Definition and Usage :
Hydrofluoric acid, The name given to the solution of the compound hydrogen fluoride in water. It is used especially in the glass processing industry. Since it has a corrosive effect on glass, it cannot be stored in glass bottles. It is a clear liquid and is defined as HF.
Hydrofluoric acid is a, hydrogen fluoride (HF) in solution, water. It is the precursor of almost all fluorine compounds, including pharmaceuticals such as fluoxetine (Prozac), various materials such as PTFE (Teflon), and elemental fluorine itself. It is a very corrosive, colorless solution that can dissolve many materials, especially oxides. Its ability to dissolve glass has been known since the 17th century, before Carl Wilhelm Scheele prepared it in large quantities in 1771. Due to its high reactivity towards glass and its moderate reaction to many metals, hydrofluoric acid is usually stored in plastic containers (although PTFE is slightly permeable).