Calcium Chloride Chemical formula – CaCl2 is a colorless crystalline solid at room temperature and highly soluble in water. Calcium Chloride Dihydrate ( Food Grade ) is a source of calcium for production of other salts as well as a source of calcium for foods and beverages. Calcium Chloride has a wide range of applications in various industries. The mineral Calcium Chloride is  widely used additive for the production of cheese.