Product Overview Crosile® SI28 is a monomeric ethyl silicate, commonly known as tetraethyl orthosilicate (TEOS). Upon hydrolysis, it yields 28 wt.% silica, hence its designation as Ethyl Silicate-28. This product boasts the chemical formula Si(OC2H5)4. Chemical Information Item NO.: Crosile® SI 28 Chemical Name: Tetraethyl orthosilicate Chemical Formula: C8H20O4Si CAS No.: 78-10-4 EINECS No.: 201-083-8 Properties Colorless transparent liquid Soluble in various organic solvents including toluene, benzene, and ethanol Easily hydrolyzed Capable of condensation to form polysiloxanes Prone to polymerization in the presence of overheating, light, and peroxide Specifications Appearance: Colorless Transparent Liquid Chroma (APHA): <10 Content: >99.5% Specific gravity at 20°C: 0.929-0.936 Silicon dioxide content: 28% Acidity (as HCL): <0.001 Other content: 0-5ppm Viscosity: 0.97 cps Applications Paint and Varnish Coatings: Varnishes and paints with exceptional adhesion to glass Components for non-stick coatings As a binder component in heat-, chemical-, and weather-resistant coatings Forms a fast-drying, heat-resistant, water-repellent film with low shrinkage and stable gloss Polymer Additives: Enhances transparency and creates a "gas barrier" in food packaging, extending product freshness and shelf life Silicone rubber crosslinking agent Chemical Industry: Source of high-quality amorphous silica and high-purity TEOS Organic synthesis reagents Dehydrator Metallurgical Engineering: Used in the foundry industry as a raw material for binders in the manufacture of ceramic moulds Adhesive for high-temperature rods and carbide parts Glass Manufacturing: Imparts a hydrophobic effect, mechanical and chemical resistance, and light scattering to glass Improves appearance and protects glass surfaces from corrosion
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