Tetraethyl Orthosilicate TEOS Crosile®28
Chemical Properties
Crosile®28 is a blend of tetraethoxysilane and polyethoxysiloxane with a mass fraction of silica (SiO2) ranging from 28.8 - 29.5%. Soluble in solvents such as toluene, benzene, and ethanol. Crosile®28 is prepared by the reaction of silicon tetrachloride and ethanol.
Equivalent type
ethyl silicate 28, TEOS, ethyl silicate, tetraethyl orthosilicate, tetraethyl silicate, tetraethyl orthosilicate, tetraethoxysilane, silicic acid (H4SIO4), tetraethyl silicate Ester, Tetraethyl Silicate
Specifications
| Test Item |
Target Values(Spec, Limits) |
| 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 |
| Viscidity |
0.97 cps |
Application
Manufacture of paint and varnish coatings
Varnishes and paints with good adhesion to glass.
Components for preparing non-stick coatings.
As a binder component in heat-, chemical- and weather-resistant coatings, and in other fields that require water-insoluble, corrosion-resistant solid materials after hydrolysis, drying, or firing in alkaline media. High temperature resistance, non-corrosive.
Crosile®28 is used as a modifier additive in enamels (additive in paints). Forms a fast-drying, heat-resistant, water-repellent film with low shrinkage and stable gloss.
As a modifying additive for parquet paints and varnishes, it reduces preparation and drying times, while reducing natural oil consumption and improving the quality of the paint film.
Crosile®28 additive for urea-formaldehyde varnishes reduces varnish consumption and increases varnish activity by a factor of approximately 10 in mixtures with hardeners.
Used to rapidly increase the hardness of rosin varnishes on highly polymerized oils, glass varnishes, and alkyd resin solutions.
Polymer Additives
For film manufacturing, packaging - provides transparency, creating a "gas barrier" in food packaging (i.e., products in packaging produced with the Crosile@28 additive retain their freshness longer and extend shelf life).
Silicone rubber crosslinking agent.
Chemical Industry
Crosile®28 is the source of the highest quality amorphous silica (pure reactive silica) and high purity TEOS.
Organic synthesis reagents.
Dehydrator.
Ingeniería metalúrgica
Crosile®28 se utiliza en la industria de la fundición como materia prima para aglutinantes en la fabricación de moldes cerámicos (tecnología de fundición de inversión, fundición de moldes cerámicos).
Adhesivo para la fabricación de varillas expuestas a altas temperaturas.
Las piezas de carburo que son difíciles de estampar, laminar y forjar se fabrican con aditivos de silicato de etilo.
Fabricación de vidrio
El aditivo modificador Crosile®28 imparte un efecto hidrofóbico al vidrio, resistencia mecánica y química, dispersión de la luz.
Mejora la apariencia y protege las superficies de vidrio de la corrosión.
Composición de vidrio, espejo, limpiador de cristales.
La superficie tratada consigue un brillo estable, elimina fácilmente la suciedad y mejora la visibilidad.
