Description CAS#: 13478-33-6 | Formula: Co(ClO4)2.6H2O | Specifications: Chloride 0.01 % Max, Cobalt content (by EDTA) (%) 15.5 - 16.7 %, Insoluble 0.01 % Max, pH of 5% solution 1 - 4 pH, Sulfate 0.005 % Max