Domestic Substances List: CAS 351498-70-9 update

Summary#

Order 2026-66-05-01 Amending the Domestic Substances List: SOR/2026-83 makes a small change to a chemical entry on the Domestic Substances List. It replaces the listing reference 351498-70-9 T-P with 351498-70-9 T. The order was registered and came into force on May 13, 2026.

What it does#

• Replaces the reference 351498-70-9 T-P with 351498-70-9 T in Part 1 of the Domestic Substances List.
• The change was made by the Minister of the Environment (Julie Dabrusin) under the Canadian Environmental Protection Act, 1999.
• The order states it comes into force on the day it is registered (which is May 13, 2026).
• The Gazette notice does not explain what the suffix change from “T‑P” to “T” means or whether it is a technical correction or a substantive reclassification.

Who's affected#

• Businesses and people who make, import, sell, or use the chemical with CAS number 351498-70-9.
• Compliance officers, environmental consultants, and regulators who track chemicals on the Domestic Substances List.
• The public generally only if this listing change leads to different reporting, labeling, or regulatory action. The notice does not say whether those outcomes will happen.

Why it matters#

• The Domestic Substances List is how the federal government identifies substances already on the Canadian market. Even small wording changes can change how a substance is recorded for reporting, assessment, or enforcement.
• For companies handling CAS 351498-70-9, this could affect paperwork or how the substance shows up in regulatory checks.
• The Gazette notice is brief and does not say whether the change is merely editorial or has legal or practical effects. If you work with this chemical and need certainty, check official regulatory guidance or contact the regulator.