Description

1,5-Divinyl-3,3-Diphenyl-1,1,5,5-Tetra-Methyltrisiloxane CAS NO 18586-22-6 is a specialized organosilicon compound featuring a unique trisiloxane backbone with reactive vinyl and phenyl substituents. This molecular architecture makes it a versatile intermediate and cross-linking agent for synthesizing high-performance silicone polymers and hybrid materials. It is essential for manufacturers in the silicone elastomer, advanced resin, and specialty coatings industries seeking to enhance thermal stability, mechanical properties, and adhesion characteristics.

Application

• Cross-linking agent in the production of high-consistency and liquid silicone rubbers (HCR/LSR).
• Key intermediate for synthesizing phenyl-containing silicone oils, resins, and elastomers with improved thermal and radiation resistance.
• Reactive modifier in epoxy, acrylic, and other polymer systems to introduce silicone-like flexibility and surface properties.
• Building block for creating tailored siloxane-based materials used in release coatings, pressure-sensitive adhesives, and sealants.
• Precursor in the development of sol-gel materials and inorganic-organic hybrid coatings for optical and electronic applications.
• Functional additive in formulations requiring enhanced compatibility between organic polymers and inorganic fillers.

Basic Information

Item	Details
Product Name	1,5-Divinyl-3,3-Diphenyl-1,1,5,5-Tetra-Methyltrisiloxane
CAS No.	18586-22-6
Molecular Formula	C22H32O2Si3
Molecular Weight	424.76 g/mol
Synonyms	Divinyldiphenyltetramethyltrisiloxane; 1,5-Divinyl-1,1,5,5-tetramethyl-3,3-diphenyltrisiloxane; Trisiloxane, 1,5-divinyl-3,3-diphenyl-1,1,5,5-tetramethyl-; Vinylphenylmethylsiloxane copolymer intermediate; DViDPhT; Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Our production of 1,5-Divinyl-3,3-Diphenyl-1,1,5,5-Tetra-Methyltrisiloxane adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including chromatographic purity analysis and functional group verification, to ensure consistency and performance. Certificates of Analysis (COA) detailing specific batch results 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). Keep away from heat, sparks, and open flame. This material is moisture-sensitive; ensure containers are sealed under an inert atmosphere such as nitrogen to prevent degradation and maintain purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Refractive Index (n20D)	1.480 - 1.490
Density (20°C)	0.98 - 1.02 g/cm³
Water Content (KF)	≤ 0.1%

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