ISO 3702:1976
Anhydrous hydrogen fluoride for industrial use; Determination of sulphur dioxide content; Iodometric method

Standard No.

ISO 3702:1976

Release Date

1976

Published By

International Organization for Standardization (ISO)

Status

Withdraw 2002-05

Latest

ISO 3702:1976

Scope

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.

ISO 3702:1976 history

• 1976 ISO 3702:1976 Anhydrous hydrogen fluoride for industrial use; Determination of sulphur dioxide content; Iodometric method