规定了水不溶性脂肪酸的制备方法及其固化温度的测定。该方法不适用于低于30摄氏度的滴定。其原理是用甘油中的氢氧化钾溶液皂化试验部分，将肥皂溶解在水中并中和。用热氯化钠溶液洗涤分离的不溶性脂肪酸，干燥并过滤。熔化制备的脂肪酸，冷却它们，持续搅拌，观察凝固温度。

Specifies a method for the preparation of the water-insoluble fatty acide and determination of their solidification temperature. The method is not applicable to titres below 30 degrees centigrade. The principle is saponification of a test portion with potassium hydroxide solution in glycerol, dissolution of the soap in water and neutralization. Washing of the separated insoluble fatty acids with hot sodium chloride solution, drying and filtering. Melting of the prepared fatty acids, cooling them, with continuous stirring, and observation of the solidification temperature.