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- 2018
盐酸赛庚啶的结晶研究
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Abstract:
摘要 目的:研究盐酸赛庚啶的晶型.方法:运用自然结晶和快速结晶方法制备盐酸赛庚啶的晶型,经X射线衍射分析法(PXRD)、差示扫描热分析法(DSC)、热重分析(TG-DTA)等方法对盐酸赛庚啶的多种晶型进行表征.结果:通过调节溶剂和结晶方式得到盐酸赛庚啶的4种晶型,经检测发现盐酸赛庚啶溶解于热的甲醇溶液自然结晶得到晶型Ⅰ,快速结晶得到晶型Ⅱ;当溶剂采用无水乙醇时得到晶型Ⅲ和Ⅳ.结论:Ⅰ~Ⅳ型盐酸赛庚啶的理化性质存在明显差异,最终以甲醇为溶剂,快速结晶制备出了新晶形Ⅱ,晶形Ⅱ熔点最高、融化吸收热量大,具有较好的稳定性,并且晶型纯度高.
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