Hazardous Products Regulations alignment with a newer GHS revision
Health Canada amended the Hazardous Products Regulations to align WHMIS supplier requirements with GHS Revision 7, plus the Chemicals Under Pressure physical hazard class from GHS Revision 8. The amendments took effect 15 December 2022, and the 3-year transition period for updating classifications, SDSs and labels ended 14 December 2025. Suppliers into Canada should treat the amended HPR as the active compliance baseline now, while checking Canada/US variances rather than assuming one North American SDS satisfies both jurisdictions.
Published16 Sept 2026
EffectiveIn force since 15 December 2022 (published Canada Gazette Part II, 4 January 2023); based on GHS Revision 7, plus the Chemicals Under Pressure physical hazard class from GHS Revision 8
Compliance deadlineThe 3-year transition period ended 14 December 2025 — suppliers should no longer rely on it for covered products. Health Canada has said it will focus on compliance promotion until the end of the aligned US OSHA HCS 2024 mixtures compliance date (currently 19 November 2027), after which risk-based enforcement applies; this is compliance-promotion context, not an extension of Canada's own HPR transition deadline.
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