UK Releases the 7th Edition of the Mandatory Classification and Labelling List, Adding 30 Hazardous Substances to New Regulations

Oct 22, 2025

Classification&Labelling

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On September 16, 2025, the UK Health and Safety Executive (HSE) officially issued the seventh edition of the Great Britain Mandatory Classification and Labelling (GB MCL) List, introducing new and revised classification criteria for 30 hazardous chemical substances.

Newly Added Substances

Complete MCL List

https://view.officeapps.live.com/op/view.aspx?src=https%3A%2F%2Fwww.hse.gov.uk%2Fchemical-classification%2Fassets%2Fdocs%2Fmcl-list.xlsx&wdOrigin=BROWSELINK

The new regulations came into effect on September 23, 2025, with a final compliance deadline of March 23, 2027. Relevant businesses must adjust product labeling, safety data sheets (SDS), and supply chain management processes during this period.

Further Information

HSE

ECHA Opens Public Consultation on Harmonized Classification and Labelling (CLH) Proposals for Two Substances

U.S. EPA Adds 18 New Chemicals to Safer Chemical Ingredients List

For more information, please contactchemicals@cirs-group.com

Service Hotline:

+1 703 520 1420 (USA)+353 1 477 3710 (EU)+86 571 8720 6598 (CN)

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