将1004A，1203A，602A以及表面活性剂相同的实验条件进行环氧化反应，将反应后的混合物纯化后，进行环氧当两滴定。原理是通过高氯酸（HCIO4)与溴化四乙基铵(NEt4Br )反应生成的溴化氢与1，2-环氧基的定量反应。该程序包括用高氯酸-冰醋酸标准溶液滴定溶解在含溴化四乙基铵的环氧树脂的二氯甲烷溶液，以结晶紫为指标剂，当环氧基被消耗完，过量的溴化氢会引起过量的结晶紫指标剂变色。

The epoxidation reaction was carried out under the same experimental conditions as 1004A, 1203A, 602A and surfactants, and after the reaction mixture was purified, epoxy was titrated as two. The principle is the quantitative reaction of hydrogen bromide and 1,2-epoxy group by reacting perchloric acid (HCIO4) with tetraethylammonium bromide (NEt4Br). The procedure consists of titrating a dichloromethane solution dissolved in an epoxy resin containing tetraethylammonium bromide with a perchloric acid-glacial acetic acid standard solution, with crystal violet as an indicator, when the epoxy group is consumed, excess hydrogen bromide will cause excessive crystal violet indicator discoloration.