Tungstate is an anionic salt containing tungstate (WO4 2-) or polytungstate (W7O24 6-). Common tungstates include tungstate (Na2WO4•2H2O), calcium tungstate (CaWO4), cobalt tungstate (CoWO4), cadmium tungstate (CdWO4), ferrous tungstate (FeWO4), ammonium tungstate [(NH4 ) 6W7O24 • 6H2O] and zinc tungstate (5ZnO • 12WO3) and so on. Among them, calcium tungstate and ferrous tungstate exist in scheelite and wolframite respectively. Ammonium salts and alkali metal tungstates are soluble in water, while other tungstates are insoluble.
Tungstate is common in industrial products, as well as phosphotungstic acid, and tungsten fluoride is widely used as a variety of high-quality coating materials in the electronic information industry. The traditional important tungstate products include: ammonium paratungstate and ammonium metatungstate. These two types of ammonium tungstate occupy a pivotal position in all tungstate products. my country has a large number of licenses in the export control of tungsten products. issued for these two products.
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