Cyclohexanone — workplace exposure limit
What is the pel (ppm) for Cyclohexanone — workplace exposure limit?
For Cyclohexanone, pel (ppm) is 50; pel (mg/m³) is 200; cas no. is 108-94-1, verified against its source on 2026-08-05.
Cyclohexanone | 108-94-1 | 50 | 200 | - |
— osha.gov, retrieved 2026-08-05
- Substance
- Cyclohexanone verified
- CAS No.
- 108-94-1 verified
- PEL (ppm)
- 50 verified
- PEL (mg/m³)
- 200 verified
- NIOSH REL (ppm)
- TWA 25 per cdc.gov
- NIOSH REL (mg/m³)
- 100 per cdc.gov
What cdc.gov says
NIOSH REL TWA 25 ppm (100 mg/m3) [skin]
— cdc.gov, retrieved 2026-09-08
Sources disagree
More than one authority states this, and they do not state the same thing. Both are reproduced with the source each came from — deciding between them is yours, not ours.
PEL (ppm)
osha.gov says pel (ppm) is 50, as of 2026-08-05.
Cyclohexanone | 108-94-1 | 50 | 200 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (ppm) is 25, as of 2026-08-05.
108941 | S | Cyclohexanone | 25 | 100
https://www.dir.ca.gov/title8/5155.html
PEL (mg/m³)
osha.gov says pel (mg/m³) is 200, as of 2026-08-05.
Cyclohexanone | 108-94-1 | 50 | 200 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (mg/m³) is 100, as of 2026-08-05.
108941 | S | Cyclohexanone | 25 | 100
Sources
- osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0166.html