Blue Tungsten Oxide (BTO)
Introduction
Blue tungsten oxide refers to a class of dark blue compound containing tungsten (Ⅵ) and tungsten (V) mixed valence state. Blue tungsten oxide is the product of reductant and tungsten compounds.
Chemical Formula: WO2.9
CAS NO. : 1314-35-8
HS Code: 2825901910
Producing Method
Blue tungsten oxide can be produced by APT calcination method, APT mild hydrogen reduction method, inner reducing method and ion exchange method.
Chemical Specification
| Grade：A | WO2.8-2.97 Content(%min)：99.95 | |||||||||||
| Density: 2.4-2.8g/cm3 | Grain Size：12-19um | |||||||||||
| Impurity(%max) | ||||||||||||
| Element | Al | As | Bi | Ca | Cd | Cr | Co | Cu | Fe | K | Mg | Mn |
| MAX | 0.0005 | 0.0010 | 0.0001 | 0.0010 | 0.0001 | 0.0010 | 0.0010 | 0.0003 | 0.0010 | 0.0010 | 0.0007 | 0.0010 |
| Element | Mo | Na | Ni | P | Pb | S | Sb | Si | Sn | Ti | V | / |
| MAX | 0.0020 | 0.0010 | 0.0007 | 0.0007 | 0.0001 | 0.0007 | 0.0005 | 0.0010 | 0.0002 | 0.0010 | 0.0010 | / |
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