An ionic liquid is a salt in which the ions are poorly coordinated, which results in these solvents being liquid below 100 deg Celcius,
or even at room temperature. At least one ion has a de-localized charge and one component is organic, which prevents
the formation of a stable crystal lattice. Properties, such as melting point, viscosity, and solubility of SRL ionic solvents are
determined by the substituents on the organic component and by the counterion. SRL offered ionic liquids have even
been developed for specific synthetic chemistry and biosynthesis. Ionic liquids are considered advantageous not only
because of their versatility but also for their "green" credentials, they hold high potential as green solvents because of
their lack of vapour pressure, and are opening up a burgeoningly new field of non-aqueous enzymology.