ISO 3702:1976
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Anhydrous hydrogen fluoride for industrial use — Determination of sulphur dioxide content — Iodometric method
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
05-04-2019
English, French
01-06-1976
Applicable to products having SO2 contents between 0.002 % (m/m) and 0.20 % (m/m). The principle consists in addition of a measured volume of iodine solution to a test portion. Back-titration of the excess iodine using a standard volumetric sodium thiosulphate solution and calculation of the SO2 content from the amount of iodine used.
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