Propionic acid propyl ester

Structural formula
General
Surname	Propionic acid propyl ester
other names	Propyl propionate; Propyl propanoate;
Molecular formula	C 6 H 12 O 2
Brief description	colorless liquid with a pear-like odor
External identifiers / databases
EC number	203-389-7
ECHA InfoCard	100.003.082
PubChem	7803
Wikidata	Q3119221
properties
Molar mass	116.16 g mol −1
Physical state	liquid
density	0.88 g cm −3
Melting point	−76 ° C
boiling point	122 ° C
Vapor pressure	13.5 hPa (20 ° C)
solubility	sparingly soluble in water (5 g l −1 at 20 ° C); miscible with alcohol, ether and propylene glycol;
Refractive index	1.3930 (20 ° C)
safety instructions
H and P phrases	H: 226-332
	P: 210-261-370 + 378
Toxicological data	10300 mg kg −1 ( LD 50 , rat , oral ) ; > 14,100 mg kg −1 ( LD 50 , rabbit , transdermal ) ;
	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

Propionic acid propyl ester is a naturally occurring fruit ester and a chemical compound from the group of carboxylic acid esters .

Occurrence

Apples

Propionic acid propyl ester has been detected among the volatile components of grapes, fresh apples, apple juice, apricots, melons, papaya, pears, certain types of cheese, rum, cider, popcorn, olives, malt whiskey and coffee.

Extraction and presentation

Propyl propionate can be obtained by esterifying propyl alcohol with propionic acid in the presence of concentrated sulfuric acid or boron trifluoride .

properties

Propionate is a colorless liquid with a pear-like odor that is sparingly soluble in water.

use

Propionic acid propyl ester is used in automotive refinishing, OEM paints, equipment coatings, printing inks and as a polymerization solvent. Its good activity enables an efficient viscosity reduction of the resin, which enables the development of VOC- poor coatings. Its high electrical resistance is beneficial in optimizing the transfer efficiency of coatings applied via electrostatic sprayers. The compound is used in the flavor and fragrance industry and as a solvent.

safety instructions

The vapors of propionic acid propyl ester can form an explosive mixture with air ( flash point 24 ° C, ignition temperature 445 ° C).

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m Entry on propionic acid propyl ester in the GESTIS substance database of the IFA , accessed on November 28, 2018(JavaScript required) .
↑ ^a ^b ^c George A. Burdock: Fenaroli's Handbook of Flavor Ingredients . CRC Press, 2004, ISBN 978-1-4200-3787-6 , pp. 1648 ( limited preview in Google Book search).
↑ ^a ^b Data sheet n-Propyl propionate, 99% from AlfaAesar, accessed on November 28, 2018 ( PDF )(JavaScript required) .
↑ Entry on propyl propionate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on November 30, 2018. Manufacturers or distributors can expand the harmonized classification and labeling .
↑ Enius: propyl propionate , accessed November 28, 2018.

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m Entry on propionic acid propyl ester in the GESTIS substance database of the IFA , accessed on November 28, 2018(JavaScript required) .

[George_A._Burdock-2] George A. Burdock: Fenaroli's Handbook of Flavor Ingredients . CRC Press, 2004, ISBN 978-1-4200-3787-6 , pp. 1648 ( limited preview in Google Book search).

[Alfa-3] Data sheet n-Propyl propionate, 99% from AlfaAesar, accessed on November 28, 2018 ( PDF )(JavaScript required) .

[CLP_100.003.082-4] Entry on propyl propionate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on November 30, 2018. Manufacturers or distributors can expand the harmonized classification and labeling .

[enius.de-5] Enius: propyl propionate , accessed November 28, 2018.