Description

Ethyl Silicate is a versatile organosilicon compound widely used as a cross-linking agent and a precursor for silica-based materials. Its primary value lies in its ability to form strong, inorganic networks upon hydrolysis, enhancing the durability and performance of coatings, binders, and composites. This product is essential for manufacturers in the foundry, coatings, and construction industries seeking to improve the thermal stability and chemical resistance of their products.

Application

• Foundry Binders: As a key component in inorganic binders for precision casting of ferrous and non-ferrous metals, providing excellent dimensional stability and shake-out properties.
• Protective Coatings: Used in zinc-rich primers and anti-corrosion coatings to form a silicate matrix that passivates metal surfaces.
• Concrete & Mortar Hardening: Acts as a densifier and water repellent for concrete, stone, and masonry, increasing surface hardness and reducing dusting.
• Catalyst & Catalyst Support: Serves as a silica source for synthesizing catalysts and creating porous catalyst supports.
• Fiberglass & Composite Materials: Utilized as a sizing or coupling agent to improve the adhesion between glass fibers and polymer matrices.
• Ceramic & Refractory Materials: Functions as a binder in ceramic molds and refractory shapes, enhancing green strength and final product integrity.

Basic Information

Product Name	Ethyl Silicate
CAS No.	11099-06-2
Molecular Formula	C8H20O4Si
Molecular Weight	208.33 g/mol
Synonyms	Tetraethyl Orthosilicate (TEOS); Ethyl Orthosilicate; Tetraethoxysilane; Silicon Ethoxide; Tetraethyl Silicate; Dynasil® A; Silbond® Condensed; Si(OEt)4
EINECS	234-324-0

Quality Control

Our Ethyl Silicate is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) for every shipment, detailing key parameters such as assay, specific gravity, and chloride content. Our quality system is designed to meet the rigorous demands of industrial applications, ensuring reliable performance in your formulations.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent contact with atmospheric moisture. Keep away from strong alkalis and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Specific Gravity (20°C)	0.93 - 0.94
Refractive Index (n20D)	1.382 - 1.384
Acidity (as HCl)	≤ 0.05%
Chloride Content	≤ 50 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.