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Send EmailLanthanum Bromide, Lanthanum (III) Bromide, 13536-79-3
🔢 Lanthanum Bromide
CAS No: 13536-79-3 Chemical Formula: LaBr₃
A) Technical Properties
| Property | Value |
|---|---|
| Molecular Weight | 378.62 g/mol |
| Appearance | White to pale yellow crystalline powder |
| Solubility | Soluble in water, alcohol, and acids |
| Melting Point | ~783 °C |
| Density | ~5.06 g/cm³ |
| Purity | ≥99.99% (scintillation-grade) |
| Thermal Stability | High |
| Hygroscopicity | High — requires moisture protection |
| Packaging | Vacuum-sealed or inert atmosphere containers |
B) Application Areas
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Scintillators: Used in gamma-ray spectroscopy and radiation detectors (e.g., LaBr₃:Ce) for high light yield and fast response.
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Nuclear Medicine & Security: Applied in portable detectors and medical imaging systems.
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Optical Crystals: Used in laser systems and precision optical devices.
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Research & Defense: Preferred in high-resolution radiation measurement systems.
C) Alternatives
| Application Area | Alternatives | Notes |
|---|---|---|
| Scintillators | Lanthanum Fluoride, Barium Fluoride | Different light yield and decay profiles |
| Optical Crystals | Cerium Bromide, Yttrium Bromide | Varying optical windows and hardness |
| Nuclear Detectors | NaI(Tl), CsI(Tl) | Lower resolution but more cost-effective |
D) Production Process
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Source: Typically derived from lanthanum oxide or carbonate.
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Reaction: Reacted with hydrobromic acid (HBr) to form LaBr₃ solution.
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Crystallization: Controlled evaporation yields high-purity crystalline form.
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Drying & Packaging: Due to hygroscopicity, packed under inert conditions.
E) Synonyms / Other Names
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Lanthanum(III) bromide
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LaBr₃
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Scintillation-grade lanthanum bromide
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Bromide form of rare earth compound
