5-Methyl-3-heptanone — workplace exposure limit
What is the niosh rel (ppm) for 5-Methyl-3-heptanone — workplace exposure limit?
For 5-Methyl-3-heptanone, niosh rel (ppm) is TWA 25; niosh rel (mg/m³) is 130; cas no. is 541-85-5, verified against its source on 2026-09-08.
NIOSH REL TWA 25 ppm (130 mg/m3)
— cdc.gov, retrieved 2026-09-08
- Substance
- 5-Methyl-3-heptanone verified
- CAS No.
- 541-85-5 verified
- NIOSH REL (ppm)
- TWA 25 verified
- NIOSH REL (mg/m³)
- 130 verified
- PEL (ppm)
- 25 per osha.gov
- PEL (mg/m³)
- 130 per osha.gov
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 - 5-Methyl-3-heptanone
CAS No.
CAS No. 541-85-5
— all from cdc.gov, retrieved 2026-09-08
What osha.gov says
Ethyl amyl ketone (5-Methyl-3-heptanone) | 541-85-5 | 25 | 130 | - |
— osha.gov, retrieved 2026-08-05
What dir.ca.gov says
541855 | | Ethyl sec-amyl ketone; 5-methyl-3-heptanone | 25 | 130
— dir.ca.gov, retrieved 2026-08-05
Sources
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0418.html
- osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html