Reference Source

2-Butanone (Methyl ethyl ketone)

For 2-Butanone (Methyl ethyl ketone), cas no. is 78-93-3; pel (ppm) is 200; pel (mg/m³) is 590, verified against its source on 2026-08-05.

Substance
2-Butanone (Methyl ethyl ketone)
CAS No.
78-93-3
PEL (ppm)
200
PEL (mg/m³)
590
Sourceosha.gov
Verified2026-08-05
Review by2027-08-05
DatasetUS workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

What the source says

2-Butanone (Methyl ethyl ketone) | 78-93-3 | 200 | 590 | - |

— osha.gov, retrieved 2026-08-05

Source

Last verified against source: 2026-08-05. Scheduled for re-check by: 2027-08-05. This page as Markdown · OKF concept · full dataset as JSON.