标准摘要
[中文适用范围]： 测定可以通过乙醇法或氯化钡法两种不同的方式进行。 在第一种情况下，将肥皂溶解在中和的乙醇中，并用盐酸的乙醇溶液滴定游离的苛性碱。 第二种方法包括用氯化钡沉淀肥皂和碳酸盐并测定溶液的残余碱度，代表游离氢氧化钾的碱度。 [外文原描述]： The determination may be carried out in two different ways by the ethanol method or the barium chloride method. In the first case the soap is dissolved in neutralized ethanol, and the free caustic alkali is titrated with an ewthanol solution of hydrochloric acid. The second way includes precipitating of soap and carbonate with barium chloride and determining of the residual alkalinity of the solution, representing the alkalinity of the free potassium hydroxide.
英文名称Surface active agents — Analysis of soaps — Determination of free caustic alkali