- Chemical Formula: MnO2
- Physical Appearance: Manganese dioxide is typically found in the form of a black or dark brown solid powder.
- Occurrence: It occurs naturally as the mineral pyrolusite and is often extracted from mines.
- Chemical Structure:
- Composed of manganese ions (Mn4+) and oxide ions (O2−).
- It exists in various crystalline structures.
- Uses:
- Battery Production: Widely used as a cathode material in dry-cell batteries (alkaline batteries).
- Chemical Catalyst: Acts as a catalyst in certain chemical reactions.
- Pigment: Used as a black or brown pigment in paints and ceramics.
- Water Treatment: Employed in the water treatment industry for the removal of iron and manganese.
- Reactivity: Manganese dioxide is known for its ability to undergo redox reactions, making it valuable in various applications.
- Safety Considerations: Generally considered safe under normal handling and use, but appropriate precautions should be taken.
Manganese dioxide's versatility makes it valuable in different industries, ranging from battery production to water treatment and beyond.
