ethylethylene, 1-butylene, α-butylene, but-1-ene
|Jmol 3D model||Interactive image
|Molar mass||56.11 g·mol−1|
|Melting point||−185.3 °C (−301.5 °F; 87.8 K)|
|Boiling point||−6.47 °C (20.35 °F; 266.68 K)|
|0.221 g/100 mL|
|Solubility||soluble in alcohol, ether, benzene|
Refractive index (nD)
|385 °C (725 °F; 658 K)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
1-Butene is stable in itself but polymerizes readily to polybutene. Its main application is as a comonomer in the production of certain kinds of polyethylene, such as linear low-density polyethylene (LLDPE). It has also been used as a precursor to polypropylene resins, butylene oxide, and butanone.
1-Butene is produced either by separation from crude C4 refinery streams or from the dimerization of ethylene. It is distilled to give a very high-purity product. An estimated 12 billion kilograms were produced in 2011, usually as a mixture with isomeric butenes.