# Temephos; o,o,o′ ,o′-tetramethyl o,o′-thiodi-p-phenylene phosphorothioate Total dust — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Temephos; o,o,o′ ,o′-tetramethyl o,o′-thiodi-p-phenylene phosphorothioate Total dust, pel (mg/m³) is 10, verified against its source on 2026-08-05.

- **Substance:** Temephos; o,o,o′ ,o′-tetramethyl o,o′-thiodi-p-phenylene phosphorothioate Total dust
- **PEL (mg/m³):** 10

## What the source says

> 3383968 | | Temephos; o,o,o′ ,o′-tetramethyl o,o′-thiodi-p-phenylene phosphorothioate Total dust | -- | 10

## 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/).