论文部分内容阅读
磺胺甲基嘧啶(sulfamerazine简称SM_1)成品,在澄明度检查时经常出现溶液呈红色的异常现象,成为提高产品质量重要问题之一。经实验证明,SM_1酸溶液发红的原因,是由于SG和丁酮缩醛缩合时,缩醛在浓碱下,受到破坏,发生了树酯化的副反应,这种树脂副产物,在碱性溶液中,成为半固体状物存在,因此在酸碱精制过程中,不易除掉,而混入成品,遇強酸时,它与SM_1作用产生红色,
Sulfamerazine (SM1) finished products often appear in the clarity of the inspection solution was red anomalies, as to improve product quality, one of the important issues. The experiment proved that, SM_1 acid solution red is due to the condensation of SG and butanal acetal, acetal in concentrated alkali, destroyed, the occurrence of a side reaction of esterification, the resin by-product, in the alkali Sexual solution, a semi-solid exist, so the acid-base refining process, not easy to get rid of, and mixed with finished products, case of strong acid, it SM1 role with the red,