---
type: threshold
id: o-sec-butylphenol
asset: workplace-exposure-limits
title: "o-sec-Butylphenol — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "89725 | S | o-sec-Butylphenol | 5 | 30"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "o-sec-Butylphenol"
pel_ppm: "5"
pel_mgm3: "30"
verified: true
---
**Substance:** o-sec-Butylphenol

**PEL (ppm):** 5

**PEL (mg/m³):** 30

> 89725 | S | o-sec-Butylphenol | 5 | 30

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