# Ethyl sec-amyl ketone; 5-methyl-3-heptanone — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For Ethyl sec-amyl ketone; 5-methyl-3-heptanone, pel (ppm) is 25; pel (mg/m³) is 130, verified against its source on 2026-08-05.

- **Substance:** Ethyl sec-amyl ketone; 5-methyl-3-heptanone
- **PEL (ppm):** 25
- **PEL (mg/m³):** 130

## What the source says

> 541855 | | Ethyl sec-amyl ketone; 5-methyl-3-heptanone | 25 | 130

## Source

- https://www.dir.ca.gov/title8/5155.html

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/).