tris(1,3-dichloro-2-propyl) phosphate (TDCPP) Listed Effective October 28, 2011 as Known to the State to Cause Cancer

Effective October 28, 2011, the Office of Environmental Health Hazard Assessment (OEHHA) is adding tris(1,3-dichloro-2-propyl) phosphate (TDCPP) (CAS No. 13674-87-8) 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)¹.

Tris(1,3-dichloro-2-propyl) phosphate (TDCPP) was considered by the Carcinogen Identification Committee (CIC) in its official capacity as the “state’s qualified experts” at a public meeting held on October 12, 2011.  The CIC determined that tris(1,3-dichloro-2-propyl) phosphate (TDCPP) was clearly shown, through scientifically valid testing according to generally accepted principles, to cause cancer.  Regulations governing the criteria for listing of chemicals by the CIC are set out in Title 27, California Code of Regulations, section 25305(a)(1). 

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

In summary, the following chemical is being listed under Proposition 65 as known to the State to cause cancer:

Comment Period

• Comment Period - Request for Information on the Carcinogenic Hazards of: Clomiphene and its salts, 2,6-Dimethyl-N-nitrosomorpholine, Haloperidol, Tris(1,3-dichloro-2-propyl) phosphate (TDCPP)
• Comment Period - Hazard Identification Materials for Fluoride and Its Salts, and Tris(1,3-Dichloro-2-Propyl) Phosphate
• Carcinogen Identification Committee Meeting Scheduled for October 12 and 13, 2011

Downloads

Initial Statement of Reasons - Title 27 Section 25705(b) No Significant Risk Level Tris(1,3-dichloro-2-propyl) Phosphate (TDCPP)
Jun 1, 2012

Chemical Reference

• Tris(1,3-dichloro-2-propyl) Phosphate (TDCPP)

Meeting Announcements/Information

• Carcinogen Identification Committee Meeting Scheduled for October 12 and 13, 2011

Related Notices

• Request for Information on the Carcinogenic Hazards of: Clomiphene and its salts, 2,6-Dimethyl-N-nitrosomorpholine, Haloperidol, Tris(1,3-dichloro-2-propyl) phosphate (TDCPP)

  Feb 11, 2011
• Hazard Identification Materials for Fluoride and Its Salts, and Tris(1,3-Dichloro-2-Propyl) Phosphate and Carcinogen Identification Committee Meeting October 12th and 13th, 2011

  Jul 8, 2011
• tris(1,3-dichloro-2-propyl) phosphate (TDCPP) Listed Effective October 28, 2011 as Known to the State to Cause Cancer

  Oct 28, 2011
• Notice of Proposed Rulemaking Title 27, California Code of Regulations Amendment to Section 25705 Specific Regulatory Levels Posing No Significant Risk: Tris(1,3-Dichloro-2-Propyl) Phosphate (TDCPP)

  Jun 1, 2012
• Amendment to Section 25705(b) No Significant Risk Level (NSRL) for Tris(1,3-Dichloro-2-Propyl) Phosphate (TDCPP)

  Oct 9, 2012

Footnotes and References

¹Health and Safety Code, section 25249.5 et seq.

²Listing mechanism: SQE – "state's qualified experts" mechanism (Title 27 Cal. Code of Regs., section 25305(a)(1)).