The demand for silicon tetrafluoride continues to grow and my country’s production capacity of electronic grade products is weak

Silicon tetrafluoride, the molecular formula is SiF4, appears as a colorless gas under normal pressure, can be liquefied under pressure, has a pungent odor, is toxic, corrosive, non-flammable, and is soluble in ethanol, nitric acid, and hydrofluoric acid. etc., insoluble in ether. Silicon tetrafluoride is highly hygroscopic, easy to deliquesce, and can decompose in humid air. The decomposition products are silicic acid and hydrogen fluoride, which will slowly hydrolyze when exposed to water. The hydrolysis products are silicic acid and hydrofluoric acid. Silicic acid and hydrofluoric acid are weak acids. , but hydrofluoric acid can react with unhydrolyzed silicon tetrafluoride to form fluorosilicic acid, which is a strong acid.

According to the “In-depth Market Research and Investment Strategy Suggestions Report on Silicon Tetrafluoride Industry 2021-2025” released by the Industrial Research Center, In the chemical industry, silicon tetrafluoride can be used as a raw material for the synthesis of organosilicon compounds, and can be used to produce products such as fluorosilicic acid, aluminum fluoride, and lead fluoride; in the field of building materials, silicon tetrafluoride can be used to harden artificial marble. agent, cement hardener; in the field of optical communications, silicon tetrafluoride can be used to make high-purity quartz glass for optical fiber production; in the fields of semiconductors and integrated circuits, high-purity silicon tetrafluoride can be used in plasma etching, silicon Epitaxial growth, amorphous silicon film generation, chemical vapor deposition, etc.; in addition, silicon tetrafluoride can also be used as a chemical analysis reagent.

The scale of my country’s semiconductor and integrated circuit industries is expanding rapidly, and the market demand for electronic-grade high-purity silicon tetrafluoride is growing; my country’s photovoltaic industry is developing rapidly, and the demand for high-purity silicon tetrafluoride in the solar cell manufacturing field is rising rapidly. Overall, my country’s silicon tetrafluoride market has strong demand. Driven by demand, my country’s silicon tetrafluoride production companies continue to increase and production capabilities continue to increase. However, there is still a gap compared with foreign companies in the production of electronic grade products, and demand is highly dependent on foreign countries.

In overseas markets, silicon tetrafluoride manufacturers mainly include United Chemical, Praxair, Air Products, Chemours, 3M, Solvay of Belgium, Arkema of France, Showa Denko of Japan, and Kanto Electric of Japan. Chemicals, Japan’s Mitsui Chemicals, Japan’s Chuo Glass, Japan’s Asahi Glass, etc., there are a large number of American and Japanese companies. Among them, these companies are powerful, and most of them, such as United Chemical of the United States and Showa Denko of Japan, have the production capacity of electronic-grade high-purity silicon tetrafluoride.

The main silicon tetrafluoride production enterprises in my country include Guangdong Huate Gas Co., Ltd., Beijing Huake Weineng Chemical Co., Ltd., Guangzhou Puyuan Gas Co., Ltd., etc. Industry analysts said that after continuous development, my country now has companies that can produce electronic-grade high-purity silicon tetrafluoride. In 2017, Luling Electronic Materials (Tianjin) Co., Ltd. successfully put into production 300 tons/year of high-purity electronic grade silicon tetrafluoride; at the end of 2020, Zhejiang Zhongning Silicon Industry Co., Ltd. produced 300 tons/year of high-purity silicon tetrafluoride for integrated circuits. The gas project has entered the final stage of research and finishing. However, overall, my country’s supply capacity of electronic-grade high-purity silicon tetrafluoride is still insufficient, and there is still much room for improvement in the future.