Tungsten Trioxide Powders
| Grade |
Chemical Composition (%) |
Packing |
|
WO3
|
Ig. Loss
|
N.V.R.
|
Fe
|
Mo
|
|
|
|
WO3-1
|
99.9 min
|
0.60 max
|
0.010 max
|
0.010 max
|
--
|
20 kg
|
|
WO3-3
|
99.9 min
|
--
|
1.500 max
|
0.300 max
|
--
|
25 kg
|
|
WO3-4
|
99.9 min
|
0.35 max
|
0.010 max
|
0.005 max
|
0.010 max
|
25 kg
|
[Ignition is neglected to determine WO3 content.]
Typical data for 99.99% grade:
| Grade |
C |
Ca |
Cr |
Fe |
Mo |
P |
Si |
|
WO3-4N
|
10 ppm max
|
10 ppm max
|
10 ppm max
|
10 ppm max
|
10 ppm max
|
10 ppm max
|
10 ppm max
|
| 
