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Ammonium Paratungstate(APT)

Molecular formula 5(NH4)2O.12WO3.5H2O
Specification
Class APT-1 APT-2
Main Content Wo3% ≥88.5 ≥88.5
Al 0.0005 0.001
As 0.001 0.002
Bi 0.0001 0.0001
Cu 0.001 0.002
Cd 0.0001 0.0001
Co 0.001 0.002
Cr 0.001 0.002
Cu 0.0005 0.0008
Fe 0.001 0.003
Mg 0.0005 0.001
Mn 0.0005 0.001
Mo 0.003 0.01
Na+V1 0.002 0.004
Ni 0.0007 0.001
P 0.0007 0.002
Pb 0.0001 0.0001
S 0.0007 0.002
Si 0.001 0.003
Sb 0.0005 0.001
Sn 0.0001 0.0001
Ti 0.001 0.001
V 0.001 0.001
Class APT-1 APT-2
Physical Specification
Loss on Ignition ＜150% ＜11.50%
Specific Gravity of Packaging 1.8-2.3g/cm3 1.8-2.3g/cm3
Mean Particle Sizes 25-50n 25-50n
Particle Size on Sieving -40目(100%) -40目(100%)
Uses Applied to the manufacture of tungsten trioxide, blue tungsten oxide, tungsten powder, tungsten rods, tungsten filaments,tungsten oxide as well as hard alloy etc.
Packing Iron drums with 50 kg net capacity.

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