1-Butene

1-Butene (or 1-Butylene) is an organic chemical compound, linear alpha-olefin (alkene),[2] and one of the isomers of butene (butylene). The formula is CH3CH2CH=CH2. It is a colorless flammable, easily condensed gas.

1-Butene
Names
Preferred IUPAC name
But-1-ene[1]
Other names
Ethylethylene
1-Butylene
α-Butylene
Identifiers
3D model (JSmol)
1098262
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.003.137
EC Number
  • 203-449-2
25205
UNII
UN number 1012
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
GHS pictograms
GHS Signal word Danger
GHS hazard statements
 H220, H221, H280
P210, P377, P381, P403, P410+403
NFPA 704 (fire diamond)
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. propaneHealth code 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineReactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
4
1
0
Flash point −79 °C; −110 °F; 194 K
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 YN ?)
Infobox references

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).[3] It has also been used as a precursor to polypropylene resins, butylene oxide, and butanone.[4]

Manufacturing

1-Butene is produced by separation from crude C4 refinery streams and by ethylene dimerization. The former affords a mixture of 1-and 2-butenes, while the latter affords only the terminal alkene.[5] It is distilled to give a very high purity product. An estimated 12 billion kilograms were produced in 2011.[6]

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See also

References
  1. Nomenclature of Organic Chemistry : IUPAC Recommendations and Preferred Names 2013 (Blue Book). Cambridge: The Royal Society of Chemistry. 2014. pp. 17, 61, 374. doi:10.1039/9781849733069-FP001. ISBN 978-0-85404-182-4.
  2. "1-BUTENE". chemicalland21.com. Retrieved 22 April 2018.
  3. Chum, P. Steve; Swogger, Kurt W. (2008). "Olefin polymer technologies—History and Recent Progress at the Dow Chemical Company". Progress in Polymer Science. 33 (8): 797–819. doi:10.1016/j.progpolymsci.2008.05.003.
  4. "1-Butene product overview". shell.com. Archived from the original on 2012-02-10. Retrieved 22 April 2018.
  5. "Alphabutol process - Big Chemical Encyclopedia". chempedia.info. Archived from the original on 2017-12-08. Retrieved 22 April 2018.
  6. Geilen, Frank M.A.; Stochniol, Guido; Peitz, Stephan; Schulte-Koerne, Ekkehard (2014). "Butenes". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a04_483.pub3.
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