Reference Source

Trimellitic anhydride

For Trimellitic anhydride, pel (ppm) is 0.005; pel (mg/m³) is 0.04; ceiling is C, verified against its source on 2026-08-05.

Substance
Trimellitic anhydride
PEL (ppm)
0.005
PEL (mg/m³)
0.04
Ceiling
C
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

552307 | | Trimellitic anhydride | 0.005 | 0.04 | C

— 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.