Proposed Rulemaking: Title 27 California Code of Regulations, Section 25705 No Significant Risk Level for 1-Bromopropane and Diethanolamine (Dermal)

The Office of Environmental Health Hazard Assessment (OEHHA) is proposing a Proposition 65 No Significant Risk Level (NSRL) for diethanolamine by the dermal route and 1-bromopropane in Title 27, California Code of Regulations, section 25705(b)(1).

15-Day Comment Period

OEHHA is opening a 15-day public comment period for comments on proposed modification and addition of documents to the rulemaking file. OEHHA is accepting comments through July 2, 2026.

• Notice of Modification to Proposed Regulation and Addition of Documents to Rulemaking
• Attachment 1: Modified Regulatory Text – No Significant Risk Level: Diethanolamine (dermal)

Extension of Public Comment Period

At the request of the Personal Care Products Council, OEHHA hereby extends the public comment period. The comment period will now close on Thursday, July 2, 2026.

Public Comments

All written comments will be posted on the OEHHA website at the close of the public comment period. Please see the Notice of Modification for further information.

OEHHA strongly recommends that the public submit written information electronically, rather than in paper form. Comments may be submitted electronically through our website. For instructions about other methods of submitting comments, please see the Notice of Modification linked above.

Original Proposed Rulemaking

OEHHA first proposed the NSRL for 1-bromopropane and diethanolamine (dermal) on August 22, 2025. OEHHA provided a 45-day comment period on the original proposal, from August 22 to October 6, 2025. At the request of the Personal Care Products Council, OEHHA extended the public comment period to Friday, November 7, 2025.

• Extension Notice
• Notice
• Initial Statement of Reasons
• Proposed Regulatory Text