天气预报 > 其他 > 焦磷酸二氢二钠是什么
焦磷酸二氢二钠是什么
更新时间: 2020-11-16 00:00:00  

焦磷酸二氢二钠的理化性质是白色结晶性粉末,相对密度1.862,加热到220℃以上分解成偏磷酸钠。易溶于水,可与Cu2+、Fe2+形成螯合物,水溶液与稀硫酸稀无机酸加热水解成磷酸。来源与制法是磷酸二氢钠加热到200℃脱水制得;或在磷酸中加入碳酸钠,再加热到200℃经过脱水制得。

分子式为Na2H2P2O7,分子量为221.94。

关键词: 磷酸 什么

焦磷酸二氢二钠是什么相关经验

天气预报

最新推荐

页面:/news/view-2384326/ | 耗时:0.7222 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=2384326 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2384326 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2384326 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1091267,1076764,1112398,1072591,1091097,1100623,1104847,1070330,1075526,1067880,1120410,1054612,1123693,1072443,1077182,1028715,1085480,1051683,1061518,1068150,1097097,1100033,1081241,1096751,1065683,1065697,1126388,1070939,1070997,1067924) ORDER BY field (ArticleID,1091267,1076764,1112398,1072591,1091097,1100623,1104847,1070330,1075526,1067880,1120410,1054612,1123693,1072443,1077182,1028715,1085480,1051683,1061518,1068150,1097097,1100033,1081241,1096751,1065683,1065697,1126388,1070939,1070997,1067924)