1,2,3-Trichloropropane — workplace exposure limit
What is the pel (ppm) for 1,2,3-Trichloropropane — workplace exposure limit?
For 1,2,3-Trichloropropane, pel (ppm) is 50; pel (mg/m³) is 300; cas no. is 96-18-4, verified against its source on 2026-08-05.
1,2,3-Trichloropropane | 96-18-4 | 50 | 300 | - |
— osha.gov, retrieved 2026-08-05
- Substance
- 1,2,3-Trichloropropane verified
- CAS No.
- 96-18-4 verified
- PEL (ppm)
- 50 verified
- PEL (mg/m³)
- 300 verified
- NIOSH REL (ppm)
- TWA 10 per cdc.gov
- NIOSH REL (mg/m³)
- 60 per cdc.gov
What cdc.gov says
NIOSH REL Ca TWA 10 ppm (60 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 50, as of 2026-08-05.
1,2,3-Trichloropropane | 96-18-4 | 50 | 300 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (ppm) is 10, as of 2026-08-05.
96184 | | 1,2,3-Trichloropropane | 10 | 60
https://www.dir.ca.gov/title8/5155.html
PEL (mg/m³)
osha.gov says pel (mg/m³) is 300, as of 2026-08-05.
1,2,3-Trichloropropane | 96-18-4 | 50 | 300 | - |
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.gov says pel (mg/m³) is 60, as of 2026-08-05.
96184 | | 1,2,3-Trichloropropane | 10 | 60
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/npgd0631.html