A.L.M.T. Corp.

Tungsten trioxide powder

Tungsten trioxide powder

Tungsten raw material is chemically refined to produce high-purity tungsten trioxide powder.
It is used for secondary batteries and scintillators; it is also used to improve electrical characteristics of ceramics (dielectrics for piezoelectric ceramics), and other new materials. 
(image is "F1-WO₃")

三酸化タングステン粉

Tungsten trioxide powder

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Type Particle size (μm) WO3(%) NVR(%) Fe(%) Mo(%)
F1-WO3 0.5~1.2 ≧99.9 ≦0.010 ≦0.002 ≦0.010
A2-WO3 7~12 ≧99.9 ≦0.010 ≦0.001 ≦0.010
C3-WO3 15~20 ≧99.9 ≦0.010 ≦0.001 ≦0.010

"Particle size" is the average particle diameter according to the Fischer method.
NVR:Non Volatile Residue by Chlorination

High-purity tungsten trioxide powder

To see the whole table, scroll sideways.

Type WO₃(%) Fe(ppm) Mo(ppm) U(ppb) Th(ppb)
A5-WO₃ ≧99.999 ≦1 ≦1 ≦1 ≦1