Chloroform (Trichloromethane) — workplace exposure limit
What is the pel (ppm) for Chloroform (Trichloromethane) — workplace exposure limit?
For Chloroform (Trichloromethane), pel (ppm) is (C)50; pel (mg/m³) is (C)240; cas no. is 67-66-3, verified against its source on 2026-08-05.
Chloroform (Trichloromethane) | 67-66-3 | (C)50 | (C)240 | - |
— osha.gov, retrieved 2026-08-05
(C)50
The most of this substance workplace air may legally contain, averaged over an 8-hour shift — OSHA's permissible exposure limit (PEL), in parts per million, from the agency's own table row quoted below. Where federal OSHA and Cal/OSHA disagree, both limits are stated, each with its own agency's table row as evidence. NIOSH's number, where there is one, is shown separately: it is a recommended limit, not a legal one, and it is often the strictest of the three.
- Substance
- Chloroform (Trichloromethane) verified
- CAS No.
- 67-66-3 verified
- PEL (ppm)
- (C)50 verified
- PEL (mg/m³)
- (C)240 verified
Source
- osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1