# Methyl hydrazine; monomethyl hydrazine — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Methyl hydrazine; monomethyl hydrazine, pel (ppm) is 0.01; pel (mg/m³) is 0.019, verified against its source on 2026-08-05.

- **Substance:** Methyl hydrazine; monomethyl hydrazine
- **PEL (ppm):** 0.01
- **PEL (mg/m³):** 0.019

## What the source says

> 60344 | S | Methyl hydrazine; monomethyl hydrazine | 0.01 | 0.019

## 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/).