2-bromopentane
Structural formula | |||||||||||||
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Simplified structural formula without stereochemistry | |||||||||||||
General | |||||||||||||
Surname | 2-bromopentane | ||||||||||||
other names |
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Molecular formula | C 5 H 11 Br | ||||||||||||
Brief description |
colorless to yellowish liquid |
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External identifiers / databases | |||||||||||||
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properties | |||||||||||||
Molar mass | 151.04 g mol −1 | ||||||||||||
Physical state |
liquid |
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density |
1.21 g cm −3 (20 ° C) |
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Melting point |
−95 ° C |
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boiling point |
117 ° C |
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Vapor pressure |
105 hPa (50 ° C) |
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solubility |
practically insoluble in water (0.231 g l −1 at 25 ° C) |
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Refractive index |
1.441 (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 |
2-Bromopentane is a chemical compound from the group of halogenated hydrocarbons , more precisely the bromoalkanes .
Isomers
2-bromopentane occurs in two stereoisomeric forms, ( R ) -2-bromopentane and ( S ) -2-bromopentane. Whenever “2-bromopentane” is mentioned in the scientific literature or in this article without any further addition, one always means the racemate , i.e. ( RS ) - (±) -2-bromopentane, a 1: 1 mixture of ( R ) - and ( S ) -2-bromopentane.
Extraction and presentation
2-Bromopentane is produced by the reaction of 2-pentanol with hydrogen bromide .
properties
2-bromopentane is a colorless to yellowish liquid that is practically insoluble in water. It forms highly flammable vapor-air mixtures. The compound has a flash point at 20 ° C.
Web links
- Entry to pentanes, 2-bromo . 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 November 24, 2019.
Individual evidence
- ↑ a b c d e f g h i j Entry on 2-bromopentane in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .
- ↑ Data sheet 2-bromopentane from Sigma-Aldrich , accessed on November 23, 2019 ( PDF ).
- ↑ BA Howell, RE Kohrman: Preparation of 2-bromopentane , J. Chem. Educ. 1984, 61, 10, 932-934; doi: 10.1021 / ed061p932 .