Tetranitromethane — workplace exposure limit
What is the pel (ppm) for Tetranitromethane — workplace exposure limit?
For Tetranitromethane, pel (ppm) is 1; pel (mg/m³) is 8; cas no. is 509-14-8, verified against its source on 2026-08-05.
Tetranitromethane | 509-14-8 | 1 | 8 | - |
— osha.gov, retrieved 2026-08-05
- Substance
- Tetranitromethane verified
- CAS No.
- 509-14-8 verified
- PEL (ppm)
- 1 verified
- PEL (mg/m³)
- 8 verified
- NIOSH REL (ppm)
- TWA 1 per cdc.gov
- NIOSH REL (mg/m³)
- 8 per cdc.gov
What cdc.gov says
NIOSH REL TWA 1 ppm (8 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 1, as of 2026-08-05.
Tetranitromethane | 509-14-8 | 1 | 8 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (ppm) is 0.005, as of 2026-08-05.
509148 | | Tetranitromethane | 0.005 | 0.04
https://www.dir.ca.gov/title8/5155.html
PEL (mg/m³)
osha.gov says pel (mg/m³) is 8, as of 2026-08-05.
Tetranitromethane | 509-14-8 | 1 | 8 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (mg/m³) is 0.04, as of 2026-08-05.
509148 | | Tetranitromethane | 0.005 | 0.04
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/npgd0605.html