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

For Phosphorus, yellow, pel (mg/m³) is 0.1, verified against its source on 2026-08-05.

- **Substance:** Phosphorus, yellow
- **PEL (mg/m³):** 0.1

## What the source says

> 7723140 | | Phosphorus, yellow | -- | 0.1

## 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/).