With the mole ratio of p - toluic acid and uren to be 1: 1 .6 and sectionalization heated - shielded,the product yield is 75.6% .
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释义
当对甲苯甲酸与尿素的摩尔比为1:1.6,采用分段保温的加热方式,产品收率达75.6%25。
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