Reference number
ISO 3236:1975
ISO 3236:1975
© ISO 2024
ISO 3236:1975
Sodium sulphate for industrial use — Determination of chlorides content — Mercurimetric method
Edition 1
1975-07
1975-07
Retirada
Resumen
Applicable to products the content of which expressed as chlorine exceeds 0.005 % (m/m). If the analyst can easily detect the indicator's colour change using a 0.02 N standard volumetric mercury(II) nitrate solution the method can, subjected to agreement, be extended to products the content of which exceeds 0.001 % (m/m). The titration of the chloride ions (Cl- ) is carried out with a 0.1 N standard volumetric solution of mercury(II) nitrate in the presence of 1,5-diphenylcarbazone as indicator.
Ciclo de vida
¿Tiene alguna duda?
Consulte nuestras Ayuda y asistencia
Atención al cliente
+41 22 749 08 88
Horario de asistencia:
De lunes a viernes - 09:00-12:00, 14:00-17:00 (UTC+1)