甲醛溶液长期放置后,生成多聚甲醛的白色固体。一般认为甲醛在水溶液中是以水合物形式存在的,这些水合物失去缩合即生成链状的多聚甲醛。 Template




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tomski甲醛溶液长期放置后,生成多聚甲醛的白色固体。一般认为甲醛在水溶液中是以水合物形式存在的,这些水合物失去缩合即生成链状的多聚甲醛。 coloring