Yellow Tungsten Oxide, Blue Tungsten Oxide and Violet Tungsten Oxide Difference

yellow tungsten image
tungsten oxide blue image Inquiry & Feedback

Yellow tungsten oxide, blue tungsten oxide and violet tungsten oxide difference is caused by their oxygen content, mainly reflecting in appearance, molecular formula and boiling point and other properties, some properties of YTO, BTO and VTO are shown as follows:
1. Yellow tungsten oxide is lemon yellow crystalline powder, with its density of 7.2~ 7.4g/cm3, melting point of about 1470℃, boiling point among 1700~2000℃, which is significantly sublimation at 800 ℃;
2. Blue tungsten oxide with 2.9 oxygen molecules, and shows in blue or dark blue crystals powder, with the formula of WO2.9, the english abbreviation for BTO or TBO;
3. Violet tungsten oxide is short for VTO, purple finely crystalline powder, which is generated by precise controlling the reduction temperature in the production process of ammonium paratungstate (APT).

Yellow tungsten oxide, blue tungsten oxide and violet tungsten oxide difference is shown as the picture bellow:

BTO YTO VTO difference table

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APT

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.
ammonium metatungstate

Ammonium Metatungstate

Ammonium metatungstate(AMT) is an important intermediate compounds of tungsten hydrometallurgical process, appearance is white crystalline powder, solubility in water is the largest in the tungsten compounds which over 300g WO3/100ml H2O (in 25℃).
sodium tungstate

Sodium Tungstate

Sodium tungstate, a tungstate of sodium, is useful as a source of tungsten. It is prepared from tungsten ores used to manufacture tungsten by reducing it.
tungstic acid

Tungstic Acid

Tungstic acid refers to hydrated forms of tungsten trioxide, WO3. The simplest form, the monohydrate, is WO3.H2O, the dihydrate WO3.2H2O is also known. The solid state structure of WO3. H2O consists of layers of octahedrally coordinated WO5(H2O) units where 4 vertices are shared.
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.
cesium tungstate bronze

Cesium Tungsten Bronze

Cesium tungsten bronze is inorganic nano material with good property in absorbing near-infrared with uniform grain size and dispersibility, it has strong absorbing function in near-infrared area with wave length 800~1200nm, also has high transmittance in visible light area with wave length 380~780nm.