1,3-dichloro-2-propanol (1,3-DCP) and 3-monochloropropane-1,2-diol (3-MCPD) Listed October 8, 2010 as Known to the State to Cause Cancer
The Office of Environmental Health Hazard Assessment (OEHHA) is adding two chemicals 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 chemicals are 1,3-dichloro-2-propanol (1,3-DCP) (CAS No. 96-23-1) and 3-monochloropropane-1,2-diol (3-MCPD) (CAS No. 96-24-2). The two chemicals are listed effective October 8, 2010.
1,3-Dichloro-2-propanol (1,3-DCP) (CAS No. 96-23-1) and 3-monochloropropane-1,2-diol (3-MCPD) (CAS No. 96-24-2) were considered by the Carcinogen Identification Committee (CIC) in its official capacity as the “state’s qualified experts” at a public meeting held on September 21, 2010. The CIC determined that 1,3-DCP and 3-MCPD were 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 and is available on the OEHHA website.
In summary, the following chemicals are being listed under Proposition 65 as known to the State to cause cancer
| Chemical | CAS No. | Toxicological Endpoints | Listing Mechanism |
|---|---|---|---|
| 1,3-Dichloro-2-propanol (1,3-DCP) | 96-23-1 | cancer | SQE |
| 3-Monochloropropane-1,2-diol (3-MCPD) | 96-24-2 | cancer | SQE |
Listing mechanism:
SQE – “state’s qualified experts” mechanism (Title 27 Cal. Code of Regs., section 25305(a)(1)).
- 1,3-Dichloro-2-propanol (1,3-DCP)
- 3-Monochloropropane-1,2-diol (3-MCPD)
Chemical Reference
- September 21 and 22, 2010 Meeting of the Carcinogen Identification Committee