# 2-Pentanone (Methyl propyl ketone) — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For 2-Pentanone (Methyl propyl ketone), cas no. is 107-87-9; pel (ppm) is 200; pel (mg/m³) is 700, verified against its source on 2026-08-05.

- **Substance:** 2-Pentanone (Methyl propyl ketone)
- **CAS No.:** 107-87-9
- **PEL (ppm):** 200
- **PEL (mg/m³):** 700

## What the source says

> 2-Pentanone (Methyl propyl ketone) | 107-87-9 | 200 | 700 | - |

## 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/).