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 highly flammable, easily condensed gas.

1-Butene
Names
Preferred IUPAC name
But-1-ene[1]
Other names
Ethylethylene
1-Butylene
α-Butylene
Identifiers
CAS Number
3D model (JSmol)
Beilstein Reference
 1098262
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.003.137
EC Number
  • 203-449-2
Gmelin Reference
 25205
PubChem CID
UNII
UN number 1012
CompTox Dashboard (EPA)
Properties
Chemical formula
 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)
Solubility in water
 0.221 g/100 mL
Solubility soluble in alcohol, ether, benzene
Refractive index (nD)
 1.3962
Viscosity 7.76 Pa
Hazards
GHS pictograms
GHS Signal word Danger
GHS hazard statements
 H220, H221, H280
GHS precautionary statements
 P210, P377, P381, P403, P410+403
NFPA 704 (fire diamond)
4
1
0
Flash point −79 °C; −110 °F; 194 K
Autoignition
temperature
 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). It has also been used as a precursor to polypropylene resins, butylene oxide, and butanone.[3]

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.[4] It is distilled to give a very high-purity product. An estimated 12 billion kilograms were produced in 2011.[5]

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. "1-Butene product overview". shell.com. Archived from the original on 2012-02-10. Retrieved 22 April 2018.
  4. "Alphabutol process - Big Chemical Encyclopedia". chempedia.info. Archived from the original on 2017-12-08. Retrieved 22 April 2018.
  5. 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.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.