ISO 6387:1983
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ISO 6387:1983
12721

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 

  •  :  Published
     : 1983-02
  •  : 1
     : 3
  •  : ISO/TC 91 Surface active agents
  •  :
    71.100.40 Surface active agents

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