Description CAS#: 13446-19-0 | Formula: Mg(ClO4)2.6H2O | Specifications: Chloride 0.003 % Max, Heavy metals (Pb) 0.0005 % Max, Insoluble 0.005 % Max, Iron 0.0005 % Max, pH of 5% solution @ 25 C 5.0 - 8.0 pH, Sulfate 0.002 % Max