---
type: threshold
id: 1-4-diethylene-dioxide-see-p-dioxane
asset: workplace-exposure-limits
title: "1,4-Diethylene dioxide; see p-Dioxane — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "123911 | | 1,4-Diethylene dioxide; see p-Dioxane"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "1,4-Diethylene dioxide; see p-Dioxane"
verified: true
---
**Substance:** 1,4-Diethylene dioxide; see p-Dioxane

> 123911 | | 1,4-Diethylene dioxide; see p-Dioxane

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