The chemical formula for hydrogen fluoride is HF, which is a colorless, pungent, and water-soluble toxic gas. The relative molecular weight of hydrogen fluoride is 20.008, with a standard gas density of 0.922 kg/m ³, a melting point of -83.37 ℃, and a boiling point of 19.51 ℃. It has hygroscopicity and emits smoke when it absorbs moisture in air.
Hydrogen fluoride, as a solute, is a weak acid, while as a solvent, it is a strong acid. It can react with most metals, react with oxides and hydroxides to produce water, and undergo substitution reactions with metal compounds such as chlorine, bromine, and iodine.
Hydrogen fluoride is a basic chemical product with a wide range of applications. In the electronics industry, anhydrous hydrogen fluoride is used as a raw material for electrolytic synthesis of nitrogen trifluoride and as an etchant in semiconductor manufacturing processes; In the petrochemical industry, it serves as a liquid catalyst for alkylating aromatic and aliphatic compounds to produce high octane gasoline; In the chemical industry, it is widely used to produce chlorofluorocarbons by replacing chlorine in halogenated hydrocarbons with fluorine; Hydrogen fluoride can also be used to produce fluorine and hydrofluoric acid.
