Calcium chloride Compounds Calcium chloride is an inorganic compound, a salt with the chemical formula CaCl. 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. Wikipedia Formula: CaCl2 IUPAC ID: Calcium chloride Molar mass: 110.98 g/mol Melting point: 772 °C Boiling point: 1,935 °C Density: 2.15 g/cm³ Soluble in: Water, Acetic acid, Acetone