Calcium chloride anhydrate Content% 94min Magnesium & alkali metal chloride% 2.5max Water-insoluble matter% 0.1max Sulphate% 0.1max Alkalinity% 0.2max Calcium chloride dihydrate Content% 74 min Magnesium & alkali metal chloride% 2.5max Water-insoluble matter% 0.1max Sulphate% 0.1max Alkalinity% 0.2max