Chemical properties folded relatively chemically stable. Insoluble in water nor react with water. Acidic oxides, not with the general acid. Gaseous hydrogen fluoride is reacted with silica to form gaseous silicon tetrafluoride. Concentrated alkali solution with hot or molten alkali silicate and water reaction. With more metal oxides at high temperature produced by the reaction of silicate. For the manufacture of quartz glass, optical instruments, chemical containers, ordinary glass, refractories, ultrafine silica fiber Which is good reputation, and ceramics. The inert nature of the silica, it does not fluorine, halogen other than hydrogen fluoride, hydrogen halides and sulfuric acid, nitric acid, perchloric action (except hot concentrated phosphoric acid). Common concentrated phosphoric acid (or pyrophosphate) at high temperature corrosion of silica ultrafine silica can generate heteropolyacids [2] Which high volume of ultrafine silica, fused borate or boron at high temperatures anhydride also corrosion silica, in view of this nature, borate can be used in the firing of ceramic flux, in addition to hydrogen fluoride can be dissolved silica acid, soluble in water to generate fluorosilicone Acid: SiO + 4HF = SiF4 ↑ + 2H O Wu of rock on the sea mostly cristobalite silica minerals, the volume fraction of up to 5% of ultrafine silica companies, almost no quartz mineral, only?? only the presence of a small amount of finely crystalline quartz minerals mare basalts, which has a typical two-cristobalite crystal structure shows: the lava cooling process, cristobalite from high to low temperature conditions for the formation of both. Which ultrafine silica high-volume, ultra-fine silica, Weifang Fuyuan provided by Weifang Fuyuan Environmental Technology Limited. Weifang Fuyuan Environmental Protection Technology Co., Ltd. (www.wfdafuyuan.com) (www.wfdafuyuan.com) strong, credible, Shandong Weifang other industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Weifang Fuyuan and you hand into the brilliant, for a better future!