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IUPAC name
Other names
ethylethylene, 1-butylene, α-butylene, but-1-ene
106-98-9 YesY
ChEBI CHEBI:48362 YesY
ChEMBL ChEMBL117210 YesY
ChemSpider 7556 YesY
Jmol 3D model Interactive image
Interactive image
PubChem 7844
UNII LY001N554L YesY
Molar mass 56.11 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
Viscosity 7.76 Pa
NFPA 704
Flammability code 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., propane Health code 1: Exposure would cause irritation but only minor residual injury. E.g., turpentine Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored 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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Infobox references

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.


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]


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[edit]


  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

External links[edit]