Description

Triethyl Methoxysilane is a versatile organosilicon compound with the CAS registry number 2117-34-2. This chemical serves as a crucial intermediate and coupling agent, valued for its ability to modify surfaces and impart specific functional properties in advanced materials. It is essential for manufacturers and R&D teams in the silicone polymers, coatings, adhesives, and electronics sectors seeking to enhance product performance and durability.

Application

• Silicone Resin & Polymer Modification: Acts as a cross-linking agent and chain terminator in the synthesis of silicone elastomers and resins, improving thermal stability and mechanical properties.
• Surface Treatment & Coupling Agent: Used to functionalize inorganic surfaces like glass, silica, and metals, promoting adhesion between organic polymers and inorganic substrates in composite materials.
• Water Repellents & Protective Coatings: A key ingredient in formulations for creating hydrophobic and oleophobic coatings on construction materials, textiles, and optical components.
• Electronics & Semiconductor Industry: Employed as a precursor in chemical vapor deposition (CVD) processes for depositing silicon-containing thin films and dielectric layers.
• Adhesives & Sealants: Enhances the moisture resistance and bonding strength of silicone-based adhesives and sealants.
• Pharmaceutical & Agro-chemical Intermediates: Serves as a building block in the synthesis of more complex organosilicon molecules for specialized applications.

Basic Information

Product Name	Triethyl Methoxysilane
CAS No.	2117-34-2
Molecular Formula	C7H18OSi
Molecular Weight	146.30 g/mol
Synonyms	Methoxytriethylsilane; Triethylsilyl methyl ether; Ethyltriethoxysilane (common misnomer, verify context); Silane, methoxytriethyl-; Triethylmethoxysilane; (Triethylsilyl)methanol, methyl ether; TES-OMe; NSC 66195
EINECS	218-315-6

Quality Control

Our Triethyl Methoxysilane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including GC, NMR, and Karl Fischer titration, to ensure it meets precise purity and consistency standards. A Certificate of Analysis (COA) detailing specific results for identity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent degradation from atmospheric moisture and oxygen.

Specification

Item	Specification
Appearance	Colorless clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Water Content (Karl Fischer)	≤ 0.1%
Refractive Index (n20D)	1.395 - 1.405
Density (20°C)	0.82 - 0.86 g/mL

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