International Standard
ISO 5523:1981
Liquid fruit and vegetable products — Determination of sulphur dioxide content (Routine method)
Reference number
ISO 5523:1981
Edition 1
International Standard
Read sample
ISO 5523:1981
Published (Edition 1, 1981)
This standard was last reviewed and confirmed in 2023. Therefore this version remains current.

ISO 5523:1981

ISO 5523:1981
CHF 42
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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.

General information

  •  : Published
     : 1981-08
    : International Standard confirmed [90.93]
  •  : 1
     : 3
  • ISO/TC 34/SC 3
  • RSS updates

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