What is the Domestic Substances List (DSL)?
The Domestic Substances List (DSL) includes substances that were, between January 1, 1984, and December 31, 1986: 1) in Canadian commerce, or 2) used for manufacturing purposes, or 3) manufactured in or imported into Canada in a quantity of 100 kg or more in any calendar year. Substances on the DSL are also referred to as “existing” substances. There are approximately 23,000 substances on the DSL. The types of substances on the DSL include, organic chemicals (which make up half of the DSL substances), polymers, inorganic substances, products of biotechnology, and substances that are of “Unknown or Variable Composition, complex reaction products, or Biological materials” (referred as UVCBs). Although “new substances” are also included on the DSL, only those substances which have not or will not be evaluated as a new substance will be examined under the DSL Categorization and Screening exercise; otherwise these “new substances” are subject to the New Substances Notification Regulations (
Related Questions
- Does WHMIS require the disclosure of information in relation to the Domestic Substances List (DSL) and the Non-domestic Substances List (NDSL)?
- Why are hydrochloric acid and hydrogen chloride listed separately in the List of Regulated Substances at 40 CFR ยง68.130?
- What is the Domestic Substances List (DSL)?
