... , printing & dyeing, magnetic, electronics, fodder, picture tube, etc. Zinc oxide of indirect method Molecular formula:ZnO Molecular weight:81.38 ... melting point of 1975oC. It is a kind of amphoteric oxide. , dissolving in acid, alkali, ammonium chloride and ammonia water ... typeCoating typeSuper gradeTop-gradeFirst gradeTop-grade First grade Zinc oxide(Zn0 calculating as dry material)%≥99.999.799.599. ...