... Used in preparing cobalt salts, pigment and ceramic glaze,also used as oxidant and catalyzer. And it ... or Co2O3Molecular weight:74.93 or 165.88Property: grey black powder,density:5.18g/cm3,it is decomposed into ... area:Used in preparing cobalt salts, pigment and ceramic glaze,also used as oxidant and catalyzer. And it is ... material and colorant for some pigments. Cobalt Oxide Black 72% Ceramic color