防老剂BHT的提纯及其纯度检测  

Purification and Purity Determination of 2,6- Di- p - tert butyl- cresol

作　　者：魏伯荣[1] 陈青[1] 包德君[1] 尹德忠[1] 

机构地区：[1]西北工业大学理学院应用化学系,陕西西安710072

出　　处：《聚合物与助剂》2006年第3期41-47,共7页Polymer & Additives

摘　　要：为提高和准确测定防老剂BHT的纯度，采用重结晶和区域熔融法对工业品防老剂BHT进行提纯，并用高效液相色谱仪和差示扫描量热仪对样品进行纯度检测。高效液相色谱法（HPLC）的标准曲线法测得的回收率在100．19％～100．28％之间，相对标准差（RSD）为0．05％；提纯品防老剂BHT的纯度为99．09％，RSD为0．08％。用差示扫描量热法（DSC）测得提纯品纯度为99．16％，RSD为0．14％。纯度达到国际同类产品水平。In order to improving the purity of industrial product, 2,6-Di-tert-butyl- p-cresol was purified by the methods of recrystallization and zone melting. The purity was determined by high performance liquid chromatography （HPLC）and Differential Scanning Calorimetry （DSC）. The purity is 99. 09% with Relative Standard Deviation （RSD） of 0. 08% ,tested from the way of standard curve. The recovery of HPLC was in the range of 100. 19%-100. 28% with the RSD of 0.05%. The purity tested by DSC is 99.16% with RSD of 0. 14%. This purified antioxidant BHT reaches the same level of intemational product.

关 键 词：防老剂BHT 重结晶 区域熔融 高效液相色谱法 差示扫描量热法 纯度 

分 类 号：TQ330.382[化学工程—橡胶工业] S882.2[农业科学—特种经济动物饲养]