采用“固定冷浴温度、局部过冷、密封样品管、机械搅拌”的方法进行溶剂或溶液凝固点测量 ,与传统方法相比 ,它具有操作简单、结果准确、重现性好的优点 .以苯作溶剂、萘为溶质进行了多次测定 .结果表明 ,萘摩尔质量测定的相对误差均在 1 %以内 Compared with the traditional method, it has the advantages of simple operation, accurate result and good reproducibility by adopting the method of “fixed cooling bath temperature, partial subcooling, sealed sample tube and mechanical stirring” As solvent and naphthalene as solute.The results showed that the relative errors of naphthalene molar mass determination were within 1%