摘要
介绍了一种液晶中间体3,4,5-三氟苯酚的纯化方法,采用了惰性溶剂共沸精馏的方法分离了液晶中间体3,4,5-三氟苯酚中近沸点杂质。结果表明,该纯化方法能使3,4,5-三氟苯酚的纯度达到99.95%以上。
The method for purification of liquid crystal intermediate 3,4,5-trifluorophenol was studied .The aze-otropic distillation for removing impurities with boiling points close to 3,4,5-trifluorophenol was carried out with va-rious inert solvents .The experiment showed that the separation effect was improved by azeotropic distillation with in -ert solvent,the purity of obtained 3,4,5-trifluorophenol was over 99.95%.
出处
《合成技术及应用》
2014年第1期58-60,共3页
Synthetic Technology & Application
关键词
液晶中间体
3
4
5-三氟苯酚
惰性溶剂
共沸精馏
纯化
liquid crystal intermediate
3,4,5-trifluorophenol
inert solvent
azeotropic distillation
purification
