The Office of Environmental Health Hazard Assessment (OEHHA) of the California Environmental Protection Agency is adding iprovalicarb (CAS No. 140923-17-7 and 140923-25-7) 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 (Health and Safety Code section 25249.5 et seq., commonly known as Proposition 65 ). The listing of iprovalicarb is effective June 1, 2007.

Iprovalicarb (CAS No. 140923-17-7 and 140923-25-7) is being listed as a chemical known to the State of California to cause cancer. The listing of this chemical is based on formal identification by an authoritative body (i.e., the U.S. Environmental Protection Agency (“U.S. EPA”), that the chemical causes cancer. The criteria used by OEHHA for the listing of chemicals under the “authoritative bodies” mechanism can be found in Title 22, Cal. Code of Regs., section 12306.

The reader is directed to the Notice of Intent to List Iprovalicarb (CAS No. 140923-17-7 and 140923-25-7) published in the November 25, 2005 issue of the California Regulatory Notice Register (Register 2005, No. 47 Z) for the documentation supporting OEHHA’s determination that the criteria for administrative listing have been satisfied for this chemical.

OEHHA analysis of dose-response data to establish the no significant risk level (NSRL) for iprovalicarb (CAS No. 140923-17-7 and 140923-25-7) under Proposition 65 has not yet been conducted. The priority status for the development of such analysis will be announced in a future OEHHA Proposition 65 Status Report for Safe Harbor Levels, available at http://www.oehha.ca.gov/prop65.html.

A complete, updated Proposition 65 list is published elsewhere in this issue of the California Regulatory Notice Register.

¹Listing mechanism: AB – “authoritative bodies” mechanism (Title 22, Cal. Code of Regs. section 12306)
Health and Safety Code section 25249.5 et seq.

Download a copy of this notice here.

Download the June 1, 2007 list sorted alphabetically as a PDF file here.

If you would like to sort the list by CAS number or date, please download the June 1, 2007 list as a Excel, hyphenated and with the associated Safe Harbor Levels here. You can then sort the list by date, CAS number or chemical name using MS Excel.

You will need the free program Adobe Acrobat Reader to view or print PDF files

For questions regarding Proposition 65, please contact the Cynthia Oshita in the Proposition 65 Implementation Program

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