Description

3,7-Dioxa-4,6-Disilanonane, 4,4,6,6-Tetraethoxy-5-Methyl- is a specialized organosilicon compound, specifically a methyl-substituted tetraethoxysilane derivative. This chemical matters as a high-purity silane coupling agent and precursor for advanced materials synthesis, offering controlled reactivity for surface modification and cross-linking applications. It is primarily needed by manufacturers in the silicone polymers, advanced composites, and specialty coatings industries seeking to enhance material properties like adhesion, hydrophobicity, and thermal stability.

Application

• Silicone Resin & Elastomer Cross-Linking: Acts as a key cross-linking agent and modifier in the production of high-performance silicone rubbers and resins.
• Surface Treatment & Adhesion Promotion: Used as a coupling agent to treat inorganic fillers (e.g., silica, glass) to improve their compatibility and dispersion in organic polymer matrices.
• Hybrid Organic-Inorganic Material Synthesis: Serves as a versatile precursor in sol-gel processes for creating advanced ceramics, coatings, and nanocomposites.
• Waterproof & Protective Coatings: Imparts excellent water repellency and durability when incorporated into coatings for textiles, construction materials, and electronics.
• Filler Modification for Composites: Enhances the interfacial bonding between fillers and polymers in composite materials, leading to improved mechanical strength.
• Electronic Encapsulants & Sealants: Used in formulations for potting compounds and sealants that require stable dielectric properties and environmental protection.

Basic Information

Product Name	3,7-Dioxa-4,6-Disilanonane, 4,4,6,6-Tetraethoxy-5-Methyl-
CAS No.	16068-36-3
Molecular Formula	C11H28O6Si2
Molecular Weight	312.51 g/mol
Synonyms	5-Methyl-3,7-dioxa-4,6-disilanonane, 4,4,6,6-tetraethoxy-; Bis(triethoxysilyl)methane derivative; Methylenebis(triethoxysilane) analog; Tetraethoxy(methyl)disiloxane; 1,3-Bis(triethoxysilyl)-2-methylpropane; Methyl-substituted tetraethoxysilane dimer; Silane coupling agent SCA-ME; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our production of 3,7-Dioxa-4,6-Disilanonane, 4,4,6,6-Tetraethoxy-5-Methyl- adheres to a strict quality management system. Every batch undergoes rigorous analytical testing, including GC, NMR, and FTIR analysis, to ensure identity, purity, and consistency meet exacting 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, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic and highly volatile nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after each use to prevent moisture absorption and degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0%
Refractive Index (n20D)	1.390 - 1.400
Density (20°C)	0.95 - 1.00 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.