Who knows the harm of ammonium bifluoride to people?

It can corrode glass and is corrosive to skin. It can be used as chemical reagent, glass corrosive (used in combination with hydrofluoric acid), disinfectant and preservative in fermentation industry, solvent for preparing metallic beryllium from beryllium oxide, and surface treatment agent for silicon steel sheet. It can also be used for cleaning and descaling ceramics, magnesium alloys, boiler water supply systems and steam generation systems, as well as acid treatment of oilfield sandstone, and can also be used as a catalyst component for alkylation and isomerization.