Description

1,3,5,7-Tetravinyl-1,3,5,7-Tetramethylcyclotetrasiloxane is a high-purity organosilicon monomer featuring a cyclic siloxane core with alternating vinyl and methyl substituents. This unique structure makes it a versatile and reactive precursor for synthesizing advanced silicone polymers and hybrid materials. It is essential for manufacturers in the silicone elastomer, resin, and specialty coatings industries seeking to introduce vinyl functionality for cross-linking and property modification. The compound is supplied with full traceability and quality documentation to support demanding industrial and research applications.

Application

• Cross-linking Agent: A key component in the production of addition-cure silicone rubbers (High Consistency Rubber - HCR and Liquid Silicone Rubber - LSR), providing reactive vinyl sites for platinum-catalyzed hydrosilylation.
• Silicone Resin Modifier: Used to introduce vinyl groups into silicone resin backbones, enhancing cure properties, adhesion, and thermal stability for protective coatings and electrical encapsulants.
• Hybrid Material Synthesis: Serves as a fundamental building block for creating silsesquioxanes (POSS) and other organically modified silicate structures for advanced composites.
• Release Coatings: Incorporated into formulations for paper and film release liners, contributing to controlled release force and durability.
• Adhesive & Sealant Formulations: Imparts improved flexibility and cure characteristics to specialty silicone adhesives and sealants.
• Optical & Electronic Materials: Used in the development of silicone gels, optical encapsulants, and dielectric materials due to its purity and reactivity.

Basic Information

Product Name	1,3,5,7-Tetravinyl-1,3,5,7-Tetramethylcyclotetrasiloxane
CAS No.	27342-69-4
Molecular Formula	C12H24O4Si4
Molecular Weight	344.66 g/mol
Synonyms	1,3,5,7-Tetramethyl-1,3,5,7-tetravinylcyclotetrasiloxane; Tetravinyltetramethylcyclotetrasiloxane; Vinyl D4; D4Vi; Cyclic vinylmethylsiloxane tetramer; 2,4,6,8-Tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane; Octavinyl-POSS precursor
EINECS	248-402-8

Quality Control

Our 1,3,5,7-Tetravinyl-1,3,5,7-Tetramethylcyclotetrasiloxane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including GC, NMR, and FTIR, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key physical properties are provided with every shipment. We adhere to relevant industry standards and can support customer-specific quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials such as strong acids and organic solvents. Recommended storage temperature is between 2°C and 25°C. Under these conditions, the product is typically stable. Keep container tightly sealed when not in use to prevent moisture absorption and maintain quality.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Refractive Index (n20D)	1.430 - 1.440
Density (20°C)	0.98 - 1.02 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.