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Hydrofluoric Acid
Product name: Hydrofluoric Acid
CAS NO.: 7664-39-3
Molecular weight: 20.01
EC NO.: 231-634-8
Molecular formula:


InChI: InChI=1/FH/h1H/i/hD
Structure formula:
Physicochemical properties:

Hydrofluoric acid Aqueous solution of hydrogen fluoride gasl. It is cololess,transparent to light yellow smoke liquid.It has irritating ordor.Relative density: 1.15~1.18.Boiling point 112.2℃ Usual concentration in the market:about 47% .The most concentrated density:1.14g/cm3,Boiling point393.15K(120℃) Hydrofluoric acid can dissolve glass which many other acid cannot. The formula of reaction is as follows: SiO2(s) + 6 HF(aq) → H2SiF6(aq) + 2 H2O(l) Hydrofluoric acid is also a reducing agent.

Uses: As hydrofluoric acid has the ability to dissolve oxides, it plays an important role in purification of aluminum and uranium. Hydrofluoric acid It can also used to etch glass as the semiconductor industry use it to remove the silicon oxide surface, and it can be used in refineries and butane, isobutane alkylation catalyst. Hydrofluoric Acid is also used in the removal of oxygen-containing impurities on the surface of stainless steel; Hydrofluoric Acid is also used for the synthesis of a variety of fluorine-containing organic compounds such as Teflon and Freon refrigerant