cupric oxide 1))factory price 2)Port nearby advantage 3)good service cupric powder Character Cupric Oxide is the black non-finalize design powder or crystallize, pellet (monophase powder) with density 6.313, melting point 1446°C, melting rate 11.80KJ/mol, hardness 3.4, dielectric constant 18.10. It doesn’t dissolve in water, but dissolves is in acid, ammononia water, ammonium chloride, then turns ...