ISO 6840:1982
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ISO 6840:1982
13345

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

The determination is carried out as follows: Potentiometric determination of the chloride or bromide ion activity of a series of solutions of cationic surface active agents the concentration of which cover the expected micellization concentration. Plotting the graph of potential as a function of the logarithm of the concentration; the c.m.c. corresponds to the singularity on this curve. The method is applicable to purified cationic surface active agents (hydrochlorides and/or hydrobromides), which are soluble in water and which have a Krafft temperature below 60 degree Celsius.

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General information

  •  : Published
     : 1982-10
    : International Standard under systematic review [90.20]
  •  : 1
     : 3
  • ISO/TC 91
    71.100.40 
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