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ISO 5523:1981

Current Revision

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

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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.


SDO ISO: International Organization for Standardization
Document Number ISO 5523
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 34/SC 3
Publish Date Document Id Type View
Not Available ISO 5523:1981 Revision