ISO 6840:1982
ISO 6840:1982



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.

General information 

  •  : Published
     : 1982-10
  •  : 1
     : 3
  •  : ISO/TC 91 Surface active agents
  •  :
    71.100.40 Surface active agents

Buy this standard

Format Language
std 1 40 PDF
std 2 40 Paper
  • CHF40

Life cycle

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)