Sodium fluorosilicate
Sodium fluorosilicate is a compound with the chemical formula Na2.Sodium hexafluorosilicate occurs naturally as the rare mineral malladrite found within some volcanic fumaroles.Manufacturing
Sodium fluorosilicate is made by neutralizing fluorosilicic acid with sodium chloride or sodium sulfate.It is used in some countries as additives for water fluoridation, opal glass raw material, ore refining, or other fluoride chemical production.