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

For Dieldrin, cas no. is 60-57-1; pel (mg/m³) is 0.25, verified against its source on 2026-08-05.

- **Substance:** Dieldrin
- **CAS No.:** 60-57-1
- **PEL (mg/m³):** 0.25

## What the source says

> Dieldrin | 60-57-1 | - | 0.25 | X |

## 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/).