1,4-pentadiene
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| General | ||||||||||||||||
| Surname | 1,4-pentadiene | |||||||||||||||
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| Molecular formula | C 5 H 8 | |||||||||||||||
| Brief description |
colorless liquid |
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| properties | ||||||||||||||||
| Molar mass | 68.12 g mol −1 | |||||||||||||||
| Physical state |
liquid |
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| density |
0.66 g cm −3 |
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| Melting point |
−148 ° C |
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| boiling point |
26 ° C |
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| Vapor pressure |
812 mbar (20 ° C) |
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| solubility |
very sparingly soluble in water (0.558 g l −1 at 25 ° C) |
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| Refractive index |
1.389 (20 ° C) |
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| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C | ||||||||||||||||
1,4-pentadiene is an unsaturated chemical compound from the group of aliphatic hydrocarbons .
Extraction and presentation
1,4-Pentadiene can be obtained by decomposing 1,5-pentanediol diacetate or by reacting α-allyl-β-bromoethyl ethyl ether with zinc and zinc chloride in butyl alcohol .
properties
1,4-pentadiene is a very volatile, colorless liquid that is very sparingly soluble in water.
use
1,4-pentadiene can be used to make other chemical compounds such as 2,4-dichloropentane or poly-1,4-pentadiene .
safety instructions
1,4-pentadiene is an extremely flammable liquid. Their vapors form explosive mixtures with air ( flash point −20 ° C).
Web links
- Entry to 1,4-pentadiene . In: P. J. Linstrom, W. G. Mallard (Eds.): NIST Chemistry WebBook, NIST Standard Reference Database Number 69 . National Institute of Standards and Technology , Gaithersburg MD, accessed October 14, 2012.
Individual evidence
- ↑ a b c d e f g h i j k Entry for CAS no. 591-93-5 in the GESTIS substance database of the IFA , accessed on October 14, 2012(JavaScript required) .
- ↑ Data sheet 1,4-pentadiene, 99% from Sigma-Aldrich , accessed on October 14, 2012 ( PDF ).
- ^ RE Benson, BC McKusick: 1,4-Pentadiene In: Organic Syntheses . 38, 1958, p. 78, doi : 10.15227 / orgsyn.038.0078 ; Coll. Vol. 4, 1963, p. 746 ( PDF ).
- ↑ John E. McMurry: Organic Chemistry . Cengage Learning, 2011, ISBN 0-8400-5444-0 , pp. 505 ( limited preview in Google Book search).
- ^ Mariette M. Pereira, Joaquim Faria: Catalysis from Theory to Application: An Integrated Course . Imprensa da Univ. de Coimbra, 2008, ISBN 989-8074-35-3 , p. 392 ( limited preview in Google Book search).