Description

4,4,15,15-Tetraethoxy-9,10-Bis[3-(Triethoxysilyl)Propoxy]-3,8,11,16-Tetraoxa-4,15-Disilaoctadecane is a high-purity, multi-functional organosilane crosslinker and adhesion promoter. This compound is engineered to deliver superior performance in demanding applications where strong interfacial bonding and network formation are critical. It is essential for manufacturers in the advanced materials, coatings, and electronics industries seeking to enhance product durability and functionality.

Application

• Crosslinking Agent for Silicone Polymers: Used to create high-performance, thermally stable silicone resins and elastomers with improved mechanical properties.
• Surface Modification and Coupling Agent: Enhances adhesion between inorganic substrates (glass, metals, minerals) and organic polymers in composite materials, sealants, and adhesives.
• Precursor for Sol-Gel Coatings: A key component in formulating transparent, abrasion-resistant, and protective hybrid organic-inorganic (O-I) coatings for optical and electronic components.
• Reinforcement Filler Treatment: Improves the dispersion and interfacial bonding of silica and other fillers within rubber and plastic matrices, leading to stronger composites.
• Specialty Resin Synthesis: Serves as a building block for synthesizing advanced siloxane-based resins with tailored properties for high-tech applications.
• Adhesion Promoter in Electronics: Used in underfill materials, encapsulants, and dielectric layers to improve reliability and moisture resistance in semiconductor packaging.

Basic Information

Product Name	4,4,15,15-Tetraethoxy-9,10-Bis[3-(Triethoxysilyl)Propoxy]-3,8,11,16-Tetraoxa-4,15-Disilaoctadecane
CAS No.	93778-28-0
Molecular Formula	C34H78O14Si4
Molecular Weight	815.34 g/mol
Synonyms	Bis(triethoxysilylpropoxy) derivative of tetraethoxydisiloxane; 1,3-Bis[3-(triethoxysilyl)propoxy]-2,2-bis(ethoxy)-1,3-dioxa-2-silapropane (alternative structural name); Multi-armed ethoxysilane crosslinker; Tetrafunctional silane coupling agent; Tetrakis(triethoxysilylpropyl) derivative; Oligomeric ethoxysilane; Adhesion promoter 93778-28-0
EINECS	Contact for details

Quality Control

Every batch of our organosilane products is manufactured under strict quality control protocols to ensure consistency and high purity. We provide comprehensive Certificates of Analysis (COA) that detail key parameters such as assay, identity, and impurity profiles. Our quality system is designed to meet the rigorous demands of industrial and advanced material applications, ensuring reliable performance in your formulations.

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) and must be kept under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent hydrolysis and maintain efficacy.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC or NMR)	≥ 95.0%
Ethoxy Content	Contact for details
Refractive Index (n20/D)	~1.410 - 1.430
Density (g/mL at 20°C)	~1.00 - 1.05
Moisture (Karl Fischer)	≤ 0.5%

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