Used as an ionic liquid in extraction processes, particularly for separating metal ions such as rare earth elements (e.g., lanthanum and neodymium) and actinides from aqueous solutions. Its high solubility and selectivity make it effective in hydrometallurgy, nuclear fuel reprocessing, and lithium-ion battery recycling to recover valuable metals like cobalt, nickel, and manganese. Also applied in catalysis and as a solvent in organic reactions due to its thermal stability, low volatility, and low melting point. Suitable for use in electrochemical systems and as a phase-transfer catalyst in industrial syntheses. In research, it serves directly as an ionic liquid for accelerating chemical reactions or separations, leveraging its chemical stability.