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Tungsten Trioxide

Molecular Formula: WO₃

Appearance: Light yellow crystallized powder

Apparent Density: 2.5-3/0g/cm³

Application: Mainly used as the raw material for cemented carbide tungsten powder. W-base alloy product, vacuum electronic device and electro-optical device and chemical industry as well.

Impurity Content:

Grade W0₃-0 W0₃-1 W0₃-2 W0₃-Cr

Purity Min. (%) 99.98 99.95 99.90

Impurity Content
Max. (%) Al 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 0.002 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

Grade		W0₃-0	W0₃-1	W0₃-2	W0₃-Cr
Purity Min. (%)		99.98	99.95	99.90
Impurity Content Max. (%)	Al	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	0.002	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