Vinyltrihydroxysilane (CAS 143-48-6) is a fascinating organosilicon compound whose unique structure dictates its extensive applications across various industries. Understanding its chemical properties and synthesis pathways is key for scientists, researchers, and procurement specialists to leverage its full potential. NINGBO INNO PHARMCHEM CO.,LTD., as a dedicated manufacturer, is committed to delivering this compound with optimal characteristics.

Chemical Structure and Properties

The molecular formula of Vinyltrihydroxysilane is C2H6O3Si. Its structure features a silicon atom bonded to one vinyl group (-CH=CH2) and three hydroxyl groups (-OH). This combination is crucial:

• Vinyl Group: This unsaturated organic functional group provides reactivity for polymerization and addition reactions, making it suitable for incorporation into organic polymer chains or for cross-linking.
• Hydroxyl Groups: These groups are reactive and can undergo condensation reactions, particularly with other silanols or with hydroxyl-containing surfaces. This is fundamental to its function as a coupling agent, allowing it to bond to inorganic substrates. The Si-OH bonds are also prone to hydrolysis in the presence of water.

Physically, Vinyltrihydroxysilane is typically handled as a solution or carefully managed due to the reactivity of the hydroxyl groups. While direct physical appearance data for the pure anhydrous form is often not readily available in public datasheets due to its tendency to react, solutions or hydrated forms can exhibit varying characteristics. However, its derived products and applications highlight its stability under specific conditions.

Synthesis of Vinyltrihydroxysilane

The synthesis of Vinyltrihydroxysilane primarily involves the hydrolysis of vinylalkoxysilanes. The most common precursor is vinyltriethoxysilane. The general reaction is as follows:

CH2=CH-Si(OR)3 + 3 H2O → CH2=CH-Si(OH)3 + 3 ROH

Where 'R' typically represents an alkyl group, most commonly ethyl (C2H5). The hydrolysis reaction involves the cleavage of the Si-OR bonds by water, replacing the alkoxy groups with hydroxyl groups. This reaction is often catalyzed by acids or bases. The resulting Vinyltrihydroxysilane is a silanetriol. Due to the high reactivity of the Si-OH bonds, Vinyltrihydroxysilane can readily undergo self-condensation (siloxane formation) or react with hydroxyl groups on surfaces.

Challenges in Handling and Production

Producing and handling Vinyltrihydroxysilane requires careful control:

• Hydrolysis Sensitivity: Exposure to moisture can lead to unwanted hydrolysis and condensation, altering the product's intended structure and reactivity.
• Condensation: The Si-OH groups can condense to form siloxane (Si-O-Si) bonds, leading to oligomers or polymers. This is often a desired outcome in applications like coatings or binders but needs to be managed during synthesis and storage of the monomer.
• Purity: Achieving high purity is critical, especially for pharmaceutical intermediate applications. This requires rigorous control over reaction conditions and purification steps.

At NINGBO INNO PHARMCHEM CO.,LTD., our manufacturing processes are optimized to manage these factors, ensuring that we produce Vinyltrihydroxysilane (CAS 143-48-6) of the highest quality. We employ advanced synthesis techniques and quality control measures to deliver a product that meets the exacting standards of our clients in the pharmaceutical and chemical industries. If you are looking to buy this compound or learn more about its properties, our team is ready to provide expert assistance.