Description

1,3-Diallyltetrakis(trimethylsiloxy)disiloxane is a specialized organosilicon compound featuring both allyl and trimethylsiloxy functional groups. This unique molecular architecture makes it a valuable reactive intermediate and cross-linking agent in advanced silicone polymer synthesis. It is primarily sought after by R&D chemists and formulation scientists in the silicone industry for developing high-performance materials. The compound, with CAS number 211931-07-6, enables the creation of polymers with tailored properties such as enhanced thermal stability, flexibility, and adhesion.

Application

• Silicone Elastomer & Rubber Cross-linking: Acts as a reactive site for hydrosilylation, used to create custom-cured silicone rubbers with specific mechanical properties.
• High-Performance Silicone Resins: Serves as a building block for formulating heat-resistant and weatherable silicone resins for coatings and composites.
• Release Coatings & Pressure-Sensitive Adhesives (PSAs): Incorporated into silicone release liners and adhesive formulations to modify surface energy and release characteristics.
• Silicone Fluids & Greases: Used to synthesize modified silicone oils with specific viscosities and thermal properties for lubricants and damping fluids.
• Electronics Encapsulation: A precursor for silicone gels and potting compounds that protect sensitive electronic components from moisture and stress.
• Personal Care & Cosmetic Ingredients: A key intermediate for producing silicone copolymers used as emollients, conditioners, and film-formers.

Basic Information

Product Name	1,3-Diallyltetrakis(trimethylsiloxy)disiloxane
CAS No.	211931-07-6
Molecular Formula	C20H52O5Si6
Molecular Weight	561.18 g/mol
Synonyms	1,3-Diallyl-1,1,3,3-tetrakis(trimethylsiloxy)disiloxane; Disiloxane, 1,3-diallyltetrakis(trimethylsiloxy)-; Tetrakis(trimethylsiloxy)-1,3-diallyldisiloxane; Allyl-functional siloxane; Allyl TMS disiloxane; Reactive silicone intermediate; Diallyl-POSS precursor (related structure)
EINECS	Contact for details

Quality Control

Our production of 1,3-Diallyltetrakis(trimethylsiloxy)disiloxane adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including GC, NMR, and FT-IR to confirm identity, assay, and the absence of critical impurities. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment. We support compliance with global regulatory frameworks, including REACH.

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, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent hydrolysis and maintain product integrity. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Water Content (KF)	≤ 0.1%
Refractive Index (n20D)	1.4050 - 1.4100
Density (20°C)	0.92 - 0.96 g/mL

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