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
• Timelines
• Background

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.