Methyl acetylene — workplace exposure limit
What is the niosh rel (ppm) for Methyl acetylene — workplace exposure limit?
For Methyl acetylene, niosh rel (ppm) is TWA 1000; niosh rel (mg/m³) is 1650; cas no. is 74-99-7, verified against its source on 2026-09-08.
NIOSH REL TWA 1000 ppm (1650 mg/m3)
— cdc.gov, retrieved 2026-09-08
- Substance
- Methyl acetylene verified
- CAS No.
- 74-99-7 verified
- NIOSH REL (ppm)
- TWA 1000 verified
- NIOSH REL (mg/m³)
- 1650 verified
Where each value comes from
This source states these in separate places, so each value is shown with the passage that states it.
Substance
CDC - NIOSH Pocket Guide to Chemical Hazards - Methyl acetylene
CAS No.
CAS No. 74-99-7
— all from cdc.gov, retrieved 2026-09-08
Source
- cdc.govhttps://www.cdc.gov/niosh/npg/npgd0392.html