ISO 2480:1972

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

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ISO 2480:1972

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

PUBLISH DATE 1972
ISO 2480:1972

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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