Risk management action milestones: Batch 4

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The chemical substances listed below are from Batch 4 of the Challenge, and have met one of more of the criteria of section 64 of the Canadian Environmental Protection Act, 1999 (CEPA 1999). The tables below compile the proposed risk management actions for health and environment. For the complete wording of these proposed actions, please refer to the risk management approaches listed in the  summary of Batch 4 substances and publications. An updated summary of Chemical Management Plan (CMP) risk management instruments is available on the CMP risk management actions table.

Batch 4

CAS RN 64-67-5
Common name: Diethyl sulfate
Authority Risk management actions Most recent milestone
CEPA 1999 Significant New Activity (SNAc) provisions. A SNAc order amending the Domestic Substances List (DSL) was published in the Canada Gazette, Part II, on January 30, 2013.
Food and Drugs Act (F&DA) (cosmetics) Addition to the Cosmetic Ingredient Hotlist. The Cosmetic Ingredient Hotlist has been amended.
CAS RN. 77-78-1
Common name: Dimethyl sulfate
Authority Risk management actions Most recent milestone
CEPA 1999 SNAc provisions. A SNAc order amending the DSL was published in the Canada Gazette, Part II, on - January 30, 2013
F&DA (cosmetics) Addition to the Cosmetic Ingredient Hotlist. The Cosmetic Ingredient Hotlist has been amended.
CAS RN. 68921-45-9
Common name: BNST
Authority Risk management actions Most recent milestone
CEPA 1999 Removal from the Prohibition of Certain Toxic Substances Regulations, 2012 The final Regulations Amending the Prohibition of Certain Toxic Substances Regulations, 2012 were published in Canada Gazette, Part II, on December 13 2017. The amendments remove regulatory controls on BNST.
CEPA 1999 Amendment to Schedule 1 to CEPA 1999 (the List of Toxic Substances) An order deleting BNST from Schedule 1 was published in the Canada Gazette, Part II, on October 28, 2020.
CEPA 1999 Addition to the Prohibition of Certain Toxic Substances Regulations, 2012.

The final Regulations Amending the Prohibition of Certain Toxic Substances Regulations, 2012 were published in the Canada Gazette, Part II, on January 2, 2013.

In December 2016, the Government of Canada published the Consultation document for amending prohibition of certain toxic substances: substituted diphenylamine substances for a 60-day public comment period.

CEPA 1999 Addition of BNST to the Environmental Emergency Regulations. Please refer to the Environmental Emergency Regulations web page  for further details.
CEPA 1999 Monitoring of BNST in the environment and in wastewater. Monitoring results as to the presence of substituted diphenylamines (SDPAs) in environmental media, wastewater effluent and biosolids, are presented in the final screening assessment for these substances, published in December 2017 as part of the Chemical Management Plan.

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