Ammonium Paratungstate
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Ammonium Paratungstate:
|
Grade |
APT-0 |
APT-1 | |
|
WO3（%min） |
88.5 |
88.5 | |
|
Impurities |
Al |
0.0005 |
0.0010 |
|
Fe |
0.0010 |
0.0010 | |
|
S |
0.0007 |
0.0010 | |
|
As |
0.0010 |
0.0010 | |
|
P |
0.0007 |
0.0010 | |
|
Mo |
0.0020 |
0.0050 | |
|
Ca |
0.0010 |
0.0010 | |
|
Mg |
0.0007 |
0.0010 | |
|
K |
0.0010 |
0.0015 | |
|
Na |
0.0010 |
0.0015 | |
|
Si |
0.0010 |
0.0010 | |
|
Cu |
0.0003 |
0.0005 | |
|
Mn |
0.0010 |
0.0010 | |
|
Ni |
0.0007 |
0.0010 | |
|
Pb |
0.0001 |
0.0001 | |
|
Bi |
0.0001 |
0.0001 | |
|
Sn |
0.0001 |
0.0003 | |
|
Sb |
0.0008 |
0.0010 | |
|
V |
0.0010 |
0.0010 | |
|
Ti |
0.0010 |
0.0010 | |
|
Cr |
0.0010 |
0.0010 | |
|
Co |
0.0010 |
0.0010 | |
◆ Formula: 5(NH4)2O.12WO3.5H2O.
◆ Appearance:Free flowing white crystalline powder with no any other cast or foreign matter.
◆ Ignition Loss: 11.5%max
◆ Fsss: 35-46 micron.
◆ Scott Density: 1.8-2.6 G/CM3.
◆ Packing:In iron drums with inside plastic bags of 100kg or 200kg net each.
Remarks:
1)APT-0 is high purity matetial for special uses.
2)Material of 40-46micron is mainly used for producing tungsten bar for drawing wire
3)Any special requirement to the products can be discussed.
