UNE 55-802-1985 Surface agents. Determination of key density of cationic surface agent (hydrochloric acid and bromic acid) glue technology information. Methods for measuring ion contrast activity
The purpose of this standard is to establish a method for determining the critical concentration for the formation of micelles of cationic surface agents (hydrochlorides and hydrobromides), dissolved in distilled water or in other aqueous systems, by measuring the activity of the ion. On the contrary, using a membrane electrode. The method is applicable to cationic surface agents (hydrochlorides and hydrobromides) purified or not, soluble in water, having a Krafft temperature less than 60 °C.