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The chemical properties of Silicon Dioxide SiO2 products are relatively stable. Insoluble in water and does not react with water. It is an acidic oxide and does not react with common acids. Gaseous hydrogen fluoride reacts with Silicon Dioxide SiO2 products to form gaseous silicon tetrafluoride. Reacts with hot concentrated strong alkali solution or molten alkali to form silicates and water. React with various metal oxides at high temperature to form silicates. Used in the manufacture of quartz glass, optical instruments, chemical vessels, ordinary glass, refractory materials, optical fibers, ceramics, etc.

The nature of Silicon Dioxide SiO2 products is inactive, and it does not interact with halogens other than fluorine and hydrogen fluoride, hydrogen halides, sulfuric acid, nitric acid, and perchloric acid (except hot concentrated phosphoric acid). Common concentrated phosphoric acid (or pyrophosphoric acid) can corrode Silicon Dioxide SiO2 products at high temperature to form heteropolyacids, and molten borate or boron anhydride at high temperature can also corrode Silicon Dioxide SiO2 products. In view of this property, borate It can be used as a flux in ceramic firing. In addition, hydrogen fluoride can also be an acid that can dissolve Silicon Dioxide SiO2 products to generate hydrofluorosilicic acid that is easily soluble in water.