Tetraethyl Orthosilicate (TEOS) | Manta TEOS

Manta TEOS is tetraethyl orthosilicate (CAS 78-10-4, ≥99% assay, total chlorine below 0.5 ppm) used as a silica binder and precursor in precision investment casting, sol-gel coatings and stone consolidation. Complete hydrolysis yields approximately 28.8% SiO2 while releasing ethanol, and it is comparable to Momentive Silbond Pure, Evonik Dynasylan A and Wacker TES 28.

Manta TEOS is a clear, colorless liquid that serves as a versatile source of silicon dioxide (SiO2). It is the most widely used silane precursor in the world, utilized for its ability to undergo controlled hydrolysis and condensation to form a durable inorganic silica network.

Manta TEOS is favored for its balanced reactivity and environmental safety (releasing ethanol upon hydrolysis). It is an essential binder and intermediate in precision casting, advanced coatings, and high-performance construction materials.

Performance equivalent to industry standards: Momentive Silbond Pure, Evonik Dynasylan A, Wacker TES 28.

Features

• Controlled Silica Deposition: Yields approximately 28.8% silica (SiO2) upon complete hydrolysis, forming a hard, heat-resistant, and chemical-resistant binder.
• Superior Binder for Investment Casting: Provides exceptional thermal stability and surface finish for precision molds.
• Hydrophobicity & Strengthening: Deeply penetrates porous substrates like natural stone to increase structural integrity and weather resistance.
• High-Purity Precursor: Ideal for the synthesis of ultra-fine powders and high-performance sol-gel coatings.

1. Precision Investment Casting

Manta TEOS is a primary binder for refractory fillers (such as zircon or silica) used in the manufacture of precision casting molds. It provides high thermal stability, excellent dimensional accuracy, and a superior surface finish for high-end metal parts.

2. Sol-Gel Process & High-Performance Coatings

Acts as the central starting material for the sol-gel production of glass-like coatings. It is used to manufacture chemical-resistant and heat-resistant finishes for metals, glass, and polymers, and is a key component in anti-scratch and anti-reflective optical treatments.

3. Construction & Stone Consolidation

Applied to natural stones, masonry, and historic monuments, Manta TEOS reacts with moisture to form a silica-gel binder (SiO2) within the pores. This significantly increases the substrate strength and provides a breathable, hydrophobic barrier against environmental degradation.

4. Manufacture of Fluorescent & Fine Powders

Upon complete hydrolysis, Manta TEOS generates high-purity, nano-sized silicon oxide powders, which are essential precursors for making fluorescent powders (phosphors) used in LED and display technologies.

5. Resin Modification & Crosslinking

Used in the polymerization of silicone resins for paints and surface modifiers. It improves the thermal stability and mechanical performance of other organic resins (like epoxies or polyurethanes) by introducing inorganic siloxane structures.

6. Chemical Intermediate

Serves as the raw material for the production of specialized silicon macromolecular compounds and organofunctional silanes.