无水硫酸铜为什么不能做干燥剂?

2025-04-08 01:31:38
推荐回答(1个)
回答(1):

无水硫酸铜做干燥剂具有非常良好的效果。
无水硫酸铜为白色或灰白色粉末。电瓶硫酸市场调研报告提到,无水硫酸铜在潮湿空气中易潮解,吸湿性很强。胆矾经过加热脱水处理后的白色粉末,一遇水变蓝,通常实验用作证明有无水分存在。
五水硫酸铜在常温常压下很稳定,不潮解,在干燥空气中会逐渐风化,加热至45℃时失去二分子结晶水,110℃时失去四分子结晶水,150℃时失去全部结晶水而成无水物。无水物也易吸水转变为五水硫酸铜。常利用这一特性来检验某些液态有机物中是否含有微量水分,也可以作为干燥剂干燥水分。

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