Used as a catalyst in chemical synthesis, particularly in oxidation reactions. Employed in the production of dry cell batteries due to its electrical conductivity. Serves as a precursor for manganese-based materials in electronics and industrial coatings. Applied in agriculture as a micronutrient in fertilizers to correct manganese deficiency in soils. Utilized in biological research as a source of manganese ions in enzyme studies and cell culture media. Also found in some medical imaging applications and dietary supplements where manganese supplementation is required.