Description

Cyclotetrasiloxane, 2,4-Diethenyl-2,4,6,6,8,8-Hexamethyl- is a specialized organosilicon compound belonging to the class of vinyl-functionalized cyclic siloxanes. This chemical serves as a critical reactive intermediate and cross-linking agent in the synthesis of advanced silicone polymers and resins. It is essential for manufacturers in the silicone elastomer, adhesive, and specialty coating industries seeking to enhance material properties through tailored molecular architecture.

Application

• Silicone Elastomer & Rubber Cross-linking: Acts as a key monomer or cross-linker in the production of high-performance, heat-cured (HCR) and liquid silicone rubbers (LSR) for automotive, medical, and industrial seals.
• Silicone Resin Modification: Used to introduce vinyl groups into silicone resin backbones, improving cure characteristics, adhesion, and thermal stability for protective coatings and electrical encapsulants.
• Addition-Cure Silicone Systems: A fundamental component in platinum-catalyzed addition cure systems for low-stress, low-volatile applications such as potting compounds and optical grade silicones.
• Release Coatings & Pressure-Sensitive Adhesives (PSAs): Incorporated to modify the release force and anchorage properties in silicone release liners and specialty adhesives.
• Personal Care & Cosmetic Ingredients: Serves as a precursor in the synthesis of silicone-based fluids and elastomers used in skincare and haircare formulations for their smooth, non-greasy feel.
• Hybrid Organic-Inorganic Materials: Utilized in sol-gel processes to create hybrid coatings with enhanced mechanical strength, chemical resistance, and optical clarity.

Basic Information

Item	Details
Product Name	Cyclotetrasiloxane, 2,4-Diethenyl-2,4,6,6,8,8-Hexamethyl-
CAS No.	17980-61-9
Molecular Formula	C12H24O4Si4
Molecular Weight	344.67 g/mol
Synonyms	2,4-Divinyl-2,4,6,6,8,8-hexamethylcyclotetrasiloxane; Divinyltetramethylcyclotetrasiloxane; 1,3-Divinyl-1,1,3,3,5,5,7,7-octamethylcyclotetrasiloxane; Vinyl Q Cyclic; D4Vi; Cyclic vinyl siloxane; Tetrakis(dimethylvinylsiloxy)silane; Tetramethyl Divinyl Cyclotetrasiloxane
EINECS	241-934-8

Quality Control

Our production of Cyclotetrasiloxane, 2,4-Diethenyl-2,4,6,6,8,8-Hexamethyl- adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced chromatographic and spectroscopic techniques. Certificates of Analysis (COA) detailing purity, identity, and key impurity profiles are provided and can be tailored to meet specific customer or regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. Under recommended storage conditions, the product is stable. For long-term storage, consider maintaining under an inert atmosphere such as nitrogen to prevent potential moisture uptake or polymerization.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.05%
Refractive Index (n20D)	1.410 - 1.415
Density (20°C)	0.98 - 1.02 g/cm³

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