[Determination of silicon dioxide in colloidal silica].
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.
Chaigneau
M
M
Laboratoire des Gaz de l'Université René Descartes, Paris.
Chastagnier
M
M
D008722:Methods; D015203:Reproducibility of Results; D012825:Silicon / Q000737:chemistry*
D012825:Silicon
Sur le dosage du dioxyde de silicium dans les silices colloïdales.