Barium 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.
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| ECHA InfoCard | 100.030.704 | |
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| Properties | ||
| 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 (1,764 °F; 1,235 K) (960 °C, dihydrate) | |
| Boiling point | 1,560 °C (2,840 °F; 1,830 K) | |
| 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 | ||
| orthogonal (anhydrous) monoclinic (dihydrate) | ||
| 7-9 | ||
| Thermochemistry | ||
| Std enthalpy of formation ΔfH |
−858.56 kJ/mol | |
| Hazards | ||
| Main hazards | Acute Toxic | |
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| 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 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | ||
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| Infobox references | ||
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. R. Griffin & Company. 1834. Archived from the original on 2023-03-13. Retrieved 2023-03-13.
- Handbook of Chemistry and Physics, 71st edition, CRC Press, Ann Arbor, Michigan, 1990.
- NIOSH Pocket Guide to Chemical Hazards. "#0045". National Institute for Occupational Safety and Health (NIOSH).
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