... 5 5.Density: 5.606 High-purity and Ultra-fine Zinc OxideAppearance: white or light yellow Powder Melting Point: ... Properties:White hexagonal system crystalloid or powder, tasteless, nontoxic, fine particle. It is amphoteric oxide, soluble in acid, NaOH, ... .05 Burnt loss,% ≤0.20.20.2 Screening residues(45μm) ,% ≤0.100.150.200.100.150.20Soluble ... on to be used. High-purity and Ultra-fine Zinc Oxide