Calcium hydroxide — workplace exposure limit

What dir.ca.gov says

1305620 | | Calcium hydroxide | -- | 5

— dir.ca.gov, retrieved 2026-08-05

What cdc.gov says

NIOSH REL TWA 5 mg/m3

— cdc.gov, retrieved 2026-09-08

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/npgd0092.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.