Description

Ethyltriethoxysilane is a versatile organosilicon compound widely used as a coupling agent and surface modifier. Its primary value lies in its ability to form stable bonds between inorganic materials and organic polymers, enhancing composite performance. This chemical is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producing advanced silica-based materials.

Application

• As a key coupling agent in mineral-filled composites (e.g., fiberglass, minerals in plastics) to improve mechanical strength and moisture resistance.
• As a surface treatment agent for glass, silica, and other inorganic fillers to enhance dispersion and adhesion in polymer matrices.
• In the formulation of moisture-curable silicone sealants and adhesives, where it acts as a crosslinker and adhesion promoter.
• As a precursor in sol-gel processes for manufacturing hybrid organic-inorganic coatings with improved hardness, corrosion resistance, and weatherability.
• In the synthesis of modified silica nanoparticles and mesoporous materials for catalytic, drug delivery, or sensor applications.
• As an intermediate for further chemical synthesis of more complex organosilane derivatives.

Basic Information

Product Name	Ethyltriethoxysilane
CAS No.	78-07-9
Molecular Formula	C8H20O3Si
Molecular Weight	192.33 g/mol
Synonyms	Triethoxy(ethyl)silane; Ethyltriethoxysilane; ETES; Ethylsilanetriol triethyl ether; Silane, triethoxyethyl-; Ethyltriethoxysilicon; NSC 66116; Triethoxyethylsilane
EINECS	201-081-7

Quality Control

Our Ethyltriethoxysilane is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including gas chromatography (GC) for purity and identity confirmation, to ensure it meets precise specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can lead to hydrolysis and product degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0 %
Refractive Index (n20/D)	1.395 - 1.400
Density (20°C)	0.90 - 0.92 g/mL
Water Content (Karl Fischer)	≤ 0.1 %

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