标准摘要
[中文适用范围]： 由于肥皂通常含有少量未皂化的中性脂肪，因此不存在测定游离苛性碱的完美方法：在溶解肥皂样品时，任何存在的游离苛性碱都会导致中性脂肪发生程度不同的皂化反应。 [外文原描述]： The determination is carried out in the following way: Extraction of matter soluble in hexane, and titration of the free fatty acids removed, with potassium hydroxide solution. Saponification of products soluble in hexane neutralized in this way and extraction of the unsaponifiable matter by hexane.
英文名称Analysis of soaps — Determination of unsaponifiable, unsaponified and unsaponified saponifiable matter