Ethylene – Specialty Gas
Ethylene plays a vital role in the petrochemical sector. It is used as a precursor for a variety of chemicals and plastics.
Ethylene is used to produce synthetic fibres such as polyester and polyethene terephthalate (PET).
Ethylene serves as a starting material for the synthesis of various chemical intermediates.
| Gas | Ethylene | Chemical Formula | C2H4 | |
| Einecs: | 200-815-3 | Molecular Weight: | 28.054 | |
| CAS: | 74-85-1 | Flammability range in air, [% volume]: | 2.7-36.0 | |
| Boiling Point: | at 1.013 bar [℃] | -103.68 | at 14.5 psi, [℉] | -154.60 |
| Density: | at 1.013 bar,15℃, [kg/m³] | 1.194 | at 1 atm., 70℉, [lb/ft³] | 0.073 |
Ethylene Supplier
DSW supplies ethylene in various purities and concentrations. Package options range from small cylinders to bulk ISO containers for your convenience.
Process
Ethylene is produced by passing ethyl alcohol vapors over dehydrating catalysts at 360-470 °C. The pyrolysis of ethane may also produce it.
The 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 producing 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 gas is used as a component in calibration gases for the automotive, gas, oil, and chemical industries.
C2H4 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, using a mixture of ethene in nitrogen in this application is strongly recommended.
C2H4 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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