Description

2,4,6,8-Tetramethylcyclotetrasiloxane is a key organosilicon intermediate, specifically a methyl-substituted cyclic siloxane. This compound is valued for its role as a versatile building block in the synthesis of silicone polymers and specialty organosilicon materials. It is essential for manufacturers in the silicone elastomer, resin, and specialty chemical industries seeking to modify polymer properties and introduce specific functionalities.

Application

• Silicone Polymer Synthesis: A fundamental monomer and chain transfer agent for producing polydimethylsiloxanes (PDMS) and other silicone fluids, elastomers, and resins.
• Functional Silicone Precursor: Serves as a starting material for creating custom organosilicon compounds with tailored properties for coatings and release agents.
• Personal Care & Cosmetic Ingredients: Used in the manufacture of silicone-based conditioning agents, emollients, and volatile carriers for antiperspirants and hair care products.
• Hydrophobic Coatings: A precursor for siloxane-based formulations that impart water repellency to textiles, paper, and construction materials.
• Adhesives & Sealants: Incorporated to modify rheology, improve flow, and enhance the thermal stability of silicone-based adhesive and sealant formulations.
• Electronics & Electrical: Used in the production of silicone encapsulants, potting compounds, and insulating materials for electronic components.
• Laboratory & Research: Employed as a reagent in organic and organometallic synthesis for introducing siloxane structures into novel molecules.

Basic Information

Product Name	2,4,6,8-Tetramethylcyclotetrasiloxane
CAS No.	2370-88-9
Molecular Formula	C4H16O4Si4
Molecular Weight	240.51 g/mol
Synonyms	1,3,5,7-Tetramethylcyclotetrasiloxane; Tetramethylcyclotetrasiloxane; D2 Tetramer; Octamethylcyclotetrasiloxane, Tetramethyl derivative; Cyclotetrasiloxane, 2,4,6,8-tetramethyl-; 2,4,6,8-Tetramethyl-2,4,6,8-tetrahydroxycyclotetrasiloxane; Me4D4H
EINECS	219-139-1

Quality Control

Our 2,4,6,8-Tetramethylcyclotetrasiloxane is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including GC and NMR, to ensure high purity and consistent performance for your synthesis needs. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with every shipment.

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.

Specification

Item	Specification
Appearance	Colorless clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.1%
Refractive Index (n20D)	1.3880 - 1.3920
Density (20°C)	0.99 - 1.01 g/cm³

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