Alkyl Halides Group

These substances were identified for action under the Chemicals Management Plan (CMP). This screening assessment focuses on 8 of 15 substances referred to collectively under the CMP as the Alkyl Halides Group.

Summary of publications
Substance group CAS RN Common name DSL name Draft screening assessment Risk management scope Proposed conclusion on section 64 criteria Follow-up activities
Alkyl Halides Group 74-96-4 Bromoethane Ethane, bromo- HTML None Does not meet None planned at this time
75-00-3 Chloroethane Ethane, chloro-
106-94-5aFootnote a 1-bromopropane Propane, 1-bromo- HTML Meets one or more of the criteria Refer to risk management scope
156-60-5Footnote b Trans-1,2-dichloroethene Ethene, 1,2-dichloro-, (E)- None Does not meet None planned at this time
Footnote a

This substance was not identified under subsection 73(1) of the Canadian Environmental Protection Act, 1999 (CEPA 1999) but was included in this assessment as it considered a priority on the basis of other human health concerns.

Return to footnote a referrer

Footnote b

This substance was not identified under subsection 73(1) of CEPA 1999 but was included in this assessment as it was determined to be a priority as a result of Identification of Risk Assessment Priorities (IRAP).

Return to footnote b referrer

Timelines
Date Activity
March 2023 Anticipated publication of the final screening assessment and proposed risk management approach.
March 5, 2022 Publication and start of 60-day public comment period on the Draft Screening Assessment for the Alkyl Halides Group and the Risk Management Scope for the Alkyl Halides Group, specifically: 1-Bromopropane. The related notice was published in the Canada Gazette, Part I: Vol. 156, No. 10.

Background

At the outset of the third phase of the CMP, 4 alkyl halides (CAS RNs 74-96-4, 75-00-3, 706-94-5, 156-60-5) were a part of a group of 8 substances referred to collectively under the CMP as the Alkyl or Aryl Halides Group. The 4 aryl halides (CAS RNs 77-47-4, 74-88-4, 126-99-8 and 630-20-6) were subsequently determined to be of low concern to both human health and the environment through other approaches. The conclusion for CAS RN 77-47-4 is provided in the Final Screening Assessment for Substances Identified as Being of Low Concern using the Ecological Risk Classification of Organic Substances and the Threshold of Toxicological Concern (TTC)-based Approach for Certain Substances. The conclusions for CAS RNs 74-88-4, 126-99-8 and 630-20-6 are provided in the Final Screening Assessment for the Rapid Screening of Substances with Limited General Population Exposure.

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