Description

1,3-Divinyltetraethoxydisiloxane is a versatile organosilicon compound featuring both vinyl and ethoxy functional groups, making it a valuable reactive intermediate. This bifunctional structure is critical for applications requiring cross-linking, adhesion promotion, and surface modification. It is primarily utilized by manufacturers in the silicone polymers, advanced coatings, and electronics industries for creating specialized materials with enhanced properties.

Application

• Silicone Polymer Synthesis: A key monomer for producing vinyl-functional silicone resins, rubbers, and fluids with tailored cross-linking density.
• Adhesion Promoter: Enhances the bonding between organic polymers and inorganic substrates like glass, metals, and minerals in composite materials.
• Surface Modification Agent: Used to impart hydrophobic or specific reactive properties to surfaces of silica, fillers, and nanoparticles.
• Cross-linking Agent: Functions as a co-monomer in radiation-curable (e.g., UV) systems and peroxide-cured silicone formulations.
• Electronic Encapsulants & Sealants: A precursor in the formulation of high-performance, thermally stable protective coatings and sealants for electronic components.
• Specialty Coatings: Contributes to the development of release coatings, anti-fouling paints, and high-gloss finishes with improved durability.

Basic Information

Product Name	1,3-Divinyltetraethoxydisiloxane
CAS No.	3682-26-6
Molecular Formula	C12H26O5Si2
Molecular Weight	306.51 g/mol
Synonyms	Bis(vinyl)tetraethoxydisiloxane; 1,3-Divinyl-1,1,3,3-tetraethoxydisiloxane; Tetraethoxydivinyldisiloxane; Divinyltetraethoxydisiloxane; Vinyl TEOS disiloxane; Disiloxane, 1,3-divinyl-1,1,3,3-tetraethoxy-; 1,1,3,3-Tetraethoxy-1,3-divinyldisiloxane; 1,3-Divinyl-1,1,3,3-tetraethoxy-disiloxan
EINECS	222-969-5

Quality Control

Our 1,3-Divinyltetraethoxydisiloxane is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including GC, NMR, and titration methods, to ensure high purity and consistency. Certificates of Analysis (COA) documenting identity, assay, and impurity profiles are available upon request 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). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.395 - 1.405
Density (20°C)	0.95 - 0.99 g/mL
Water Content (KF)	≤ 0.1%

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