fuming sulfuric acid

基本解释

Results:In the esterification step, fuming sulfuric acid was used;
结果：酯化时使用发烟硫酸；
The PS water reducing agent, which is very effective for concrete, has been made from waste poly styrene(WPS) by sulfuric acid of fuming sulfuric acid sulfonation process.
以废聚苯乙烯（WPS）泡沫为原料，采用浓硫酸和发烟硫酸两种磺化方法制备性能良好的砼减水剂。
The sample is dissolved in nitric and fluoric-hydro acid adding sulfuric acid, and heating up to fuming, then the matrix element titanium is separated with sodium hydroxide.
试样用硝酸—氢氟酸溶解，硫酸冒烟后强碱分离钛、铁、镍离子，其余干扰离子用酒石酸钾钠掩蔽。

发烟硫酸
caprolactam is the monomer of manufacturing nylon-6,it is prepared through Beckmann rearrangement of cyclohexanone oxime by concentrated or fuming sulfuric acid in industry.
己内酰胺是制造尼龙 -6的单体 ,工业上一般用环己酮肟在浓硫酸或发烟硫酸作用下进行贝克曼重排制得 ,此法存在腐蚀设备和成本高等缺点。
医药科学
发烟硫酸