Calcium chloride is an inorganic compound, a salt with the chemical formula CaCl 2. It is a white crystalline solid at room temperature, and it is highly soluble in water. It can be created by neutralising hydrochloric acid with calcium hydroxide.
Calcium chloride is used as a firming agent in canned vegetables, to firm soybean curds into tofu, and to make a caviar substitute from vegetable or fruit juices. It’s commonly used in sports drinks and other beverages, including bottled water, as an electrolyte.