结晶尿素
结晶尿素-
结果：水飞蓟宾在PVP中以无定型存在，在泊洛沙姆188中以微细结晶存在，在尿素中大部分仍以晶体形式存在，少量以分子状态存在。
Results : In PVP silibinin solid dispersions drug was amorphous ; in poloxamer 188 silibinin solid dispersions , drug existed as fine crystal , while in urea silibinin solid dispersions most of silibinin existed as crystal , only a little as molecule .
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目前，工业上生产三聚氰胺的主要方法是用水作冷淬结晶分离剂的尿素法。
Presently the main production method of melamine is urea method using water as chilling , purifying and separating agent .