Domestic substances list

On May 4, 1994, Environment and Climate Change Canada published the domestic substances list (DSL) in Part II of the Canada Gazette. The DSL is an inventory of approximately 23 000 substances manufactured in, imported into or used in Canada on a commercial scale. It is based on substances present in Canada, under certain conditions, between January 1, 1984 and December 31, 1986.

The DSL is the sole standard against which a substance is judged to be "new" to Canada. With few exemptions, all substances not on this list are considered new and must be reported prior to importation or manufacture in order that they can be assessed to determine if they are toxic or could become toxic to the environment or human health.

It is crucial that notifiers determine whether the substance to be imported into or manufactured in Canada is listed on the DSL or on the non-domestic substances list (NDSL). Substances not appearing on the DSL are considered to be new to Canada and are subject to notification. Substances listed on the NDSL are subject to notification but with reduced information requirements.

For more information on the assessment and management of new substances in Canada, please visit New substances: evaluating new substances.

Contact us

New Substances Division
Environment and Climate Change Canada
351 Saint-Joseph Blvd
Gatineau QC  K1A 0H3

Telephone: 819-938-3232 or 1-800-567-1999 (Canada only)
Facsimile: 819-938-5212

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