Reference number
ISO 742:1973
ISO 742:1973
© ISO 2024
ISO 742:1973
Sodium carbonate for industrial use — Determination of chloride content — Mercurimetric method
Edition 1
1973-02
1973-02
Retirada
Resumen
The method is applicable to products of which the sodium chloride content is greater than 0,005 % (m/m). The prinziple consists in titration of the chloride ion with mercury(II) nitrate solution in the presence of diphenylcarbazone as indicator. Cancels and replaces ISO Recommendation R 742-1968.