An ionic liquid is a salt in the liquid state. In some contexts, the term has been restricted to salts whose melting point is below some arbitrary temperature, such as100 °C (212 °F). While ordinary liquids such as water and gasoline are predominantly made of electrically neutral molecules, Ionic liquids are largely made of ions and short-lived ion pairs. These substances are variously called liquid electrolytesionic meltsionic fluidsfused saltsliquid salts, or ionic glasses.

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