# Methylal (Dimethoxy-methane) — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Methylal (Dimethoxy-methane), cas no. is 109-87-5; pel (ppm) is 1000; pel (mg/m³) is 3100, verified against its source on 2026-08-05.

- **Substance:** Methylal (Dimethoxy-methane)
- **CAS No.:** 109-87-5
- **PEL (ppm):** 1000
- **PEL (mg/m³):** 3100

## What the source says

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

## Source

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

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/).