Nickel oxide is an olive-green crystalline powder with the chemical formula NiO that is insoluble in water. It is an important inorganic compound that has a variety of uses.

Physical and chemical properties

Appearance: Nickel oxide is an olive-green crystalline powder that turns yellow when overheated.

Density: Relative density is 6.67 g/cm³.

Melting Point: Melting point up to 1984 °C.

Solubility: insoluble in water, but soluble in acid and ammonia.

Uses of Nickel Oxide

1. Enamel and ceramic industry: Nickel oxide is used as a bonding agent and colorant in the manufacture of ceramics and enamels, and is also used as a pigment for ceramics and glass.

2. Magnetic material production: It is used to produce magnetic materials such as nickel-zinc ferrite, which are widely used in electronic equipment and motors.

3. Raw materials for the manufacture of nickel salts: As raw materials for the manufacture of various nickel salts, these nickel salts are very important in other industrial applications.

4. Catalyst: Used as a catalyst in metallurgy and CRT production to facilitate chemical reactions.

5. Electrical and Electronic Materials: Nickel oxide is used as a material for electronic components such as capacitors and resistors due to its unique electrical properties.

6. Sensor Materials: Nickel oxide also has applications in sensor manufacturing, especially in temperature sensors and gas sensors.

7. Battery Electrode Material: In battery manufacturing, nickel oxide can be used as an electrode material, especially in nickel-metal hydride batteries and lithium-ion batteries.

8. Catalyst Carrier: Nickel oxide can also be used as a catalyst carrier to catalyze chemical reactions, such as wastewater treatment and the decomposition, synthesis and conversion of organic matter.

9. Anti-Corrosion Materials: Due to its stability and corrosion resistance, nickel oxide is also used as part of anti-corrosion coatings and materials