Norm

ISO 2993:1974 en

Ammonium sulphate for industrial use - Determination of free acidity - Titrimetric method

31,57

Over deze norm

Status Definitief
Aantal pagina's 2
Gepubliceerd op 01-04-1974
Taal Engels
Applicable to products having a free acidity, expressed as H2 SO4 , equal to or more than 0.01 % (m/m). Dissolution of a test portion in Water and titration with standard volumetric sodium hydroxide solution in the presence of an indicator. The indicator must have a colour change in the pH range between 5.2 and 5.6. Has also been approved by the IUPAC.

Details

ICS-code 71.060.50
Nederlandse titel Ammonium sulphate for industrial use - Determination of free acidity - Titrimetric method
Engelse titel Ammonium sulphate for industrial use - Determination of free acidity - Titrimetric method

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