Title: Nickel Sesquioxide

CAS Registry Number: 1314-06-3

Additional Names: Nickelic oxide; black nickel oxide

Molecular Formula: Ni2O3

Molecular Weight: 165.39

Percent Composition: Ni 70.98%, O 29.02%

Literature References: Contains a variable quantity of water.

Properties: Gray-black powder. Dec at ~600° into NiO and oxygen. Insol in water; very slightly sol in cold acid; dissolved by hot HCl with evolution of Cl, and by hot H2SO4 or HNO3 with evolution of oxygen.