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[Determination of silicon dioxide in colloidal silica]
1Laboratoire des Gaz de l'Université René Descartes, Paris.
Annales Pharmaceutiques Francaises
|January 1, 1992
Abstract:
This is made without using hydrofluoric acid. The dissolution of silicas is carried out by ammonium fluoride in aqueous solution with potassium chloride. The potassium fluosilicate obtained is then isolated; its mass corresponds to 3,666 x SiO2. The values obtained corroborate the validity of this method.