Sodium fluoride primarily used for the production of aluminium — Determination of chlorides content — Turbidimetric method
NORMA vydaná dňa 1.4.1976
Označenie normy: ISO 3566:1976
Dátum vydania normy: 1.4.1976
Počet strán: 2
Približná hmotnosť: 6 g (0.01 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy 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.