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Ammonium Fluorosilicate
Molecular formula:
(NH4)2·SiF6
Molecualr weight:
178.14
Properties:
Colorless crystle powder, soluble in water and alcohol. It has α and β two configuration, α is isometric system, β is triclinic system, stable in air, but when the β configuration is heated for a long time, its own crystle system break, then converted to α configuration powder. The two states can be soluble in water and ethanol, not soluble in propanol.
Usage:
anti-moth agent, disinfectant for wine industry, glass etchant, anti-moth agent for textile, also used for light-metal casting, electroplating, used in artificial cryolite and producing ammonium chlorate etc.
