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Molecular Formula : CoSO4 .7H2O
Molecular Weight : 281.10
CAS NO. : 10026-24-1
Properties : It is a red crystal with light brown, soluble in water and methanol, but slightly soluble in ethanol and easily effloresces in air. Its specific gravity is 1.948.
Use : As starting material for making other cobalt salts; as a drying agent for paintings, cobalt pigment and glazed colored porcelain, additive of alkaline batteries and Co source for electroplating.
Storage : Store at a dry place. Avoid heating and damp.
Packing : 25Kg woven bags lined with plastic bag(special packing can be made according to clients' requirement).
Specification ( % )
|
Item |
Spec. |
|
Assay (Co) |
21.0 min. |
|
Ni |
0.001 max. |
|
Cu |
0.001 max. |
|
Mn |
0.001 max. |
|
Fe |
0.001max. |
|
Zn |
0.001 max. |
|
Pb |
0.001 max. |
|
Cd |
0.001 max. |
|
Ca |
0.001 max. |
|
Mg |
0.001 max. |
|
Na |
0.001 max. |
|
As |
0.001 max. |
|
K |
0.001 max. |
|
Cr |
0.001 max. |
|
Chloride (Cl) |
0.05 max. |
|
Nitrate(NO3) |
0.05max. |
|
Insoluble in Water |
0.02 max. |
|
Zn |
0.05 max. |
|
Heavy Metal (as Cu) |
0.005 max. |

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