The New Substances Notification Regulations (NSNR) of the Canadian Environmental Protection Act (CEPA) requires the notification of substances new to Canada with prescribed information. These substances are assessed to determine whether they are potentially “toxic,” in order for appropriate control measures to be implemented to mitigate risk to human health and/or the environment. Some substances meet criteria that allows them to be notified as “reduced regulatory requirements” (RRR) polymers. One criterion relates to polymer stability. Polymers that “substantially” degrade, decompose or "depolymerize” do not meet the description of a RRR polymer. An interpretation is that “substantial” be judged against both the degree of degradation, and the influence of the transformation products in risk assessment. Canada’s draft policy regarding that interpretation and its implementation will be explored.

Polymers that substantially degrade, decompose or depolymerize: Draft interpretation affecting the notification of new polymers under Canadian new substances notification regulations

253rd National Meeting (2017)

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