# Phorate; o,o-diethyl S-(ethylthio)methyl phosphorodithioate — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Phorate; o,o-diethyl S-(ethylthio)methyl phosphorodithioate, pel (mg/m³) is 0.05; stel (mg/m³) is 0.2, verified against its source on 2026-08-05.

- **Substance:** Phorate; o,o-diethyl S-(ethylthio)methyl phosphorodithioate
- **PEL (mg/m³):** 0.05
- **STEL (mg/m³):** 0.2

## What the source says

> 298022 | S | Phorate; o,o-diethyl S-(ethylthio)methyl phosphorodithioate | -- | 0.05 | | -- | 0.2

## 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/).