Isobutyl propionate

Structural formula
General
Surname	Isobutyl propionate
other names	Isobutyl propionate
Molecular formula	C 7 H 14 O 2
Brief description	colorless liquid with a sweet odor
External identifiers / databases
EC number	208-746-0
ECHA InfoCard	100,007,952
PubChem	10895
Wikidata	Q27160785
properties
Molar mass	130.19 g mol −1
Physical state	liquid
density	0.86 g cm −3
Melting point	−71 ° C
boiling point	137 ° C
Vapor pressure	6.4 hPa (20 ° C)
solubility	sparingly soluble in water (2.6 g l −1 at 25 ° C); soluble in most organic solvents; miscible with ethanol;
Refractive index	1.397 (20 ° C)
safety instructions
GHS hazard labeling from Regulation (EC) No. 1272/2008 (CLP) , expanded if necessary 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

Isobutyl propionate is a chemical compound from the group of carboxylic acid esters .

Occurrence

Isobutyl propionate has been found in apple juice , apricots , melons , cheese , hop oil , rum , cider , mushrooms , bourbon vanilla and monkey oranges .

Extraction and presentation

Isobutyl propionate can be obtained by reacting isobutyl alcohol with propionic acid in the presence of sulfuric acid or other catalysts.

properties

Isobutyl propionate is a colorless liquid with a sweet odor that is sparingly soluble in water.

use

Isobutyl propionate is used as a flavoring agent (for example as a rum flavoring ).

safety instructions

The vapors of isobutyl propionate can form an explosive mixture with air ( flash point 31 ° C, ignition temperature 435 ° C).

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k Entry on isobutyl propionate in the GESTIS substance database of the IFA , accessed on December 30, 2018(JavaScript required) .
↑ ^a ^b ^c George A. Burdock: Fenaroli's Handbook of Flavor Ingredients . CRC Press, 2016, ISBN 978-1-4200-9086-4 , pp. 998 ( limited preview in Google Book search).
↑ Data sheet isobutyl propionate, 98% from Sigma-Aldrich , accessed on December 30, 2018 ( PDF ).
↑ Entry on isobutyl propionate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on January 24, 2019. Manufacturers or distributors can expand the harmonized classification and labeling .
↑ George A. Burdock: Encyclopedia of Food and Color Additives . CRC Press, 1997, ISBN 0-8493-9412-0 , pp. 1459 ( limited preview in Google Book Search).
^ Alfred Wagner: Aroma substances; Short manual for the aroma, non-alcoholic drinks ... Steinkopff, 1933, OCLC 1123367234 ( limited preview in the Google book search).

↑ KS Jaiswal, VK Rathod: Acoustic cavitation promoted lipase catalysed synthesis of isobutyl propionate in solvent free system: Optimization and kinetic studies. In: Ultrason Sonochem. 40, 2018, pp. 727-735, PMID 28946479 .

^ Gert Blumenthal, Dietmar Linke, Siegfried Vieth: Chemistry basic knowledge for engineers . Springer-Verlag, 2007, ISBN 978-3-8351-9047-4 , p. 418 ( limited preview in Google Book search).

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k Entry on isobutyl propionate in the GESTIS substance database of the IFA , accessed on December 30, 2018(JavaScript required) .

[George_A._Burdock-2] George A. Burdock: Fenaroli's Handbook of Flavor Ingredients . CRC Press, 2016, ISBN 978-1-4200-9086-4 , pp. 998 ( limited preview in Google Book search).

[Sigma-3] Data sheet isobutyl propionate, 98% from Sigma-Aldrich , accessed on December 30, 2018 ( PDF ).

[CLP_100.007.952-4] Entry on isobutyl propionate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on January 24, 2019. Manufacturers or distributors can expand the harmonized classification and labeling .

[Encyclopedia-5] George A. Burdock: Encyclopedia of Food and Color Additives . CRC Press, 1997, ISBN 0-8493-9412-0 , pp. 1459 ( limited preview in Google Book Search).

[Alfred_Wagner-6] Alfred Wagner: Aroma substances; Short manual for the aroma, non-alcoholic drinks ... Steinkopff, 1933, OCLC 1123367234 ( limited preview in the Google book search).

[PMID28946479-7] KS Jaiswal, VK Rathod: Acoustic cavitation promoted lipase catalysed synthesis of isobutyl propionate in solvent free system: Optimization and kinetic studies. In: Ultrason Sonochem. 40, 2018, pp. 727-735, PMID 28946479 .

[Gert_Blumenthal,_Dietmar_Linke,_Siegfried_Vieth-8] Gert Blumenthal, Dietmar Linke, Siegfried Vieth: Chemistry basic knowledge for engineers . Springer-Verlag, 2007, ISBN 978-3-8351-9047-4 , p. 418 ( limited preview in Google Book search).