Ethylene C2H4 Gas

Process

Ethylene is produced by passing ethyl alcohol vapours over dehydrating catalysts at 360-470 °C. It may also be produced by the pyrolysis of ethane.
Cracking of petroleum is another source.

Applications

Ethylene is the starting material for several industrial syntheses. It is employed as an intermediate in the chemical industry and for the production of plastics.
Ethylene C2H4 Gas is employed for the production of:
acetaldehyde
acetic acid
chloroethane
chloroethene (vinyl chloride)
dichloroethane
1,1-dichloroethene (vinylidene chloride)
epoxyethane (ethylene oxide)
ethanediol (ethylene glycol)
ethanol
ethoxyethane
ethylbenzene
phenylethene (styrene)
polychloroethene (polyvinyl chloride)
polyethene
propanoic acid
tetraethyl lead
trichloroethane

Ethylene is used as a component in calibration gases for the automotive, gas, oil as well as chemical industry.

Ethylene may be employed for welding and cutting, but is not used for this purpose industrially.
Ethylene supplied in cylinders is used for controlled ripening of fruit, especially bananas. A concentration of a few ppm in the warehouse atmosphere is used. Because of flammability considerations, it is strongly recommended to use a mixture of ethene in nitrogen in this application
Ethylene has also been used in agriculture to promote crop growth: in this case the gas is injected directly into the soil.
Ethylene is still used as an anaesthetic (in the US).
It is used as a refrigerant especially in the petrochemical industry. It has the ASHRAE number R-1150.

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