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Dimethyldimethoxysilane
| Chemical name | Dimethyldimethoxysilane |
| Brand number | MM-22 |
| Product Name | Two Jia, two Jia |
| Quality indicators | Purity≥ 99.50%, methanol≤ 0.5%, chloride ion≤ 30ppm |
| Packaging specification/kg | 20. 170 |
| Molecular weight | 120.22 |
| Boiling point | 81~82 |
| Density | 0.870~0.875 |
| Refractive index | 1.3680~1.3700 |
| Appearance and risk | Colorless transparent liquid;Flammable liquid |
| Product application | Preparation of silofunctional silane, polysiloxane, etc., used in white carbon black treatment agent. |
Dimethyldimethoxysilane: The Versatile Molecular Bridge in Modern Industry
In the vast and complex world of organosilicon chemistry, few compounds are as fundamentally versatile yet understated as dimethyldimethoxysilane. With the simple chemical formula (CH₃)₂Si(OCH₃)₂, this colorless, flammable liquid serves as a critical molecular building block, a silent enabler whose properties are harnessed across a stunning array of industries, from construction and automotive to electronics and personal care.
At its core, the molecule's utility stems from its unique hybrid structure. It features a central silicon atom, a cornerstone of inorganic chemistry, bonded to two organic methyl groups (CH₃-) and two hydrolytically sensitive methoxy groups (-OCH₃). This duality is the source of its power. The silicon-oxygen bonds are prone to hydrolysis—reacting with water—while the silicon-carbon bonds are remarkably stable. This allows dimethyldimethoxysilane to act as a sophisticated molecular bridge. It can react with inorganic surfaces (like glass, minerals, or metals) through its hydrolyzable methoxy groups, while its stable organic methyl groups project outwards, modifying the surface properties entirely.
This bridging capability is most prominently exploited in the realm of silicones and resins. Dimethyldimethoxysilane is a key monomer used in the production of silicone polymers. Through controlled hydrolysis and condensation reactions, it can be co-polymerized with other silanes to create a vast family of materials, including flexible silicone elastomers, rigid resins, and tailored fluids. Its specific role is often to introduce the fundamental “D” (dimethyl) unit into the polymer backbone, contributing to flexibility, water repellency, and low surface energy in the final product.
In conclusion, dimethyldimethoxysilane is a testament to the elegance of functional molecular design. Its unassuming structure belies a reactive intelligence, allowing it to seamlessly connect the organic and inorganic worlds. By providing a durable, water-repellent, and stable interface, this compound quietly underpins the longevity of our infrastructure, the performance of high-tech materials, and the innovation driving modern manufacturing, proving itself to be an indispensable workhorse of industrial chemistry.
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