Specification of tungsten oxide from
national standard
Grades |
WO3-0
WOX-0 |
WO3-1
WOX-1 |
WO3-2
WOX-2 |
|
Impurity Content Max. |
Al
|
0.0005
|
0.001
|
0.001
|
As
|
0.001
|
0.001
|
0.003
|
|
Bi
|
0.0001
|
0.0001
|
0.0005
|
|
Ca
|
0.001
|
0.001
|
0.003
|
|
Co
|
0.001
|
0.001
|
0.002
|
|
Cr
|
0.001
|
0.001
|
0.001
|
|
Cu
|
0.0003
|
0.0005
|
0.001
|
|
Fe
|
0.001
|
0.001
|
0.003
|
|
K
|
0.001
|
0.0015
|
0.002
|
|
Mg
|
0.0007
|
0.001
|
0.002
|
|
Mn
|
0.001
|
0.001
|
0.001
|
|
Mo
|
0.002
|
0.005
|
0.02
|
|
Na
|
0.001
|
0.0015
|
0.003
|
|
Ni
|
0.0007
|
0.0007
|
0.001
|
|
P
|
0.0007
|
0.001
|
0.002
|
|
Pb
|
0.0001
|
0.0001
|
0.0005
|
|
S
|
0.0007
|
0.001
|
0.001
|
|
Sb
|
0.0005
|
0.001
|
0.002
|
|
Si
|
0.001
|
0.001
|
0.003
|
|
Sn
|
0.0002
|
0.0005
|
0.001
|
|
Ti
|
0.001
|
0.001
|
0.002
|
|
V
|
0.001
|
0.001
|
0.002
|
|
WO3 LOI
|
0.5
|
0.5
|
0.5
|
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www.tungsten-powder.com
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