ISO 981:1973
Sodium hydroxide for industrial use; Determination of chloride content; Mercurimetric method

Standard No.

ISO 981:1973

Release Date

1973

Published By

International Organization for Standardization (ISO)

Latest

ISO 981:1973

Scope

The method is applicable to products of which the chloride content is greater than 0.005 % (m/m). The procedure based on titration of the chloride ions with mercury(II) nitrate in the presence of diphenylcarbazone as indicator. - Replaces ISO Recommendation R 981-1969.

ISO 981:1973 history

• 1973 ISO 981:1973 Sodium hydroxide for industrial use; Determination of chloride content; Mercurimetric method