Methyl n-amyl ketone — workplace exposure limit
What is the pel (ppm) for Methyl n-amyl ketone — workplace exposure limit?
For Methyl n-amyl ketone, pel (ppm) is 100; pel (mg/m³) is 465; cas no. is 110-43-0, verified against its source on 2026-08-05.
Methyl n-amyl ketone | 110-43-0 | 100 | 465 | - |
— osha.gov, retrieved 2026-08-05
- Substance
- Methyl n-amyl ketone verified
- CAS No.
- 110-43-0 verified
- PEL (ppm)
- 100 verified
- PEL (mg/m³)
- 465 verified
- NIOSH REL (ppm)
- TWA 100 per cdc.gov
- NIOSH REL (mg/m³)
- 465 per cdc.gov
What cdc.gov says
NIOSH REL TWA 100 ppm (465 mg/m3)
— 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.
Methyl n-amyl ketone | 110-43-0 | 100 | 465 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (ppm) is 50, as of 2026-08-05.
110430 | | Methyl n-amyl ketone; 2-heptanone | 50 | 235
https://www.dir.ca.gov/title8/5155.html
PEL (mg/m³)
osha.gov says pel (mg/m³) is 465, as of 2026-08-05.
Methyl n-amyl ketone | 110-43-0 | 100 | 465 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (mg/m³) is 235, as of 2026-08-05.
110430 | | Methyl n-amyl ketone; 2-heptanone | 50 | 235
Sources
- osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0399.html
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html