Тезис

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. After evaporation 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.


Общая информация 

  • Текущий статус
     : Отозвано
    Дата публикации
     : 1975-10
  • Версия
     : 1
  • Технический комитет
     : ISO/TC 91 Surface active agents
  • ICS
     :
    71.100.40 Surface active agents

Жизненный цикл

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  2. Интернет-магазин
  3. Каталог стандартов
  4. МКС
  5. 71
  6. 71.100
  7. 71.100.40
  8. ISO 685:1975