Manganese (II) Oxide MnO

Manganese(II) Oxide
Other Names: Manganous oxide, Manganosite, Manganese monoxide, Oxomanganese, Green manganese oxide

CAS Number: 1344-43-0
Sum Formula: MnO
Molar Mass: 70.94 g/mol
Appearance: Green to gray-green crystalline powder or solid

Manganese(II) oxide is an inorganic compound composed of manganese in the +2 oxidation state and oxygen. It is an important material in ceramics, metallurgy, and chemical synthesis, often used for its high reactivity and redox properties.

Chemical and Physical Properties
Density: 5.43 g/cm³
Melting Point: 1785°C
Boiling Point: Sublimes without decomposition at high temperatures
Solubility in Water: Insoluble
Solubility in Other Solvents: Soluble in acids with evolution of hydrogen gas
Odor: Odorless

Applications
Ceramics and Glass Industry: Used as a pigment and flux in the manufacture of colored glass and ceramics.
Metallurgy: Employed in steelmaking and alloy production to control sulfur and oxygen levels.
Chemical Synthesis: Utilized as a precursor for the production of other manganese compounds.
Battery Industry: Investigated for use in lithium-ion and alkaline battery technologies.
Catalysis: Studied as a catalyst in oxidation and redox reactions.

Safety

Signal Word: Warning

Handling and Storage
Storage Conditions: Store in a tightly sealed container in a cool, dry, and well-ventilated area. Protect from moisture and strong acids.
Handling Precautions: Avoid creating dust and direct exposure to eyes or skin. Use appropriate PPE and standard chemical handling procedures.