Reference Source

Methyl acetylene; propyne

For Methyl acetylene; propyne, pel (ppm) is 1,000; pel (mg/m³) is 1,650, verified against its source on 2026-08-05.

Substance
Methyl acetylene; propyne
PEL (ppm)
1,000
PEL (mg/m³)
1,650
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

74997 | | Methyl acetylene; propyne | 1,000 | 1,650

— 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.