Why Can't Sulfuric Acid Corrode Glass Containers?

Nov. 08, 2018

The main component of the glass is quartz stone (SiO2), sulfuric acid is a strong acid and silica is an acidic oxide. Therefore, the acid which does not cause the corrosion of the glass is hydrofluoric acid (HF). The glass is more beautiful and transparent. It does not rust or resist corrosion. These advantages are unmatched by other materials such as various fine metals, masonry and wood. The glass beads excavated from the Egyptian tombs have been buried underground for more than 4,000 years, and still shine like beautiful colors as they were made that year.

In addition, glass has a transparent property and is widely used as a glass window, an optical instrument glass, and various chemical and living containers. People in various experiments in chemistry, always hope to directly see the chemical reaction in the container, which is only glass can be competent, because it is transparent, but also resistant to the corrosion of various chemicals.

When a general metal encounters an acid, a chemical reaction occurs. Even the more stable "king of metal" gold is tamed and dissolved when it encounters "aqua regia" which is a mixture of nitric acid and hydrochloric acid. Only glass is not afraid of the erosion of hydrochloric acid, sulfuric acid, nitric acid or even aqua regia. Only caustic can slightly corrode the surface layer of the glass. Therefore, glass became the darling of chemists, and even became the chemist's nickname "glass test tube expert."

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