Used in the production of fluorine gas through electrolysis, where it serves as a key component in the electrolyte mixture due to its ability to conduct electricity and release fluorine at the anode. Employed in metal surface treatment processes, especially for cleaning and etching aluminum and magnesium alloys, improving adhesion for painting or coating. Acts as a catalyst or reagent in organic synthesis, particularly in fluorination reactions where controlled introduction of fluorine atoms into molecules is required. Utilized in the preparation of other fluoride salts and in some glass etching formulations. Also found in certain specialty cleaning agents for industrial equipment where strong yet manageable acidity is needed.