---
type: threshold
id: perfluoroisobutylene
asset: workplace-exposure-limits
title: "Perfluoroisobutylene — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "382218 | | Perfluoroisobutylene | 0.01 | 0.082 | C"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Perfluoroisobutylene"
pel_ppm: "0.01"
pel_mgm3: "0.082"
ceiling: "C"
verified: true
---
**Substance:** Perfluoroisobutylene

**PEL (ppm):** 0.01

**PEL (mg/m³):** 0.082

**Ceiling:** C

> 382218 | | Perfluoroisobutylene | 0.01 | 0.082 | C

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