◆ Ammonium
Paratungstate
Molecular Formula：5(NH4)2O.12WO3.5H2O
Appearance: White crystallized powder
Sieve Size: 250um(-60mesh)
Application: Raw material for producing WO3, blue tungsten oxide,
AMT and tungsten powder
Grade |
APT-1 |
APT-2 |
Purity Min.(%) |
99.98 |
99.95 |
Main Comp WO3 Min.(%) |
88.5 |
88.5 |
Content of other Chemical,Element Max.(%) |
Al |
0.0005 |
0.001 |
As |
0.001 |
0.001 |
Bi |
0.0001 |
0.0001 |
Ca |
0.001 |
0.001 |
Co |
0.001 |
0.001 |
Cr |
0.001 |
0.001 |
Cu |
0.0003 |
0.0005 |
Fe |
0.001 |
0.001 |
K |
0.001 |
0.0015 |
Mn |
0.001 |
0.001 |
Mg |
0.0007 |
0.001 |
Mo |
0.002 |
0.005 |
Na |
0.001 |
0.0015 |
Ni |
0.0007 |
0.001 |
P |
0.0007 |
0.001 |
Pb |
0.0001 |
0.0001 |
S |
0.0007 |
0.001 |
Sb |
0.0008 |
0.001 |
Si |
0.001 |
0.001 |
Sn |
0.0001 |
0.0003 |
Ti |
0.001 |
0.001 |
V |
0.001 |
0.001 |
|
