2-Butanone — workplace exposure limit
What is the niosh rel (ppm) for 2-Butanone — workplace exposure limit?
For 2-Butanone, niosh rel (ppm) is TWA 200; niosh rel (mg/m³) is 590; cas no. is 78-93-3, verified against its source on 2026-09-08.
NIOSH REL TWA 200 ppm (590 mg/m3) ST 300 ppm (885 mg/m3)
— cdc.gov, retrieved 2026-09-08
- Substance
- 2-Butanone verified
- CAS No.
- 78-93-3 verified
- NIOSH REL (ppm)
- TWA 200 verified
- NIOSH REL (mg/m³)
- 590 verified
Where each value comes from
This source states these in separate places, so each value is shown with the passage that states it.
Substance
CDC - NIOSH Pocket Guide to Chemical Hazards - 2-Butanone
CAS No.
CAS No. 78-93-3
— all from cdc.gov, retrieved 2026-09-08
Source
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0069.html