Stannate zinc polymer added to DSL

Summary#

Order 2026-87-06-01 Amending the Domestic Substances List adds one chemical to the Domestic Substances List and keeps rules that require advance notice for certain new uses. The chemical is listed as stannate (Sn(OH)6)2-, zinc (1:1), (OC-6-11)- (CAS 12027-96-2).

What it does#

• Adds the substance with CAS 12027-96-2 to the Domestic Substances List under the Canadian Environmental Protection Act, 1999.
• Keeps the “significant new activity” (SNAc) requirements for the substance. That means companies must notify the government and provide data before starting certain new uses.
• Defines the kinds of new activities that trigger notification:
  • making consumer products that release or spray the substance in airborne particles, if the total made in a calendar year is greater than 1,000 kg (transitional period applies; see below);
  • importing consumer products that release or spray the substance in airborne particles, if the total imported in a calendar year is greater than 1,000 kg (transitional period applies);
  • any other activity involving the substance if the total across those activities in a calendar year is greater than 100 kg.
• Sets a transitional timeframe with higher thresholds until March 7, 2027, and lower (final) thresholds starting March 8, 2027 (or on registration if the Order is registered after that day).
• Requires anyone planning a significant new activity to submit a Significant New Activity Notification (SNAN) to the Minister at least 90 days before the activity starts.
• Specifies nanoscale triggers: an activity is considered significant only if the substance’s particles meet at least one of these:
  • 10% or more of particles by number are between 1 and 100 nm, or
  • 1% or more of particles by mass are between 1 and 100 nm.
• Points to internationally accepted test and reporting guidance (for example, OECD documents) for how some required studies should be done.

Who's affected#

• Manufacturers and importers of consumer products that could release or spray airborne particles (for example, aerosols and sprays).
• Companies that plan to use, make, or import the substance in quantities above the thresholds (notably 100 kg, 1,000 kg, or 10,000 kg depending on the activity level described in the Order).
• Businesses exploring uses mentioned in the assessment, such as in consumer sprays, air purifiers, or lithium‑ion battery applications, where inhalation or nanoscale exposure is possible.
• Laboratories, test houses or consultants who prepare the data needed for a SNAN.
• The following are explicitly not caught by the SNAc notification rules: uses that are only for research and development, site‑limited intermediates, export‑only products, and certain products already regulated under other federal laws (for example, the Pest Control Products Act, the Fertilizers Act, or the Feeds Act).
• If it is unclear whether a proposed use meets the SNAc thresholds or nanoscale criteria, the Order requires the proposer to check and, if needed, notify the Minister.

Why it matters#

• The Order keeps a safety check on new, larger-scale, or nanoscale uses of this substance so the government can assess risks before those uses begin.
• For businesses, it means planning: if you want to start a significant new activity with this chemical you must assemble required data and submit it at least 90 days before starting. That can take time and cost money for testing.
• For the public, the rule targets situations that could lead to inhalation exposure (sprayed or airborne particles) and nanoscale hazards, so it helps reduce the chance of new uses causing health or environmental harm.
• At the same time, adding the substance to the Domestic Substances List removes some earlier notification paperwork for routine existing uses, which can make market access simpler for approved activities.