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.
Gases (petroleum), catalytic-cracked gas oil depropanizer bottoms, C4-rich acid-free; Petroleum gas; [A complex combination of hydrocarbons obtained from fractionation of catalytic cracked gas oil hydrocarbon stream and treated to remove hydrogen sulfide and other acidic components. It consists of hydrocarbons having carbon numbers in the range of C3 through C5, predominantly C4.]
CAS 68477-71-4 · GB MCL 649-208-00-9 · EC 270-752-4
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.
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.
Gases (petroleum), catalytic-cracked naphtha debutanizer bottoms, C3-5-rich; Petroleum gas; [A complex combination of hydrocarbons obtained from the stabilization of catalytic cracked naphtha. It consists of aliphatic hydrocarbons having carbon numbers predominantly in the range of C3 through C5.]
CAS 68477-72-5 · GB MCL 649-209-00-4 · EC 270-754-5
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.
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.
Gases (petroleum), crude distn. and catalytic cracking; Refinery gas; [A complex combination produced by crude distillation and catalytic cracking processes. It consists of hydrogen, hydrogen sulfide, nitrogen, carbon monoxide and paraffinic and olefinic hydrocarbons having carbon numbers predominantly in the range of C1 through C6.]
CAS 68989-88-8 · GB MCL 649-168-00-2 · EC 273-563-5
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.
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.
Gases (petroleum), crude oil fractionation off; Petroleum gas; [A complex combination of hydrocarbons produced by the fractionation of crude oil. It consists of saturated aliphatic hydrocarbons having carbon numbers predominantly in the range of C1 through C5.]
CAS 68918-99-0 · GB MCL 649-100-00-1 · EC 272-871-7
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.
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.
Gases (petroleum), deethanizer overheads; Petroleum gas; [A complex combination of hydrocarbons produced from distillation of the gas and gasoline fractions from the catalytic cracking process. It contains predominantly ethane and ethylene.]
CAS 68477-86-1 · GB MCL 649-069-00-4 · EC 270-768-1
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.
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.
Gases (petroleum), dehexanizer off; Petroleum gas; [A complex combination of hydrocarbons obtained by the fractionation of combined naphtha streams. It consists of saturated aliphatic hydrocarbons having carbon numbers predominantly in the range of C1 through C5.]
CAS 68919-00-6 · GB MCL 649-101-00-7 · EC 272-872-2
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.
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.
Gases (petroleum), deisobutanizer tower overheads; Petroleum gas; [A complex combination of hydrocarbons produced by the atmospheric distillation of a butane-butylene stream. It consists of aliphatic hydrocarbons having carbon numbers predominantly in the range of C3 through C4.]
CAS 68477-87-2 · GB MCL 649-070-00-X · EC 270-769-7
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.
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.
Gases (petroleum), depropanizer bottoms fractionation off; Petroleum gas; [A complex combination of hydrocarbons obtained from the fractionation of depropanizer bottoms. It consists predominantly of butane, isobutane and butadiene.]
CAS 68606-34-8 · GB MCL 649-096-00-1 · EC 271-742-2
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.
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.
Gases (petroleum), depropanizer dry, propene- rich; Petroleum gas; [A complex combination of hydrocarbons produced by the distillation of products from the gas and gasoline fractions of a catalytic cracking process. It consists predominantly of propylene with some ethane and propane.]
CAS 68477-90-7 · GB MCL 649-071-00-5 · EC 270-772-3
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.
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.
Gases (petroleum), depropanizer overheads; Petroleum gas; [A complex combination of hydrocarbons produced by distillation of products from the gas and gasoline fractions of a catalytic cracking process. It consists of aliphatic hydrocarbons having carbon numbers predominantly in the range of C2 through C4.]
CAS 68477-91-8 · GB MCL 649-072-00-0 · EC 270-773-9
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.
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.
Gases (petroleum), distillate unifiner desulfurization stripper off; Refinery gas; [A complex combination stripped from the liquid product of the unifiner desulfurization process. It consists of hydrogen sulfide, methane, ethane, and propane.]
CAS 68919-01-7 · GB MCL 649-157-00-2 · EC 272-873-8
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.
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.
Gases (petroleum), dry sour, gas-concn.-unit-off; Refinery gas; [The complex combination of dry gases from a gas concentration unit. It consists of hydrogen, hydrogen sulfide and hydrocarbons having carbon numbers predominantly in the range of C1 through C3.]
CAS 68477-92-9 · GB MCL 649-129-00-X · EC 270-774-4
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.
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.
Gases (petroleum), fluidized catalytic cracker fractionation off; Refinery gas; [A complex combination produced by the fractionation of the overhead product of the fluidized catalytic cracking process. It consists of hydrogen, hydrogen sulfide, nitrogen, and hydrocarbons having carbon numbers predominantly in the range of C1 through C5.]
CAS 68919-02-8 · GB MCL 649-158-00-8 · EC 272-874-3
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.
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.
Gases (petroleum), fluidized catalytic cracker scrubbing secondary absorber off; Refinery gas; [A complex combination produced by scrubbing the overhead gas from the fluidized catalytic cracker. It consists of hydrogen, nitrogen, methane, ethane and propane.]
CAS 68919-03-9 · GB MCL 649-159-00-3 · EC 272-875-9
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.
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.
Gases (petroleum), fluidized catalytic cracker splitter overheads; Petroleum gas; [A complex combination of hydrocarbons produced by the fractionation of the charge to the C3 -C4 splitter. It consists predominantly of C3 hydrocarbons.]
CAS 68919-20-0 · GB MCL 649-105-00-9 · EC 272-893-7
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.
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.
Gases (petroleum), full-range straight-run naphtha dehexanizer off; petroleum gas; [A complex combination of hydrocarbons obtained by the fractionation of the full-range straight-run naphtha. It consists of hydrocarbons having carbon numbers predominantly in the range of C2 through C6.]
CAS 68513-15-5 · GB MCL 649-084-00-6 · EC 271-000-8
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.
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.
Gases (petroleum), gas concn. reabsorber distn.; Refinery gas; [A complex combination of hydrocarbons produced by distillation of products from combined gas streams in a gas concentration reabsorber. It consists predominantly of hydrogen, carbon monoxide, carbon dioxide, nitrogen, hydrogen sulfide and hydrocarbons having carbon numbers in the range of C1 through C3.]
CAS 68477-93-0 · GB MCL 649-130-00-5 · EC 270-776-5
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.
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.
Gases (petroleum), gas oil diethanolamine scrubber off; Refinery gas; [A complex combination produced by desulfurization of gas oils with diethanolamine. It consists predominantly of hydrogen sulfide, hydrogen and aliphatic hydrocarbons having carbon numbers in the range of C1 through C5.]
CAS 92045-15-3 · GB MCL 649-169-00-8 · EC 295-397-2
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.
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.
Gases (petroleum), gas oil hydrodesulfurization effluent; Refinery gas; [A complex combination obtained by separation of the liquid phase from the effluent from the hydrogenation reaction. It consists predominantly of hydrogen, hydrogen sulfide and aliphatic hydrocarbons having carbon numbers predominantly in the range of C1 through C3.]
CAS 92045-16-4 · GB MCL 649-170-00-3 · EC 295-398-8
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.
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.
Gases (petroleum), gas oil hydrodesulfurization purge; Refinery gas; [A complex combination of gases obtained from the reformer and from the purges from the hydrogenation reactor. It consists predominantly of hydrogen and aliphatic hydrocarbons having carbon numbers predominantly in the range of C1 through C4.]
CAS 92045-17-5 · GB MCL 649-171-00-9 · EC 295-399-3
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.
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.
Gases (petroleum), gas recovery plant depropanizer overheads; Petroleum gas; [A complex combination of hydrocarbons obtained by fractionation of miscellaneous hydrocarbon streams. It consists predominantly of hydrocarbons having carbon numbers in the range of C1 through C4, predominantly propane.]
CAS 68477-94-1 · GB MCL 649-073-00-6 · EC 270-777-0
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.
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.
Gases (petroleum), Girbotol unit feed; Petroleum gas; [A complex combination of hydrocarbons that is used as the feed into the Girbatol unit to remove hydrogen sulfide. It consists of aliphatic hydrocarbons having carbon numbers predominantly in the range of C2 through C4.]
CAS 68477-95-2 · GB MCL 649-074-00-1 · EC 270-778-6
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.
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.
Gases (petroleum), heavy distillate hydrotreater desulfurization stripper off; Refinery gas; [A complex combination stripped from the liquid product of the heavy distillate hydrotreater desulfurization process. It consists of hydrogen, hydrogen sulfide, and saturated aliphatic hydrocarbons having carbon numbers predominantly in the range of C1 through C5].
CAS 68919-04-0 · GB MCL 649-160-00-9 · EC 272-876-4
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.
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.
Gases (petroleum), hydrocracking depropanizer off, hydrocarbon-rich; Petroleum gas; [A complex combination of hydrocarbon produced by the distillation of products from a hydrocracking process. It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C1 through C4. It may also contain small amounts of hydrogen and hydrogen sulfide.]
CAS 68513-16-6 · GB MCL 649-085-00-1 · EC 271-001-3
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.
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.
If you spot an error in this library, please contact us so we can check the entry against its source.
Contact us
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.
