|
Molecular Formula
|
CoSO4กค7H2O |
M.W.
|
281.10
|
|
Property
|
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.
|
|
Appearance
|
red crystal with light brown
|
|
Specification
|
%
|
| Item |
High-grade |
First-grade |
| Assay (Co) |
20.0 min. |
20.0min |
| Insoluble in Water |
0.02 max. |
0.02 max. |
| Chloride (Cl) |
0.05 max. |
0.1 max. |
| Nitrate(NO3) |
0.2 max. |
0.5max. |
| Mn |
0.05 max. |
0.05 max. |
| Fe |
0.002max. |
0.005 max. |
| Ni |
0.05max |
0.1 max. |
| Zn |
0.05 max. |
0.05 max. |
| Heavy Metal (as Cu) |
0.005 max. |
0.02 max. |
|
|
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
|
Woven bags lined with plastic bag.25Kg net each |
|
Price(USD/MT)
|
Negotiable
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