Sodium chloride for industrial use — Determination of calcium and magnesium contents — EDTA complexometric methods

Informationen über die Norm:

Bezeichnung normen: ISO 2482:1973
Ausgabedatum normen: 1.2.1973
Zahl der Seiten: 3
Gewicht ca.: 9 g (0.02 Pfund)
Land: Internationale technische Norm
Kategorie: Technische Normen ISO

Die Annotation des Normtextes ISO 2482:1973 :

Description / Abstract: The method is applicable to water-soluble salts for contents greater than 0,001 % (m/m). In a special case, the determination of ions in a principal solution prepared in an acid medium is pooible. The principle consists in dissolution of a test portion and separation of insoluble matter. Titration of the filtrate obtained according to ISO 2479 using disodium ethylendiamintetraacetate (EDTA) in the presence of glyoxal-bis-(2-hydroxyanil) (GBHA) and mordant black 11 (Cl 14645) respectively as indicators.