fluosilicicn.
/ˌfluːəʊsᵻˈlɪsɪk/, U.S. /ˌfluoʊsəˈlɪsɪk/ fluosilicic acid n. a corrosive acid, known only in aqueous solution, produced by the reaction of hydrofluoric acid on silica and other silicon compounds.Formula: H2SiF6.
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fluosilicic acid1817
silicic acid1817
silicomolybdic acid1871
1817 T. Thomson Syst. Chem. (ed. 5) II. 273 This seems to indicate a compound of 2 atoms fluosilicic acid with 1 atom of ammonia.
1868 C. W. Eliot & F. H. Storer Man. Inorg. Chem. (ed. 2) xxii. 389 The clear liquid is a strong aqueous solution of fluosilicic acid.
1922 T. M. Lowry Inorg. Chem. xxiv. 302 The fluorine is..set free, not as hydrofluoric acid, but in the form of a silicifluoric or fluosilicic acid, H2SiF6.
1971 Jrnl. Water Pollution Control Federation 43 1027/1 Yawata Iron and Steel Co., Ltd., obtained a patent on the treatment of waste acid used for pickling Si-steel which contains HF and fluosilicic acid.
2010 P. G. Juan et al. in A. Tressaud Functionalized Inorg. Fluorides vii. 206 Processes based on the use of fluosilicic acid from phosphate rock have not yet gone beyond the development stage.
This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022).
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