The present invention relates to
hydronium stabilized
silicic acid nanoparticles, to the formulation obtained from the said diluted suspension, to the
powder obtained from the said dehydrated suspension and to the preparation or
dosage form obtained from the said suspension, formulation or
powder, to their preparation and their use in all kinds of applications in the domains of food,
medicine,
pharmaceutics,
cosmetics. The present invention provides a stable suspension of colloidal
silicic acid nanoparticles having a pH lower than 0.9, a
molar silicon concentration between 0.035 and 0.65, a
free water concentration of at least 30% (w / v) and a ratio between
hydronium ion and Si
molar concentrations higher than 2 and preferably inferior to 4. The present invention further provides a method for preparing a stable suspension of colloidal
silicic acid nanoparticles, which comprises the steps of providing an aqueous inorganic or organic
silicon solution and quick mixing said aqueous inorganic or organic
silicon solution with water containing a strong acidic compound at a temperature inferior at 30° C., preferably comprised between 1 and 25° C., to form a suspension of colloidal
silicic acid nanoparticles having a pH lower than 0.9, stabilized by
hydronium ions, the ratio between hydronium ions and Si
molar concentrations being higher than 2 and preferably inferior to 4, for a molar silicon concentration between 0.035 and 0.65 and a
free water concentration of at least 30% (w / v).