紫銅(tong)(tong)(tong)又名(ming)紅(hong)銅(tong)(tong)(tong)就是銅(tong)(tong)(tong)單質，因其顏色為(wei)紫紅(hong)色而得名(ming)。各種(zhong)性(xing)質見銅(tong)(tong)(tong)。紫銅(tong)(tong)(tong)是工業純銅(tong)(tong)(tong)，其熔(rong)點(dian)為(wei)1083℃，無(wu)同(tong)素(su)異構轉變(bian)，相(xiang)對密度為(wei)8.9，為(wei)鎂的(de)五倍。同(tong)體積(ji)的(de)質量比普(pu)通鋼(gang)重約(yue)15%。因其具有玫瑰紅(hong)色，表面形成氧化膜(mo)后呈(cheng)紫色，故一般稱為(wei)紫銅(tong)(tong)(tong)。它是含(han)有一定氧的(de)銅(tong)(tong)(tong)，因而又稱含(han)氧銅(tong)(tong)(tong)。