乙醇
乙醇，醇類也，式CH3CH2OH。乃酒之主，故亦俗曰酒精、醇酒，亦可謂曰火酒。人以久則知以糖而得乙醇也，易燃液體也，燃於氧則得水、炭養。可殺菌也，常以醫用酒精，四之有三乙醇也，不以純乙醇者，生保護層於細菌外，護細菌，不若醫用酒精，可殺細菌也。乙醇乃之常見有機溶劑也，可溶鹵素，亦可溶烴。乙醇與乙酸混，炙之而並濃硫酸，可得乙酸乙酯，頗具異香。
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