---
type: threshold
id: butane
asset: workplace-exposure-limits
title: "Butane — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "106978 | | Butane | 800 | 1,900"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Butane"
pel_ppm: "800"
pel_mgm3: "1,900"
verified: true
---
**Substance:** Butane

**PEL (ppm):** 800

**PEL (mg/m³):** 1,900

> 106978 | | Butane | 800 | 1,900

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