Seven Substances Added to Domestic List

Summary#

Order 2024-87-07-01 Amending the Domestic Substances List (SOR/2024-174) adds 7 substances to the Domestic Substances List. The change removes those substances from Canada’s new-substance notification rules and took effect on the day the order was registered (September 5, 2024).

What it does#

• Adds 7 chemicals and polymers to the Domestic Substances List under the Canadian Environmental Protection Act, 1999.
  • Two are listed by CAS numbers in Part 1: 4724-48-5 and 165101-57-5.
  • Five are added to Part 3 with Confidential Accession Numbers (CANs): 19728-6 N-P, 19729-7 N-P, 19730-8 N-P, 19731-9 N-P, 19732-0 N-P.
• Separately, the government also moved 20 substances from Part 3 to Part 1 (unmasking their chemical identities) after getting written consent from the companies involved.
• A total of 27 entries on the list were updated for identifiers, names or flags (administrative corrections, including adding an “N” flag to some organisms).
• The practical legal effect: once on the Domestic Substances List, these substances are no longer treated as “new” and are not subject to the pre‑market notification requirements in the New Substances Notification Regulations.

Who's affected#

• Chemical manufacturers, importers and distributors that work with any of the 7 newly added substances.
• Companies that previously claimed confidentiality for the 20 unmasked substances — their identities are now public on the list.
• Regulators and downstream users (product formulators, industrial users) who rely on the Domestic Substances List to know whether a substance requires pre‑market notification.
• The general public and communities near chemical users may be indirectly affected if these substances are used more widely; the notice does not say which products they appear in.

If it matters to you: the Canada Gazette item does not list what products or uses involve these substances, so whether you will see them in consumer products or local industry is unclear from this notice.

Why it matters#

• Being added to the Domestic Substances List means the substances are no longer “new” in Canada. That typically reduces pre‑market reporting and testing paperwork for businesses.
• Unmasking 20 substances increases transparency about what chemicals are present in the Canadian market.
• The order does not create new regulatory limits or new costs. The ministers reviewed the information under the Canadian Environmental Protection Act, 1999 before adding the substances.
• The notice does not describe specific health or environmental risks tied to each substance, nor does it say which consumer products may contain them.