Plaster of Paris — workplace exposure limit

What cdc.gov says

NIOSH REL TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)

— cdc.gov, retrieved 2026-09-08

What dir.ca.gov says

26499650 | | Plaster of Paris; calcium sulfate hemihydrate; see Particulates not otherwise regulated

— dir.ca.gov, retrieved 2026-08-05

Sources

• osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
• cdc.govhttps://www.cdc.gov/niosh/npg/npgd0518.html
• dir.ca.govhttps://www.dir.ca.gov/title8/5155.html

Last verified against source: 2026-08-05. Due for re-check by 2027-08-05. This page as Markdown · OKF bundle · full dataset as JSON.