用Thiele管测定升华物质碘的熔点

METHOD TO MEASURE THE MELTING POINT OF SUBLIMATING IODINE WITH THIELE TUBE

就如何用Thiele管测定升华物质进行了较深入的阐述，以单质碘为例，说明了测定时不能象以往方法而需改进的问题．对三相点的变化过程及其校正等问题进行了讨论，提出了实验中应关键注意的问题。

The method to measure the melting point of sublimating material is illustrated in detail. Taking pure iodine as example, some problems need to be improved in measuring, Which could not be treated as usual, are discussed. The changing process of tri-phase point and its revising are discussed as well. Some cautions in experiment are pointed out.