New Substances Added to Domestic Substances List

Summary#

This is Order 2026-87-11-01 Amending the Domestic Substances List under the Canadian Environmental Protection Act, 1999. It adds several chemicals (listed by CAS number and some by name) to the Domestic Substances List. The order was registered on September 8, 2026 and published on September 23, 2026.

What it does#

• Adds these CAS numbers to Part 1 of the Domestic Substances List:
  • 21324-40-3
  • 900160-92-1
  • 1159170-26-9
  • 1902936-62-2
• Adds these entries to Part 3 of the Domestic Substances List (CAS number and name where given):
  • 19850-8 — Alkanaminium, N-hydroxyalkyl-N,N-dimethyl, salts with alkanedioic acid monopolyalkylene derivs.
  • 19851-9 — 2-Propenoic acid, 2-methyl-, polymer with butyl 2-propenoate, 2-hydroxyalkyl 2-methyl-2-propenoate, 2-hydroxyethyl 2-propenoate, methyl 2-methyl-2-propenoate and 2-propenamide
  • 19852-0 — Siloxanes and silicones, di-Me, aminoalkyl group-terminated, polymers with isocyanato-isocyanatoalkyl-trimethylcarbomonocycle, methyl-alkanediamine and polyalkylene glycol diamine
  • 19853-1 — Oxoheteromonocycle
  • 19854-2 — Plant-based oil, epoxidized, substituted alkanotate, polymerized
• The order notes that the information used to support these additions was provided under sections of the Act and that the assessment period ended before the additions were made.
• The order comes into force on the day it was registered: September 8, 2026.

Who's affected#

• Companies that manufacture or import the listed chemicals in Canada.
• Businesses that use those chemicals in products or industrial processes.
• Government scientists and regulators who track and assess chemicals in Canada.
• Community groups, researchers, or anyone tracking which chemicals are officially acknowledged as present in Canada.

Why it matters#

• Being added to the Domestic Substances List means the government now records these substances as known to be in Canada. That changes how the chemicals are tracked and reviewed by regulators and industry.
• For companies, the listing may affect how they check regulatory requirements for introducing or reporting substances, because the DSL is a key reference for whether a substance is treated as “existing” in Canada.
• For the public and researchers, the change increases transparency about what chemicals are known to have been manufactured or imported into Canada.

Note: the order states these additions followed information provided under the Act and the expiry of the assessment period. The source does not set out any new specific restrictions or controls in this order itself.