1,4-cineole
Structural formula | ||||||||||||||||
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General | ||||||||||||||||
Surname | 1,4-cineole | |||||||||||||||
other names |
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Molecular formula | C 10 H 18 O | |||||||||||||||
Brief description |
colorless liquid with a slight smell of camphor |
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properties | ||||||||||||||||
Molar mass | 154.25 g mol −1 | |||||||||||||||
Physical state |
liquid |
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density |
0.887 g cm −3 (25 ° C) |
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Melting point |
−46 ° C |
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boiling point |
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solubility |
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Refractive index |
1.445 (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 |
1,4-Cineol is a chemical compound from the group of the bicyclic epoxy monoterpenes .
Occurrence
1,4-cineole occurs naturally in apricots , orange and grapefruit juice, lime oil, wine, cocoa , rosemary , cubeb pepper and other natural products.
Extraction and presentation
1,4-Cineol can be obtained as a mixture with 1,8-Cineol by reacting isoprene with sulfuric acid at 30 ° C. It can also be represented by gradual reduction of ascaridol .
properties
1,4-Cineol is a colorless liquid with a slight smell of camphor , which is practically insoluble in water.
use
1,4-cineole is used as a flavoring agent.
Individual evidence
- ↑ a b c d George A. Burdock: Encyclopedia of Food and Color Additives . CRC Press, 1997, ISBN 978-0-8493-9412-6 , pp. 590 ( limited preview in Google Book search).
- ↑ a b c d e f g Data sheet 1,4-Cineol, ≥85% from Sigma-Aldrich , accessed on September 5, 2015 ( PDF ).
- ^ S. Huneck, Joachim Thiem: RÖMPP Lexikon Naturstoffe, 1st edition, 1997 . Georg Thieme Verlag, 2014, ISBN 3-13-179291-4 , p. 136 ( limited preview in Google Book search).
- ↑ a b c d George A. Burdock: Fenaroli's Handbook of Flavor Ingredients, Sixth Edition . CRC Press, 2009, ISBN 978-1-4200-9086-4 , pp. 292 ( limited preview in Google Book search).
- ↑ John ApSimon: The Total Synthesis of Natural Products . John Wiley & Sons, 2009, ISBN 0-470-12951-4 , pp. 134 ( limited preview in Google Book search).
- ↑ Günther Ohloff: Fragrances and olfactory sense The molecular world of fragrances . Springer-Verlag, 2013, ISBN 978-3-662-09768-7 , pp. 223 ( limited preview in Google Book search).