<P> In metalworking , hydrofluoric acid is used as a pickling agent to remove oxides and other impurities from stainless and carbon steels because of its limited ability to dissolve steel . It is used in the semiconductor industry as a major component of Wright Etch and buffered oxide etch , which are used to clean silicon wafers . In a similar manner it is also used to etch glass by reacting with silicon dioxide to form gaseous or water - soluble silicon fluorides . It can also be used to polish and frost glass . </P>
<P> In metalworking , hydrofluoric acid is used as a pickling agent to remove oxides and other impurities from stainless and carbon steels because of its limited ability to dissolve steel . It is used in the semiconductor industry as a major component of Wright Etch and buffered oxide etch , which are used to clean silicon wafers . In a similar manner it is also used to etch glass by reacting with silicon dioxide to form gaseous or water - soluble silicon fluorides . It can also be used to polish and frost glass . </P>
which acid is used to write on glass
which acid is used to write on glass
hydrofluoric acid
hydrofluoric acid