Characteristic

Cobalt(II) oxalate is the inorganic compound with the formula of CoC₂O₄. Like other simple inorganic oxalates, it is a coordination polymer. The oxalate ligands bridge of Co(OH₂)₂ centres. Each cobalt adopts octahedral coordination geometry.

Chemical formula:CoC₂O₄

Molar mass:146.9522 g/mol

Appearance:gray/pink powder

Odor:odorless

Density:3.01 g/cm³

Melting point:250 °C (482 °F; 523 K) (decomposes)

Application

It is used in the preparation of cobalt catalysts, and cobalt metal powder for powder-metallurgical applications. It is made in process of recycling lithium-ion batteries, where the cobalt is obtained from cathode material (LiCoO2) by leaching with sulfuric acid and then precipitated with ammonium oxalate.