Description

1,1,3,3-Tetraethoxy-1,3-Dimethyldisiloxane is a versatile organosilicon compound, specifically a tetraalkoxysilane derivative, valued for its role as a key chemical intermediate and cross-linking agent. Its molecular structure, featuring both ethoxy and methyl groups attached to a disiloxane backbone, makes it a crucial precursor in the synthesis of silicone polymers, resins, and advanced materials. This product is essential for manufacturers and R&D laboratories in the silicone, coatings, adhesives, and electronics industries seeking to modify material properties such as hydrophobicity, thermal stability, and adhesion.

Application

• Silicone Polymer Synthesis: Serves as a fundamental building block and cross-linker in the production of polydimethylsiloxanes (PDMS) and other specialty silicone elastomers and fluids.
• Surface Modification & Coatings: Used to create hydrophobic and oleophobic surface treatments for textiles, glass, ceramics, and metals, enhancing water and stain resistance.
• Adhesives & Sealants: Acts as an adhesion promoter and cross-linking agent in high-performance silicone-based adhesives, sealants, and potting compounds.
• Electronic Encapsulants: Employed in the formulation of protective gels and encapsulants for electronic components, providing moisture resistance and electrical insulation.
• Precursor for Silica Hybrid Materials: Used in sol-gel processes to create organic-inorganic hybrid materials, thin films, and coatings with tailored mechanical and optical properties.
• Research & Development: A valuable reagent in organic and polymer chemistry research for developing novel siloxane-based materials and functionalized surfaces.

Basic Information

Product Name	1,1,3,3-Tetraethoxy-1,3-Dimethyldisiloxane
CAS No.	18001-60-0
Molecular Formula	C10H28O5Si2
Molecular Weight	284.50 g/mol
Synonyms	1,3-Dimethyl-1,1,3,3-tetraethoxydisiloxane; Bis(dimethylethoxysilyl) ether; Tetraethoxydimethyldisiloxane; Dimethyldisiloxane, tetraethoxy-; Disiloxane, 1,1,3,3-tetraethoxy-1,3-dimethyl-; Ethoxy-functional disiloxane; TETDS; TETDDS
EINECS	Contact for details

Quality Control

Our 1,1,3,3-Tetraethoxy-1,3-Dimethyldisiloxane is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including Gas Chromatography (GC) and Nuclear Magnetic Resonance (NMR), to ensure high purity and consistent performance. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key specifications such as assay, identity, and impurity profiles to support your quality assurance protocols.

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 (moisture-sensitive) nature, containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen or argon) after opening to prevent hydrolysis and maintain product integrity. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 20°C)	~0.95 g/mL
Refractive Index (n20D)	~1.385

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