Sodium fluoride primarily used for the production of aluminium — Determination of chlorides content — Turbidimetric method
NORM herausgegeben am 1.4.1976
Bezeichnung normen: ISO 3566:1976
Ausgabedatum normen: 1.4.1976
Zahl der Seiten: 2
Gewicht ca.: 6 g (0.01 Pfund)
Land: Internationale technische Norm
Kategorie: Technische Normen ISO
Description / Abstract: Applicable to products having a chlorides content, expressed as chlorine, of equal to or more than 0.005 % (m/m). The principle consists in precipitation, in the presence of boric acid, of chloride ions with silver nitrate. Comparison of the opalescence of the test solution with that of standard matching solutions using Nessler tubes against a black background. Turbidimetric evaluation of the mass of precipitate.