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Methyl acetylene

Methyl acetylene

description
Methyl acetylene (C3H4, 1-propyne) is a colorless, non-toxic, flammable gas at room temperature and atmospheric pressure. It is transported as a liquefied gas under its vapor pressure.

specification
purity,% 97
Liquid phase (Wt. %)
Propane < 0.2
Butane < 0.5
Propadiene < 0.3
Isobutylene < 0.7
Acetonitrile < 0.1
Quinol < 0.01
2,6-di-tert-butyl-4-methyl < 0.01
Phenol (BHT)

transport
DOT shipping name Methyl acetylene
DOT classification 2.1
DOT tag Compressible gas, flammable
UN NO. UN1954
CAS NO. 74-99-7
CGA/BS341/DIN477 510/NO.4/NO.1

Technical Information
Cylinder condition @ 21.1°C  gas
Burning limit in the air 1.7-39.9%
Auto-ignition temperature ( °C )
Molecular weight ( g / mol ) 40.065
Specific gravity (air =1) 1.383
Critical temperature ( °C ) 129.24
Critical pressure ( psig ) 801.57

application
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