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ISO 2482:1973

Sodium chloride for industrial use — Determination of calcium and magnesium contents — EDTA complexometric methods ISO 2482:1973

Publication date:   Feb 1, 1973

General information

90.93 Standard confirmed   Nov 29, 2023

ISO

ISO/TC 47 Chemistry

International Standard

71.060.50   Salts

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Scope

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.

Life cycle

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PUBLISHED
ISO 2482:1973
90.93 Standard confirmed
Nov 29, 2023