Hydrogen fluoride, liquid industrial solvent

More and more, however, other solvents are coming into use in the laboratory and in industry. Aside from organic solvents such as alcohols, acetone, and hydrocarbons, which have been in use for many years, industrial processes use such solvents as sulfuric acid, hydrogen fluoride, ammonia, molten sodium hexafluoroaluminate (cryolite), various other ionic liquids (Welton, 1999), and liqnid metals, lander and Lafrenz (1970) cite the industrial use of bromine to separate caesium bromide (sol y 19.3g/100g bromine) from the much less soluble rubidium salt. The list of solvents available for preparative and analytical purposes in the laboratory now is long and growing, and though water will still be the first solvent that comes to mind, there is no reason to stop there. 

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