# Methyl methacrylate; methyl 2-methyl-2-propenoate — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Methyl methacrylate; methyl 2-methyl-2-propenoate, pel (ppm) is 50; pel (mg/m³) is 205; stel (ppm) is 100; stel (mg/m³) is 410, verified against its source on 2026-08-05.

- **Substance:** Methyl methacrylate; methyl 2-methyl-2-propenoate
- **PEL (ppm):** 50
- **PEL (mg/m³):** 205
- **STEL (ppm):** 100
- **STEL (mg/m³):** 410

## What the source says

> 80626 | | Methyl methacrylate; methyl 2-methyl-2-propenoate | 50 | 205 | | 100 | 410

## 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/).