Purity: 98% ,red odd inclined crystal ,use for making cobalt oxide and cobalt metal ,and Used as glass and ceramics colorants Analysis(%)Co : 24.3Pb : 0.001Ni : 0.001Zn : 0.001Fe : 0.001Cd : 0.001Cu : 0.001SO4 : 0.02Mn : 0.001Ca : 0.0014As : 0.001Mg : 0.001Na : 0.001 water-fast : 0.01 In industry: main use is making cobalt oxide and cobalt metal for alloy materials of electronic materials, a ...