Arenes Group

These substances were identified for action under the Chemicals Management Plan (CMP). This screening assessment focuses on 2 of 9 substances referred to collectively as the Arenes Group.

Information sheet

Summary of publications
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. 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.

Date Activity
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.


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 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 Screening Assessment for the Rapid Screening of Substances with Limited General Population Exposure.

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