Hydrogen fluoride, HF, is a colorless, fuming, and low boiling point liquid (mp -83 oC
and bp 19.5 oC), with an irritating odor. It is used for preparing inorganic and organic
fluorine compounds. Because of its high permittivity, it can be used as a special
nonaqueous solvent. The aqueous solution is called fluoric acid and is stored in
polyethylene containers since the acid corrodes glass.