ISO 6840-1982 阳离子表面活性剂(氢氯化物和氢溴化物) 临界胶束浓度的测定 反离子活度测量法

标准号：ISO 6840-1982
中文标准名称：阳离子表面活性剂(氢氯化物和氢溴化物) 临界胶束浓度的测定 反离子活度测量法
英文标准名称：Cationic surface active agents (Hydrochlorides and hydrobromides); Determination of critical micellization concentration; Method by measurement of counter ion activity
标准类型：G72
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：G72
国际标准分类号：71.100.40
适用范围：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.