Peroxybenzoic acid

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Structural formula
Structure of peroxybenzoic acid
General
Surname Peroxybenzoic acid
other names
  • Benzoperic acid
  • Perbenzoic acid
  • Benzene carboperoxo acid ( IUPAC )
Molecular formula C 7 H 6 O 3
Brief description

colorless, pungent smelling crystals, very volatile

External identifiers / databases
CAS number 93-59-4
EC number 202-260-2
ECHA InfoCard 100.002.056
PubChem 523077
Wikidata Q416737
properties
Molar mass 138.12 g mol −1
Physical state

firmly

Melting point

41-43 ° C

boiling point

97–110 ° C (20 h Pa )

safety instructions
GHS hazard labeling
no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

The peroxybenzoic acid (obsolete: perbenzoic acid ) is an organic acid which is a derivative of benzoic acid is. It belongs to the group of peroxycarboxylic acids .

properties

Peroxybenzoic acid is in the form of colorless, pungent-smelling crystals at room temperature and is very volatile . Their melting point is 41–43 ° C. It is only slightly soluble in water, but easily soluble in organic solvents .

use

It is a strong oxidizing agent and therefore has many uses.

With alkenes , peroxybenzoic acid produces epoxides ( Prileschajew reaction ), which is why it is used in analytical chemistry to determine the content of double bonds .

Manufacturing

Peroxybenzoic acid is made from dibenzoyl peroxide and sodium ethoxide in ethanol .
The formation of peroxybenzoic acid during the oxidation of benzaldehyde with hydrogen peroxide was described by Hermann Staudinger as early as 1913.

Individual evidence

  1. a b c d e f J. Falbe, M. Regitz (ed.): Römpp Lexikon Chemie . 10th edition, Thieme, Stuttgart a. New York, 1996-1999. P. 3205.
  2. This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
  3. H. Staudinger: About the auto-oxidation of organic compounds I. About the auto-oxidation of aromatic aldehydes . In: Reports of the German Chemical Society . tape 46 , no. 3 , July 1913, p. 3530-3535 , doi : 10.1002 / cber.191304603134 ( PDF ).