Divinyldimethylsilane, a remarkable organosilicon compound, has captured the attention of various industries due to its unique physical properties. As a leading supplier of Divinyldimethylsilane, I am delighted to share in - depth knowledge about its physical characteristics with you.
Molecular Structure and Basic Information
Divinyldimethylsilane has the chemical formula C₆H₁₂Si. Its molecular structure consists of a silicon atom at the center, bonded to two methyl groups (-CH₃) and two vinyl groups (-CH = CH₂). This specific arrangement of atoms gives rise to its distinct physical and chemical properties.
Physical State at Room Temperature
At standard room temperature (around 25°C) and atmospheric pressure, Divinyldimethylsilane exists as a colorless, clear liquid. This liquid state makes it relatively easy to handle and transport compared to solid substances. It can be readily poured, pumped, and mixed with other compatible substances, which is highly advantageous in industrial applications.
Boiling Point and Melting Point
The boiling point of Divinyldimethylsilane is approximately 104 - 105°C. This relatively low boiling point indicates that it can be vaporized at moderately elevated temperatures. The low boiling point is beneficial in processes such as distillation and vapor - phase reactions. For example, in some chemical synthesis procedures where the compound needs to be in the gaseous state to react with other reagents, the low boiling point allows for easy conversion from the liquid to the vapor phase.
On the other hand, its melting point is around - 97°C. The extremely low melting point means that Divinyldimethylsilane remains in a liquid state over a wide range of temperatures, which is useful in applications where a liquid - phase operation is required under various environmental conditions.
Density
The density of Divinyldimethylsilane is about 0.76 g/cm³ at 25°C. This relatively low density is a characteristic feature of many organosilicon compounds. The low density can be advantageous in applications where weight reduction is a key factor. For instance, in the aerospace industry, materials with low density are often preferred to reduce the overall weight of the aircraft, and Divinyldimethylsilane can be a component in some lightweight composite materials.
Solubility
Divinyldimethylsilane is soluble in many common organic solvents such as toluene, hexane, and ether. This solubility property makes it easy to incorporate into organic - based formulations. It can be mixed with other organic compounds to form homogeneous solutions, which is crucial in processes like coating and adhesive manufacturing. However, it is insoluble in water. The immiscibility with water is due to its non - polar nature. The presence of the non - polar methyl and vinyl groups on the silicon atom makes the molecule hydrophobic. This property can be exploited in applications where water - repellent characteristics are desired, such as in waterproof coatings.
Viscosity
The viscosity of Divinyldimethylsilane is relatively low. Low - viscosity fluids have good flow properties, which are essential in applications such as injection molding and fluid - based transfer processes. In injection molding, a low - viscosity material can easily fill the mold cavities, resulting in precise and detailed molded products.
Refractive Index
The refractive index of Divinyldimethylsilane is around 1.423 at 20°C. The refractive index is a measure of how much light is bent when it passes through a substance. This property is important in optical applications. Although Divinyldimethylsilane may not be a primary optical material on its own, it can be used as an additive in optical polymers to modify their refractive index and other optical properties.
Flash Point
The flash point of Divinyldimethylsilane is approximately 11°C. The flash point is the lowest temperature at which a substance can form an ignitable mixture with air near its surface. A relatively low flash point indicates that Divinyldimethylsilane is flammable and requires careful handling and storage. Special precautions need to be taken in industrial settings to prevent fire hazards, such as storing it in well - ventilated areas away from sources of ignition.
Applications Based on Physical Properties
The unique physical properties of Divinyldimethylsilane make it suitable for a wide range of applications. In the field of polymer synthesis, its low boiling point and good solubility in organic solvents allow it to be easily incorporated into polymer matrices. It can act as a cross - linking agent or a monomer in the production of silicone - based polymers. These polymers often have excellent thermal stability, chemical resistance, and mechanical properties.
In the electronics industry, the low viscosity and good flow properties of Divinyldimethylsilane make it useful in the encapsulation of electronic components. It can be used to fill the gaps between electronic parts, providing protection against moisture, dust, and mechanical shock.
The water - repellent property of Divinyldimethylsilane also makes it a valuable ingredient in waterproof coatings for various substrates, including metals, plastics, and glass.
Comparison with Related Compounds
When comparing Divinyldimethylsilane with other related organosilicon compounds such as Octamethylcyclotetrasilazane, Methyl Hydrogen Silicone Fluid, and Trimethyltrivinylcyclotrisilazane, we can see some differences in their physical properties.
Octamethylcyclotetrasilazane is a cyclic compound with a different molecular structure compared to Divinyldimethylsilane. It has a higher boiling point and is more reactive in some chemical reactions due to the presence of the silazane bonds. Methyl Hydrogen Silicone Fluid has a different functional group (Si - H bonds) compared to the vinyl groups in Divinyldimethylsilane. This difference in functional groups leads to different chemical reactivities and physical properties such as viscosity and surface tension. Trimethyltrivinylcyclotrisilazane, with its cyclic structure and multiple vinyl groups, also has distinct physical and chemical characteristics compared to Divinyldimethylsilane.
Quality Control in Supply
As a supplier of Divinyldimethylsilane, we understand the importance of maintaining the highest quality standards. We conduct rigorous quality control tests on every batch of our product. These tests include measuring the physical properties such as boiling point, density, and refractive index to ensure that they meet the specified values. We also analyze the chemical purity of the product to ensure that it is free from impurities that could affect its performance in various applications.
Conclusion
In conclusion, Divinyldimethylsilane is a fascinating organosilicon compound with a set of unique physical properties. Its low boiling point, low density, good solubility in organic solvents, and other characteristics make it suitable for a wide range of industrial applications. Whether you are in the polymer synthesis, electronics, or coating industry, Divinyldimethylsilane can offer solutions to your specific needs.
If you are interested in learning more about Divinyldimethylsilane or would like to discuss potential applications and place an order, please feel free to contact us. We are committed to providing you with high - quality products and excellent customer service.
References
- "Organosilicon Chemistry: From Molecules to Materials" by Norbert Auner and Joachim Weis.
- "Silicones and Silicone - Modified Materials" by Clive L. Lee and A. Lee Smith.
- Journal articles on organosilicon compounds published in "Journal of Organometallic Chemistry" and "Organometallics".