---
type: threshold
id: diazinon-o-o-diethyl-o-2-isopropyl-6-methyl-4-pyrimidinyl-phosphorothioate
asset: workplace-exposure-limits
title: "Diazinon; o,o-diethyl o-(2-isopropyl-6-methyl-4-pyrimidinyl) phosphorothioate — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "333415 | S | Diazinon; o,o-diethyl o-(2-isopropyl-6-methyl-4-pyrimidinyl) phosphorothioate | -- | 0.1"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Diazinon; o,o-diethyl o-(2-isopropyl-6-methyl-4-pyrimidinyl) phosphorothioate"
pel_mgm3: "0.1"
verified: true
---
**Substance:** Diazinon; o,o-diethyl o-(2-isopropyl-6-methyl-4-pyrimidinyl) phosphorothioate

**PEL (mg/m³):** 0.1

> 333415 | S | Diazinon; o,o-diethyl o-(2-isopropyl-6-methyl-4-pyrimidinyl) phosphorothioate | -- | 0.1

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