Lithium iodide
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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.[2] It crystallizes in the NaCl motif.[3] It can participate in various hydrates.[4]
Quick Facts Identifiers, Properties ...
Identifiers | |
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3D model (JSmol) |
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ChemSpider |
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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) [1] | |
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).
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