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

For Nitrogen dioxide, cas no. is 10102-44-0; pel (ppm) is (C)5; pel (mg/m³) is (C)9, verified against its source on 2026-08-05.

- **Substance:** Nitrogen dioxide
- **CAS No.:** 10102-44-0
- **PEL (ppm):** (C)5
- **PEL (mg/m³):** (C)9

## What the source says

> Nitrogen dioxide | 10102-44-0 | (C)5 | (C)9 | - |

## Source

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