# Chloroprene; 2-chloro-1,3-butadiene — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Chloroprene; 2-chloro-1,3-butadiene, pel (ppm) is 10; pel (mg/m³) is 36, verified against its source on 2026-08-05.

- **Substance:** Chloroprene; 2-chloro-1,3-butadiene
- **PEL (ppm):** 10
- **PEL (mg/m³):** 36

## What the source says

> 126998 | S | Chloroprene; 2-chloro-1,3-butadiene | 10 | 36

## Source

- https://www.dir.ca.gov/title8/5155.html

Last verified: 2026-08-05. Review by: 2027-08-05.
Part of [US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side](https://referencesource.org/workplace-exposure-limits/).