0

ISO 3423:1975

Sulphuric acid and oleums for industrial use — Determination of sulphur dioxide content — Iodometric method ISO 3423:1975

Publication date:   Nov 1, 1975

General information

90.93 Standard confirmed   Jul 19, 2019

ISO

ISO/TC 47 Chemistry

International Standard

71.060.30   Acids

Buying

Published

Language in which you want to receive the document.

Scope

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.

Life cycle

NOW

PUBLISHED
ISO 3423:1975
90.93 Standard confirmed
Jul 19, 2019