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ISO 3699:1976

Anhydrous hydrogen fluoride for industrial use — Determination of water content — Karl Fischer method

Aug 1, 1976

General information

90.93     Dec 16, 2024

ISO

ISO/TC 226

International Standard

71.060.30  

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Scope

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.

Life cycle

NOW

PUBLISHED
ISO 3699:1976
90.93 Standard confirmed
Dec 16, 2024