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Ammonium Paratungstate

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Molecular Formula: 5(NH4)2O·12WO3·5H2O

Appearance: White crystallized powder.

Application: Raw material for producing WO3,blue tungsten oxide, AMT and tungsten powder.

Grade and Chemical Composition:

Grade

APT-0 APT-1APT-2
Purity Min.(%)99.9899.9599.90
WO3,Main Comp WO3Min.(%)88.588.588.5
Content of Other Chemical Element Max.(%)Al0.00050.0010.001
As0.0010.0010.002
Bi0.00010.00010.0002
Ca0.0010.0010.002
Co0.0010.0010.001
Cr0.0010.0010.001
Cu0.00030.00050.001
Fe0.0010.0010.002
K0.0010.00150.002
Mn0.0010.0010.001
Mg0.00070.0010.002
Mo0.0020.0050.01
Na0.0010.0010.002
Ni0.00050.0010.001
P0.00070.0010.002
Pb0.00010.00010.0002
S0.00070.00070.001
Sb0.00080.0010.002
Si0.0010.0010.003
Sn0.00010.00030.0005
Ti0.0010.0010.001
V0.0010.0010.001

 

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