Manganese Sesquioxide (Mn2O3)-Powder

Characteristic

Manganese(III) oxide is a chemical compound with the formula Mn₂O₃. black crystal. Poisonous.Relative density 4.50.Insoluble in water, acetic acid, soluble in cold hydrochloric acid, hot nitric acid and hot sulfuric acid.

Chemical formula：Mn₂O₃

Molar mass：157.8743 g/mol

Appearance：brown or black crystalline

Density：4.5 g/cm³

Melting point：888 °C (1,630 °F; 1,161 K) (alpha form)

                      940 °C, decomposes (beta form)

Solubility in water：  0.00504 g/100 mL (alpha form)

                               0.01065 g/100 mL (beta form)

Solubility：insoluble in alcohol, acetone

                 soluble in acid, ammonium chloride

Magnetic susceptibility (χ)：+14,100·10⁻⁶ cm³/mol

Crystal structure：Cubic, cI80

Application

Manganese trioxide can be used as a catalyst for selective reduction of nitric oxide in inorganic and as an oxidant in organic synthesis. It can also be used as a carrier or electrode material for palladium-platinum alloys.