Domestic Substances List Additions

Summary#

Order 2020-87-14-01 Amending the Domestic Substances List is a federal order that adds a set of chemicals to the Domestic Substances List. The order was registered on December 11, 2020 and appeared in the Canada Gazette on December 23, 2020.

What it does#

• Adds a number of substances to Part 1 and Part 3 of the Domestic Substances List.
• The government says it received the required information about these substances, determined that they had been manufactured in or imported into Canada above the notification threshold, and that the statutory assessment period had ended with no outstanding conditions.
• The order “comes into force on the day on which it is registered” (registration was December 11, 2020).

Substances added (as shown in the order)

• Part 1: CAS numbers added include 10016-20-3; 35415-27-1; 61800-40-6; 113184-29-5; 119275-52-4; 142982-20-5; 193562-35-5; 472976-92-4; 1078715-97-5; 2220127-36-4; 2361055-93-6.
• Part 3: Chemical names added include:
  • Castor oil, polymer with 1,1′-methylenebis[isocyanatobenzene] and polypropylene glycol, polyalkoxymetalloid‑N‑[(polyalkoxymetalloid)alkyl]-1-propanamine-blocked
  • 2‑Propenoic acid, 2‑methyl-, cyclohexyl ester, polymers with halogenated polyalkylene, 2‑hydroxyethyl methacrylate, iso‑Bu methacrylate and Me methacrylate
  • 2‑Propenoic acid, 2‑carboxyethyl ester, polymer with ethenylbenzene, 2‑ethylhexyl 2‑propenoate and alkyl 2‑propenoate
  • Siloxanes and silicones, di‑Me, [poly[[(substituted‑alkeneyl)substituted]alkyl]substituted alkyl]substituted alkyl group‑terminated
  • Terpenes and terpenoids, turpentine‑oil, trialkyl carbopolycycle fraction, polymers with styrene and turpentine‑oil trialkyl carbopolycycle fraction terpenes
  • Alkenoic acid, alkyl‑, telomer with butyl 2‑propenoate, N‑(1,1‑dimethyl‑3‑oxobutyl)‑2‑propenamide, ethylalkyl mercaptoalkanoate and methyl 2‑methyl‑2‑propenoate

Who's affected#

• Companies that make or import the listed chemicals into Canada.
• Businesses that use these chemicals in manufacturing, formulations, or products.
• Environmental and public‑health officials who track and assess chemicals on the Domestic Substances List.
• The order itself does not spell out specific downstream requirements; how it changes obligations for any given company depends on other rules under the Canadian Environmental Protection Act, 1999.

Why it matters#

• Being added to the Domestic Substances List signals that the government now recognizes these chemicals as present in Canada at the time of registration.
• For companies, this can affect whether a substance is treated as “new” for notification and assessment programs — but the exact regulatory effects depend on other parts of the law and regulations.
• For the public, additions can influence which chemicals regulators monitor or assess for health and environmental risks.