Description

Triethoxychlorosilane is a versatile organosilicon compound primarily used as a key intermediate in the synthesis of functional silanes and silicone polymers. Its bifunctional nature, featuring both hydrolyzable ethoxy groups and a reactive chlorine atom, makes it a critical building block for creating tailored surface modifiers and coupling agents. This chemical is essential for manufacturers in the adhesives, sealants, coatings, and electronics industries seeking to enhance material compatibility, adhesion, and performance.

Application

• Silane Coupling Agent Precursor: Serves as a starting material for synthesizing specialty silane coupling agents used to improve the bond between organic polymers and inorganic surfaces like glass, minerals, and metals.
• Surface Treatment: Used to modify the surface properties of silica, fillers, and pigments to improve dispersion and compatibility in polymer matrices such as rubbers and plastics.
• Hydrophobic Coatings: A key intermediate in formulating water-repellent and protective coatings for construction materials, textiles, and electronic components.
• Adhesives & Sealants: Imparts improved adhesion and moisture resistance when incorporated into silicone-based adhesive and sealant formulations.
• Electronics & Semiconductor: Employed in the production of low-k dielectric materials and as a surface passivation agent in semiconductor manufacturing processes.
• Chemical Synthesis: Acts as a versatile reagent in organic synthesis for introducing the triethoxysilyl group into more complex molecules.

Basic Information

Product Name	Triethoxychlorosilane
CAS No.	4667-99-6
Molecular Formula	C6H15ClO3Si
Molecular Weight	198.72 g/mol
Synonyms	Chlorotriethoxysilane; Triethoxy(chloro)silane; Silane, chlorotriethoxy-; Triethoxysilyl chloride; Ethyl silicate chlorination product; NSC 9375; A 1524 (Union Carbide); Dynasylan® 6490 (Evonik)
EINECS	225-130-4

Quality Control

Our Triethoxychlorosilane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including gas chromatography (GC) for purity and identity confirmation, to ensure it meets precise specifications and consistent performance for industrial applications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee quality assurance and traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat and incompatible materials. Due to its moisture-sensitive (hygroscopic) nature, containers should be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent hydrolysis. Recommended storage temperature: 2-25°C.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Density (20°C)	1.07 - 1.09 g/cm³
Refractive Index (n20D)	1.395 - 1.405
Chloride Content	17.5 - 18.5%

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