Ethylene thiourea

This substance was identified for action under the Chemicals Management Plan (CMP).

Information Sheet

Summary of publications

CAS RN Common name (acronym) DSL name Final screening assessment Conclusion on section 64 criteria Follow-up activities
96-45-7 Ethylene thiourea (ETU) 2-Imidazolidinethione HTML Does not meet Under consideration

Follow-up activities

Although a risk to human health or the environment has not been identified at current levels of exposure, there may be a concern if exposure to ETU were to increase. For this reason, the Government may consider this substance in future information gathering initiatives, to track changes in exposure or use patterns.




January 14, 2023

Publication of the final screening assessment. The related notice was published in the Canada Gazette, Part I: Vol. 157, No. 2.


ETU was originally included in the Draft Screening Assessment for the Heterocycles Group. To better align with the re-evaluation of certain pesticides, it was removed from the Heterocycles Group and has been assessed separately.

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