氯(lv)(lv)化(hua)铜(tong)(tong)化(hua)学(xue)式为(wei)CuCl2，为(wei)黄棕色(se)粉末(mo)，相对密度为(wei)3.386(25℃)，熔点为(wei)620℃，0℃时溶解(jie)(jie)度为(wei)70.6，还易溶于(yu)乙醇(chun)和(he)丙酮(tong)。易从空气(qi)中吸湿(shi)而变成蓝绿色(se)二水(shui)(shui)合(he)物(wu)CuCl2·2H2O，CuCl2·2H2O为(wei)绿色(se)斜方晶体，有潮解(jie)(jie)性，相对密度为(wei)2Chemicalbook.38，可将氯(lv)(lv)气(qi)和(he)水(shui)(shui)通入装有金属铜(tong)(tong)的接触塔来制备，或用(yong)碳酸(suan)(suan)铜(tong)(tong)(实际是碱式碳酸(suan)(suan)铜(tong)(tong))和(he)盐酸(suan)(suan)作用(yong)制取。此(ci)水(shui)(shui)合(he)物(wu)在(zai)(zai)110℃失(shi)水(shui)(shui)，在(zai)(zai)氯(lv)(lv)化(hua)氢气(qi)流(liu)中、加热(re)到140～150℃的条件下，也(ye)可制出无(wu)水(shui)(shui)氯(lv)(lv)化(hua)铜(tong)(tong)。无(wu)水(shui)(shui)氯(lv)(lv)化(hua)铜(tong)(tong)进(jin)一步加热(re)到993℃，可分(fen)解(jie)(jie)为(wei)白色(se)氯(lv)(lv)化(hua)亚铜(tong)(tong)和(he)氯(lv)(lv)气(qi)。