Acetylene - C2H2
Acetylene also known as Ethyne, is the simplest of alkynes. It is a colourless and odourless gas that is used as fuel, for chemical building block and for welding.
Acetylene was discovered in 1836 by Edmund Davy.
Properties
Molecular weight 26.04 g/mol
Gaseous phase Gas density: 1.097 kg/m3
Solid phase Melting point: -80.08 °C