The synthesis of acetylsalicylic acid from salicylic acid and acetic anhydride,using P-toluene sulphonic acid as catalyst was studied.

• 以水杨酸和乙酸酐为原料,采用对甲苯磺酸作催化剂合成了乙酰水杨酸,采用正交实验法研究了影响反应的因素。