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nature : BF3 colorless asphyxiating gas. Density 2.99. -126.8 ° C melting point. The boiling point -100 ° C Dissolved in water, hot water hydrolysis. Also in ethanol decomposition. Easy with ether to form a stable complex BF3 (C2H5) 2O, colorless liquid at 125 ° C for boiling, in the air, smoke, use organic synthesis. When water is fluoride boron partial hydrolysis, the glass can play corrosive effect, and allowing wet litmus redden. Organic Synthesis Catalysts used. From the boron compound with fluorine directly, or by boron oxide and carbon mixture of fluoride in heating and air flow in the system.
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