Reference Source

o-Chlorostyrene

For o-Chlorostyrene, pel (ppm) is 50; pel (mg/m³) is 285; stel (ppm) is 75; stel (mg/m³) is 428, verified against its source on 2026-08-05.

Substance
o-Chlorostyrene
PEL (ppm)
50
PEL (mg/m³)
285
STEL (ppm)
75
STEL (mg/m³)
428
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

2039874 | | o-Chlorostyrene | 50 | 285 | | 75 | 428

— dir.ca.gov, retrieved 2026-08-05

Source

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.