# Proposed NSRLs for 1-Bromopropane and Diethanolamine

California Code of Regulations, Title 27, Section 25705 Office of Environmental Health Hazard Assessment (OEHHA) California

Announced

Aug 22, 2025

## Description

OEHHA proposes to adopt No Significant Risk Levels (NSRLs) for 1-bromopropane and diethanolamine (dermal route) by amending Title 27, California Code of Regulations, section 25705(b). Public comment period deadline is October 6, 2025. These safe harbor levels would help businesses determine when Prop 65 warning requirements apply.

## Sources

- Official [Notice of Proposed Rulemaking Amendment to Section 25705](https://oehha.ca.gov/sites/default/files/media/2025-08/Notice%201-BP%20and%20DEA%20NSRLs%20082225.pdf)

## Key Findings

Proposed NSRLs for 1-Bromopropane and Diethanolamine

> ENVIRONMENTAL PROTECTION AGENCY OFFICE OF ENVIRONMENTAL HEALTH HAZARD ASSESSMENT SAFE DRINKING WATER AND TOXIC ENFORCEMENT ACT OF 1986 PROPOSITION 65 NOTICE OF PROPOSED RULEMAKING TITLE 27, CALIFORNIA CODE OF REGULATIONS, DIVISION 4, CHAPTER 1, ARTICLE 7 AMENDMENT TO SECTION 25705(b) SPECIFIC REGULATORY LEVELS POSING NO SIGNIFICANT RISK: 1-BROMOPROPANE AND DIETHANOLAMINE (DERMAL) August 22, 2025 Public Availability D.