Manganic Oxide

Name:
Manganic Oxide
Detailed information:

Chemistry name:	manganese sesquioxide
M Formula:	Mn2O3
Properties:
Black, lustrous powder, sometimes tinged brown. Very hard. D 4.5, decomposes at 1080C. Soluble in cold hydrochloric acid; not soluble in nitric acid (decomposes), hot sulfuric acid; insoluble in water. Noncombustible.
Hazard:
Flammable in finely divided form. Toxic by inhalation of dust.