Calcium iodide
Description
Calcium iodide (CaI₂) is a white to pale yellow, hygroscopic crystalline solid formed by the ionic bonding of calcium (Ca²⁺) and iodide (I⁻) ions in a hexagonal or rhombohedral lattice.
Properties
It has high water solubility (66–121 g/100 mL at 20°C), density around 3.96 g/cm³, melting point 779°C, and boiling point ~1100°C; it is also soluble in alcohols and acetone but reacts with CO₂ in air to form calcium carbonate and iodine.
Production
Prepared by neutralizing calcium carbonate, oxide, or hydroxide with hydroiodic acid, or by direct reaction of calcium metal with iodine gas at 200–400°C, followed by purification to remove moisture sensitivity.
Main uses
Employed as a reagent in analytical chemistry, photography, and pharmaceutical preparations; also used in organic synthesis as a catalyst or reducing agent, though limited industrially due to instability in moist air.
Specifications
| Model No. | N-CH1518 |
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