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1香草醛硫酸溶液怎么配制

更新时间: 2020-10-03 00:00:00     

1、称取1g香草醛用高氯酸溶解;

2、配制的时候要小心,先少量的润湿溶解,然后在加至100毫升刻度,注意自我保护;

3、香草醛一般与浓硫酸配合使用。香草醛浓硫酸显色原理是使羧基脱水,增加双键结构,再经双键位移,双分子缩合等反应生成共轭双键系统,又在酸作用下形成阳碳离子盐而显色。

关键词: 香草醛 硫酸 溶液 怎么 配制

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