ISO 3423:1975 (R2025)
Active , Confirmed Standard
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ISO 3423:1975 (R2025)

Sulphuric acid and oleums for industrial use — Determination of sulphur dioxide content — Iodometric method

Summary

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.

Notes

90.60 : Clôture de l'examen

Technical characteristics

Publisher International Organization for Standardization (ISO)
Publication Date 11/01/1975
Confirmation Date 02/14/2025
Edition 1
Page Count 3
EAN ---
ISBN ---
Weight (in grams) ---
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