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

For Caprolactam dust, pel (mg/m³) is 1; stel (mg/m³) is 3, verified against its source on 2026-08-05.

- **Substance:** Caprolactam dust
- **PEL (mg/m³):** 1
- **STEL (mg/m³):** 3

## What the source says

> 105602 | | Caprolactam dust | -- | 1 | | -- | 3

## 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/).