Polymerization of ethyne (acetylene)
When ethyne (acetylene) is passed through a red hot copper tube, it polymerises to benzene.
Uses of ethyne
Ethyne is used
- as the fuel for the oxyacetylene blow-lamp used in cutting and welding metals.
- to prepare ethanal (i.e. acetaldehyde), and
- many important organic chemicals, including vinyl chloride monomer, which is used in the manufacture of the industrially important plastic polyvinyl chloride, PVC.