Description

Divinyltetramethyldisiloxane is a versatile organosilicon compound, specifically a disiloxane with vinyl and methyl functional groups. This chemical serves as a critical reactive intermediate and cross-linking agent in the synthesis of advanced silicone polymers and materials. It is essential for manufacturers in the silicone elastomer, resin, and specialty coatings industries who require precise control over polymer architecture and properties.

Application

• Silicone Polymer Synthesis: A key monomer and chain extender for producing vinyl-functional silicone fluids, gums, and resins.
• Cross-linking Agent: Used in addition-cure (hydrosilylation) silicone systems, such as Liquid Silicone Rubber (LSR) and High-Consistency Rubber (HCR), to impart vulcanization sites.
• Surface Modification: Acts as a coupling agent or surface treatment chemical to modify inorganic materials like silica, enhancing compatibility with organic matrices.
• Adhesives & Sealants: Incorporated into formulations to improve adhesion, flexibility, and thermal stability of silicone-based adhesives and sealants.
• Release Coatings: Used in the production of silicone release liners for labels and tapes.
• Pharmaceutical & Cosmetic Intermediates: Serves as a building block for synthesizing specialized silicone derivatives used in personal care and pharmaceutical applications.
• Research & Development: Employed in academic and industrial R&D for developing novel silicone copolymers and hybrid materials.

Basic Information

Product Name	Divinyltetramethyldisiloxane
CAS No.	2627-95-4
Molecular Formula	C8H18OSi2
Molecular Weight	186.40 g/mol
Synonyms	1,3-Divinyl-1,1,3,3-tetramethyldisiloxane; Divinyltetramethyldisiloxane; Tetramethyldivinyldisiloxane; 1,3-Divinyltetramethyldisiloxane; Vinyl-terminated polydimethylsiloxane (short chain); Bis(vinyl-dimethylsiloxy)dimethylsilane (alternative); Disiloxane, 1,3-divinyl-1,1,3,3-tetramethyl-; DVTMDS
EINECS	220-100-6

Quality Control

Our Divinyltetramethyldisiloxane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC) and Nuclear Magnetic Resonance (NMR), to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key physical properties are provided with every shipment 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) to prevent hydrolysis and maintain product integrity. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless clear liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 98.0%
Refractive Index (n20/D)	1.410 - 1.415
Density (20°C)	0.82 - 0.86 g/mL
Water Content (KF)	≤ 0.05%

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