ISO 6387:1983
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ISO 6387:1983
12721

Status : Published (Under review)

This standard was last reviewed and confirmed in 2019. Therefore this version remains current.
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Format Language
std 1 42 PDF
std 2 42 Paper
  • CHF42
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Abstract

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.

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General information

  •  : Published
     : 1983-02
    : International Standard confirmed [90.93]
  •  : 1
     : 3
  • ISO/TC 91
    71.100.40 
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Life cycle

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