Chemical Listed Effective July 15, 2003 as Known to the State of California to Cause Cancer: Catechol

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The Office of Environmental Health Hazard Assessment (OEHHA) of the California Environmental Protection Agency is adding catechol 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 listing of catechol is effective July 15, 2003.

The listing of catechol (CAS No. 120-80-9) is based on a formal identification by an authoritative body (i.e., the International Agency for Research on Cancer ["IARC"]) that this chemical causes cancer. Regulations governing the listing of chemicals under the "authoritative bodies" mechanism are published in Title 22, California Code of Regulations, Section 12306. The reader is directed to the Notice of Intent to List catechol published in the May 16, 2003, issue of the California Regulatory Notice Register (Register 03, No. 20-Z) for the documentation supporting OEHHA's determination that the criteria for administrative listing have been satisfied for this chemical.

A complete, updated Proposition 65 list is published elsewhere in this issue of the California Regulatory Notice Register. The following table outlines the addition of catechol to the Proposition 65 chemical list as known to the State to cause cancer:

Chemical CAS No. Toxicological Endpoint Listing Mechanism*
Catechol 120-80-9 Cancer AB

*Listing mechanism: AB - "authoritative body" mechanism (22 CCR Section 12306)