Ammonium Paratungstate,Tungsten Trioxide is white crystal ,slightly soluble in water ,stable in the air under normal temperature
Ammonium Paratungstate
Property:
Ammonium Paratungstate is one kind of tungstate. It is customarily entitled APT. English Name: Ammonium Paratungstate. Molecular Formula: 5NH42OWO35H2O.
Ammonium Paratungstate is white crystal and slightly soluble in water. It is stable in the air under normal temperature but starting to decompose into WO3 at 25oC.
Application
Ammonium Paratungstate is the intermediate product of tungsten industry and the main raw material for tungsten oxide production. When calcination temperature is 700-800, we can get tungsten oxide.
Specification:
APT-0
APT-1
APT-2
Chemical Composition %
WO3% (Min)
88.5
88.5
88.5
Impurity
%≤
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
0.002
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
Shenyang Huachang Non-Ferrous Mining Co.,Ltd
Shenyang Five Star Mining Co.,Ltd
Huachang Mining Limited
