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Send EmailLanthanum, Lanthanum Metal, Elemental Lanthanum, 7439-91-0
🔢 Lanthanum Metal
CAS No: 7439-91-0 Chemical Formula: La
A) Technical Properties
| Property | Value |
|---|---|
| Atomic Number | 57 |
| Atomic Weight | 138.90547 g/mol |
| Melting Point | 920 °C |
| Boiling Point | 3464 °C |
| Density | 6.162 g/cm³ |
| Appearance | Silvery-white, soft metal |
| Electrical Conductivity | Moderate |
| Magnetic Behavior | Paramagnetic |
| Purity | ≥99.9% (commercial grade) |
| Packaging | Vacuum-sealed under inert gas |
B) Application Areas
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NiMH Batteries: Used in lanthanum-nickel alloys for rechargeable batteries, especially in hybrid vehicles.
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Hydrogen Storage: Forms metal hydrides that absorb hydrogen gas.
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Optical Glass: Enhances refractive index and clarity in high-performance lenses.
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Petroleum Refining: Acts as a catalyst carrier in fluid catalytic cracking (FCC).
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Metallurgy: Improves castability and grain structure in aluminum and iron alloys.
C) Alternatives
| Application | Alternatives | Notes |
|---|---|---|
| Battery Alloys | Praseodymium, Neodymium | Stronger magnetic properties |
| Hydrogen Storage | Titanium, Magnesium alloys | Lighter but lower hydrogen capacity |
| Optical Additives | Cerium, Yttrium | Different optical and thermal behavior |
| Catalyst Support | Zirconium, Alumina | Higher temperature resistance |
D) Production Process
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Source Minerals: Extracted from monazite or bastnäsite ores.
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Leaching: Dissolved using acid or base to separate rare earths.
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Solvent Extraction: Lanthanum is isolated from other REEs.
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Reduction: Lanthanum oxide (La₂O₃) is reduced using calcium or lithium to produce metallic lanthanum.
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Packaging: Stored in inert atmosphere to prevent oxidation.
E) Synonyms / Other Names
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Lanthanum
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Elemental Lanthanum
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La metal
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Metallic Lanthanum
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Pure Lanthanum
🧪 Complete Lanthanum Derivatives – Chemical Formula, CAS, and Application Table
| No | Compound Name | Chemical Formula | CAS No | Description / Application Area |
|---|---|---|---|---|
| 1 | Lanthanum Metal | La | 7439-91-0 | Pure metal form used in batteries and alloy production |
| 2 | Lanthanum Oxide | La₂O₃ | 1312-81-8 | White powder for glass, ceramics, and catalyst systems |
| 3 | Lanthanum Carbonate | La₂(CO₃)₃·xH₂O | 54451-24-0 | Phosphate binder in medical and ceramic applications |
| 4 | Lanthanum Nitrate | La(NO₃)₃·6H₂O | 10277-43-7 | Water-soluble crystals for glass and laboratory use |
| 5 | Lanthanum Sulfate | La₂(SO₄)₃ | 10099-60-2 | Soluble powder used in pigments and catalyst supports |
| 6 | Lanthanum Chloride | LaCl₃·7H₂O | 10025-84-0 | Intermediate for solution prep and lab synthesis |
| 7 | Lanthanum Acetate | La(CH₃COO)₃ | 917-70-4 | Organic synthesis and surface coating applications |
| 8 | Lanthanum Suspension | La₂O₃ dispersion | — | Nanoform for coatings and electronic applications |
| 9 | Lanthanum Hydroxide | La(OH)₃ | 14507-19-8 | Precursor for ceramics and catalysts, used in basic solutions |
| 10 | Lanthanum Fluoride | LaF₃ | 13709-38-1 | Optical glass, laser crystals, and fluorinated coatings |
| 11 | Lanthanum Bromide | LaBr₃ | 13536-79-3 | Scintillation detectors and nuclear applications |
| 12 | Lanthanum Iodide | LaI₃ | 13813-38-4 | Halogen lamps and optoelectronic devices |
📌 Notes
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Items 1–7 are the most commercially available and commonly imported forms.
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Items 8–12 are used in specialized applications such as nuclear, optical, and nanotechnology.
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Suspension and dispersion forms are typically manufacturer-specific and may not have a fixed CAS number.
