Reference Source

Maleic anhydride

For Maleic anhydride, cas no. is 108-31-6; pel (ppm) is 0.25; pel (mg/m³) is 1, verified against its source on 2026-08-05.

Substance
Maleic anhydride
CAS No.
108-31-6
PEL (ppm)
0.25
PEL (mg/m³)
1
Sourceosha.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

Maleic anhydride | 108-31-6 | 0.25 | 1 | - |

— osha.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.