防老剂BHT的提纯及其纯度检测  

Purification and Purity Determination of 2,6-Di-tert-butyl-P-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：《合成材料老化与应用》2006年第1期1-4,共4页Synthetic Materials Aging and Application

基　　金：国防军工计量"十五"计划重点项目(任务号:J142001A001)

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 purifted 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 international 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：TQ314.249[化学工程—高聚物工业]