Description

1-Allyl-1,1,3,3-Tetramethyldisiloxane is a versatile organosilicon compound featuring both allyl and tetramethyldisiloxane functional groups, making it a valuable reactive intermediate. Its core value proposition lies in its ability to act as a key building block for synthesizing modified silicones and specialty polymers, introducing cross-linking sites and organic functionality. This product is essential for R&D chemists and manufacturers in the silicone, polymer, and advanced materials sectors seeking to develop materials with tailored properties.

Application

• Silicone Modification: Serves as a reactive monomer or chain extender for introducing allyl groups into silicone polymers, enhancing cross-linking capabilities and thermal stability.
• Hydrosilylation Reactions: Acts as a core starting material in platinum-catalyzed hydrosilylation processes to create custom siloxane structures and functional fluids.
• Polymer Synthesis: Used as an intermediate in the production of specialty polymers, including silicone-epoxy hybrids and other copolymer systems.
• Surface Treatment Agent: Can be utilized to modify surface properties of inorganic materials, imparting hydrophobic or release characteristics.
• Adhesive & Sealant Formulations: Incorporated as a functional additive to improve the cure profile and flexibility of silicone-based adhesives and sealants.
• Lubricant & Fluid Additive: Employed in the synthesis of high-performance silicone fluids and lubricants for specialized industrial applications.

Basic Information

Product Name	1-Allyl-1,1,3,3-Tetramethyldisiloxane
CAS No.	18387-26-3
Molecular Formula	C7H18OSi2
Molecular Weight	174.39 g/mol
Synonyms	Allyltetramethyldisiloxane; 1,1,3,3-Tetramethyl-1-allyldisiloxane; Allylpentamethyldisiloxane (common misnomer); Tetramethylallyldisiloxane; Disiloxane, 1-allyl-1,1,3,3-tetramethyl-; Allyl(TMS)2O; (Allyldimethylsilyloxy)trimethylsilane
EINECS	Contact for details

Quality Control

Our 1-Allyl-1,1,3,3-Tetramethyldisiloxane is produced under stringent quality management protocols. Each batch undergoes rigorous analytical testing, including GC and NMR, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing identity, assay, and impurity profiles 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, well-ventilated area away from heat sources and incompatible materials. Due to its highly volatile nature, ensure containers are kept tightly sealed when not in use to prevent evaporation and maintain product integrity. Recommended storage temperature is 2-25°C.

Specification

Item	Specification
Appearance	Colorless clear liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Density (20°C)	~0.78 g/mL
Refractive Index (n20/D)	~1.405

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