Анализ мыла. Определение общего содержания щелочи и жирных веществ
Название (англ.):
Analysis of soaps; Determination of total alkali content and total fatty matter content
Описание (англ.):
The method consists in decomposition of the soap by a known volume of standard volumetric mineral acid solution, extraction and separation of the liberated fatty matter with light petroleum and determination of a total alkali content by titration of the excess of acid contained in the aqueous phase with a standard volumetric sodium hydroxide solution. Afterevaporation of the light petroleum from the extract, dissolution of the residue in ethanol and neutralization of the fatty acids with a standard volumetric potassium hydroxide solution. Evaporation of the ethanol and weighing of the soap formed to determine the total fatty matter content.
ALKALIES ALKALIS CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING DETERMINATION OF CONTENT FATS SOAPS SURFACTANTS VOLUMETRIC ANALYSIS CHEMICAL ANALYSIS AND TESTIN