Tungsten Oxide (WO3)-Powder

Characteristic




Tungsten(VI) oxide, also known as tungsten trioxide or tungstic anhydride, WO3, is a chemical compound containing oxygen and the transition metal tungsten. It is obtained as an intermediate in the recovery of tungsten from its minerals.




Chemical formula：WO3

Molar mass：231.84 g/mol

Appearance：Canary yellow powder

Density：7.16 g/cm3

Melting point：1,473 °C (2,683 °F; 1,746 K)

Boiling point：1,700 °C (3,090 °F; 1,970 K) approximation

Solubility in water：insoluble

Solubility：slightly soluble in HF

Magnetic susceptibility (χ)：−15.8·10−6 cm3/mol




Application




In addition to metal tungsten, yellow tungsten trioxide can also be used as a pigment in ceramics and coatings.Tungsten trioxide is also used in the infrared contactless window control system.