1,Zinc Carbonate Basic 2,56.5%/57%/57.5% etc 3,Manufacturer and exporter 4,ISO and SGS 5,Used in Skin protective agent e The Zinc Carbonate Grade: 57.5%, 57.0%, 56.5%, etc. Molecular Formula: ZnCO3•2Zn(OH)2•H2O Molecular Weight: 324.15Property: White or yellowish fine amorphous powder, smell-less, tasteless. The proportion is 4.42-4.45, does not dissolve in water and alcohol, slightly soluble in ...