International Standard
ISO 684:1974
Analysis of soaps — Determination of total free alkali
Reference number
ISO 684:1974
Edición 1
International Standard
Vista previa
ISO 684:1974
No disponible en español
Publicado (Edición 1, 1974)
Esta norma se revisó y confirmó por última vez en 2022. Por lo tanto, esta versión es la actual.

ISO 684:1974

ISO 684:1974
CHF 42
Convertir Franco suizo (CHF) a tu moneda


The soap is dissolved in an ethanolic solution, the free alkali is neutralized with a known excess of sulphuric acid solution and the excess acid is titrated with ethanolic potassium hydroxide solution. The method is not applicable if the soap cantains additives (alkali, silicates, etw.) which can be decomposed by sulphuric acid by the procedure specified. The method is also not applicable to coloured soaps if the colour interferes with the phenolphthalein end point.

Informaciones generales

  •  : Publicado
     : 1974-11
    : Norma Internacional confirmada [90.93]
  •  : 1
     : 2
  • ISO/TC 91
  • RSS actualizaciones

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