melting point

The structure and working principle of the devices for melting point measurement by means of thin film comparative method of cryoscopy were introduced.

介绍凝固点下降薄层比较法测量熔点标准物质熔点的测量装置的构成与工作。

Nonnatural amino acid 3-(4-thiazolyl)-D,L-alanine hydrochloride and its four intermediates were synthesized, their structures were detenmined by IR,NMR,elementary analysis and melting point.

成了非天然氨基酸3-(4-唑基)-D，L-丙氨酸盐酸盐个中间体，其结构分别通过红外光谱、核磁共振、元素分析、熔点等测试手段得到确证。