Yellow Tungsten Oxide (YTO)

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Introduction

Yellow tungsten oxide is a finely divided, yellow crystalline powder. It is produced by roasting ammonium paratungstate at closely controlled temperatures to drive off water and ammonia. Exact time and temperature control determine, to a large extent, the physical characteristics of yellow tungsten oxide.

Yellow tungsten oxide has two colors for different grain size. When the grain size of yellow tungsten oxide is around 1.5um, it shows the color of yellow, and when the grain size of yellow tungsten oxide is around 15um, it shows green. The property is similar.

Producing Method

Yellow tungsten oxide can be produced by APT calcination method, hydrothermal method, tungstic acid calcination method, precipitation method, sol-gel method, micro emulsion method, spray pyrolysis method, vapor phase method and ion exchange method.

Chemical Specification

Yellow Tungsten Oxide Chemical Specification

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Ammonium Paratungstate

Ammonium paratungstate (APT) is an important intermediate compounds of tungsten hydrometallurgical process, appearance is white crystalline powder, insoluble in water, soluble in alcohol and ether.
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Ammonium Metatungstate

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Sodium Tungstate

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blue tungsten oxide

Blue Tungsten Oxide

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. Composition of blue tungsten oxide is complex, among which there are also intermediate oxides like WO2 and W4.
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Cesium Tungsten Bronze

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