physical property
Diphenyldichlorosilane is a colorless liquid under normal pressure, with a pungent odor. It is soluble in most organic solvents, such as tetrahydrofuran, benzene, dichloromethane, etc. Its density is higher than water, with a relative density of 1.19. When it comes into contact with water, it undergoes a violent hydrolysis reaction, releasing irritating hydrogen chloride. In addition, Diphenyldichlorosilane is flammable in the air, so it should be stored in a cool and dry place. Diphenyldichlorosilane often contains impurities such as chlorobenzene, phenyltrichlorosilane, and biphenyl, which can be detected by capillary gas chromatography.
application
The main purpose is to prepare diphenyldimethoxysilane. Diphenyldimethoxysilane, prepared from diphenyldichlorosilane and methanol, forms a polymer molecule that contains hydrophobic moieties and permeable Si-0-Si chains. Therefore, it has surface activity and weather resistance, and can be used as an additive in the paint industry. For example, coatings containing 45% diphenyldimethoxysilane have excellent waterproof performance, which can reduce the moisture absorption, anti adhesion, and electromagnetic properties of coatings. They are widely used in various fields such as national defense, aerospace, and construction. The introduction of diphenyldimethoxysilane as an anti crosslinking agent into silicone rubber can effectively prevent rubber from vulcanizing, and adding a certain amount of diphenyldimethoxysilane during its storage process can prevent rubber from hardening. In addition, diphenyldimethoxysilane has broad application markets in cement, paint, lubrication, television screen film, photocopying, image sensing, and liquid crystal display. [2]