Arenes Group
These substances were identified for action under the Chemicals Management Plan (CMP). This screening assessment focuses on 2 substances referred to collectively under the CMP as the Arenes Group.
Information sheet
| Substance group | CAS RN | Common name | DSL name | Public comments on the draft screening assessment | Final screening assessment | Conclusion on section 64 criteria | Follow-up activities |
|---|---|---|---|---|---|---|---|
| Arenes Group | 98-82-8 | Cumene; isopropylbenzene | Benzene, (1-methylethyl)- | HTML | HTML | Does not meet | Information gathering |
| 57-97-6 | 7, 12- dimethylbenz[a]anthracene (DMBA) | Benz[a]anthracene, 7, 12-dimethyl- |
Follow-up activities
Although these substances are not considered to be harmful to human health or the environment at current levels of exposure, they are considered to have potential human health effects of concern. Therefore, there may be a concern for human health if exposure to these substances were to increase. Follow-up activities will track changes in exposure and/or commercial use patterns, and will include indoor air monitoring via indoor air studies, continued monitoring via the National Pollutants Release Inventory (NPRI), and/or the use of information gathering mechanisms, such as those outlined in the Canadian Environmental Protection Act, 1999 (CEPA 1999). Stakeholders will be given advanced notice of any planned information gathering. If new information becomes available it will be considered through the identification of risk assessment priorities (IRAP) process.
Information gathering
Section 71 CMP 2023
In June 2023, a notice was published in the Canada Gazette, Part I: Vol. 157, No. 25 – June 24, 2023 under section 71 of CEPA 1999. This notice applies to cumene (CAS RN 98-82-8) and DMBA (CAS RN 57-97-6. More information is available on the Information gathering with respect to certain substances under the Chemicals Management Plan web page.
| Date | Activity |
|---|---|
| June 24, 2023 | Publication in Canada Gazette, Part I, of a notice under section 71 of CEPA 1999. |
| March 9, 2019 | Publication of the final screening assessment. The related notice was published in the Canada Gazette, Part I: Vol. 153, No. 10. |
| July 22, 2017 | Publication and start of 60-day public comment period on the draft screening assessment (including follow-up activities for cumene and DMBA). The related notice was published in the Canada Gazette, Part I: Vol. 151, No. 29. |
Background
Seven other substances were identified as being part of the Arenes Group at the outset of the third phase of the CMP. These substances were subsequently determined to be of low concern to both human health and the environment, through other approaches. Conclusions for CAS RNs 632-51-9, 29036-02-0, 38640-62-9, 64800-83-5 and 68398-19-6 are 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. Conclusions for CAS RNs 68953-80-0 and 68987-42-8 are provided in the Final Screening Assessment for the Rapid Screening of Substances with Limited General Population Exposure.
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