ISO 3694:1977Withdrawn

Ammonium sulphate for industrial use — Determination of chloride ions content — Potentiometric method

Sulfate d'ammonium à usage industriel — Dosage des ions chlorure — Méthode potentiométrique

Abstract / scope

Applicable to products having chloride ion contents of equal to or more than 0.0005 % (m/m). Potentiometric titration of the ions with silver nitrate solution in a nitric acid-acetone-water medium, using a silver measurement electrode and a calomel referende electrode.