Propionic acid tert -butyl ester

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Structural formula
Structural formula of tert-butyl propionate
General
Surname Propionic acid tert -butyl ester
other names
  • tert -butylpropanoate ( IUPAC )
  • 1,1-dimethylethyl propionate
  • tert -butyl propionate
Molecular formula C 7 H 14 O 2
Brief description

colorless liquid with a pleasant, apple-like odor

External identifiers / databases
CAS number 20487-40-5
ECHA InfoCard 100.108.604
PubChem 88561
ChemSpider 79905
Wikidata Q27258627
properties
Molar mass 130.19 g mol −1
Physical state

liquid

density

0.87 g cm −3

boiling point

116-118 ° C

solubility

practically insoluble in water (approx. 2 g l −1 at 25 ° C)

Refractive index

1.393 (20 ° C)

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

danger

H and P phrases H: 225
P: 210
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 tert-butyl ester is a chemical compound from the group of carboxylic acid esters .

properties

Propionic acid tert-butyl ester is an easily flammable colorless liquid with a pleasant, apple-like odor, which is practically insoluble in water.

use

Propionic acid tert-butyl ester is used as a flavoring agent. The compound can also be used to synthesize other chemical compounds (for example zoapatanol ).

safety instructions

The vapors of propionic acid tert -butyl ester can form an explosive mixture with air ( flash point 16 ° C, ignition temperature > 300 ° C).

Individual evidence

  1. a b c d e f g h i entry to propionic acid tert-butyl ester in the GESTIS database of IFA , retrieved on December 30, 2018(JavaScript required) .
  2. Data sheet tert-Butyl propionate, 99% from Sigma-Aldrich , accessed on December 30, 2018 ( PDF ).
  3. Entry on tert-butyl propionate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on December 30, 2018. Manufacturers or distributors can expand the harmonized classification and labeling .
  4. EU: (EU) No. 872/2012 OF THE COMMISSION of October 1, 2012 laying down the list of flavoring substances in accordance with Regulation (EC) No. 2232/96 of the European Parliament and of the Council, including this list in Annex I of Regulation (EC) No. 1334/2008 of the European Parliament and of the Council and repealing Commission Regulation (EC) No. 1565/2000 and Commission Decision 1999/217 / EC , accessed on December 30, 2018.
  5. Michael Harmata: Strategies and Tactics in Organic Synthesis . Elsevier, 2011, ISBN 978-0-08-055602-4 , pp. 69 ( limited preview in Google Book search).