Barium chloride
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| Names | |
|---|---|
| Other names | |
| Identifiers | |
| CAS number | |
| PubChem | |
| EC number | 233-788-1 |
| RTECS number | CQ8750000 (anhydrous) CQ8751000 (dihydrate) |
| SMILES | [Ba+2].[Cl-].[Cl-] |
| Properties | |
| Molecular formula | BaCl2 |
| Molar mass | 208.23 g/mol (anhydrous) 244.26 g/mol (dihydrate) |
| Appearance | White solid |
| Density | 3.856 g/cm3 (anhydrous) 3.0979 g/cm3 (dihydrate) |
| Melting point |
962 °C, 1235 K, 1764 °F |
| Boiling point | |
| Solubility in water | 31.2 g/100 mL (0 °C) 35.8 g/100 mL (20 °C) 59.4 g/100 mL (100 °C) |
| Solubility | soluble in methanol, insoluble in ethanol, ethyl acetate[2] |
| -72.6·10−6 cm3/mol | |
| Structure | |
| Crystal structure | orthogonal (anhydrous) monoclinic (dihydrate) |
| Coordination geometry |
7-9 |
| Thermochemistry | |
| Std enthalpy of formation ΔfH |
−858.56 kJ/mol |
| Hazards | |
| Main hazards | Acute Toxic |
| NFPA 704 |
0
3
0
|
| Flash point | Non-flammable |
| U.S. Permissible exposure limit (PEL) |
TWA 0.5 mg/m3[3] |
| Related compounds | |
| Other anions | Barium fluoride Barium bromide Barium iodide |
| Other cations | Beryllium chloride Magnesium chloride Calcium chloride Strontium chloride Radium chloride Lead chloride |
Barium chloride is a chemical substance. It is among the most important salts of barium. It is soluble in water. It is a poison. When it is heated, it gives a yellow or green color to the flame. It is hygroscopic, meaning that it attracts water from the air. It is mainly used to purify brine but applications include fireworks.
Barium chloride is toxic. Sodium sulfate may be an antidote.
References
- ↑ Chemical Recreations: A Series of Amusing and Instructive Experiments, which May be Performed with Ease, Safety, Success, and Economy ; to which is Added, the Romance of Chemistry : An Inquiry into the Fallacies of the Prevailing Theory of Chemistry : With a New Theory and a New Nomenclature (1834)R. Griffin & Company. Retrieved 2023-03-13.
- ↑ Handbook of Chemistry and Physics, 71st edition, CRC Press, Ann Arbor, Michigan, 1990.
- ↑ NIOSH Pocket Guide to Chemical Hazards. #0045National Institute for Occupational Safety and Health (NIOSH).
