acidation

Acetylsalicylic acid was synthesized from salicylic acid and acetic anhydride catalyzed by chloride acidation bentonite.

以水杨乙酐为原料,在自制润土催下合成了阿司匹林;

Using surface fermentation method to produce apple vinegar,its acidation and alcoholization is the same as liquid deep fermentation method.

表面发酵法生产苹果醋,其酒醋过程与液态深层发酵法相同,但发酵周期较长。