can't read?
Manganese(III) oxide is a chemical compound with the formula Mn2O3.
M 0133 Manganese(III) oxide, 99% Cas no 1317-34-6 - used as the starting material for the production of lithium manganate (III, IV) LiMn2O4 (cathode material of lithium-ion batteries) and as a pigment in dyes (eg, glass, eg brown).