---
type: threshold
id: methyl-ethyl-ketone-peroxide
asset: workplace-exposure-limits
title: "Methyl ethyl ketone peroxide — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "1338234 | | Methyl ethyl ketone peroxide | 0.2 | 1.5 | C"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Methyl ethyl ketone peroxide"
pel_ppm: "0.2"
pel_mgm3: "1.5"
ceiling: "C"
verified: true
---
**Substance:** Methyl ethyl ketone peroxide

**PEL (ppm):** 0.2

**PEL (mg/m³):** 1.5

**Ceiling:** C

> 1338234 | | Methyl ethyl ketone peroxide | 0.2 | 1.5 | C

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