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Tungsten(VI) Oxide (WO₃)

Tungsten(VI) Oxide (WO₃), also known as tungsten trioxide, is a bright canary-yellow crystalline solid that, in pure form, is an electric insulator. It changes color to dark orange on heating but regains its bright yellow color when cooled.

Purity: 99.9% up to 99.99%
Typical Applications

Tungsten(VI) Oxide is used to manufacture tungsten and tungstates. These products are then used as X-ray screens and for fireproofing fabrics. Tungsten(VI) Oxide is used as a ceramic pigment. Nanowires of the compound can absorb solar radiation, including blue light.

Packaging Options

Jars, pails, drums, multi-ply paper bags, bulk bags, and fiberboard containers


Tungsten(IV) Oxide / Tungsten(VI) Oxide TSCA (SARA Title III) Status: Listed
For further information. Please call the EPA Office of Chemical Safety and Pollution Prevention (OCSPP) at 202-564-2902.
Tungsten(IV) Oxide CAS Number: 12036-22-5
Tungsten(VI) Oxide CAS Number: 1314-35-8

Sustainable Qualities

Tungsten (VI) Oxide (WO₃) is considered sustainable due to its high durability, corrosion resistance, and ability to withstand high temperatures, making it suitable for long-term use in various industries. Its use can contribute to a circular economy through recycling and reusing the material, as it is a highly valuable resource with a limited supply.

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