---
type: threshold
id: propyne-see-methylacetylene
asset: workplace-exposure-limits
title: "Propyne; see Methylacetylene — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side"
sources:
  - https://www.dir.ca.gov/title8/5155.html
source_quote: "74997 | | Propyne; see Methylacetylene"
generated: true
harvested: 2026-08-05
stale_after: 2027-08-05
substance: "Propyne; see Methylacetylene"
verified: true
---
**Substance:** Propyne; see Methylacetylene

> 74997 | | Propyne; see Methylacetylene

Source: <https://www.dir.ca.gov/title8/5155.html>