ISO 6840:1982
Cationic surface active agents (Hydrochlorides and hydrobromides) — Determination of critical micellization concentration — Method by measurement of counter ion activity
OVERVIEW
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.
COMMENTS
-
PRODUCT DETAILS
| Status | Current |
|---|---|
| Edition | 1982 |
| No. of Pages | 3 |
| ICS Classification | 71.100.40 Surface active agents |
| Committee | ISO/TC 91 |
| Available for Purchase | For sale in Singapore only |
| Adoption | ISO |