Tungsten Oxide Chemical Analysis

The chemical analysis of tungsten oixde as following:

Grade WO3-0 WO3-1 WO3-2 WO3-Cr
Purity Min.(%) 99.98 99.95 99.90 -
Impurities
Max.(%)
AI 0.0005 0.001 0.001 0.001
As 0.001 0.001 0.002 0.002
Bi 0.0001 0.0001 0.0005 0.0001
Ca 0.001 0.001 0.003 -
Co 0.001 0.001 0.002 -
Cr 0.001 0.001 0.001 0.32-0.40
Cu 0.0003 0.0005 0.001 0.001
Fe 0.001 0.001 0.003 0.003
K 0.001 0.0015 0.002 0.002
Mg 0.0005 0.001 0.002 -
Mn 0.0005 0.001 0.001 0.001
Mo 0.002 0.005 0.02 -
Na 0.001 0.0015 0.003 0.002
Ni 0.0005 0.0007 0.001 0.001
P 0.0005 0.001 0.003 0.003
Pb 0.0001 0.0001 0.0005 0.0003
S 0.0005 0.001 0.001 0.0001
Sb 0.0005 0.001 0.002 0.0002
Si 0.001 0.001 0.003 0.0002
Sn 0.0001 0.0005 0.0005 0.0005
Ti 0.001 0.001 0.002 -
V 0.001 0.001 0.002 -

 

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