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Norm
ISO 3699:1976
Issue date: 1976 08 01
Anhydrous hydrogen fluoride for industrial use — Determination of water content — Karl Fischer method
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 ...
Valid
Publisher:
International Organization for Standardization
Format:
Digital | 6 Pages
Language:
English
ICS
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.
