Dichloromethylvinylsilane, bearing the CAS number 124-70-9, is a fascinating organosilicon compound whose unique chemical properties make it an indispensable building block in modern material science. For R&D scientists and product formulators, a deep understanding of its structure and reactivity is key to unlocking its full potential in various industrial applications.

Chemically, Dichloromethylvinylsilane is characterized by a silicon atom bonded to a methyl group, a vinyl group (CH=CH2), and two chlorine atoms. This structure imparts significant reactivity. The silicon-chlorine bonds are highly susceptible to hydrolysis, meaning the compound reacts readily with moisture, water, or protic solvents to release hydrochloric acid and form silanol (Si-OH) groups. This hydrolytic sensitivity is a cornerstone of its utility in forming siloxane bonds (Si-O-Si), which are the repeating units in silicone polymers. The vinyl group, on the other hand, provides a site for further functionalization or cross-linking reactions, enabling the creation of polymers with tailored properties.

The primary and most significant application of Dichloromethylvinylsilane is in the synthesis of silicone polymers. Through controlled hydrolysis and subsequent condensation, it contributes to the formation of polysiloxanes. The incorporation of the vinyl group allows for subsequent cross-linking reactions, leading to thermoset silicone elastomers or resins. These materials are prized for their thermal stability, flexibility over a wide temperature range, electrical insulation properties, and resistance to UV radiation and weathering. This makes them ideal for high-performance applications in the electronics, automotive, aerospace, and construction industries.

Beyond polymer synthesis, Dichloromethylvinylsilane also finds utility in the production of specialty chemicals. Its reactive nature allows it to be used as an intermediate in the synthesis of more complex organosilicon compounds. Furthermore, it can act as a coupling agent, particularly when incorporated into organic matrices or used in surface modification. In this role, it helps to bridge the interface between inorganic fillers (like glass fibers or minerals) and organic polymer matrices, leading to enhanced mechanical strength, improved adhesion, and better overall composite performance. This is a key area for material scientists and product developers looking to enhance composite properties.

The physical properties of Dichloromethylvinylsilane include its appearance as a colorless to light yellow liquid, with a relatively low flash point of around 4°C, indicating its flammability. Its boiling point is approximately 92-93°C, and it has a density of around 1.08 g/mL. Due to its reactivity with moisture, it must be stored under anhydrous conditions, typically under an inert atmosphere like nitrogen, to maintain its integrity and prevent degradation. Handling requires appropriate safety precautions due to its corrosive nature upon hydrolysis and its flammability.

For researchers and manufacturers, understanding these chemical and physical properties is crucial for effective utilization. Whether aiming to produce advanced sealants, durable coatings, or high-performance electronic components, Dichloromethylvinylsilane offers a versatile platform. For those looking to buy this essential chemical, sourcing from a reliable manufacturer ensures access to high-purity material that meets stringent industrial standards, enabling successful innovation and production.