Zinc Borate 3.5 H2O 1)MF: 2ZnO 3B2O3 3.5H2O 2)Purity:ZnO:37-40%;B2O3:46-49%. 3)Appearance:White Powder 4)Package:25kgs/bag Zinc Borate 3.5H2O1)Physical and Chemical Properties:Molecular Formula: 2ZnO 3B2O3 3.5H2OMolecular Weight 434.68Appearance: white crystal powderRelative Density: 2.67Melting Point: 980Toxicity: 1g/KgIndex of Refraction: 1.582)Usage:At present countries over the world ...