Lithium iodide
Lithium iodide, or LiI, is a compound of lithium and iodine. When exposed to air, it becomes yellow in color, due to the oxidation of iodide to iodine. It crystallizes in the NaCl motif. It can participate in various hydrates.
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3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.030.735 |
PubChem CID |
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| UNII |
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CompTox Dashboard (EPA) |
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| Properties | |
| LiI | |
| Molar mass | 133.85 g/mol |
| Appearance | White crystalline solid |
| Density | 4.076 g/cm3 (anhydrous) 3.494 g/cm3 (trihydrate) |
| Melting point | 469 °C (876 °F; 742 K) |
| Boiling point | 1,171 °C (2,140 °F; 1,444 K) |
| 1510 g/L (0 °C) 1670 g/L (25 °C) 4330 g/L (100 °C) | |
| Solubility | soluble in ethanol, propanol, ethanediol, ammonia |
| Solubility in methanol | 3430 g/L (20 °C) |
| Solubility in acetone | 426 g/L (18 °C) |
| −50.0·10−6 cm3/mol | |
Refractive index (nD) |
1.955 |
| Thermochemistry | |
Heat capacity (C) |
0.381 J/g K or 54.4 J/mol K |
Std molar entropy (S⦵298) |
75.7 J/mol K |
Std enthalpy of formation (ΔfH⦵298) |
-2.02 kJ/g or −270.48 kJ/mol |
Gibbs free energy (ΔfG⦵) |
-266.9 kJ/mol |
| Hazards | |
| NFPA 704 (fire diamond) | |
| Flash point | Non-flammable |
| Safety data sheet (SDS) | External MSDS |
| Related compounds | |
Other anions |
Lithium fluoride Lithium chloride Lithium bromide Lithium astatide |
Other cations |
Sodium iodide Potassium iodide Rubidium iodide Caesium iodide Francium iodide |
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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