---
type: threshold
id: dioxane-diethylene-dioxide
asset: workplace-exposure-limits
title: "Dioxane (Diethylene dioxide) — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
source_quote: "Dioxane (Diethylene dioxide) | 123-91-1 | 100 | 360 | X |"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Dioxane (Diethylene dioxide)"
cas_number: "123-91-1"
pel_ppm: "100"
pel_mgm3: "360"
verified: true
---
**Substance:** Dioxane (Diethylene dioxide)

**CAS No.:** 123-91-1

**PEL (ppm):** 100

**PEL (mg/m³):** 360

> Dioxane (Diethylene dioxide) | 123-91-1 | 100 | 360 | X |

Source: <https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1>