Ammonium paratungstate |
| Product name: |
Ammonium paratungstate |
| Alias: |
Ammonium tungstate; Ammonium wolframate; APT; dioxido(dioxo)tungsten; diammonium dioxido(dioxo)tungsten |
| English name: |
Ammonium paratungstate |
| CAS no.: |
11120-25-5;14311-52-5 |
| Molecular formula: |
3(NH4)2O-7WO3-6H2O |
| Molecular weight: |
3060.46 |
| Structural formula: |
 |
|
Grade
|
APT-1
|
APT-2
|
|
Main content O3(%)
|
≥88.5
|
≥88.5
|
|
Al
|
0.0005
|
0.001
|
|
AS
|
0.001
|
0.002
|
|
Bi
|
0.0001
|
0.0001
|
|
Ca
|
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+K
|
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
|
|
Grade
|
APT-1
|
APT-2
|
|
|
Physical specification
|
|
|
Ignition loss
|
＜11.50%
|
＜11.50%
|
|
Loose specific weight
|
1.8-2.3g/cm3
|
1.8-2.3g/cm3
|
|
Average particle size
|
25-50u
|
25-50u
|
|
Sieve size
|
-40 mesh (100%)
|
-40 mesh (100%)
|
|
| Uses: |
The product can be used in producing tungsten trioxide, blue tungsten oxide, tungsten powder, tungsten rod, tungsten wire, and hard alloy, etc. |
| Packing, storage and transportation: |
The product is packed by 50KG iron drum. |
|
|
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