Because of all these disvantages acetylchloride is used to react with absolute ethyl alcohol and synthesize ethyl acetate.
鉴于传统方法存在以上缺点,采用乙酰氯代替乙
原料,不使用任何催化剂,不加热,常温反应来合成乙乙酯。
Because of all these disvantages acetylchloride is used to react with absolute ethyl alcohol and synthesize ethyl acetate.
鉴于传统方法存在以上缺点,采用乙酰氯代替乙原料,不使用任何催化剂,不加热,常温反应来合成乙乙酯。
Xanthoxylin was extracted from Zanthoxylum Bungeanum Maxim of Sichuan Hanyuan using absolute ethyl alcohol, ether, acetone and water as solvent.
采用无水乙醇、乙醚、丙酮及水溶剂,
四川汉源花椒了精油提取研究。
Methods Infrared spectrophotometry with potassium bromide tabletting was adopted,in which the extract was carried out with the absolute alcohol as the solvent.
方法以无水乙醇溶剂进行提取,采用红外分光光度法(溴化
)进行定性鉴别。
Results Implantable chemotherapy pump by transcatheter right gastroepiploic artery(RGEA) in 3 cases and tumors absolute alcohol injection in 7 cases were operated successfully by laparoscopy.
结果3例腹腔镜下胃网膜右动脉置入化疗泵和7例无水乙醇注射均成功,肿瘤区域显影良好,无副损伤和并发症,患者早期恢复顺利。
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