标准摘要
[中文适用范围]： 该物质是在由水相和氯仿相组成的介质中，在指示剂存在下，用标准体积阳离子活性溶液（苄索氯铵）滴定来测定的，指示剂由阳离子染料（溴化二胺）和阴离子染料（酸性蓝1）。 该方法适用于活性材料的固体或水溶液。 必须知道阴离子活性物质的相对分子质量。 如果存在阳离子表面活性剂，则该方法不适用。 [外文原描述]： The substance is determined in a medium consisting of an aqueous and a chloroform phase by titration with a standard volumetric cationic-active solution (benzethonium- chloride) in the presence of an indicator which consists of a mixture of cationic dye (dimidium bromide) and an anionic dye (acid blue 1). The method is applicable to solids or to aqueous solutions of the active material. The relative molecular mass of the anionic active matter has to be known. The method is not applicable if cationic surface active agents are present.
英文名称Surface active agents — Detergents — Determination of anionic-active matter by manual or mechanical direct two-phase titration procedure