【摘要】 本文介绍了由固体农用尿素制备缩二脲的试验研究,考察并分析了缩二脲产率与反应温度和反应时间的关系,初步确定实验室制备缩二脲的较佳工艺条件,同时对粗品的分离与提纯方法进行了探讨,在试验条件下,可获得纯度为99.8％的缩二脲产品。更多还原

【Abstract】 A prcsscntation is offered of the experimental researches on the making of biurct from solid agricultural urea. Examination and analysis arc carried out of the relationship of the biurct yield with reaction temperature and with time . A preliminary dctcrmintion is made of compartivcly desirable conditions for making biurct in laboratories and a discussion is conducted of the methods for the separation of crude products and purification. Under laboratory conditions, a purity qucticnt of 99.8% can be achieved of biurct products更多还原