The Office of Environmental Health Hazard Assessment (OEHHA) is adding one chemical to the list of chemicals known to the State to cause cancer for purposes of the Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65). The chemical is spirodiclofen (CAS No. 148477-71-8). Spirodiclofen is listed effective October 8, 2010.

Spirodiclofen (CAS No. 148477-71-8) is being listed as a chemical known to the State of California to cause cancer. The listing of spirodiclofen is based on its formal identification by an authoritative body (the U.S. Environmental Protection Agency (U.S. EPA)), as a chemical causes cancer.

A complete, updated chemical list is published in this issue of the California Regulatory Notice Register and is available on the OEHHA website at

Click on the links for more information.

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