ISO 981:1973

Current Revision
Sodium hydroxide for industrial use -- Determination of chloride content -- Mercurimetric method

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ISO 981:1973

Sodium hydroxide for industrial use -- Determination of chloride content -- Mercurimetric method

PUBLISH DATE 1973
ISO 981:1973

The method is applicable to products of which the chloride content is greater than 0.005 % (m/m).

The procedure is based on titration of the chloride ions with mercury(II) nitrate in the presence of diphenylcarbazone as indicator.

Replaces ISO Recommendation R 981-1969.

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