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On August 10, 2024, Canada’s Department of Environment opened a public consultation on unmasking the identities of 198 substances listed confidentially in Part 3 of the Domestic Substances List (DSL) under the Canadian Environmental Protection Act (CEPA). The consultation lasts 60 days. Any person who objects to the unmasking of any of the 198 substances should submit a masked name application for each substance before the consultation period ends.
The DSL is an inventory of substances manufactured in or imported into Canada on a commercial scale. For confidential business information (CBI) concerns, substances can be listed under masked names in the DSL. The target 198 substances have been confidentially listed on DSL since 2004 or earlier. Given the expiry of the 10-year CBI protection period under the CEPA, the Minister of the Environment proposed to disclose their explicit chemical or biological names. Once the proposal is approved, these 198 substances will be deleted from Part 3 of the DSL and added to Part I of the DSL with CAS numbers.
The target 198 confidential substances, including identifier numbers and masked names, can be accessed here.
