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ISO 6840:1982

Cationic surface active agents (Hydrochlorides and hydrobromides) — Determination of critical micellization concentration — Method by measurement of counter ion activity
1. 10. 1982.

Опште информације

90.93     1. 11. 2024.

ISO

ISO/TC 91

Međunarodni standard

71.100.40  

francuski   engleski  

Kupovina

Objavljen

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Apstrakt

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.

Životni ciklus

TRENUTNO

OBJAVLJEN
ISO 6840:1982
90.93 Odluka o potvrđivanju standarda
1. 11. 2024.

Nacionalna preuzimanja

SRPS ISO 6840:1994  
ISS

Katjonske površinski aktivne materije (hloridi i hidrobromidi) - Određivanje kritične koncentracije za stvaranje micela - Metoda merenjem aktivnosti suprotnog jona (identičan sa ISO 6840:1982)

90.93   Odluka o potvrđivanju standarda

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