What is "fluoroboric acid"

n. (context inorganic compound English) The acid HBF₄ that is used as a catalyst in organic chemistry

n. an acid of fluorine and boron

Fluoroboric acid or tetrafluoroboric acid is an inorganic compound with the chemical formula .

It is mainly produced as a precursor to other fluoroborate salts. It is a strong acid. Fluoroboric acid is corrosive and attacks the skin. It is available commercially as a solution in water and other solvents such as diethyl ether. With a strength comparable to nitric acid, fluoroboric acid is a strong acid with a weakly coordinating, non-oxidizing conjugate base. It is structurally similar to perchloric acid, but lacks the hazards associated with oxidants.