Tetraethyl silicate

Tetraethyl silicate (CAS 78-10-4 ), commonly known as TEOS or ethyl silicate, is a silicon alkoxide used as a reactive binder, crosslinker, and silica precursor across industrial and specialty chemical applications. On hydrolysis, it deposits amorphous silica, enabling durable surface treatments, protective coatings, and ceramic structures without requiring high-temperature sintering. In zinc-rich and inorganic coatings, it acts as the silicate binder. This material cures at ambient temperature to form hard, corrosion-resistant films on steel structures and industrial equipment. Semiconductor and display manufacturers use it as a CVD/sol-gel precursor to deposit silicon dioxide dielectric layers. In building and construction, it consolidates porous stone, concrete, and masonry by penetrating the substrate. It forms a silica network that restores structural integrity and protects against environmental degradation over time. Formulators of heat-resistant adhesives and sealants incorporate it as a crosslinking agent to improve thermal stability. This enhances adhesion to glass and metal surfaces in demanding industrial environments and high-heat applications. Tetraethyl silicate is supplied as a clear liquid, available in both pure form and as partially pre-hydrolyzed grades. Most notably, Ethyl Silicate 40 offers higher silica content for specialized coating applications. Standard purity grades range from technical to high-purity electronic grade for semiconductor use. Packaging typically covers drums, IBCs, and bulk tanker quantities to meet various industrial supply chain requirements. Contact us for supply of Tetraethyl silicate Request Quote

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