Trait:

Powder form, color varies from yellow-green to green depending on the calcination temperature, density 6.67 g/cm³, melting point 1990°C. Soluble in acids, ammonia water, hot perchloric acid, and hot sulfuric acid; insoluble in water and liquid ammonia. When heated in air to 400°C, it absorbs oxygen and transforms into Ni₂O₃, and at 600°C, it reduces back to NiO. NiO obtained by low-temperature calcination exhibits chemical activity, while NiO calcined above 1000°C has low activity. As the temperature increases, density and electrical resistance increase, while solubility and catalytic activity decrease.

Application:

Enamel adhesion agents for enamelware, coloring agents, ceramic pigments, nickel-zinc ferrite in magnetic materials, brown-tinted glass in glass manufacturing, coloring agents for television tube glass shells, raw materials for nickel salts and nickel catalysts.

Packaging:

Packaged in 25kg iron drums.

Specifications:

Ni(%)≥

Hydrochloric acid insoluble matter (%) ≤

Fe(%)≤

Zn(%)≤

Heavy metals (calculated as Cu, %) ≤

Sulfur (%) ≤

Fineness: Residue on 100 mesh sieve (%) ≤

76

0.3

0.1

0.3

0.45

0.025

1.0