What Is Silicon Tetrachloride SiCl4
On silicon tetrachloride SiCl
Silicon tetrachloride is also a chemical substance. It is a colorless and clear liquid with a pungent smell and can smoke in the air.
Its composition is composed of a silicon atom and a tetrachlorine atom connected by a covalent bond. Silicon belongs to the fourteenth group in the periodic table of elements, and its outer layer has four electrons, chlorine belongs to the seventeenth group, and the outer layer has seven electrons. The four electrons of silicon pair with each electron of the tetrachloride atom to form a bond, thus forming the structure of SiCl.
In terms of its properties, the boiling point is low, about 57.6 ° C, due to the weak intermolecular forces. Its chemical properties are active, and it reacts violently in contact with water to form silicic acid and hydrogen chloride. The equation of the reaction is: SiCl+ 4H2O O = HSiO+ 4HCl. The intensity of this reaction is due to the fact that the silicon-chlorine bond is easily destroyed by water molecules, the chlorine atom is combined with hydroxide, and the silicon and hydroxyl groups are combined to form the above products.
For industrial purposes, silicon tetrachloride is quite important. It is often used as a raw material for the preparation of high-purity silicon. In the modified Siemens method, silicon tetrachloride can be converted into high-purity silicon through a series of reactions. This high-purity silicon is the cornerstone of the semiconductor industry and is used in the manufacture of various chips, integrated circuits, etc., which is related to the development of electronic technology. It can also be used as a raw material for the manufacture of optical fiber preforms. After complex processes, the optical fiber preforms are drawn into optical fibers, which are widely used in the field of communication and enable high-speed transmission of information.
Therefore, although silicon tetrachloride is a chemical substance, it plays a key role in the development of industry and science and technology, and has far-reaching influence.
