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.

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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

2-ETHYLHEXANOIC ACID

ICSC 0477 · CAS 149-57-5

Formula: C8H16O2/CH3(CH2)3CH(C2H5)COOH

2-Ethylcaproic acid; 3-Heptanecarboxylic 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

2-ETHYLHEXANOL

ICSC 0890 · CAS 104-76-7

Formula: C8H18O/CH3(CH2)3CH(CH2CH3)CH2OH

2-Ethyl-1-hexanol; 2-Ethylhexyl alcohol; Isooctanol

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

2-ETHYLHEXYL ACRYLATE

ICSC 0478 · CAS 103-11-7

Formula: C11H20O2/CH2=CHCOOC8H17

Acrylic acid, 2-ethylhexyl ester; Octyl acrylate; 2-Propenoic acid, 2-ethylhexyl ester; 2-Ethylhexyl 2-propenoate

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

2-ETHYLHEXYL METHACRYLATE

ICSC 1289 · CAS 688-84-6

Formula: C12H22O2/CH2=CCH3COOCH2C(CH2CH3)H(CH2)3CH3

Methacrylic acid, 2-ethylhexyl 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

2-HEPTANOL

ICSC 1083 · CAS 543-49-7

Formula: C7H16O/CH3(CH2)4CHOHCH3

sec-Heptyl alcohol; Amyl methyl carbinol; 1-Methylhexanol; 2-Heptyl alcohol; 2-Hydroxyheptane

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

2-HEXANOL

ICSC 0488 · CAS 626-93-7

Formula: C6H14O/CH3(CH2)3CHOHCH3

sec-Hexyl alcohol; Butylmethylcarbinol

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

2-HEXANONE

ICSC 0489 · CAS 591-78-6

Formula: C6H12O/C4H9COCH3

Methyl n-butyl ketone; n-Butyl methyl ketone; MBK

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

2-HYDROXYETHYL ACRYLATE

ICSC 1723 · CAS 818-61-1

Formula: C5H8O3

2-Propenoic acid, 2-hydroxyethylester; Acrylic acid hydroxyethyl ester; Ethylene glycol monoacrylate

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

2-HYDROXYETHYL METHACRYLATE

ICSC 1724 · CAS 868-77-9

Formula: C6H10O3

2-Propenoic acid, 2-methyl-,2-hydroxiethyl ester; Ethylene glycol monomethacrylate; HEMA

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

2-HYDROXYPROPYL ACRYLATE

ICSC 0899 · CAS 999-61-1

Formula: C6H10O3/CH2=CHCOOCH2CH(CH3)OH

beta-Hydroxypropyl acrylate; 1,2-propanediol-1-acrylate; Acrylic acid, 2-hydroxypropyl ester; Propylene glycol monoacrylate

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

2-MERCAPTOBENZOTHIAZOLE

ICSC 1183 · CAS 149-30-4

Formula: C7H5NS2/C6H4SNCSH

Benzothiazolethiol; Benzothiazole-2-thione; MBT

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

2-MERCAPTOBENZOTHIAZOLE DISULFIDE

ICSC 0505 · CAS 120-78-5

Formula: C14H8N2S4

Benzothiazolyl disulfide; MBTS; 2,2'-Dithiobis (benzothiazole)

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

2-MERCAPTOETHANOL

ICSC 0916 · CAS 60-24-2

Formula: C2H6OS/HSCH2CH2OH

2-Hydroxyethanethiol; Monothioethyleneglycol; Thioglycol

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

2-MERCAPTOIMIDAZOLINE

ICSC 1148 · CAS 96-45-7

Formula: C3H6N2S

2-Imidazolidinethione; Ethylene thiourea; ETU

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

2-METHOXY-2-METHYLBUTANE

ICSC 1496 · CAS 994-05-8

Formula: C6H14O

tert-Amyl methyl ether; TAME; tert-Pentyl methyl ether; 1,1-Dimethyl propylmethyl ether; Methyl-tert-pentyl 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

2-METHOXYETHYL ACETATE

ICSC 0476 · CAS 110-49-6

Formula: C5H10O3/CH3COOCH2CH2OCH3

Acetic acid, 2-methoxyethyl ester; Methyl cellosolve acetate; Methyl glycol acetate; Ethylene glycol monomethyl ether acetate; 2-Methoxyethanol 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

2-METHYL-1-BUTANOL

ICSC 0506 · CAS 137-32-6

Formula: C5H12O/CH3CH2CH(CH3)CH2OH

2-Methyl butanol-1; sec-Butylcarbinol

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

2-METHYL-2-PROPANETHIOL

ICSC 0019 · CAS 75-66-1

Formula: (CH3)3CSH/C4H10S

tert-Butyl 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

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Chemical reference

2-METHYLBUT-3-EN-2-OL

ICSC 1719 · CAS 115-18-4

Formula: C5H10O

3-Hydroxy-3-methylbutene; Dimethylvinylmethanol; 2-Methyl-3-buten-2-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

2-METHYLBUT-3-YN-2-OL

ICSC 1746 · CAS 115-19-5

Formula: C5H8O/(CH3)2C(OH)CCH

2-Methyl-3-butyn-2-ol; Ethynyldimethylcarbinol

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

2-METHYLCYCLOHEXANOL

ICSC 0294 · CAS 583-59-5

Formula: C7H14O

o-Methylcyclohexanol; 2-Hexahydromethylphenol; o-Hexahydromethylphenol

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

2-METHYLHEPTANE

ICSC 0731 · CAS 592-27-8

Formula: C8H18/CH3CH(CH3)CH2(CH2)3CH3

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

2-METHYLNAPHTHALENE

ICSC 1276 · CAS 91-57-6

Formula: C11H10

beta-Methylnaphthalene

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

2-METHYLPENTANE

ICSC 1262 · CAS 107-83-5

Formula: C6H14/CH3CH(CH3)(CH2)2CH3

Isohexane; Dimethylpropylmethane

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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