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limeng2317金虫 (小有名气)
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[交流]
急求翻译(汉译英0
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请大侠们帮忙翻译下:取新蒸馏的水杨醛12.2g溶于适量的无水乙醇中,在搅拌下将20%的Br2-CCl4溶液45ml缓慢滴加到水杨醛的乙醇溶液中,反应温度控制在12-15℃。滴加完毕后继续搅拌45分钟,室温放置两小时,析出白色沉淀,抽滤,用无水乙醇洗涤数次,得到白色晶体。 谢谢谢谢! |
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limeng2317(金币+2,VIP+0): 11-26 16:54
zap65535(金币+4,VIP+0):补发 12-22 00:34
limeng2317(金币+2,VIP+0): 11-26 16:54
zap65535(金币+4,VIP+0):补发 12-22 00:34
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没人帮忙吗,我来试试。 To dissolve 12.2 g newly-distilled salicylaldehyde into appropriate amount absolute ethanol, and then slowly drop 45 ml Br2-CCl4 solution with concentration of 20% into the as-prepared salicylaldehyde solution accompanied by stirring with the temperature kept between 12-15 degree. After that, continue to stir the solution for 45 min followed by keeping it at RT for 2h until the white deposition separates out. Extract the deposited material and wash them with absolute ethanol several times to obtain the white crystals. |
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