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Samarium (III) Fluoride (SmF3)

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Samarium (III) Fluoride (SmF3)
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Additional information

Item Number

FL62
Product Name

Samarium Fluoride (SmF3)
CAS Number

113765-24-7
M. F.

SmF3
Purity

99.99%; 99.999% (REO)
Form*

P
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Description:

Samarium(III) Fluoride (SmF₃) is an inorganic compound composed of samarium (Sm) and fluorine (F). It is a white or pale yellow crystalline powder that is insoluble in water but dissolves in strong acids. SmF₃ is primarily used in optics, metallurgy, electronics, and nuclear applications due to its unique electrical, optical, and magnetic properties.

Key Properties：

  • Chemical Formula: SmF₃
  • Molecular Weight: 207.35 g/mol
  • Appearance: White to pale yellow crystalline powder
  • Density: 6.7 g/cm³
  • Melting Point: ~1,306°C (2,383°F)
  • Boiling Point: Sublimates at high temperatures
  • Solubility:Insoluble in water/Soluble in strong acids (e.g., hydrochloric acid, nitric acid)
  • Crystal Structure: Orthorhombic

Applications:

Metallurgy & Magnet Production

  • Used as a precursor in the electrolytic production of samarium metal, which is crucial in high-performance Sm-Co (samarium-cobalt) permanent magnets.
  • Sm-Co magnets are used in aerospace, defense, electric motors, and high-temperature applications where NdFeB magnets may fail.

Optical Coatings & Glass Manufacturing

  • Enhances the optical properties of specialty glass and laser materials.
  • Used in infrared-transmitting glass, UV-blocking coatings, and optical fibers.

Electronics & Phosphors

  • Used in the production of phosphors for fluorescent lamps, LED displays, and X-ray screens.
  • Plays a role in dielectric materials for electronic components such as capacitors.

Nuclear Applications

  • SmF₃ is used in nuclear reactor control rods due to samarium’s ability to absorb neutrons, helping regulate nuclear fission reactions.

Catalysis & Chemical Processing

  • Functions as a catalyst in various chemical reactions, including polymerization and organic synthesis.

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