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) 20 min.
Water-insoluble-matter 0.02 max
Chloride (Cl) 0.1 max.
Nitrate(NO3) 0.1 max
Mn 0.005 max.
Fe . 0.002max.
Ni 0.1 max
Zn 0.05 max.
Heavy Metal (as Cu) 0.002 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