Tags: Chemical Compound, Chemical Substance.
Ammonium paratungstate (or APT) 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.
