ISO 2482-1973 工业用氯化钠 钙和镁含量的测定 乙二胺四乙酸(EDTA)络合滴定法

标准号：ISO 2482-1973
中文标准名称：工业用氯化钠 钙和镁含量的测定 乙二胺四乙酸(EDTA)络合滴定法
英文标准名称：Sodium chloride for industrial use; Determination of calcium and magnesium contents; EDTA complexometric methods
标准类型：G10
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：G10
国际标准分类号：71.060.50
适用范围：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.