---
type: threshold
id: methyl-hydrazine-monomethyl-hydrazine-2
asset: workplace-exposure-limits
title: "Methyl hydrazine; monomethyl hydrazine — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "60344 | S | Methyl hydrazine; monomethyl hydrazine | 0.01 | 0.019"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Methyl hydrazine; monomethyl hydrazine"
pel_ppm: "0.01"
pel_mgm3: "0.019"
verified: true
---
**Substance:** Methyl hydrazine; monomethyl hydrazine

**PEL (ppm):** 0.01

**PEL (mg/m³):** 0.019

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

Source: <https://www.dir.ca.gov/title8/5155.html>