International Standard
ISO 2482:1973
Sodium chloride for industrial use — Determination of calcium and magnesium contents — EDTA complexometric methods
Reference number
ISO 2482:1973
ISO 2482:1973
Edición 1
1973-02
1973-02
© ISO 2024
International Standard
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ISO 2482:1973
7402
No disponible en español
Publicado
(Edición 1, 1973)
Esta norma se revisó y confirmó por última vez en 2023.
Por lo tanto, esta versión es la actual.
Resumen
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.
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