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      水楊酸

      水楊酸是一種脂溶性的有機酸,化學式為C7H6O3。外觀是白色的結晶粉狀物,熔點是158~161℃。存在于自然界的柳樹皮、白珠樹葉及甜樺樹中,是重要的精細化工原料,可用于阿司匹林等藥物的制備。

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