When The Glass Hits Hydrofluoric Acid

- Mar 30, 2018-

When the glass hits hydrofluoric acid, it will be corroded. Because fluorine is an active element, it can react chemically with almost all elements. Fluorine and hydrogen combine to produce hydrogen fluoride, and hydrogen fluoride dissolves in water to become hydrofluoric acid. Hydrofluoric acid (HF) is an anaerobic acid formed by halogen elements. It has a very strong corrosiveness and chemical reactions occur when it encounters glass. How does hydrofluoric acid react with glassware? Originally, glassware was mostly made of soda lime silicate glass, and its main component was silicon dioxide. Silica is a colorless, transparent or white powder with a high melting point, hard and infusible, and insoluble in water. Natural silica, commonly known as silica, is one of the constituents of rock. Silica encounters hydrofluoric acid and generates volatile silicon tetrafluoride gas and water. The glass is then eroded into frosted glass. The chemical formula of the reaction between the two is: SiO2+4HF==SiF4+2H2O The beautiful home glass etched on the surface. Hydrofluoric acid is a "craftsman" that etched glass. Using this characteristic of it, various beautiful patterns can be carved on the glass craftwork. The specific method is to dip the glassware into the molten paraffin first, then cut the pattern into a pattern with a knife, apply hydrofluoric acid, or put it into hydrogen fluoride gas for corrosion. When the residual hydrofluoric acid is washed away and paraffin is scraped off, a beautiful pattern is left on the glassware. This method is also used to scale or add to the inner surface of glass chemical instruments such as measuring cylinders and burettes. Laboratory glassware. In industry, acid polishing is widely used to make glass surfaces have different effects. Before acid polishing, that is, before hydrofluoric acid is applied, glassware is soaked in different acids to make it work better. As a side note, because hydrofluoric acid can corrode glass, do not store hydrofluoric acid in glass containers.