Description

Tris(Dimethylsiloxy)Ethoxysilane is a specialized organosilicon compound with a unique branched structure, serving as a versatile building block and surface modifier. Its value lies in its ability to introduce both hydrolyzable ethoxy groups and stable dimethylsiloxy functionalities, enabling controlled reactivity and enhanced compatibility in various matrices. This product is essential for manufacturers in the silicone polymers, advanced materials, and specialty coatings sectors seeking to fine-tune material properties such as hydrophobicity, adhesion, and crosslink density.

Application

• Silicone Resin & Polymer Modification: Used as a crosslinking agent or chain extender to impart specific rheological and mechanical properties.
• Surface Treatment & Coupling Agent: Enhances adhesion between organic polymers and inorganic substrates like glass, metals, or minerals.
• Hydrophobic Coatings: A key precursor for formulating water-repellent and anti-corrosion surface treatments.
• Synthesis Intermediate: Serves as a valuable starting material for the synthesis of more complex, functionalized silanes and silicone-based dendrimers.
• Release Coatings: Contributes to the formulation of non-stick and easy-release coatings for industrial and packaging applications.
• Sealants & Adhesives: Improves flexibility, durability, and environmental resistance in high-performance sealant and adhesive formulations.

Basic Information

Product Name	Tris(Dimethylsiloxy)Ethoxysilane
CAS No.	865811-55-8
Molecular Formula	C8H24O4Si4
Molecular Weight	296.62 g/mol
Synonyms	Ethoxy[tris(dimethylsiloxy)]silane; Tris(dimethylsiloxy)ethoxy Silane; Ethoxytris(dimethylsiloxy)silane; Silane, ethoxy[tris(dimethylsiloxy)]-; (Ethoxy)tris(dimethylsiloxy)silane; Tris-O,O',O''-(dimethylsilyl) ethoxysilane; A 1230 (potential trade name analog); Tris(trimethylsiloxy)ethoxysilane analog (common class name)
EINECS	Contact for details

Quality Control

Our Tris(Dimethylsiloxy)Ethoxysilane is manufactured under stringent quality management systems. Each batch undergoes rigorous analytical testing, including assay by GC or NMR and impurity profiling, to ensure consistency and high purity suitable for industrial and R&D applications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and specific properties is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen or argon) after opening to prevent moisture absorption and degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.3850 - 1.3950
Density (g/mL, 20°C)	0.90 - 0.95
Water Content (KF)	≤ 0.1%

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