0 Items
My account
Phone: (011) 7541-421, 3409-301, 3409-335, 6547-293, 3409-310
E-mail: Standards sales: prodaja@iss.rs Education: iss-edukacija@iss.rs Information about standards: infocentar@iss.rs
Stevana Brakusa 2, 11030 Beograd
Main menu

ISO 6840:1982

Cationic surface active agents (Hydrochlorides and hydrobromides) — Determination of critical micellization concentration — Method by measurement of counter ion activity

Oct 1, 1982

General information

90.93     Nov 1, 2024

ISO

ISO/TC 91

International Standard

71.100.40  

French   English  

Buying

Published

Language in which you want to receive the document.

Scope

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.

Life cycle

NOW

PUBLISHED
ISO 6840:1982
90.93 Standard confirmed
Nov 1, 2024

National adoptions

SRPS ISO 6840:1994  
ISS

Cationic surface active agents (Hydrochlorides and hydrobromides) — Determination of critical micellization concentration — Method by measurement of counter ion activity

90.93   Standard confirmed

H091 more