Colorless cubic crystal, white or off-white, granular, honeycomb block, spheroid, irregular granular, powdered. Colorless cubic crystal, white or off-white, granular, honeycomb block, spheroid, irregular granular, powdered. Slightly toxic, odorless, slightly bitter taste. Extremely hygroscopic and easily deliqued when exposed to air. Easily soluble in water, while releasing a large amount of heat (calcium chloride dissolution enthalpy of -176.2cal/g), its aqueous solution is slightly acidic. Soluble in alcohol, acetone, acetic acid. Reacting with ammonia or ethanol, CaCl2·8NH3 and CaCl2·4C2H5OH complexes were formed, respectively. At low temperature, the solution crystallizes and precipitates as a hexahydrate, which is gradually dissolved in its own crystalline water when heated to 30 ° C, and gradually loses water when heated to 200 ° C, and becomes a dihydrate when heated to 260 ° C, which becomes a white porous anhydrous calcium chloride. Slightly toxic, odorless, slightly bitter taste. Extremely hygroscopic and easily deliqued when exposed to air. Easily soluble in water, while releasing a large amount of heat (calcium chloride dissolution enthalpy of -176.2cal/g), its aqueous solution is slightly acidic. Soluble in alcohol, acetone, acetic acid. Reacting with ammonia or ethanol, CaCl2·8NH3 and CaCl2·4C2H5OH complexes were formed, respectively. At low temperature, the solution crystallizes and precipitates as a hexahydrate, which is gradually dissolved in its own crystalline water when heated to 30 ° C, and gradually loses water when heated to 200 ° C, and becomes a dihydrate when heated to 260 ° C, which becomes a white porous anhydrous calcium chloride.