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Send EmailLanthanum Iodide, Lanthanum (III) iodide, 13813-38-4
🔢 Lanthanum Iodide
CAS No: 13813-38-4 Chemical Formula: LaI₃
A) Technical Properties
| Property | Value |
|---|---|
| Molecular Weight | 487.63 g/mol |
| Appearance | White to pale yellow crystalline solid |
| Solubility | Soluble in water and alcohol |
| Melting Point | ~850 °C |
| Density | ~5.1 g/cm³ |
| Purity | ≥99.9% (high-purity grade) |
| Hygroscopicity | High — requires moisture protection |
| Packaging | Vacuum-sealed or inert atmosphere jars |
B) Application Areas
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Halogen Lamps: Used in high-intensity discharge lamps and metal halide lighting.
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Optoelectronics: Applied in infrared detectors and specialized optical devices.
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Scintillators: Serves as a host matrix in certain radiation detection systems.
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Research & Development: Used in synthesis of lanthanide-based compounds and materials.
C) Alternatives
| Application Area | Alternatives | Notes |
|---|---|---|
| Halide Lighting | Lanthanum Bromide, Cerium Iodide | Different emission spectra and stability |
| Scintillators | Lanthanum Fluoride, Lanthanum Bromide | Varying light yield and decay time |
| Optoelectronics | Yttrium Iodide, Lutetium Iodide | Different bandgap and optical response |
D) Production Process
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Source: Typically derived from lanthanum oxide or carbonate.
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Reaction: Reacted with hydroiodic acid (HI) to form LaI₃ solution.
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Crystallization: Controlled evaporation yields crystalline iodide form.
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Drying & Packaging: Due to high hygroscopicity, packed under inert conditions.
E) Synonyms / Other Names
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Lanthanum(III) iodide
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LaI₃
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Rare earth iodide
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Iodide form of lanthanum salt
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Halide-grade lanthanum iodide
