Ammonium metatungstate (Ammonium Metatungstate, AMT) is an inorganic compound of tungsten with the chemical formula (NH4)6[H2W12O40]•xH2O. It is a common tungstate consisting of tungstate ions and ammonium ions. Ammonium metatungstate is white crystalline powder or amorphous solid at room temperature.
Ammonium metatungstate is an important precursor of tungsten and plays an important role in the preparation and application of tungsten. It can be used as a starting material for the preparation of other tungsten compounds, such as tungsten oxide, sodium tungstate, etc. In addition, ammonium metatungstate can also be used in catalysts, electrochemical materials, optical materials and other fields.
In the laboratory, ammonium metatungstate can be obtained by evaporating and crystallizing the ammonium tungstate solution under appropriate conditions. It has good solubility and can be dissolved in water to form a solution, and can also be dissolved in an appropriate solvent.
To sum up, ammonium metatungstate is an important tungstate, which is often used in the preparation and application of tungsten. It has a wide range of uses in chemical research and industrial production.
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