Calcium chloride, a salt composed of chlorine and calcium elements, has the chemical formula CaCl2. It is a typical ionic halide, existing as a white solid at room temperature. Its common applications include saltwater for refrigeration equipment, road de-icers, and desiccants. Due to its hygroscopic nature, which causes it to absorb moisture from the air and deliquesce, anhydrous calcium chloride is stored sealed in containers. Calcium chloride, its hydrates, and solutions have significant applications in various fields, including food manufacturing, construction materials, and biology.