熔点测定装置的改进  

Improvement of determination of melting point device

作　　者：孙德军[1] 张秀华[1] 

机构地区：[1]大庆师范学院化学化工学院,黑龙江大庆163712

出　　处：《实验室科学》2014年第6期36-39,共4页Laboratory Science

摘　　要：熔点是化合物十分重要的属性,测定物质熔化时的温度是大学有机化学实验非常基础的项目。测定熔点的方法也有很多,总结以往所使用的测定熔点的方法,都会有一些不足。我们对熔点的测定装置进行了改进,采用电加热的装置,以空气为介质来传导热量,通过调节电压缓慢增加环境温度,使熔点的测定有了很好的效果,操作更加简便,实用性更强,实验误差小,节约了成本,实验的整个过程中达到了绿色环保。Melting point is an important property for compounds, therefore, it＇s very indispensible to record it in the basic chemistry experiment. There are many ways but with drawbacks when dealing with it. By operating with electro-thermal treatment which uses air dielectric to transfer the increasing heat gradually thanks to the regular change of power line voltage. What＇s more, in this way we can not only have a good effect and more esy to operate, but also with more convenience, small expermental error and low test cost. Meantime, it also makes our chemical experiment a green environmental process.

关 键 词：有机化学 熔点 装置改进 电压 

分 类 号：O6-32[理学—化学]