Understanding the chemical structure and properties of key intermediates is crucial for their effective utilization in industrial applications. 1,1,3,3-Tetramethyldisiloxane (CAS 3277-26-7) is a notable organosilicon compound with a unique molecular arrangement that dictates its reactivity and broad applicability. As a premier manufacturer of specialty chemicals, we are committed to providing insights into the chemistry behind our high-quality products.

At its core, 1,1,3,3-Tetramethyldisiloxane is a disiloxane, meaning it contains a silicon-oxygen-silicon (Si-O-Si) backbone. The molecule features four methyl groups attached to the silicon atoms, and importantly, two hydrogen atoms directly bonded to the silicon atoms (Si-H). This specific arrangement, represented by the molecular formula C4H14OSi2, gives it the chemical name Tetramethyldisiloxane. The presence of these Si-H bonds is critical for its reactivity as a chain extender, crosslinking agent, and reducing agent.

The synthesis of 1,1,3,3-Tetramethyldisiloxane typically involves controlled hydrolysis and condensation reactions of suitable chlorosilanes. For instance, the reaction of dimethyldichlorosilane with water under specific conditions can yield siloxane linkages. The precise control over reaction parameters is essential to achieve the desired linear structure with hydrogen termination, ensuring high purity and yield. Our manufacturing processes are optimized to produce 1,1,3,3-Tetramethyldisiloxane with a purity exceeding 99%.

Key physical and chemical properties include its appearance as a colorless, transparent liquid with a relatively low boiling point of approximately 70°C. Its flash point of -12°C indicates it is a flammable substance, requiring appropriate handling and storage. The density is around 0.757 g/cm³, and its refractive index is approximately 1.3669. These properties are vital for chemists and engineers when designing reaction conditions, formulating products, or ensuring safe storage and transportation.

The industrial significance of 1,1,3,3-Tetramethyldisiloxane stems directly from its chemical structure. The reactive Si-H groups enable it to participate in hydrosilylation reactions, a cornerstone of silicone chemistry. This allows it to be used as a chain extender or crosslinker in silicone rubber, providing elasticity and durability. Furthermore, its ability to be functionalized with various reactive groups makes it an excellent intermediate for creating siloxane polymers that can modify organic polymers, thereby enhancing properties like thermal stability and flexibility.

For those in need of this versatile compound, sourcing from a reputable manufacturer is key. We offer 1,1,3,3-Tetramethyldisiloxane at competitive prices and ensure consistent quality. Whether you are involved in silicone manufacturing, polymer modification, or organic synthesis, our product is designed to meet your rigorous demands. We encourage you to contact us to learn more about its applications and to request a quotation for your bulk requirements.