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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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2,777 matching records · Clear search

HSE chemical reference

2-butyryl-3-hydroxy-5-thiocyclohexan-3-yl-cyclohex-2-en-1-one

CAS 94723-86-1 · GB MCL 606-100-00-6 · EC 425-150-8

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-chloro-1,3,5-trinitrobenzene

CAS 88-88-0 · GB MCL 610-004-00-X · EC 201-864-3

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-chloro-3-trifluoromethylpyridine

CAS 65753-47-1 · GB MCL 613-236-00-X · EC 424-520-6

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-chloro-4-(methylsulfonyl)benzoic acid

CAS 53250-83-2 · GB MCL 607-264-00-1 · EC 406-520-8

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-chloro-4-fluoro-5-nitrophenyl (isobutyl)carbonate

CAS 141772-37-4 · GB MCL 602-101-00-0 · EC 427-020-6

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-chloro-5-chloromethylthiazole

CAS 105827-91-6 · GB MCL 613-266-00-3 · EC 429-830-5

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-chloro-5-methyl-pyridine

CAS 18368-64-4 · GB MCL 613-221-00-8 · EC 418-050-0

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-chloro-5-sec-hexadecylhydroquinone

CAS 137193-60-3 · GB MCL 606-083-00-5 · EC 407-750-1

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-chloro-6-(ethylamino)-4-nitrophenol

CAS 131657-78-8 · GB MCL 609-059-00-2 · EC 411-440-1

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-chloro-6-fluoro-phenol

CAS 2040-90-6 · GB MCL 604-082-00-4 · EC 433-890-8

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-chloro-N-(4-methylphenyl)acetamide

CAS 16634-82-5 · GB MCL 616-179-00-9 · EC 435-170-9

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-chloro-p-toluenesulfochloride

CAS 42413-03-6 · GB MCL 016-077-00-9 · EC 412-890-1

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-chlorobenzonitrile

CAS 873-32-5 · GB MCL 608-013-00-9 · EC 212-836-5

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-chloromethyl-3,4-dimethoxypyridinium chloride

CAS 72830-09-2 · GB MCL 613-215-00-5 · EC 416-440-5

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-cyclododecylpropan-1-ol

CAS 118562-73-5 · GB MCL 603-159-00-X · EC 411-410-8

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-cyclohexylidene-2-phenylacetonitrile

CAS 10461-98-0 · GB MCL 608-044-00-8 · EC 423-740-1

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-cyclohexylpropanal

CAS 2109-22-0 · GB MCL 605-029-00-8 · EC 412-270-0

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-cyclopentene-1-acetic acid, 3-hydroxy-2-pentyl-, methyl ester acetate

CAS 57374-49-9 · GB MCL 607-571-00-0 · EC 431-400-7

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-cyclopentylidene cyclopentanol; 1,1’-bi(cyclopentyliden)-2-ol

CAS 6261-30-9 · GB MCL 603-223-00-7 · EC 434-270-1

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-diethylaminoethyl methacrylate

CAS 105-16-8 · GB MCL 607-127-00-6 · EC 203-275-7

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-ethoxyaniline; o-phenetidine

CAS 94-70-2 · GB MCL 612-039-00-6 · EC 202-356-4

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-ethyl-1-(2-(1,3-dioxanyl)ethyl)-pyridinium bromide

CAS 287933-44-2 · GB MCL 601-069-00-5 · EC 422-680-1

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-ethyl-2-[[(1-oxoallyl)oxy] methyl]-1,3-propanediyl diacrylate; 2,2-bis(acryloyloxymethyl)butyl acrylate; trimethylolpropane triacrylate

CAS 15625-89-5 · GB MCL 607-111-00-9 · EC 239-701-3

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

HSE chemical reference

2-ethyl-2,3-dihydro-2-methyl-1H-perimidine

CAS 43057-68-7 · GB MCL 613-279-00-4 · EC 424-380-6

Reference entry from the HSE GB mandatory classification and labelling list. Use the listed chemical name and identifiers to compare with the product label and supplier safety data sheet. The reference identifies the substance; it does not classify a waste stream.

HSE: GB chemical identity source

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.

HSE: GB chemical identity source

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.