HG/T 4918-2016 "Spinning & weaving dyeing and finishing aids, epoxy silicone oil, determination of epoxy value" standard specifies the determination method of epoxy value of epoxy silicone oil in Spinning & weaving dyeing and finishing aids. This standard is applicable to evaluate the degree of ring oxidation of epoxy silicone oil in the dyeing and finishing process of Spinning & weaving, and determine its epoxy value by chemical analysis to reflect its performance in dyeing and finishing process. The testing process includes the preparation of samples and the use of chemical reagents to ensure the accuracy and repeatability of test results. The standard aims to provide technical support for the production and application of Spinning & weaving dyeing and finishing aids to ensure that epoxy silicone oil products meet industry requirements and mass standards.