# Ethyl amyl ketone (5-Methyl-3-heptanone) — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Ethyl amyl ketone (5-Methyl-3-heptanone), cas no. is 541-85-5; pel (ppm) is 25; pel (mg/m³) is 130, verified against its source on 2026-08-05.

- **Substance:** Ethyl amyl ketone (5-Methyl-3-heptanone)
- **CAS No.:** 541-85-5
- **PEL (ppm):** 25
- **PEL (mg/m³):** 130

## What the source says

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

## Source

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

Last verified: 2026-08-05. Review by: 2027-08-05.
Part of [US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side](https://referencesource.org/workplace-exposure-limits/).