Alkyl Halides Group
These substances were identified for action under the Chemicals Management Plan (CMP). The assessment focused on four substances referred to collectively under the CMP as the Alkyl Halides Group.
| Substance group | CAS RN | Common name | DSL name | Public comments on the draft screening assessment | Final assessment | Proposed risk management approach | Conclusion on section 64 criteria | Follow-up activities |
|---|---|---|---|---|---|---|---|---|
| Alkyl Halides Group | 74-96-4 | Bromoethane | Ethane, bromo- | HTML | HTML | None | Does not meet | None planned at this time |
| 75-00-3 | Chloroethane | Ethane, chloro- | None | Does not meet | None planned at this time | |||
| 106-94-5 | 1-Bromopropane | Propane, 1-bromo- | HTML | Meets one or more of the criteria | Refer to proposed risk management approach | |||
| 156-60-5 | Trans-1,2-dichloroethene | Ethene, 1,2-dichloro-, (E)- | None | Does not meet | None planned at this time |
| Date | Activity |
|---|---|
| August 29, 2026 | Publication in Canada Gazette, Part I, of a notice under section 71 of CEPA. |
| April 25, 2026 | Publication of the final assessment. The Risk Management Approach for Propane, 1-bromo- (1-Bromopropane) was also published for a 60-day public comment period. The related notice was published in the Canada Gazette, Part I: Vol. 160, No. 17. |
| 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 Propane, 1-bromo- (1-Bromopropane). The related notice was published in the Canada Gazette, Part I: Vol. 156, No. 10. |
Information gathering
Section 71 CMP 2026 – Phase 1
In August 2026, a notice was published in the Canada Gazette, Part I: Vol. 160, No. 35 – August 29, 2026, under section 71 of CEPA. This notice applies to three substances included in this substance grouping (CAS RNs 106-94-5, 74-96-4, and 75-00-3). More information is available on the information gathering with respect to certain substances under the CMP web page.
Background
At the outset of the third phase of the CMP, four alkyl halides (CAS RNs 74-96-4, 75-00-3, 706-94-5, 156-60-5) were a part of a group of eight substances referred to collectively under the CMP as the Alkyl or Aryl Halides Group. The four 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.