Characteristic

Barium iodide is an inorganic compound with the formula BaI₂. The compound exists as an anhydrous and a hydrate (BaI₂(H₂O)₂), both of which are white solids. 

Chemical formula：BaI₂ (anhydrous)

                                BaI₂·2H₂O (dihydrate)

Molar mass：391.136 g/mol (anhydrous)

                       427.167 g/mol (dihydrate)

Appearance：White orthorhombic crystals (anhydrous) colorless crystals (dihydrate)

Odor：odorless

Density：5.15 g/cm³ (anhydrous)

               4.916 g/cm³ (dihydrate)

Melting point：711 °C (1,312 °F; 984 K) (anhydrous)

decomposes at：740 °C (dihydrate)

Solubility in water： 166.7 g/100 mL (0 °C)

                                  221 g/100 mL (20 °C)

                                  246.6 g/100 mL (70 °C)

Solubility：soluble in ethanol, acetone

Magnetic susceptibility (χ)：-124.0·10⁻⁶ cm³/mol

Crystal structure：Orthorhombic, oP12

Application

Preparation of other iodides.