o-Methylcyclohexanone — workplace exposure limit
What is the pel (ppm) for o-Methylcyclohexanone — workplace exposure limit?
For o-Methylcyclohexanone, pel (ppm) is 100; pel (mg/m³) is 460; cas no. is 583-60-8, verified against its source on 2026-08-05.
o-Methylcyclohexanone | 583-60-8 | 100 | 460 | X |
— osha.gov, retrieved 2026-08-05
- Substance
- o-Methylcyclohexanone verified
- CAS No.
- 583-60-8 verified
- PEL (ppm)
- 100 verified
- PEL (mg/m³)
- 460 verified
- STEL (ppm)
- 75 per dir.ca.gov
- STEL (mg/m³)
- 345 per dir.ca.gov
- NIOSH REL (ppm)
- TWA 50 per cdc.gov
- NIOSH REL (mg/m³)
- 230 per cdc.gov
What cdc.gov says
NIOSH REL TWA 50 ppm (230 mg/m3) ST 75 ppm (345 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 100, as of 2026-08-05.
o-Methylcyclohexanone | 583-60-8 | 100 | 460 | X |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (ppm) is 50, as of 2026-08-05.
583608 | S | o-Methylcyclohexanone | 50 | 230 | | 75 | 345
https://www.dir.ca.gov/title8/5155.html
PEL (mg/m³)
osha.gov says pel (mg/m³) is 460, as of 2026-08-05.
o-Methylcyclohexanone | 583-60-8 | 100 | 460 | X |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (mg/m³) is 230, as of 2026-08-05.
583608 | S | o-Methylcyclohexanone | 50 | 230 | | 75 | 345
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/npgd0408.html