Hydrofluoric acid

Hydrofluoric acid 55%
English name: Hydrofluoric acid
CAS number: 7664-39-3
Relative molecular weight: 20.01
HS:2811119000
UN Code: 1790

The ability of hydrofluoric acid to dissolve oxides plays an important role in the purification of aluminum and uranium. Hydrofluoric acid is also used to etch glass, which can engrave patterns, mark scales, and text; The semiconductor industry uses it to remove oxides on the surface of silicon. In refineries, it can be used as a catalyst for the alkylation reaction of isobutane and n-butene. Hydrofluoric acid is also used in the "acid leaching" process to remove oxygen-containing impurities on the surface of stainless steel. Hydrofluoric acid is also used in the synthesis of various fluorinated organic compounds, such as Teflon and refrigerants like Freon.