一氯甲烷（CH3Cl）是中学化学教材中接触到的三种气态烃的衍生物（CH3Cl、CH2O、CH2=CHCl）之一。一氯甲烷的制取方法在一般有机化学实验资料中很难查到，笔者根据甲醇与氯化氢发生取代反应，在用无水ZnCl2作催化剂的情况下，很容易制得中学难以制取的一氯甲烷气体。其反应式为 Chlorochloromethane (CH3Cl) is one of the three gaseous hydrocarbon derivatives (CH3Cl, CH2O, CH2=CHCl) exposed in the chemistry textbook for middle schools. The preparation method of methyl chloride is difficult to find in general organic chemistry experimental data. According to the substitution reaction between methanol and hydrogen chloride, the author used the anhydrous ZnCl2 as a catalyst to easily obtain a chlorine that is difficult for secondary school to obtain. Methane gas. The reaction is