What Is Ammonium Metatungstate

What is ammonium metatungstate? Ammonium metatungstate is a white crystalline powder, soluble in water, insoluble in aocohol.
Chinese Name: 偏钨酸铵

ammonium metatungstate picture

Abbreviation: AMT
Molecular Formula：H₈N₂O₄W；
Chemical Formula：(NH₄)₆H₂W₁₂O_{40.XH2O；
Molecular Weight：283.9145；
CB No.：CB41411564；
EC No.：234-364-9；
CAS No.: 14311-52-5；
HS Code：28418040；
Solubility(Water)：300g/100ml；
W valance in AMT： +6
W content in AMT：72%
Ammonium metatungstate has no harmful components, it has subacidity, often used in the preparation of tungsten products, catalyst in petroluem industry, nuclear shielding material, also ceramic industry, steel alloy, fire resistant fiber and inhibiter. In recent years, it is also used in emerging industry like semiconductor and thin film.
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