Sodium fluosilicate (English name: Sodiumfluosilicate) is an inorganic compound with a chemical formula of Na2SiF6 and a molecular weight of about 188.06. Usually

White or light yellow crystalline solid, odorless, 2.679 specific gravity.

White tetragonal crystals or powder, odorless; density 2.662 g/cm³.It is almost insoluble in cold water and decomposes in hot water; it dissolves slowly in strong acids such as hydrochloric acid, but is insoluble in ethanol and acetone.. Stable at room temperature; decomposes at high temperatures (>300°C), releasing toxic silicon tetrafluoride fumes and forming calcium fluoride and silicon dioxide; undergoes decomposition in the presence of bases.

Colorless or white rhombic/needle-like crystals, odorless; relative density 1.788.It is not easily deliquescent, but it readily weathers and loses its water of crystallization.;Soluble in water and dilute acids, sparingly soluble in hydrofluoric acid, insoluble in ethanol; the aqueous solution is weakly acidic. It decomposes upon dehydration at temperatures above 80°C, releasing silicon tetrafluoride gas; it reacts with bases to form fluorides and silicon dioxide. Dust irritates the skin, ocular mucosa, and respiratory tract; it is toxic.

Colorless prismatic crystal or white crystalline powder, relative density 2.104;Easily soluble in water, soluble in inorganic acid, insoluble in ethanol; 1% aqueous solution pH ≈ 3.2, weakly acidic. Heating to 100 DEG C decomposition, release silicon tetrafluoride gas, zinc fluoride and water generation. Moisture absorption, dust to stimulate the skin, eye mucosa and respiratory tract, toxic.

0-2 is white crystalline powder odorless and tasteless rate 2665a/mlat25 C

Potassium fluosilicate is an inorganic compound with the chemical formula K2SiF. English name Dipotassium hexafluorosilicate,CAS No. 16871-9