Non-Domestic Substances List Amended

Summary#

Order 2026-66.1-01-02 Amending the Non-Domestic Substances List is a federal notice under the Canadian Environmental Protection Act, 1999 that removes a long list of chemicals (identified by CAS numbers) from the Non‑domestic Substances List and adds them to the Domestic Substances List. The Order was signed on July 28, 2026 and its entry into force is linked to a related order that amends the Domestic Substances List.

What it does#

• Deletes many specific chemicals (listed by CAS registry numbers) from Part I of the Non‑domestic Substances List.
• States that those same chemicals have been added to the Domestic Substances List.
• Says the Order takes effect on the day that Order 2026-66.1-01-01 Amending the Domestic Substances List comes into force.
• The Order is filed by the Minister of the Environment (signed by Julie Dabrusin).

Who's affected#

• Companies that make, import, distribute or use the listed chemicals in Canada — chemical manufacturers, importers, distributors, formulators and some downstream users are the most likely to notice a change.
• Consultants, compliance officers and testing labs who track chemical inventories or regulatory lists.
• It is not obvious from the notice what the common names or uses of each CAS number are; the Order lists only CAS numbers, so affected parties will need to check those numbers against their products or inventories.

Why it matters#

• Being on the Domestic Substances List generally means a chemical is recognized as “existing” in Canada; that status can affect how the chemical is tracked, screened or regulated under federal environmental law.
• Businesses that handle these chemicals should check whether the change alters reporting, notification or compliance steps they must take.
• The exact legal or practical effects and the date the change takes effect are tied to the related Domestic Substances List order, so the timing and any immediate obligations may be unclear until that other order comes into force.