Chemical Listed Effective March 27, 2015 as Known to the State of California to Cause Cancer: Beta-Myrcene

Effective March 27, 2015,the Office of Environmental Health Hazard Assessment (OEHHA) is adding beta-myrcene(CAS No. 123-35-3)to the list of chemicals known to the state to cause cancer for purposes of Proposition 65¹.

The listing of beta-myrceneis based on formal identification by the National Toxicology Program (NTP), an authoritative body², 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 27, Cal. Code of Regs., section 25306.

The documentation supporting OEHHA’s determination that the criteria for administrative listing have been satisfied for beta-myrcene is included in the “Notice of Intent to List beta-Myrcene” posted on OEHHA’s website and published in the February 7, 2014 issue of the California Regulatory Notice Register (Register 2014, No. 6-Z). The publication of the notice initiated a public comment period that closed on March 24, 2014. OEHHA received three public comments. Those comments and OEHHA’s responses are posted on our website.

In summary, beta-myrcene is listed under Proposition 65 as known to the state to cause cancer, as follows:

Chemical Reference

• beta-Myrcene

Related Notices

• Request for Information on Chemicals Being Considered for Listing: Isopyrazam, Beta-Myrcene, Pulegone, and 3,3',4,4'-Tetrachloroazobenzene

  Feb 10, 2012
• Notice of Intent to List: Beta-Myrcene

  Feb 7, 2014

Footnotes and References

*Listing mechanism: AB – “authoritative bodies” mechanism (Title 27, Cal. Code of Regs. section 25306).

^.1 The Safe Drinking Water and Toxic Enforcement Act of 1986, Health and Safety Code section 25249.5 et seq.

² See Health and Safety Code section 25249.8(b) and Title 27, Cal. Code of Regs., section 25306.