Сульфат натрия технический. Определение кислотности или щелочности
Название (англ.):
Sodium sulphate for industrial use; Determination of acidity or alkalinity
Описание (англ.):
Relates to the analysis of a possible excess of acidity or alkalinity. Detection by dissolution of a test portion in water. Addition of a known excess of standard volumetric suphuric acid solution in the presence of methyl red. Elimination of the carbon dioxide by boiling. Titration of the excess of acid with standard volumetric sodium hydroxide solution. Calculation expressed as sulphuric acid or sodium carbonate depending on whether thequantity of acid found is higher or less than the known quantity introduced.
ACIDITY ALKALINITY CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING CHEMICALS MEASUREMENT SODIUM SODIUM SULPHATES VOLUMETRIC ANALYSIS CHEMICAL ANALYSIS AND TESTIN