Ammonium paratungstate

Chembox new
Name = Ammonium paratungstate
ImageFile = APT.jpg
Section1 = Chembox Identifiers
CASNo = 11120-25-5
Section2 = Chembox Properties
Formula = (NH₄)₁₀(H₂W₁₂O₄₂)·4H₂O
MolarMass = 3132.2 g/mol
Appearance = White crystalline powder
Density =
Solubility =
MeltingPt =
BoilingPt = Decomposes at 600°C
Section7 = Chembox Hazards
EUClass = not listed

Ammonium paratungstate is a white crystalline salt of ammonium and tungsten, with the chemical formula (NH₄)₁₀(H₂W₁₂O₄₂)·4H₂O.

Ammonium paratungstate is produced separating tungsten from its ore. Once the ammonium paratungstate is prepared, it is heated to its decomposition temperature, 600 °C. Left over is WO₃, tungsten(VI) oxide. From there, the oxide is heated in an atmosphere of hydrogen, reducing the tungsten to elemental powder, leaving behind water vapor. From there,the tungsten powder can be fused into any number of things, from wire to bars to other shapes.