1-Butene
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Names | |||
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IUPAC name
but-1-ene
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Other names
ethylethylene, 1-butylene, α-butylene, but-1-ene
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Identifiers | |||
3D model (JSmol)
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ChEBI | |||
ChEMBL | |||
ChemSpider | |||
ECHA InfoCard | 100.003.137 | ||
PubChem CID
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UNII | |||
CompTox Dashboard (EPA)
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Properties | |||
C4H8 | |||
Molar mass | 56.108 g·mol−1 | ||
Appearance | Colorless Gas | ||
Odor | slightly aromatic | ||
Density | 0.62 g/cm3 | ||
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)
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1.3962 | ||
Viscosity | 7.76 Pa | ||
Hazards | |||
NFPA 704 (fire diamond) | |||
385 °C (725 °F; 658 K) | |||
Explosive limits | 1.6-10% | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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1-Butene is an organic chemical compound, linear alpha-olefin (alkene),[1] and one of the isomers of butene. The formula is CH3CH2CH=CH2. It is a highly flammable, easily condensed gas.
Reactions
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.[2]
Manufacturing
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.[3]
See also
References
- ^ 1-BUTENE
- ^ 1-Butene product overview
- ^ Frank M.A. Geilen, Guido Stochniol, Stephan Peitz and Ekkehard Schulte-Koerne "Butenes" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, 2000. doi:10.1002/14356007.a04_483.pub3