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Norm

ISO 3699:1976

Ausgabedatum: 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 ...
Gültig
Herausgeber:
International Organization for Standardization
Format:
Digital | 6 Seiten
Sprache:
Englisch

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.