# Nickel metal, as Ni — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Nickel metal, as Ni, pel (mg/m³) is 0.5, verified against its source on 2026-08-05.

- **Substance:** Nickel metal, as Ni
- **PEL (mg/m³):** 0.5

## What the source says

> 7440020 | | Nickel metal, as Ni | -- | 0.5

## 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/).