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Tungsten Oxide (WO₃), CAS 1314-35-8, also known as tungsten trioxide or tungstic anhydride, is a thermally stable, water-insoluble inorganic compound produced as a yellow crystalline powder with a monoclinic crystal structure at room temperature. With a density of 7.16 g/cm³, a melting point of 1,472°C, and an n-type semiconducting character driven by oxygen vacancy-dependent electronic behavior, WO₃ is one of the most functionally versatile transition metal oxides in advanced materials manufacturing. Produced via the calcination of Ammonium Paratungstate (APT), Tungsten Trioxide serves as the essential starting point for hydrogen reduction into pure tungsten metal powder and is increasingly sought after for its unique electrochromic and photocatalytic properties. Functionally, tungsten oxide serves as a key intermediate for producing tungsten powder, tungsten carbide, and various tungstate compounds used in cutting tools, electronics, and specialty materials. As trusted tungsten oxide manufacturers and suppliers in the USA, Scimplify delivers high-purity Yellow Tungsten Oxide (99.04%) with consistent batch quality, controlled particle size distribution, and complete technical documentation (TDS, SDS, COA). Our supply chain and product are manufactured to support U.S. manufacturers, metallurgical processors, and advanced material companies with reliable sourcing, scalable volumes, and adherence to US standards for industrial and high-performance applications.
Tungsten Oxide (WO₃), CAS 1314-35-8, also known as tungsten trioxide or tungstic anhydride, is a thermally stable, water-insoluble inorganic compound produced as a yellow crystalline powder with a monoclinic crystal structure at room temperature. With a density of 7.16 g/cm³, a melting point of 1,472°C, and an n-type semiconducting character driven by oxygen vacancy-dependent electronic behavior, WO₃ is one of the most functionally versatile transition metal oxides in advanced materials manufacturing. Produced via the calcination of Ammonium Paratungstate (APT), Tungsten Trioxide serves as the essential starting point for hydrogen reduction into pure tungsten metal powder and is increasingly...
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Critical Metals
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Critical metals & Strategic materials
Tungsten Compounds
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Chemical Properties & Specifications
Most critical material for the production of Tungsten Metal Powder. Placed in reduction furnaces under a hydrogen atmosphere, where the oxygen is stripped away to leave pure metallic tungsten. Particle size of the YTO directly influences the grain size of the resulting metal powder, which is vital for high-quality tungsten carbide production
Unique ability to change color (from yellow/clear to deep blue) when an electric voltage is applied, a process known as electrochromism. Core material for Smart Windows that can dim automatically to reduce building energy consumption
Efficient photocatalyst used for water splitting (to produce hydrogen) and the degradation of organic pollutants in wastewater. Bandgap is well-suited for absorbing visible light, making it a sustainable choice for environmental remediation.
As a critical intermediate supplied by leading tungsten oxide manufacturers and suppliers in the USA, tungsten oxide is used for producing tungsten metal powder and tungsten carbide, which are essential for cutting tools, aerospace components, and wear-resistant industrial parts.
Tungsten oxide is widely used in electrochromic devices such as smart windows, displays, and optical coatings, where its reversible light-modulating properties support energy-efficient building systems and advanced automotive applications in the US market.
Functions as an active catalyst or catalyst support in petrochemical refining, hydrogenation, and environmental applications, supporting efficient chemical conversion processes in US industrial operations.
Due to its n-type semiconducting properties, tungsten oxide is applied in gas sensors for detecting NOx, hydrogen, and volatile gases, supporting environmental monitoring and industrial safety systems.
Tungsten oxide is used in high-temperature coatings, ceramic pigments, and fire-resistant materials, where sourcing from trusted tungsten oxide manufacturers ensures consistent performance, thermal stability, and corrosion resistance.
Highly stable at room temperature. Insoluble in water and most acids but dissolves in hot alkaline solutions
Store in a cool, dry place. Keep containers tightly closed. While not hygroscopic, preventing moisture ingress ensures the powder remains free-flowing for automated dosing.
Non-hazardous for transport. Available in 1000kg "Big Bags" for large-scale industrial supply
Yellow Tungsten Oxide (W O3) is fully oxidized. Blue Tungsten Oxide (BTO) is slightly reduced (sub-stoichiometric). BTO is often preferred for metal powder production because it reduces more quickly and easily in hydrogen furnaces, but YTO is the standard for chemical, ceramic, and electronic applications.
Particle size is measured via Fisher Sub-Sieve Sizer (FSSS). We offer grades ranging from 0.5 um to 20 um. We control the calcination temperature of the APT precursor to ensure the YTO morphology matches your specific metallurgical or catalytic requirements.
Yes. We provide ultra-high purity grades (99.99%+) specifically for the production of sputtering targets used in thin-film deposition for displays and semiconductor devices.
Absolutely. As with all our tungsten products, the raw ore is sourced from Conflict-Free Smelter Program (CFSP) compliant mines. We provide full RMI documentation to support your sustainability reporting.
The moq to Buy WO3 Powder 99.9% Purity shared upon on sourcing along with Tungsten Trioxide coa, Tungsten Trioxide sds with compliance documentations adhering region specific regulatories.
