Propyl acetate

from Wikipedia, the free encyclopedia

The propyl acetate (also propyl acetates ) are among the organic-chemical substances and form a group of two structurally saturated Carbonsäureestern . They are the esters of acetic acid with the two isomeric propanols: n- propanol and isopropanol . They have the general molecular formula C 5 H 10 O 2 and a molar mass of 102.13 g / mol.

presentation

The two propyl acetate can be synthesized on an industrial scale by an acid-catalyzed esterification of acetic acid and 1-propanol or 2-propanol .

Synthesis of n-propyl acetate
Synthesis of iso-propyl acetate

The equilibrium reaction can be shifted in the direction of the products by removing water .

properties

Propyl acetate
Surname Acetic acid n- propyl ester Isopropyl acetate
other names n -propyl acetate Isopropyl acetate
Structural formula Propyl acetate 200.svg Isopropyl acetate 200.svg
CAS number 109-60-4 108-21-4
PubChem 7997 7915
ECHA InfoCard 100.003.352 100.003.238
Physical state liquid
Molar mass 102.13 g mol −1
Melting point −95 ° C −73 ° C
boiling point 102 ° C 89 ° C
density 0.89 g cm −3 (20 ° C) 0.88 g cm −3 (20 ° C)
Vapor pressure 33 hPa (20 ° C) 62 hPa (20 ° C)
Solubility
in water
21.2 g l −1 (20 ° C) 31 g l −1 (20 ° C)
Flash point 10 ° C 1.5 ° C
Ignition temperature 455 ° C 425 ° C
Explosion limits 1.7 to 8.0% 1.8 to 8.0%
GHS
labeling
from  Regulation (EC) No. 1272/2008 (CLP) , expanded if necessary
02 - Highly / extremely flammable 07 - Warning
danger
from  Regulation (EC) No. 1272/2008 (CLP) , expanded if necessary
02 - Highly / extremely flammable 07 - Warning
danger
H and P phrases 225-319-336
066
210-240-261-305 + 351 + 338 210-305 + 351 + 338-370 + 378-403 + 235
Tox data 9370 mg kg −1 ( LD 50ratoral ) 6750 mg kg −1 ( LD 50ratoral )

use

Propyl acetate is used in particular as a solvent for various natural and synthetic resins in the paint, printing inks and chemical-technical industries.

Individual evidence

  1. Entry on propyl acetate. In: Römpp Online . Georg Thieme Verlag, accessed on December 27, 2019.
  2. Ying Liu, Jia Liu, Hanzhao Yan, Zheng Zhou, Aidong Zhou: Kinetic Study on Esterification of Acetic Acid with Isopropyl Alcohol Catalyzed by Ion Exchange Resin. In: pubs.acs.org. January 1, 1970, accessed December 27, 2019 .
  3. a b c d e f g h i j k l m Entry on acetic acid n-propyl ester in the GESTIS substance database of the IFA , accessed on December 26, 2019(JavaScript required) .
  4. a b c d e f g h i j k l m Entry on isopropyl acetate in the GESTIS substance database of the IFA , accessed on December 26, 2019(JavaScript required) .
  5. Entry on propyl acetate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on December 26, 2019. Manufacturers or distributors can expand the harmonized classification and labeling .
  6. Entry on isopropyl acetate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on December 26, 2019. Manufacturers or distributors can expand the harmonized classification and labeling .