1-pentene
 1-Pentene
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cis-2-Pentene
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trans-2-Pentene
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3D model (Jmol)
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| ChemSpider | |
| ECHA InfoCard | 100.042.636 |
| EC Number | 246-916-6 (1-pentene) 273-308-8 (cis-2-pentene) |
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PubChem CID
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| Properties | |
| C5H10 | |
| Molar mass | 70.14 g·mol−1 |
| Density | 0.64 g/cm3 (1-pentene) |
| Melting point | −165.2 °C (−265.4 °F; 108.0 K) (1-pentene) |
| Boiling point | 30 °C (86 °F; 303 K) (1-pentene) |
| -53.7·10−6 cm3/mol | |
| Hazards | |
| Safety data sheet | MSDS |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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 (what is   ?) |
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| Infobox references | |
273-308-8 (cis-2-pentene)
271-255-5 (trans-2-pentene)
Pentenes are alkenes with chemical formula C
5H
10. Each contains one double bond within its molecular structure. There are a total of six different compounds in this class, differing from each other by whether the carbon atoms are attached linearly or in a branched structure, and whether the double bond has a cis or trans form.
1-Pentene is an alpha-olefin. Most often 1-pentene is made as a byproduct of catalytic or thermal cracking of petroleum, or during production of ethylene and propylene via thermal cracking of hydrocarbon fractions. It is rarely isolated as a separate compound. Instead, it is most often blended into gasoline or, in a mixture with other hydrocarbons, alkylated with isobutane to make gasoline.
The only commercial manufacturer of 1-pentene is Sasol Ltd, where it is separated from crude made by the Fischer-Tropsch process.
2-Pentene has two geometric isomers, cis-2-pentene and trans-2-pentene. cis-2-Pentene is used in olefin metathesis.
Alternative names for 1-pentene include amylene, n-amylene, and n-pentene. Alternative names for 2-pentene include beta-n-amylene and sym-methylethylethylene.
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Wikipedia