Reference number
ISO 3423:1975
International Standard
ISO 3423:1975
Sulphuric acid and oleums for industrial use — Determination of sulphur dioxide content — Iodometric method
Edition 1
1975-11
Read sample
ISO 3423:1975
8739
Published (Edition 1, 1975)
This publication was last reviewed and confirmed in 2019. Therefore this version remains current.

ISO 3423:1975

ISO 3423:1975
8739
Language
Format
CHF 42
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Abstract

Applicable of products the SO2 content of which is equal to or more than 2 mg/kg. Based on the displacement of the sulphur dioxide present in the test portion by a current of pure nitrogen and absorption in a known volume of iodine solution. Titration of the excess of iodine with standard volumetric sodium thiosulphate solution. The diagram of the glass apparatus for absorption is shown in a figure.

General information

  •  : Published
     : 1975-11
    : International Standard under systematic review [90.20]
  •  : 1
     : 3
  • ISO/TC 47
    71.060.30 
  • RSS updates

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