Isopentyl isobutyrate

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Structural formula
Structural formula of isopentyl isobutyrate
General
Surname Isopentyl isobutyrate
other names
  • 3-methylbutyl-2-methylpropionate
  • Isoamyl isobutyrate
  • Isopentyl isobutyrate
Molecular formula C 9 H 18 O 2
Brief description

colorless liquid

External identifiers / databases
CAS number 2050-01-3
ECHA InfoCard 100.016.436
PubChem 519786
ChemSpider 453397
Wikidata Q27159709
properties
Molar mass 158.24 g mol −1
Physical state

liquid

density

0.856 g cm −3 (25 ° C)

boiling point

169-171 ° C

solubility

very soluble in diethyl ether and ethanol

Refractive index

1.406 (20 ° C)

safety instructions
GHS labeling of hazardous substances
02 - Highly / extremely flammable

Caution

H and P phrases H: 226
P: no P-phrases
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

Isopentyl isobutyrate is a chemical compound from the group of butyric esters .

Occurrence

Isopentyl isobutyric acid ester has been found in bananas , Feyoa fruits (Feijoa sellowiana), grapes , melons , papaya , corn oil , beer , hop oil , whiskey , white wine , honey , jackfruit , cherimoya and Roman chamomile oil . The compound is considered one of the hop flavor components in beer.

Extraction and presentation

Isobuttersäureisopentylester can be prepared by reaction of vapors of isobutyl alcohol and isoamyl alcohol over a silver-activated copper - manganese (II) oxide - catalyst are recovered.

properties

Isopentyl isobutyrate is a colorless liquid. It has a fruity smell with an undertone reminiscent of apricot and pineapple .

use

Isopentyl isobutyrate is used as a flavoring agent. The compound is also approved as a feed additive.

Individual evidence

  1. ↑ a b c d e f g h i data sheet Isoamyl isobutyrate, ≥98%, FG from Sigma-Aldrich , accessed on January 2, 2019 ( PDF ).
  2. ↑ 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. 342 ( limited preview in Google Book search).
  3. ↑ a b c George A. Burdock: Fenaroli's Handbook of Flavor Ingredients . CRC Press, 2016, ISBN 978-1-4200-9086-4 , pp. 1237 ( limited preview in Google Book search).
  4. ↑ Official Journal L 13/2017: Official Journal L 13/2017 , accessed on January 2, 2019