... 2. Features: 1)Calcium chloride, CaCl2, is a common salt. It behaves as a typical ionic halide, and is solid at room ... . As dryer to dry nitrogen, oxygen, hydrogen, hydrogen chloride and sulfur dioxide.2)Act as dehydration agent when producing alcohol, ... ester, aether and crylic acid.3)Calcium chloride is a kind of important cryogen used by ...