Description CAS#: 13455-31-7 | Formula: Co(ClO4)2.2H2O | Specifications: Chloride 0.01 % Max, Cobalt content (by EDTA) (%) 19.0 - 21.0 %, Insoluble matter 0.01 % Max, pH of 5% solution 1 - 4 pH, Sulfate 0.005 % Max