# Biphenyl; diphenyl; phenylbenzene — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Biphenyl; diphenyl; phenylbenzene, pel (ppm) is 0.2; pel (mg/m³) is 1.5, verified against its source on 2026-08-05.

- **Substance:** Biphenyl; diphenyl; phenylbenzene
- **PEL (ppm):** 0.2
- **PEL (mg/m³):** 1.5

## What the source says

> 92524 | | Biphenyl; diphenyl; phenylbenzene | 0.2 | 1.5

## 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/).