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公开(公告)号:USRE38856E1
公开(公告)日:2005-10-25
申请号:US10279502
申请日:2002-10-24
IPC分类号: C07C22/00 , C07C231/12 , C07C233/00 , C07C237/46
CPC分类号: C07C231/12 , C07C237/46
摘要: The invention provides a process by which ultra low salt content triiodinated aromatic compounds may be isolated from a highly acidic hot triiodination raction reaction medium in a straightforward fashion. The process involves increasing the pH to above 5 a value in the range of 3 to 7 with sodium hydroxide, addition of sodium bisulphite and/or sodium dithionite, addition of seed crystals, cooling slowly, and washing the collected precipitate with water.
摘要翻译: 本发明提供了一种可以从高度酸性的热三碘化物中分离出超低盐含量的三碘化芳族化合物的方法。<βdelete-start id =“DEL-S-00001”date =“20051025”?> raction <?delete-end id =“DEL-S-00001”?> <?insert-start id =“INS-S-00001”date =“20051025”?> reaction <?insert-end id =“INS-S-00001”?> 以直截了当的方式。 该过程包括将pH增加到<?delete-start id =“DEL-S-00002”date =“20051025”?> 5以上<?delete-end id =“DEL-S-00002”?> <? start id =“INS-S-00002”date =“20051025”?> 3〜7的范围内的值??????????? 和/或连二亚硫酸钠,加入晶种,缓慢冷却,并用水洗涤收集的沉淀。