Packing: 1kg/bag

Item	Criterion of detection
	Battery grade	Electroplate grade	Industry grade
Co	≧21%	≧20%	≧20%
Ni	≦0.001%	≦0.002%	≦0.8%
Fe	≦0.001%	≦0.002%	≦0.05%
Cu	≦0.001%	≦0.002%	≦0.02%
Zn	≦0.001%	≦0.002%	≦0.03%
Pb	≦0.001%	≦0.002%	≦0.08%
Molecular formula	CoSO4.7H2O
Shape and properties	Brown red crystal, lost 7H2O at 420 ℃, soluble in water and methanol, slightly soluble in ethanol, easy weathering in the air.
Application	cobaltous nitrate used in the manufacture of cobalt salt catalyst, additive and plating paint drying agent, cobalt pigments, alkaline battery…