---
type: threshold
id: methylal-dimethoxy-methane
asset: workplace-exposure-limits
title: "Methylal (Dimethoxy-methane) — 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: "Methylal (Dimethoxy-methane) | 109-87-5 | 1000 | 3100 | - |"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Methylal (Dimethoxy-methane)"
cas_number: "109-87-5"
pel_ppm: "1000"
pel_mgm3: "3100"
verified: true
---
**Substance:** Methylal (Dimethoxy-methane)

**CAS No.:** 109-87-5

**PEL (ppm):** 1000

**PEL (mg/m³):** 3100

> Methylal (Dimethoxy-methane) | 109-87-5 | 1000 | 3100 | - |

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