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1-Butene

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1-Butene
Names
IUPAC name
but-1-ene
Other names
ethylethylene, 1-butylene, α-butylene, but-1-ene
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.003.137 Edit this at Wikidata
UNII
  • InChI=1S/C4H8/c1-3-4-2/h3H,1,4H2,2H3 checkY
    Key: VXNZUUAINFGPBY-UHFFFAOYSA-N checkY
  • InChI=1/C4H8/c1-3-4-2/h3H,1,4H2,2H3
    Key: VXNZUUAINFGPBY-UHFFFAOYAZ
  • C=CCC
  • CCC=C
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
1.3962
Viscosity 7.76 Pa
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 4: Will rapidly or completely vaporize at normal atmospheric pressure and temperature, or is readily dispersed in air and will burn readily. Flash point below 23 °C (73 °F). E.g. propaneInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
1
4
0
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).
☒N verify (what is checkY☒N ?)

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. ^ 1-BUTENE
  2. ^ 1-Butene product overview
  3. ^ 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
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