula: C6H5O3N

Nitrophenols (mixed isomers); Nitrophenols

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

MORPHOLINE

ICSC 0302 · CAS 110-91-8

Formula: C4H9NO

Tetrahydro-1,4-oxazine; Diethylene oximide

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

N-(1,3-DIMETHYLBUTYL)-N'-PHENYL-p-PHENYLENEDIAMINE

ICSC 1635 · CAS 793-24-8

Formula: C18H24N2

N-(4-Methyl-2-pentyl)-N'-phenyl-1,4-diaminobenzene; 1,4-Benzenediamine, N-(1,3-dimethylbutyl)-N'-phenyl-; p-Phenylenediamine, N-(1,3-dimethylbutyl)-N'-phenyl-; 6PPD

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

n-AMYL ACETATE

ICSC 0218 · CAS 628-63-7

Formula: C7H14O2/CH3COO(CH2)4CH3

n-Pentyl acetate; 1-Pentyl acetate; Acetic acid, 1-pentyl 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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Chemical reference

n-BUTENE

ICSC 0396 · CAS 106-98-9

Formula: C4H8/CH3CH2CH=CH2

Ethylethylene; n-Butylene; 1-Butene

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

n-BUTYL ACETATE

ICSC 0399 · CAS 123-86-4

Formula: C6H12O2/CH3COO(CH2)3CH3

Acetic acid, n-butyl ester; Butyl ethanoate

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

n-BUTYL CHLOROFORMATE

ICSC 1593 · CAS 592-34-7

Formula: C5H9ClO2/CH3(CH2)3OCOCl

Butyl chlorocarbonate; Butyl chloroformate; Chloroformic acid butyl ester; Carbonochloridic acid, 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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Chemical reference

n-BUTYL ETHER

ICSC 1150 · CAS 142-96-1

Formula: C8H18O/(CH3CH2CH2CH2)2O

1-Butoxybutane; Di-n-butyl ether; 1,1'-Oxybis(butane)

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

n-BUTYL GLYCIDYL ETHER

ICSC 0115 · CAS 2426-08-6

Formula: C7H14O2

BGE; 1-Butoxy-2,3-epoxypropane; 2,3-Epoxypropyl butyl ether; (Butoxymethyl)oxirane

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

n-BUTYL ISOCYANATE

ICSC 1642 · CAS 111-36-4

Formula: C5H9NO/CH3(CH2)3NCO

1-Isocyanatobutane

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

n-BUTYL MERCAPTAN

ICSC 0018 · CAS 109-79-5

Formula: C4H10S/CH3(CH2)3SH

1-Butanethiol; Butyl mercaptan; Thiobutyl 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.

ILO / WHO chemical safety card

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Chemical reference

n-BUTYLAMINE

ICSC 0374 · CAS 109-73-9

Formula: C4H11N/CH3(CH2)3NH2

1-Aminobutane; 1-Butanamine; Monobutylamine

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

n-BUTYRONITRILE

ICSC 1465 · CAS 109-74-0

Formula: C4H7N/CH3CH2CH2CN

Butanenitrile; Butyric acid nitrile; 1-Cyanopropane; n-Propyl cyanide

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

n-DECYL ACRYLATE

ICSC 0368 · CAS 2156-96-9

Formula: C13H24O2

2-Propenoic acid, decyl ester; Acrylic acid, decyl 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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Chemical reference

N-ETHYL-N-BENZYLANILINE

ICSC 1550 · CAS 92-59-1

Formula: C15H17N

N-Benzyl-N-ethylaniline; Ethylbenzylaniline; N-Ethyl-N-phenylbenzylamine

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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