Fruit and vegetable products — Determination of benzoic acid content (benzoic acid contents greater than 200 mg per litre or per kilogram) — Molecular absorption spectrometric method
NORM herausgegeben am 1.11.1983
Designation standards: ISO 6560:1983
Publication date standards: 1.11.1983
The number of pages: 3
Approximate weight : 9 g (0.02 lbs)
Country: International technical standard
Kategorie: Technische Normen ISO
Description / Abstract: The method consists in extracting the acid from an acidified test portion using diethyl ether, nitrating followed by reduction and Mohlers reaction modified with hydroxylaminehydrochloride, measuring the absorbance of the red complex obtained with a suitable spectrometer. For determining lower concentrations, see ISO 5518.