1-Ethyl-3-methylimidazolium dibutylphosphate, CAS: 869858-84-4

Key Applications:

• Tribochemical Reaction Media

• • EMIM DBP is explicitly identified as a key material for tribochemical reactions, where ionic liquids act as reactive lubricants that form protective boundary films under mechanical stress.
  • The dibutylphosphate anion provides surface‑active, polar functionality, enabling chemical film formation on metal surfaces during sliding or wear.
• Boundary & Mixed‑Regime Lubrication

• • Phosphate‑based ionic liquids are widely studied as anti‑wear and friction‑reducing additives in steel/steel and steel/aluminum contacts.
  • The anion’s affinity for metal oxides supports formation of phosphate‑rich tribofilms, improving wear resistance and reducing scuffing.
• High‑Temperature Lubricants

• • Imidazolium ionic liquids with organophosphate anions exhibit:
    • High thermal stability
    • Low volatility
    • Strong adsorption on metal surfaces
  • These properties make EMIM DBP suitable for high‑temperature mechanical systems, aerospace components, and industrial machinery.
• Catalytic & Reaction Media Applications

• • Phosphate‑based ionic liquids are used as acidic catalysts, phase‑transfer media, and solvents for:
    • Esterification
    • Transesterification
    • Biomass conversion
  • The dibutylphosphate anion imparts Brønsted acidity, enabling catalytic activity without added mineral acids.
• Biomass Processing & Extraction

• • Dialkylphosphate ionic liquids have been explored for:
    • Lignin dissolution
    • Cellulose swelling
    • Selective extraction of bio‑based chemicals
  • EMIM DBP’s amphiphilic structure supports solvation of both polar and moderately non‑polar substrates.
• Electrochemical & Materials Applications

• • Imidazolium ionic liquids are widely used in:
    • Electrolytes for capacitors and batteries
    • Ion‑conducting media for polymer composites
  • While EMIM DBP is less common than TFSI‑based ILs, its moderate viscosity and ionic conductivity (0.25 mS/cm at 25 °C) make it suitable for exploratory electrochemical research.
• Surfactant‑Like & Amphiphilic Applications

• • The dibutylphosphate anion provides hydrophobic alkyl chains plus a polar phosphate headgroup.
  • Useful in coatings, dispersions, and colloidal systems.

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