Reference Source

Acetylene — workplace exposure limit

What is the cas no. for Acetylene — workplace exposure limit?

For Acetylene, cas no. is 74862, verified against its source on 2026-08-05.

74862 | | Acetylene | (h)

— dir.ca.gov, retrieved 2026-08-05

Substance
Acetylene verified
CAS No.
74862 verified
NIOSH REL (ppm)
C 2500 per cdc.gov
NIOSH REL (mg/m³)
2662 per cdc.gov
Sourcedir.ca.gov
Verified
Review by
DatasetUS workplace chemical exposure limits: federal OSHA, Cal/OSHA and NIOSH, side by side

What cdc.gov says

NIOSH REL C 2500 ppm (2662 mg/m3)

— cdc.gov, retrieved 2026-09-08

Sources

Last verified against source: . Due for re-check by . This page as Markdown · OKF bundle · full dataset as JSON.

What is the OSHA exposure limit for this substance?Find the exposure limit for a substance in workplace air — federal OSHA, California and NIOSH, side by side.

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