ISO 2482:1973
Sodium chloride for industrial use — Determination of calcium and magnesium contents — EDTA complexometric methods
Sodium chloride for industrial use — Determination of calcium and magnesium contents — EDTA complexometric methods
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 3
- Дата публикации:
- 1 февраля 1973 г.
- Издание:
- ISO IS 2482 edition 1 version 1
- ICS:
- 71.060.50
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.
Abstract
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