Osmium tetroxide, as Os

For Osmium tetroxide, as Os, pel (ppm) is 0.0002; pel (mg/m³) is 0.002; stel (ppm) is 0.0006; stel (mg/m³) is 0.006, verified against its source on 2026-08-05.

Substance: Osmium tetroxide, as Os
PEL (ppm): 0.0002
PEL (mg/m³): 0.002
STEL (ppm): 0.0006
STEL (mg/m³): 0.006

Sourcedir.ca.gov

Verified2026-08-05

Review by2027-08-05

DatasetUS workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

What the source says

20816120 | | Osmium tetroxide, as Os | 0.0002 | 0.002 | | 0.0006 | 0.006

— dir.ca.gov, retrieved 2026-08-05

Source

dir.ca.govhttps://www.dir.ca.gov/title8/5155.html

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