Vinyldimethylchlorosilane (CAS 1719-58-0) is a fundamental organosilicon compound that underpins many advancements in material science. Its unique chemical structure and reactivity make it a sought-after component for both academic research and industrial applications. Understanding its synthesis and chemical properties is crucial for scientists and engineers working with silicon-based materials.

Chemically, Vinyldimethylchlorosilane is characterized by the formula C4H9ClSi and a molecular weight of 120.65. It typically presents as a clear to straw-colored liquid with a relatively low boiling point, around 82-83°C. Its refractive index is approximately 1.414. A key feature is its sensitivity to moisture; it reacts readily with water and other protic solvents, a property that dictates its handling and storage requirements. The presence of the Si-Cl bond makes it a highly reactive species, ideal for nucleophilic substitution reactions and the formation of new Si-C or Si-O bonds.

The synthesis of Vinyldimethylchlorosilane often involves the reaction of dimethylchlorosilane with vinyl chloride or similar vinylating agents. Industrial production methods are optimized for yield and purity, ensuring that the final product meets stringent specifications. For example, a common approach involves the reaction of silicon tetrachloride or other chlorosilanes with vinyl compounds under specific catalytic conditions.

The primary utility of Vinyldimethylchlorosilane stems from its ability to act as a monomer in the production of silicone polymers. When polymerized, it forms chains that can be further modified or cross-linked to create materials with a broad range of physical and chemical properties. These include:

  • Silicone Oils: Used as lubricants, hydraulic fluids, and heat transfer media due to their thermal stability and low volatility.
  • Silicone Greases: Employed as sealants and high-temperature lubricants, offering excellent resistance to oxidation and water.
  • Silicone Rubbers: Known for their elasticity, flexibility, and resistance to extreme temperatures and weathering, vital for seals, gaskets, and medical implants.

Beyond polymers, Vinyldimethylchlorosilane also functions as an important intermediate in the synthesis of more complex organosilicon compounds. Researchers and chemists utilize it to introduce specific functionalities or to build larger molecular structures. This versatility makes it an invaluable tool in the development of novel materials for electronics, coatings, and biomedical applications.

For companies looking to buy Vinyldimethylchlorosilane, identifying reliable manufacturers and suppliers is critical. Sourcing from reputable chemical suppliers in China can provide access to high-purity material at competitive prices. A thorough review of product specifications and the availability of technical support are essential steps in the procurement process. Whether for R&D purposes or large-scale manufacturing, understanding the chemistry of Vinyldimethylchlorosilane ensures its effective application in driving material innovation.