甲基异脲酸式硫酸盐的制备  

Preparation of Crystalline O Methylisourea Hydrogen Sulfate

作　　者：邢存章[1] 孙昌俊[2] 

机构地区：[1]山东轻工业学院化工系,山东济南250100 [2]山东大学化学系,山东济南250100

出　　处：《精细化工》2000年第2期97-99,共3页Fine Chemicals

基　　金：山东省自然科学基金!资助项目(Y95B0417)

摘　　要：向硫酸二甲酯和尿素的反应产物中，依次添加浓硫酸和异丙醇，ｎ（ＣＨ３ＯＳＯ２ＯＣＨ３）∶ｎ（Ｈ２ＮＣＯＮＨ２）∶ｎ（Ｈ２ＳＯ４）∶ｎ（ＣＨ３ＣＨＯＨＣＨ３）＝１∶１∶１－２∶１－９７，控制温度不超过４０ ℃；０ ～５ ℃下静置１５ ｈ，析出白色固体甲基异脲酸式硫酸盐。产品收率６０％ ，纯度达９８％ 以上。The preparation of crystalline O methylisourea hydrogen sulfate was studied.98% H\-2SO\-4 and isopropyl alcohol were added successively and slowly into the liquid reaction product of dimethyl sulfate and urea below 40 ℃.This mixture was cooled at 0-5 ℃ for 15 h,and the crystalline product was precipitated,filtrated and dried under vacuum.A yield of 60% and a pruity of 98 6% were given.

关 键 词：甲基异脲酸式 硫酸盐 制备 碳酸 

分 类 号：TQ225.53[化学工程—有机化工]