---
type: threshold
id: ethyl-butyl-ketone-3-heptanone-2
asset: workplace-exposure-limits
title: "Ethyl butyl ketone; 3-heptanone — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "106354 | | Ethyl butyl ketone; 3-heptanone | 50 | 230 | | 75 | 345"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Ethyl butyl ketone; 3-heptanone"
pel_ppm: "50"
pel_mgm3: "230"
stel_ppm: "75"
stel_mgm3: "345"
verified: true
---
**Substance:** Ethyl butyl ketone; 3-heptanone

**PEL (ppm):** 50

**PEL (mg/m³):** 230

**STEL (ppm):** 75

**STEL (mg/m³):** 345

> 106354 | | Ethyl butyl ketone; 3-heptanone | 50 | 230 | | 75 | 345

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