Lithium bromide
Lithium bromide (LiBr) is a chemical compound of lithium and bromine. Its extreme hygroscopic character makes LiBr useful as a desiccant in certain air conditioning systems.
| Names | |
|---|---|
| IUPAC name
Lithium bromide | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.028.582 |
| EC Number |
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PubChem CID |
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| RTECS number |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| LiBr | |
| Molar mass | 86.845 g/mol |
| Appearance | White hygroscopic solid |
| Density | 3.464 g/cm3 |
| Melting point | 550 °C (1,022 °F; 823 K) |
| Boiling point | 1,300 °C (2,370 °F; 1,570 K) |
| 143 g/100 mL (0 °C) 166.7 g/100 mL (20 °C) 266 g/100 mL (100 °C) | |
| Solubility | soluble in methanol, ethanol, ether, acetone slightly soluble in pyridine |
| −34.3·10−6 cm3/mol | |
Refractive index (nD) |
1.7843 (589 nm) |
| Structure | |
| Cubic, Pearson symbol cF8, No. 225 | |
| Fm3m | |
a = 0.5496 nm | |
| Thermochemistry | |
Std molar entropy (S⦵298) |
74.3 J/mol K |
Std enthalpy of formation (ΔfH⦵298) |
-351.2 kJ/mol |
Gibbs free energy (ΔfG⦵) |
-342.0 kJ/mol |
| Hazards | |
| GHS labelling: | |
| Warning | |
| H315, H317, H319 | |
| NFPA 704 (fire diamond) | |
| Flash point | Not-flammable |
| Lethal dose or concentration (LD, LC): | |
LD50 (median dose) |
1800 mg/kg (oral, rat) |
| Related compounds | |
Other anions |
Lithium fluoride Lithium chloride Lithium iodide |
Other cations |
Sodium bromide Potassium bromide Rubidium bromide Caesium bromide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
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