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如何鉴别95的乙醇和无水乙醇
更新时间: 2020-09-16 00:00:00  

鉴别方法:

1、采用无水硫酸铜。无水硫酸铜为白色或灰白色粉末。溶液呈酸性,粉尘刺鼻性很强。溶于水及稀的乙醇,而不溶于无水乙醇。

2、无水乙醇遇无水硫酸铜不会明显变色。但是百分之九十五的酒精水分较多,遇无水硫酸铜明显变蓝色。

3、用精细的物理方法测定密度和标准密度进行对比。

关键词: 如何 鉴别 乙醇

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