Tungsten Oxide Specification

Tungsten Oxide Picture

Tungsten oxide specification as following:

Grade

WO3(%,min)

Impurities (%,max )

Al

As

Bi

Ca

Mg

Cu

K

Na

WO3-1

99.95

0.0005

0.001

0.0001

0.0015

0.0005

0.0003

0.001

0.001

WO3-2

99.5

0.0015

0.01

--

0.01

0.01

--

0.005

0.005

Impurities(%,max )

Fe

Mn

Mo

Ni

P

Pb

S

Sb

Si

Sn

Ti

0.001

0.0005

0.002

0.0007

0.0007

0.0001

0.0007

0.0003

0.001

0.0001

0.001

0.04

--

0.03

--

0.004

--

0.006

--

0.005

--

--

Grade

WO3(%,min )

Apparent density(g/cm3)

Average size(Fess.)u

Screen size(mesh) 100%

WO3-1

99.95

2~2.8

7~16

-40

WO3-2

99.5

0.6~1.0

0.6~1.5

 

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