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什么是缩二脲反应

更新时间: 2020-09-17 00:00:00     

缩二脲反应是在缩二脲的碱溶液中加入少量的硫酸铜稀溶液,溶液呈紫红色或者红色。缩二脲是白色长片形结晶,无气味,有吸湿性,水中结晶者含4分子结晶水。在约110摄氏度时失水,193摄氏度时分解,温度高于193度时成三聚氰胺。易溶于乙醇,微溶于乙醚。

关键词: 什么 反应

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