Active standard | Published: 01/08/1976

ISO 3699:1976

Anhydrous hydrogen fluoride for industrial use — Determination of water content — Karl Fischer method
(Fluorure d´hydrogene a usage industriel — Dosage de l´eau — Méthode de Karl Fischer)

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Detail information

Designation: ISO 3699:1976

Publication date: 01/08/1976

Pages: 6

Country: International technical standard

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Anotation

Description / Abstract: 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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