---
type: threshold
id: ethyl-amyl-ketone-5-methyl-3-heptanone
asset: workplace-exposure-limits
title: "Ethyl amyl ketone (5-Methyl-3-heptanone) — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
source_quote: "Ethyl amyl ketone (5-Methyl-3-heptanone) | 541-85-5 | 25 | 130 | - |"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Ethyl amyl ketone (5-Methyl-3-heptanone)"
cas_number: "541-85-5"
pel_ppm: "25"
pel_mgm3: "130"
verified: true
---
**Substance:** Ethyl amyl ketone (5-Methyl-3-heptanone)

**CAS No.:** 541-85-5

**PEL (ppm):** 25

**PEL (mg/m³):** 130

> Ethyl amyl ketone (5-Methyl-3-heptanone) | 541-85-5 | 25 | 130 | - |

Source: <https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1>