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HomeMaterialsOxide PowderHigh Purity Tungsten Oxide WO3 powder CAS 1314-35-8, 99.9%

High Purity Tungsten Oxide WO3 powder CAS 1314-35-8, 99.9%

Tungsten Trioxide yellow powder. Tungsten trioxide, yellow powder, insoluble in water. Soluble in alkali. This is used for the manufacture of high melting points alloys and hard alloys, as well as tungsten wire and fireproof material.
Color: yellow, purple, blue

Particle size 70nm

About Tungsten Oxide WO3 Powder:

Tungsten oxide


tungsten trioxide

Is an organic substance that has the chemical formula


It is a yellowish powder. This is achieved by adding acid to the soda ash after it has been fusioned with ore.

Tungsten trioxide is

It is a light yellow orthorhombic crystal powder. As the powder is heated, it changes color from lighter to darker. It has a specific gravity of 7.16 grams per cm3, a melting point of 1473degC and a boiling point at 1750degC. The temperature at which it melts is 850degC. It becomes subliminal and green. It is stable in air and insoluble with water and other inorganic acids, except hydrofluoric, and can slowly dissolve in ammonia solution and concentrated sodium hydroxide solution.

Tungsten(VI) oxide

The chemical compound known as tungsten trioxide (or tungstic anhydride), WO3, contains both oxygen and the tungsten transition metal. It’s used to recover tungsten from its mineral sources. Alkalis is used to make WO from tungsten ore. Hydrogen gas or carbon can further reduce tungsten oxide to pure metal.

Tungsten(VII) oxide can be found in nature as a hydrate, which includes minerals like tungstite, meymacite and hydrotungstite. (of the exact same composition as meymacite but sometimes written as H2WO4) These secondary tungsten mineral minerals can only be found as rare or very scarce.

The crystal structure of tungsten trioxide is temperature-dependent. The crystal structure of tungsten trioxide is temperature-dependent. At higher temperatures than 740°C it becomes tetragonal. Monoclinic with the space group of P21/n is the most common structure in WO3.

Tungsten trioxide is

A strong oxidizing agent. It reacts strongly with rare-earth metals, such as iron, copper, manganese and zinc. The reaction with gold or platinum makes it into dioxide.

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Tungsten Oxide Powder

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Tungsten Oxide Powder WO3 Performance:

Tungsten Trioxide is an orthorhombic, light-yellow crystal powder. Its color can change to darken when heated. Specific gravity is 7.16g/cubic cmimeter. It melts at 1473°C. It boils at 1750°C. This substance sublimates well at 850°C and becomes green upon melting. The ammonia solution and the concentrated sodium hydroxide solution are stable and insoluble in air.

Technical Parameters of Tungsten Oxide WO3 Pulp:

WO3 Certificate of Analysis —ppm











How is Tungsten Oxide WO3 Powder produced?

Tungsten trioxide is prepared in many different ways. The CaWO4 or scheelite can react with HCl in order to make tungstic acid. It then decomposes at high temperatures to WO3 (or water).

CaWO4 + CaCl2 + CaWO4

H2WO4 – H2O + WO3

An alternative method of synthesizing WO3 in common is to calcinate ammonium paratungstate under oxidizing conditions.

(NH4)10[H2W12O42] * 4H2O – 12 WO3 + 10 NH3 + 10 H2O

Applications Tungsten Oride WO3 Pulp:

Tungsten Trioxide can be used for many purposes in everyday life. This is often used by industry for the manufacture of Xray phosphors and fireproof fabric, as well as gas sensors. Its rich yellow color makes it a great pigment to use in paints and ceramics.

1.Tungsten oxide is mostly used in calcining to create tungsten flour and tungsten carbide. It can then be used for production of cemented carbide products like the making of molds and tools.

2.Tungsten trioxide can also be used to manufacture pure tungsten products, tungsten bars, tungsten wires, tungsten electrodes;

A tiny amount of tungsten dioxide can be found in some industrial processes as an additive to yellow ceramics.

4. In the shipbuilding sector, tungsten dioxide of tungsten can be used as an important coating or paint anticorrosive.

5. In recent years, tungsten Trioxide has been used in the production of electrochromic or smart windows. The light transmission properties of these windows can be altered by applying voltage. They are electrically-switchable. By doing this, users can tint their windows and change the light or heat passing through.

6.X-ray Screen and Fireproof Textile, and the Colorant and Analysis Reagent of Chinaware.

7.Tungsten dioxide can also be used to reduce radiation.

A lot of research has been done on 8.WO3, due to its potential for being electrooptical, ferroelectric, and catalytic.

9. Radiation shielding material, and the metal that produces tungsten.

Tungsten Oide WO3 Powder Storage:

Tungsten oxide WO3 powder should not be exposed to the air. It should be kept in a dry, cool, and sealed environment.

Packing & Shipping of Tungsten Oride WO3 Powder

You can pack it in two plastic bags with the inside.

Tungsten Oxide powder packing: 100g, 500g and 1kg/bag. 25kg/barrel. Or as you request.

Tungsten Oxide W3 Powder shipping shipping: orders can be made by sea or air as soon as the payment is received.

Tatayoung advanced materials Nano Technology Co. Ltd., (Tatayoung), is a trusted global chemical supplier & manufacturer. With over 12-years of experience, Tatayoung has been providing high-quality chemicals and Nanomaterials including graphite, boride, nitride, graphite, and sulfide powders.

Send us an enquiry if you’re looking for a high-quality time-released tungsten powder. (

Tungsten Oxide WO3 Powder Properties

Other Titles
Tungsten trioxide, Tungstic anhydride, Tungsten(VI) oxide, Tungstic, oxide


Compound Formula

Molecular Weight
231.84 g/mol

Blue powder, yellow and purple

Melting Point
1,473 degC

Solubility In Water

7.16 g/cm3


Minimum Particle Size

Boling Point
1700 degC

Specific Heat

Thermo Conductivity

Thermal Expansion

Young’s Module

Exact Length
231.936 g/mol

231.935644 So

Tungsten Oxide WO3 Powder Health & Safety Information

Safety Notice

Hazard Statements

Flashing Point
Non applicable

Hazard Codes

Risk Codes

Safety statements


Transport Information
NONH on all transport modes

Deutsches WGK

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