Molybdenum Oxide (MoO3)-Powder

Molybdenum trioxide is chemical compound with the formula MoO₃. This compound is produced on the largest scale of any molybdenum compound. It is an intermediate in the production of molybdenum metal. It is also an important industrial catalyst. Molybdenum trioxide occurs as the rare mineral molybdite.

Chemical formula：MoO₃

Molar mass：143.95 g·mol⁻¹

Appearance:yellow or light blue solid

Odor:odorless

Density:4.70 g/cm₃

Melting point:802 °C (1,476 °F; 1,075 K)

Boiling point:1,155 °C (2,111 °F; 1,428 K)(sublimes)

Solubility in water:1.066 g/L (18 °C)/4.90 g/L (28 °C)/20.55 g/L (70 °C)

Application

Molybdenum trioxide is used to manufacture molybdenum metal, which serves as an additive to steel and corrosion-resistant alloys. The relevant conversion entails treatment of MoO₃ with hydrogen at elevated temperatures:

MoO₃ + 3 H₂ → Mo + 3 H₂O

It is also a component of the co-catalyst used in the industrial production of acrylonitrile by the oxidation of propene and ammonia.

Because of its layered structure and the ease of the Mo(VI)/Mo(V) coupling, MoO₃ is of interest in electrochemical devices and displays. Molybdenum trioxide has also been suggested as a potential anti-microbial agent, e.g., in polymers. In contact with water, it forms H+ ions that can kill bacteria effectively.

MoO3_MSDS.pdf