| IUPAC name
| Systematic IUPAC name
|Molar mass||28.05 g/mol|
|Density||1.178 kg/m3 (15 °C)|
|Melting point||−169.2 °C (−272.6 °F; 104.0 K)|
|Boiling point||−103.7 °C (−154.7 °F; 169.5 K)|
|Solubility||Soluble in acetone, benzene, diethyl ether|
|Solubility in ethanol||4.22 mg/L|
|Vapor pressure||5.21·104 mmHg (25 °C)|
Std enthalpy of
|Safety data sheet||Praxair|
|Flash point||−136 °C (−213 °F; 137 K)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Ethylene or ethene is a hydrocarbon which has the formula C2H4 or H2C=CH2. It is the simplest alkene.
Ethylene is extremely flammable and will burn in an oxygen atmosphere.
- C2H4 + 3 O2 → 2 CO2 + 2 H2O
Hydration of ethene yields ethanol.
Oxidation with peracids gives ethylene oxide.
Ethylene is a colorless gas at standard conditions, lighter than air, with a sweet odor and taste.
Ethylene is sold by gas companies in gas cylinders, as compressed gas.
- CH3CH2OH → : C2H4 + H2O
Destructive distillation of HDPE will produce lots of alkanes and alkenes, including ethylene.
- Make ethylbenzene
- Make ethylene oxide
- Make polyethylene
- Plant hormone for the ripening of fruits
Ethylene is very flammable and mixtures with air can be explosive. High concentrations in closed chambers pose an asphyxiating hazard, though being lighter than air, ethylene will not build-up in closed chambers easily.
Ethylene has anesthetic effects at high concentrations.
Ethylene tanks must be kept in a cold place, away from light, heat, and corrosive vapors.
Ethylene can be burned or released in the air.