Pentane
For Pentane, cas no. is 109-66-0; pel (ppm) is 1000; pel (mg/m³) is 2950, verified against its source on 2026-08-05.
- Substance
- Pentane
- CAS No.
- 109-66-0
- PEL (ppm)
- 1000
- PEL (mg/m³)
- 2950
What the source says
Pentane | 109-66-0 | 1000 | 2950 | - |
— osha.gov, retrieved 2026-08-05
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 1000, as of 2026-08-05.
Pentane | 109-66-0 | 1000 | 2950 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (ppm) is 600, as of 2026-08-05.
109660 | | Pentane | 600 | 1,800
https://www.dir.ca.gov/title8/5155.html
PEL (mg/m³)
osha.gov says pel (mg/m³) is 2950, as of 2026-08-05.
Pentane | 109-66-0 | 1000 | 2950 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (mg/m³) is 1,800, as of 2026-08-05.
109660 | | Pentane | 600 | 1,800
Sources
- osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html