Ammonium paratungstate, or APT, is the intermediate product of the tungsten industry and the main raw material for tungsten oxide production. APT is slightly soluble in water, stable under normal temperatures, but starts to decompose into WO3 at 25C.

 

Content APT-0 (max % wt.) APT-1 (max % wt.) APT-2 (max % wt.) WO3 >88.5 >88.5 >88.5 Al 0.0005 0.001 0.001 As 0.001 0.001 0.002 Bi 0.0001 0.0001 0.0002 Ca 0.001 0.001 0.001 Co 0.001 0.001 0.001 Cr 0.001 0.001 0.001 Cu 0.0003 0.0005 0.001 Fe 0.001 0.001 0.002 K 0.001 0.0015 0.001 Mn 0.001 0.001 0.001 Mg 0.0007 0.001 0.002 Mo 0.002 0.005 0.01 Na 0.001 0.0015 0.002 Ni 0.0007 0.001 0.001 P 0.0007 0.001 0.002 Pb 0.0001 0.0001 0.0002 S 0.0007 0.001 0.001 Sb 0.0008 0.001 0.002 Si 0.001 0.001 0.003 Sn 0.0001 0.0003 0.0005 Ti 0.001 0.001 0.001 V 0.001 0.001 0.001

 

High Purity Tungsten/ Tungsten Wire/ Tungsten Powder/ Tungsten Carbide/ Tungsten Rhenium Thermocouples/ Tungsten Plates, Sheets & Fabricated Parts/ Ammonium Paratungstate (APT)/ WKM - Potassium Doped/ WKL – Potassium Doped/ Tungsten Evaporation/ WKA - Potassium Doped/ Tungsten Targets/