# p-Dichlorobenzene; 1,4-dichlorobenzene — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For p-Dichlorobenzene; 1,4-dichlorobenzene, pel (ppm) is 10; pel (mg/m³) is 60; ceiling is 200 ppm; stel (ppm) is 110; stel (mg/m³) is 675, verified against its source on 2026-08-05.

- **Substance:** p-Dichlorobenzene; 1,4-dichlorobenzene
- **PEL (ppm):** 10
- **PEL (mg/m³):** 60
- **Ceiling:** 200 ppm
- **STEL (ppm):** 110
- **STEL (mg/m³):** 675

## What the source says

> 106467 | | p-Dichlorobenzene; 1,4-dichlorobenzene | 10 | 60 | 200 ppm | 110 | 675

## 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/).