ISO 5523:1981

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

Publication date: 1 gush 1981

General information

Current stage: 90.93 Effective date: 29 mar 2023

Originator: ISO

Owner: ISO/TC 34/SC 3

Type: International Standard

ICS: 67.080.01

Gjuha: frëngjisht anglisht

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Statusi: Publikuar

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Scope

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.

Life cycle

NOW

PUBLISHED
ISO 5523:1981
90.93 Standard confirmed
29 mar 2023

REVISED BY

ABANDON
ISO/WD 5523

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