Inorganic substances identified as being of low concern

These substances were identified for action under the Chemicals Management Plan (CMP). This draft screening assessment incorporates results from the science approach documents for the ecological risk classification of inorganic substances (ERC-I), biomonitoring-based approach 1, biomonitoring-based approach 2, and substances with low human health hazard potential.

Summary of publications
Public comments on the draft screening assessment Final screening assessment Conclusion on section 64 criteria Follow-up activities
HTML HTML Do not meet Information gathering for silicone carbide (CAS RN 409-21-2)

Follow-up activities

Although silicon carbide (CAS RN 409-21-2), molybdenum oxide (CAS RN 1313-27-5), and beryllium (CAS RN7440-41-7) are not considered harmful to human health at levels of exposure considered in the assessment, these substances are considered to have health effects of concern based upon their potential carcinogenicity. Therefore, there may be a potential risk if exposures were to increase.

For this reason, the Government will undertake information gathering activities to track changes in exposure and use patterns for silicone carbide. Follow-up activities are not being considered at this time for molybdenum oxide and beryllium as an analysis of information on current and future uses suggests that it is unlikely that exposure will increase to levels of concern to human health.

Date Activity
November 14, 2020 Publication of the final screening assessment. The related notice was published in the Canada Gazette, Part I: Vol. 154, No. 46.
April 13, 2019 Publication and start of 60-day public comment period on the draft screening assessment (including follow-up activities for silicon carbide, molybdenum oxide, and beryllium). The related notice was published in the Canada Gazette, Part I: Vol. 153, No. 15.
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