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Description:Chemical Name: Sodium Tetraborate Anhydroous Molecular Formula: Na2B4O7 Molecular Weight: 201.22 Physical Character: White crystal glass A Orthorhombic, Melting Point: 742.5°C, Density: 2.28 B Orthorhombic, Melting Point: 664°C, Density: 2.75 Intensive moisture absorption, soluble in water, slowly soluble in methanol, and can form the solvent of concentration of 13 - 16% Usage: For producing high quality glass, optical glass, have the property of heat resistant Used as glaze in enamel industry Used as the fluxing agent on metal or alloy surface Specifications: 1) Sodium Tetraborate Anhydroous (%): 95~98min 2) Sodium Oxide (%): 30 min 3) Boron Trioxide (%): 66~68min