Thioglycolic acid — workplace exposure limit
What is the pel (ppm) for Thioglycolic acid — workplace exposure limit?
For Thioglycolic acid, pel (ppm) is 1; pel (mg/m³) is 3.8; cas no. is 68111, verified against its source on 2026-08-05.
68111 | S | Thioglycolic acid | 1 | 3.8
— dir.ca.gov, retrieved 2026-08-05
1
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
- Thioglycolic acid verified
- CAS No.
- 68111 verified
- PEL (ppm)
- 1 verified
- PEL (mg/m³)
- 3.8 verified
- NIOSH REL (ppm)
- TWA 1 per cdc.gov
- NIOSH REL (mg/m³)
- 4 per cdc.gov
What cdc.gov says
NIOSH REL TWA 1 ppm (4 mg/m3) [skin]
— cdc.gov, retrieved 2026-09-08
Sources
- dir.ca.govhttps://www.dir.ca.gov/title8/5155.html
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0610.html