object it contacts as it evaporates. Medical use For its medical uses, 1,1,1,2-tetrafluoroethane has the generic name norflurane. It is used as propellant for some metered dose inhalers. It is considered safe for this use. In combination with pentafluoropropane, it is used as a topical vapocoolant spray for numbing boils before curettage. It has also been studied as a potential inhalational anesthetic, but it is nonanaesthetic at doses used in inhalers. See also List of refrigerants Tetrabromoethane Tetrachloroethane References External links European Fluorocarbons Technical Committee (EFCTC) MSDS at Oxford University Concise International Chemical Assessment Document 11, at inchem.org Pressure temperature calculator R134a 2 phase computer cooling Fluoroalkanes Refrigerants Automotive chemicals Propellants Airsoft Excipients Greenhouse gases GABAA receptor positive allosteric modulators General anesthetics