ISO-3699 › Anhydrous hydrogen fluoride for industrial use -- Determination of water content -- Karl Fischer method

ISO-3699 - 1ST EDITION - CURRENT


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Applicable to products having a water content between 0.01 % (m/m) and 0.5 % (m/m). Is supplemented by ISO 3700 and intended for reference purposes. Bases on addition of a cooled test portion to cooled dry pyridine containing 5 % of anhydous hydrogen fluoride. The apparatus for measuring the test portion and titration and the measuring vessel are shon in figures. Subsequent electrometric titration of the water with the Karl Fischer reagent.

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Document Number

ISO 3699:1976

Revision Level

1ST EDITION

Status

Current

Publication Date

Aug. 15, 1976

Committee Number

ISO TC 47/SC 7