Reference Source

n-Heptane

For n-Heptane, pel (ppm) is 400; pel (mg/m³) is 1,600; stel (ppm) is 500; stel (mg/m³) is 2000, verified against its source on 2026-08-05.

Substance
n-Heptane
PEL (ppm)
400
PEL (mg/m³)
1,600
STEL (ppm)
500
STEL (mg/m³)
2000
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

142825 | | n-Heptane | 400 | 1,600 | | 500 | 2000

— 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.