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ISO 5523:1981

Liquid fruit and vegetable products — Determination of sulphur dioxide content (Routine method)

STANDARD published on 1.8.1981

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The information about the standard:

Designation standards: ISO 5523:1981
Publication date standards: 1.8.1981
The number of pages: 3
Approximate weight : 9 g (0.02 lbs)
Country: International technical standard
Category: Technical standards ISO

Annotation of standard text ISO 5523:1981 :

Description / Abstract: The determination of free sulphur dioxide consists in direkt iodometric titration of the product at a pH between 0,7 and 1, followed by blank titration of the product, freed from sulphur dioxide by boiling under reflux or by binding its free sulphur dioxide content with an exess of acetaldehyde or propioaldehyde. The bond sulphur dioxide is determined after titration of free compound, rendering of the produkt alkaline and titration of the sulphur dioxideliberated by hydrolysis with iodine in an acid medium.