---
type: threshold
id: cyclopentane
asset: workplace-exposure-limits
title: "Cyclopentane — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "287923 | | Cyclopentane | 600 | 1,720"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Cyclopentane"
pel_ppm: "600"
pel_mgm3: "1,720"
verified: true
---
**Substance:** Cyclopentane

**PEL (ppm):** 600

**PEL (mg/m³):** 1,720

> 287923 | | Cyclopentane | 600 | 1,720

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