天气预报 > 其他 > 1香草醛硫酸溶液怎么配制
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

1香草醛硫酸溶液怎么配制相关经验

天气预报

最新推荐

页面:/news/view-2169129/ | 耗时:0.2952 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=2169129 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2169129 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2169129 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1080404,1104280,1130746,1127041,1093589,1051419,1111934,1131077,1055640,1129123,1062692,1070480,1113514,1062752,1094795,1058075,1130220,1076193,1075807,2411300,1071105,1113528,1062582,1113141,1081381,1484894,960752,1121172,1062116,1098489) ORDER BY field (ArticleID,1080404,1104280,1130746,1127041,1093589,1051419,1111934,1131077,1055640,1129123,1062692,1070480,1113514,1062752,1094795,1058075,1130220,1076193,1075807,2411300,1071105,1113528,1062582,1113141,1081381,1484894,960752,1121172,1062116,1098489)