a1830 F. LunnChem. in Encycl. Metrop. (1845) IV. 656/1 The compounds of silicon and boron, being also Acids, [should] be called silico-fluoric and boro-fluoric Acids.
1868 Fownes's Chem. (ed. 10) 368Silicofluoric acid gives a white precipitate with barium salts.