Formula, CoSO4.7H2O
M.W:. 281.10
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
Assay (Co). 21 min.
Water-insoluble-matter. 0.02 max
Chloride (Cl). 0.05 max.
Nitrate(NO3). 0.05 max
Mn. 0.05 max.
Fe, 0.002max.
Ni. 0.1 max
Zn. 0.05 max.
Heavy Metal (as Cu). 0.005 max.
Application. 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 net. Double plastic bags lined plastic woven sack