Sodium chloride for industrial use -- Determination of sulphate content -- Barium sulphate gravimetric method

Document Number: ISO 2480:1972
File Size: 231 kB
Language: English
Provider: ANSI
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The method is applicable to water soluble sulphate, in the product, but also to sulphates in a principal solution prepared in an acid medium. The principle consists in dissolution of a test portion and separation of the insoluble residue. Precipitation of the sulphate ions by barium chloride in a boiling acid medium. Filtration, washing and ignition of the precipitate. Weighing of the residue.

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