---
type: threshold
id: methyl-hydrazine-monomethyl-hydrazine
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.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
source_quote: "Methyl hydrazine (Monomethyl hydrazine) | 60-34-4 | (C)0.2 | (C)0.35 | X |"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Methyl hydrazine (Monomethyl hydrazine)"
cas_number: "60-34-4"
pel_ppm: "(C)0.2"
pel_mgm3: "(C)0.35"
verified: true
---
**Substance:** Methyl hydrazine (Monomethyl hydrazine)

**CAS No.:** 60-34-4

**PEL (ppm):** (C)0.2

**PEL (mg/m³):** (C)0.35

> Methyl hydrazine (Monomethyl hydrazine) | 60-34-4 | (C)0.2 | (C)0.35 | X |

Source: <https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1>