Reference number
ISO 3699:1976
© ISO 2025
International Standard
ISO 3699:1976
Anhydrous hydrogen fluoride for industrial use — Determination of water content — Karl Fischer method
Edition 1
1976-08
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Published (Edition 1, 1976)
This publication was last reviewed and confirmed in 2024. Therefore this version remains current.

ISO 3699:1976

Language
Format
CHF 43
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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.

General information

  • Status
     : Published
    Publication date
     : 1976-08
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 6
  • Technical Committee :
    ISO/TC 226
    ICS :
    71.060.30 
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