Calcium Chloride Dihydrate refers to a hydrate that is the dihydrate form of calcium chloride. It is a salt substance that is solid at normal room temperature and it behaves as a typical ionic halide. It has several common applications such as brine for refrigeration plants, ice, and dust control on roads, and in cement. Calcium Chloride Dihydrate has several similar uses as sodium chloride and as a food additive, preservatives and for de-icing roads in winter and as brine in refrigeration plants. It is also used as a chemical in swimming pools, and in water treatment plants, and for desiocation purposes too.