It may be prepared by the action of hydrofluoric acid upon lime, as directed under Barium, Fluoride of.
Cooley's Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I|Arnold Cooley
The preparation of fluorine was finally accomplished by the French chemist Moissan by the electrolysis of hydrofluoric acid.
An Elementary Study of Chemistry|William McPherson
Cupric fluoride, CuF2, is obtained by dissolving cupric oxide in hydrofluoric acid.