Boric Anhydride

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Boron trioxide is a colorless, semi-transparent glassy lumps or hard white odorless crystals. Mp 450°C, bp: 1860°C. Density: 2.46 g/cm3. Moderately soluble in water. Used as an insecticide, as the starting material for the synthesis of other boron compounds, as a fluxing agent in enamels and glasses, and in mixture with 2-6% boron nitride, as a bonding agent in the hot isostatic pressing of boron nitride ceramics. Reagent for the decomposition of silicates by fusion. Formula B2O3 Molar mass 69.6182 g/mol CAS Number 1303-86-2 Density 2.46 g/mL at 25°C (77°F) Purity/Grade ≥98% puriss. p.a. Appearance White crystalline Melting point/freezing point 450 °C (842°F) pH 5.46 at 25°C (77°F)””


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