Boric Acid → HCID 86613215, compound

Participants

Reaction Steps

631 g (2.0 mol) of Ba(OH)2 (octahydrate) and 123.6 g (2.0 mol) of boric acid are suspended in 500 ml of water at 60° C. 208 g (1.0 mol) of 1-methyl-3-ethylimidazolium hydrogensulfate are added dropwise to this mixture over a period of 60 minutes. After addition of a further 500 ml of water, the precipitated BaSO4 is filtered off using Celite as filter aid and washed with water. After addition of n-butanol, the water is removed on a rotary evaporator and the residue is dried under reduced pressure to give 247.2 g (1.44 mol) of 1-methyl-3-ethylimidazolium dihydrogenborate (yield: 72%, melting point: 40° C.).

Provenance & Evidence