N-butyl propionate

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Structural formula
Structural formula of n-butyl propionate
General
Surname Propionic acid n- butyl ester
other names
  • Butyl propionate
  • Butyl propanoate
  • Butyl propanoate
Molecular formula C 7 H 14 O 2
Brief description

colorless liquid with an apple-like odor

External identifiers / databases
CAS number 590-01-2
EC number 209-669-5
ECHA InfoCard 100.008.791
PubChem 11529
Wikidata Q2726127
properties
Molar mass 130.19 g mol −1
Physical state

liquid

density

0.87 g cm −3

Melting point

−90 ° C

boiling point

146 ° C

Vapor pressure

4.6 hPa (20 ° C)

solubility
  • practically insoluble in water (1.5 g l −1 at 20 ° C)
  • miscible with ethanol
Refractive index

1.401 (20 ° C)

safety instructions
GHS hazard labeling from  Regulation (EC) No. 1272/2008 (CLP) , expanded if necessary
02 - Highly / extremely flammable

Caution

H and P phrases H: 226
P: 210
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

Propionic acid n- butyl ester is a chemical compound from the group of carboxylic acid esters .

Occurrence

The compound occurs naturally in apples, apricots, melons, and other fruits.

Extraction and presentation

Propionic acid n- butyl ester ( 3 ) can be obtained by reacting propionic acid ( 1 ) and 1-butanol ( 2 ) in the presence of sulfuric acid.

Synthesis of butyl propionate

properties

Propionic acid n- butyl ester is a slightly volatile, flammable, colorless liquid with an apple-like odor that is practically insoluble in water.

use

Propionic acid n- butyl ester is used as an odorous substance (e.g. rum essence).

safety instructions

The vapors of propionic acid n- butyl ester can form an explosive mixture with air ( flash point 38 ° C, ignition temperature 425 ° C).

Individual evidence

  1. ↑ a b c d e f g h i j k l m Entry on butyl propionate in the GESTIS substance database of the IFA , accessed on February 1, 2016(JavaScript required) .
  2. ↑ GWA Milne: Gardner's Commercially Important Chemicals: Synonyms, Trade Names, and ... John Wiley & Sons, 2005, ISBN 0-471-73661-9 , pp. 97 ( limited preview in Google Book search).
  3. ↑ Data sheet Butyl propionate, 99% from Sigma-Aldrich , accessed on October 11, 2014 ( PDF ).
  4. ↑ Entry on butyl propionate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on August 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
  5. ↑ a b c George A. Burdock: Encyclopedia of Food and Color Additives . CRC Press, 1997, pp. 353 f . ( limited preview in Google Book search).
  6. ↑ Adalbert Wollrab: Organic Chemistry An introduction for teacher training and minor students . Springer-Verlag, 2013, ISBN 978-3-662-09137-1 , pp. 566 ( limited preview in Google Book search).