Molecular formula:

                  Co3o4

1. Chemical property

 Co  (%)

                       73~73.5

 Li   (%)

                       ≦0.10

 Fe  (%) 

                       ≦0.001

 Mn  (%)

                       ≦0.001

 Na  (%)

                       ≦0.1

 Ca  (%)

                       ≦0.03

 Cu  (%) 

                       ≦0.01

 Mg  (%)

                       ≦0.02

 Pd  (%)

                       ≦0.01

 SO42- (%)

                       Trace

 NO3-  (%)

                       ≦0.05

 CL-  (%)

                       Trace

Formula weight

                       240.80

2. Physical Property

 Color

                       Black

 Sharp

                      Sphericity

 Tap density(g/m3)

                      >2.0g/m3

 Apparent density(g/m3)

                      >0.5g/m3

 Particle size

                      D50=8~20um

 Phase

                      Without others

Cobltosic oxide Exposed to air that easy absorption of moisture, but do not generate hydrate. 

Easy soluble in nitric acid.

Heated to 1200℃will be decomposed into cobalt oxide. In a hydrogen flame moderate heat to 900℃, reduced to metallic cobalt.