Abstract Preview

A 0,5 % (m/m) aqueous soap solution is prepared, and after maintaining this at testing temperature for 24 h, an aliquot portion of this solution is taken. This aliquot portion is mixed with a dilute solution of the dispersing agent (surface active agent) and subsequently with a specified volume of water of known calcium hardness. The mixture is maintained for 1 h at the testing temperature and then the calcium soap present in a aliquot portion of the lower layer is titrated with a standard volumetric solution of hydrochloric acid in the presence of bromcresol green as indicator.


General information

  • Status :  Published
    Publication date : 1983-02
  • Edition : 1
    Number of pages : 3
  • :
    ISO/TC 91
    Surface active agents
  • 71.100.40
    Surface active agents

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