1-Butyl-3-methylimidazolium tetrachloroferrate(III), CAS: 359845-21-9

Key Applications:

Magnetically Responsive Solvents and Separation Media

• Functions as a magnetic ionic liquid (MIL) with tunable magnetic susceptibility, enabling remote, non‑contact manipulation of the solvent phase.
• Applied in liquid–liquid extraction systems where magnetic fields facilitate rapid phase disengagement and solvent recovery.
• Used in selective metal ion extraction, particularly for Fe‑based, lanthanide, and transition‑metal separations in hydrometallurgical workflows.

Catalysis and Reaction Media

• Serves as a Lewis acidic catalytic medium, supporting transformations such as Friedel–Crafts alkylation, esterification, and polymerization.
• Provides a dual‑function environment (ionic + magnetic) that enhances catalyst recyclability through magnetic retrieval.
• Employed as a task‑specific solvent for reactions requiring strong coordination to substrates or intermediates.

Electrochemical and Magnetic Materials Research

• Investigated as a component in magneto‑electrochemical systems, where magnetic fields modulate ionic transport or electrode processes.
• Used in the development of magnetically switchable electrolytes, enabling field‑controlled conductivity or viscosity.
• Supports fabrication of smart fluids and stimuli‑responsive materials, including magneto‑rheological formulations.

Environmental and Analytical Applications

• Enables magnetically assisted microextraction (MA‑ME) techniques for trace analyte enrichment in environmental and biological samples.
• Utilized in solvent‑free or reduced‑solvent analytical workflows, where magnetic recovery minimizes waste and simplifies cleanup.

Nanomaterials and Hybrid Systems

• Acts as a stabilizing and dispersing medium for magnetic nanoparticles, improving colloidal stability and enabling field‑guided assembly.
• Supports synthesis of ionic‑liquid‑coated magnetic nanocomposites for catalysis, sensing, and adsorption.

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