ISO 3693:1977Withdrawn

Nitric acid for industrial use — Determination of chloride ions content — Potentiometric method

Acide nitrique à usage industriel — Dosage des ions chlorure — Méthode potentiométrique

Abstract / scope

Applicable to products having chloride contents equal or more than 0,0002 % (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 reference electrode.