Manganese monoxide is a strong oxidizing agent that can react with other substances, such as water or acid, to release oxygen. At high temperatures, manganese monoxide can react with more oxygen to form a higher oxidation state of manganese oxide, such as manganese dioxide.

1. Catalyst: Manganese monoxide can be used as a catalyst for certain chemical reactions, such as in the process of ammonia synthesis.

2. Electronic Materials: It can be used as a raw material for electronic components, especially in the production of resistors and thermistors, etc.

3. Glass & Ceramic: Manganese monoxide can be used as an additive to glass and ceramics to change their color or other physical properties.

4. Metallurgical industry: In the metallurgical process, manganese monoxide can be used as a desulfurizer to help remove sulfur from metals.

5. Scientific Studies: Manganese monoxide is used as a model compound in scientific research to study the chemical properties and redox processes of manganese.