Oil-miscible alkyl ammonium organophosphate ionic liquids such as tetrabutylammonium bis(2-ethylhexyl) phosphate ([N4444][DEHP]) have demonstrated unique potential to bind metals and/or metal oxides; an important attribute that metal processors and water purification experts can utilize. Such ionic liquids have become the model compounds in the extraction of lanthanide metals from their ores. A key structural feature of these organo-phosphate ionic liquids is the long ethyl hexyl chains that provide better oil solubility (poor water solubility) and higher thermal stability. Potential applications include: • Quartz collecting media • Metal oxide solubilizer • Electric arc furnace dust processing reagent • Collector of precious metals from ores • Ashless lubricant in neat form or as additives • Phase-transfer catalyst • Coating material • Surfactant • Corrosion inhibitor • Antimicrobial agent
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