Isobutyric anhydride
Structural formula | ||||||||||||||||
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General | ||||||||||||||||
Surname | Isobutyric anhydride | |||||||||||||||
other names |
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Molecular formula | C 8 H 14 O 3 | |||||||||||||||
Brief description |
colorless liquid with a pungent odor |
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External identifiers / databases | ||||||||||||||||
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properties | ||||||||||||||||
Molar mass | 158.20 g mol −1 | |||||||||||||||
Physical state |
liquid |
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density |
0.95 g cm −3 |
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Melting point |
−56 to −53 ° C |
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boiling point |
179-182 ° C |
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Vapor pressure |
5 hPa (50 ° C) |
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solubility |
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Refractive index |
1.4060 (20 ° C) |
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safety instructions | ||||||||||||||||
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Toxicological data | ||||||||||||||||
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 |
Isobutyric anhydride is a chemical compound from the group of carboxylic acid anhydrides .
Extraction and presentation
Isobutyric anhydride can be obtained by reacting acetic anhydride with isobutyric acid .
properties
Isobutyric anhydride is a flammable, hardly flammable, colorless liquid with a pungent odor that hydrolyzes in water.
use
Isobutyric anhydride is used as a starting material for esters such as sucrose acetate isobutyrate , dyes, and agricultural chemicals.
safety instructions
The vapors of isobutyric anhydride can form an explosive mixture with air ( flash point 67 ° C, ignition temperature 375 ° C).
Individual evidence
- ↑ a b c d e f g h i j k Entry on isobutyric anhydride in the GESTIS substance database of the IFA , accessed on October 18, 2018(JavaScript required) .
- ↑ David R. Lide: CRC Handbook of Chemistry and Physics A Ready-reference Book of Chemical and Physical Data . CRC Press, 1995, ISBN 978-0-8493-0595-5 , pp. 406 ( limited preview in Google Book search).
- ↑ Data sheet Isobutyric anhydride, 97% from AlfaAesar, accessed on October 18, 2018 ( PDF )(JavaScript required) .
- ↑ a b Data sheet isobutyric anhydride (PDF) from Merck , accessed on October 18, 2018.
- ↑ Google Patents: US20050014974A1 - Process for the manufacture of isobutyric anhydride - Google Patents , accessed October 18, 2018.
- ↑ RC Ramaswamy, Mills Bailey, Scott Barnicki: Hydrolysis of Isobutyric Anhydride: Effect of Partial Miscibility of Reactants on Kinetics. In: Industrial & Engineering Chemistry Research. 49, 2010, p. 10572, doi : 10.1021 / ie1004459 .