ChemicalBook--->CAS DataBase List--->13718-00-8

13718-00-8

13718-00-8 Structure

13718-00-8 Structure
IdentificationBack Directory
[Name]

Barium iodide
[CAS]

13718-00-8
[Synonyms]

BARIUM IODIDE
[EINECS(EC#)]

237-276-9
[Molecular Formula]

BAI2
[MDL Number]

MFCD00003452
[MOL File]

13718-00-8.mol
[Molecular Weight]

391.14
Chemical PropertiesBack Directory
[Appearance]

Colorless crystals, decomposes and reddens on exposure to air.Soluble in water; slightly soluble in alcohol.
[Uses]

Preparation of other iodides.
[CAS DataBase Reference]

13718-00-8
Hazard InformationBack Directory
[Chemical Properties]

Colorless crystals, decomposes and reddens on exposure to air.Soluble in water; slightly soluble in alcohol.
[Physical properties]

Barium iodide occurs in two forms, one anhydrous and the other as a dihydrate. Both are white solids. This salt is stable, but air and light sensitive. It is also hygroscopic and moisture sensitive. Barium iodide is incompatible with strong oxidizing agents.
[Preparation]

Barium iodide is made by the neutralization of barium carbonate with HI in water:
BaCO3+2HI (aq)→BaI2 (aq)
It is also made by the reaction of BaH2 with ammonium iodide in pyridine:
BaH2+2NH4I (aq)→BaI2 (aq)+ 2NH3 (gas)+H2 (gas)
The product crystallizes as the hydrate BaI2·2H2O. If this heated, dehydration to anhydrous BaI2 occurs. The dihydrate dehydrates at 539°C to form BaI2.
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