2,2-dimethylbutane
Structural formula | ||||||||||||||||
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General | ||||||||||||||||
Surname | 2,2-dimethylbutane | |||||||||||||||
other names |
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Molecular formula | C 6 H 14 | |||||||||||||||
Brief description |
very volatile, colorless liquid with a phenol-like odor |
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External identifiers / databases | ||||||||||||||||
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properties | ||||||||||||||||
Molar mass | 86.18 g mol −1 | |||||||||||||||
Physical state |
liquid |
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density |
0.65 g cm −3 |
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Melting point |
−100 ° C |
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boiling point |
50 ° C |
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Vapor pressure |
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solubility |
practically insoluble in water (24 mg l −1 at 25 ° C) |
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Refractive index |
1.369 (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 |
2,2-Dimethylbutane is a chemical compound from the group of aliphatic saturated hydrocarbons . It is one of the five structural isomers of hexane . Like neopentane, it has a quaternary carbon atom.
Extraction and presentation
2,2-dimethylbutane can be obtained by hydroisomerization of 2,3-dimethylbutane of a in the presence of catalyst are obtained.
properties
2,2-Dimethylbutane is a very volatile, colorless liquid with a phenol-like odor, which is practically insoluble in water.
Safety-related parameters
2,2-Dimethylbutane forms highly flammable vapor-air mixtures. The compound has a flash point of −48 ° C. The explosion range is between 1.2% by volume (40 g / m 3 ) as the lower explosion limit (LEL) and 7% by volume (260 g / m 3 ) as the upper explosion limit (UEL). The minimum ignition energy was determined to be 0.25 mJ. The ignition temperature is 435 ° C. The substance therefore falls into temperature class T2.
use
2-Dimethylbutane is found in car and aircraft fuels to increase the octane number .
Individual evidence
- ↑ a b c d e f g h i j k l m n o p q Entry on 2,2-dimethylbutane in the GESTIS substance database of the IFA , accessed on April 11, 2018(JavaScript required) .
- ↑ Data sheet 2,2-Dimethylbutane, ≥99.0% (GC) from Sigma-Aldrich , accessed on October 12, 2011 ( PDF ).
- ^ Entry on 2,2-Dimethylbutane in the Hazardous Substances Data Bank , accessed April 20, 2016.
- ^ A b E. Brandes, W. Möller: Safety-related parameters - Volume 1: Flammable liquids and gases , Wirtschaftsverlag NW - Verlag für neue Wissenschaft GmbH, Bremerhaven 2003.