Non-domestic Substances List Amended

Summary#

The government issued Order 2026-66-09-02 Amending the Non-domestic Substances List under the Canadian Environmental Protection Act, 1999. It removes two chemical entries (1245903-66-5, 1703784-30-6) from Part I of the Non-domestic Substances List and adds one entry (1703784-30-8); the order takes effect on August 1, 2026.

What it does#

• Deletes 1245903-66-5 and 1703784-30-6 from Part I of the Non-domestic Substances List.
• Adds 1703784-30-8 to Part I of the Non-domestic Substances List (in numerical order).
• The order was signed by Julie Dabrusin on July 21, 2026 and comes into force the day it is published in the Canada Gazette (published August 1, 2026).

Who's affected#

• Companies and people who import, manufacture, sell or use the specific substances identified by the CAS numbers above.
• Environmental regulators and labs that track or assess non-domestic chemical substances.
• It is unclear from the notice which common chemical names, products, or industries correspond to these CAS numbers, so it’s not possible from this text alone to say exactly which businesses or products will notice the change.

Why it matters#

• The Non-domestic Substances List is used by the government to identify chemicals that are subject to assessment or specific reporting requirements. Moving a CAS number on or off the list can change whether a substance is flagged for review or must be reported to federal authorities.
• For businesses dealing with these chemicals, the change could affect paperwork, testing or future regulatory review. Because the public notice shows only CAS numbers and no common names or uses, affected parties may need to check the CAS numbers against their own inventory to see if they are impacted.