Phone: (011) 7541-421, 3409-301, 3409-335, 6547-293, 3409-310
E-mail: Standards sales: prodaja@iss.rs Education: iss-edukacija@iss.rs Information about standards: infocentar@iss.rs
Stevana Brakusa 2, 11030 Beograd
Main menu

ISO 5523:1981

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

Aug 1, 1981

General information

90.93     Mar 29, 2023

ISO

ISO/TC 34/SC 3

International Standard

67.080.01  

French   English  

Buying

Published

Language in which you want to receive the document.

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
Mar 29, 2023

REVISED BY

ABANDON
ISO/WD 5523

National adoptions

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

90.93   Standard confirmed

E034-3 more