Résumé
The method specified determines only those phenols capable of reacting at the 2nd, 4th and 6th position (-OH = 1). The procedure consists in extraction of free phenols from a test portion with sodium hydroxide solution. Bromination of these phenols with potassium bromide-bromate solution in an acid medium and determination of the excess bromine after reaction with potassium iodide by titration with standard volumetric sodium thiosulphate solution.
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État actuel: AnnuléeDate de publication: 1974-04
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Edition: 1Nombre de pages: 2
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- ICS :
- 71.080.70 Esters
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