# Methacrylic acid — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Methacrylic acid, pel (ppm) is 20; pel (mg/m³) is 70, verified against its source on 2026-08-05.

- **Substance:** Methacrylic acid
- **PEL (ppm):** 20
- **PEL (mg/m³):** 70

## What the source says

> 79414 | S | Methacrylic acid | 20 | 70

## 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/).