Canada Publishes Notice to Gather Information for Potential Risk Management of PFHxS

Posted on: October 28, 2020

by Tammy J. Murphy

fire fighters spraying foam - Canada Publishes Notice to Gather Information for Potential Risk Management of PFHxSOn 10 October 2020, a Notice requiring the submission of information for Perfluorohexane sulfonic acid, its salts and precursors was published in the Canada Gazette, Part I.  The Notice was issued by the Department of the Environment, under paragraph 71(1)(b) of the Canadian Environmental Protection Act, 1999 (CEPA, 1999).

The Section 71 Notice requires those persons who meet the stipulations as detailed in section 2 of the Notice to submit the requested information on-line, via Environment and Climate Change Canada’s (ECCC) Single Window by the 20 November 2020 deadline.

Covered substances are listed in Schedule 1 to the Notice and the submitter must identify total quantities (whether the substance is alone, in manufactured items or mixtures) if imported, exported or used in the 2019 calendar year.  There are exclusions to the reporting requirements.  The information requirements are detailed in sections 5 through 10 and includes, but is not limited to: the CAS number, total quantity of substance used, the substance function code (as provided in Schedule 2) as well as the application code (as provided in Schedule 3).

Not only will the information gathered from the Notice be used to determine whether the listed substances need to be controlled and if so, in what manner, it will also be used to identify the extent to which PFHxS is used in Canadian commerce.  This information will assist in future decision making as internationally PFHxS have been assessed as “persistent organic pollutants under the Stockholm Convention on Persistent Organic Pollutants.”  And, the recommendation has been made to add these substances to Annex A (i.e., “for elimination, without exemptions for production or use”) of that Convention.

The reader should consult the complete text of the Notice for full details on the reporting requirements, substances covered under the Notice as well as the list of substance function codes and application codes.

Recommended Action Items:

  • Review the reporting requirements to determine if you are required to submit information per the Notice.
  • If required to reply, submit information using ECCC’s Single Window on-line reporting system by 20 November 2020.


Department of the Environment, Canadian Environmental Protection Act, 1999, Proposed “Notice with Respect to Perfluorohexane sulfonic acid, its salts and its precursors (PFHxS).” Canada Gazette, Part I, 10 October 2020 edition (see pages 2629 to 2649):


Canada, Canadian Environmental Protection Act, 1999 (CEPA, 1999), Perfluorohexane sulfonic acid (PFHxS)

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