# Carbon tetrabromide — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Carbon tetrabromide, pel (ppm) is 0.1; pel (mg/m³) is 1.4; stel (ppm) is 0.3; stel (mg/m³) is 4, verified against its source on 2026-08-05.

- **Substance:** Carbon tetrabromide
- **PEL (ppm):** 0.1
- **PEL (mg/m³):** 1.4
- **STEL (ppm):** 0.3
- **STEL (mg/m³):** 4

## What the source says

> 558134 | | Carbon tetrabromide | 0.1 | 1.4 | | 0.3 | 4

## 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/).