... dehydrate classifications:a. calcium chloride dehydrate(flake one): 70% ,72%,74%,76%b. calcium chloride dehydrate(granular one): 72%,76%c ... for industrial use ItemType 1Type 2Type 3CaCL2%≥68.0-70.074.0-77.090.0-95.0Mg and alkali-chloride(Nacl)%554Insoluble matter ... .1Alkalinity (Ca(OH)2)% %≤0.350.350.35Arsenic (As) %≤0.00030.00030.0003Heavy metal (Pb)%≤0.0010.0010.001 (74,77,94%) calcium chloride