对氯水杨酸的纯度测定  

Purity determination of salicylic acid chloride

作　　者：杨丰科[1] 黄震[1] 

机构地区：[1]青岛科技大学化工学院,山东青岛266042

出　　处：《应用化工》2014年第11期2118-2119,2122,共3页Applied Chemical Industry

基　　金：山东省自然科学基金资助项目(Q2006B02)

摘　　要：采用双波长法对对氯水杨酸的纯度进行了测定。对氯水杨酸在乙醇中的最大吸收波长为243 nm，副产物等吸收总波长为267 nm。测定纯对氯水杨酸的标准纯度都超过99.5%，测定市售3种对氯水杨酸的纯度在97.8%~98.0%。研究表明，该方法操作简单，分析数据准确可靠。Use dual-wavelength method to determine the purity of p-chlorine salicylic acid. The maximum absorption wavelength of p-chlorine salicylic acid in ethanol is 243 nm. The total absorption wavelength of byproducts is 267 nm. Determination of the standard purity of pure p-chlorine salicylic acid more than 99 . 5%. Determination of the purity of three kinds of commercially available p-chlorine salicylic acid was 97. 8 % ~98. 0 %. Studies show that the method is simple,the analytical data is accurate and reliable.

关 键 词：对氯水杨酸 UV分光光度法 双波长法 

分 类 号：TQ460.7[化学工程—制药化工]