CCl4是一种重要的有机溶剂,在中学化学实验中常用作萃取剂。利用其物理性质,也可在其它实验中加以应用。实验一:钠与苯酚的反应苯酚在通常温度下是固体,与钠很难顺利发生反应。有的老师采用加热溶解苯酚,再加入金属钠的方法进行实验,其弊端是苯酚易被氧化,在加热时苯酚颜色发生 CCl4 is an important organic solvent and is often used as an extractant in middle school chemistry experiments. With its physical properties, it can also be applied in other experiments. Experiment 1: Reaction of Sodium with Phenol Phenol is a solid at normal temperatures and it is difficult for sodium to react smoothly. Some teachers use the method of heating and dissolving phenol and then adding sodium metal. The disadvantage is that phenol is easily oxidized and the color of phenol occurs when it is heated.