# Butadiene (1,3-Butadiene); See 29 CFR 1910.1051; 29 CFR 1910.19(l) — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Butadiene (1,3-Butadiene); See 29 CFR 1910.1051; 29 CFR 1910.19(l), cas no. is 106-99-0; pel (ppm) is 1 ppm/5 ppm STEL, verified against its source on 2026-08-05.

- **Substance:** Butadiene (1,3-Butadiene); See 29 CFR 1910.1051; 29 CFR 1910.19(l)
- **CAS No.:** 106-99-0
- **PEL (ppm):** 1 ppm/5 ppm STEL

## What the source says

> Butadiene (1,3-Butadiene); See 29 CFR 1910.1051; 29 CFR 1910.19(l) | 106-99-0 | 1 ppm/5 ppm STEL | - | - |

## Source

- https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1

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/).