---
type: threshold
id: phorate-o-o-diethyl-s-ethylthio-methyl-phosphorodithioate
asset: workplace-exposure-limits
title: "Phorate; o,o-diethyl S-(ethylthio)methyl phosphorodithioate — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "298022 | S | Phorate; o,o-diethyl S-(ethylthio)methyl phosphorodithioate | -- | 0.05 | | -- | 0.2"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Phorate; o,o-diethyl S-(ethylthio)methyl phosphorodithioate"
pel_mgm3: "0.05"
stel_mgm3: "0.2"
verified: true
---
**Substance:** Phorate; o,o-diethyl S-(ethylthio)methyl phosphorodithioate

**PEL (mg/m³):** 0.05

**STEL (mg/m³):** 0.2

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

Source: <https://www.dir.ca.gov/title8/5155.html>