1,2-pentadiene
Structural formula | ||||||||||||||||
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General | ||||||||||||||||
Surname | 1,2-pentadiene | |||||||||||||||
other names |
Ethylallene |
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Molecular formula | C 5 H 8 | |||||||||||||||
Brief description |
colorless liquid |
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External identifiers / databases | ||||||||||||||||
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properties | ||||||||||||||||
Molar mass | 68.12 g mol −1 | |||||||||||||||
Physical state |
liquid |
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density |
0.7 g cm −3 |
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Melting point |
−137 ° C |
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boiling point |
45 ° C |
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solubility |
miscible with ethanol and acetone |
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Refractive index |
1.4170–1.4210 (at 20 ° C) |
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safety instructions | ||||||||||||||||
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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 |
1,2-pentadiene is a chemical compound from the group of unsaturated aliphatic hydrocarbons .
Extraction and presentation
1,2-Pentadiene can be obtained by reacting 1-pentyne or 2-pentyne with potassium hydroxide at 175 ° C.
properties
1,2-pentadiene is a colorless clear liquid.
Individual evidence
- ↑ a b c d e f g h Entry on 1,2-pentadiene at TCI Europe, accessed on April 29, 2015.
- ^ A b William M. Haynes: CRC Handbook of Chemistry and Physics, 93rd Edition . CRC Press, 2012, ISBN 978-1-4398-8049-4 , pp. 3–436 ( limited preview in Google Book search).
- ↑ A. Stephen, K. Hashmi: Synthesis of Allenes by Isomerization Reactions, page 6 , Modern Allene Chemistry. Edited by N. Krause and ASK Hashmi, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 2004, ISBN 3-527-30671-4 .