High quality supply Tetraethylammonium tetrafluoroborate

Synthesis and refining of Tetraethylammonium fluoroborate or TEATFB(Et4NBF4) cas:429-06-1: Weigh 25g of Tetraethylammonium chloride and 50g of butanol and add them to a polytetrafluoroethylene reactor. Slowly add a fluoroboric acid aqueous solution dropwise at 30 ℃ for 2 hours, then raise the temperature to 40 ℃ and continue the reaction for 2 hours. After the reaction is complete, concentrate under reduced pressure, add 25g of butanol at room temperature, stir for 2 hours for crystallization, filter, and wash with butanol to remove impurities from the mother liquor. The obtained wet powder is tetraethylammonium fluoroborate 40g. Place the tetraethylammonium fluoroborate wet powder in a container with a condensation reflux device containing 150ml of ethanol solution, heat it up and boil it, and cool it to room temperature while stirring until the solid is completely dissolved. Crystallization and filtration were carried out at room temperature, followed by washing with ethanol solution at room temperature. The recrystallization process was repeated twice and dried under vacuum to obtain 21, The qualified tetraethyl ammonium tetrafluoroborate product(cas:429-06-1) has a yield of 64.2% (mol).