Barium iodide

Barium iodide[1]
Names
IUPAC name
Barium iodide
Other names
Barium iodide, anhydrous
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.873 Edit this at Wikidata
EC Number
  • 237-276-9
UNII
  • InChI=1S/Ba.2HI/h;2*1H/q+2;;/p-2 checkY
    Key: SGUXGJPBTNFBAD-UHFFFAOYSA-L checkY
  • InChI=1/Ba.2HI/h;2*1H/q+2;;/p-2
    Key: SGUXGJPBTNFBAD-NUQVWONBAS
  • I[Ba]I
  • [Ba+2].[I-].[I-]
Properties
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)
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
-124.0·10−6 cm3/mol
Structure
PbCl2-type (Orthorhombic oP12)
Pnma (No. 62)
Thermochemistry
-602.1 kJ·mol−1
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
toxic
Related compounds
Other anions
barium fluoride
barium chloride
barium bromide
Other cations
beryllium iodide
magnesium iodide
calcium iodide
strontium iodide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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. When heated, hydrated barium iodide converts to the anhydrous salt. The hydrated form is freely soluble in water, ethanol, and acetone.

  1. ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 4–44, ISBN 0-8493-0594-2