Description

2,2,7,7,9,9,14,14-Octamethyl-3,8,13-Trioxa-2,7,9,14-Tetrasilapentadecane is a high-purity organosilicon compound, specifically a linear siloxane derivative, valued for its role as a versatile chemical intermediate and functional additive. Its molecular structure provides unique properties such as thermal stability, hydrophobicity, and compatibility with organic matrices, making it a critical component in advanced material synthesis. This product is essential for manufacturers in the silicone polymers, specialty coatings, and electronics industries seeking to enhance product performance and process reliability.

Application

• Silicone Polymer Modification: Acts as a chain extender or cross-linking agent in the synthesis of polydimethylsiloxanes (PDMS) and other silicone elastomers to tailor flexibility and thermal properties.
• Surface Treatment & Coatings: Used as a hydrophobic agent or coupling agent to improve water repellency, adhesion, and durability of coatings on glass, metals, and ceramics.
• Electronics Encapsulation: Serves as a key intermediate in formulating silicone gels and potting compounds that protect sensitive electronic components from moisture and thermal stress.
• Release Agent Formulation: A building block for manufacturing high-performance silicone-based release coatings for adhesive tapes, labels, and molding applications.
• Personal Care & Cosmetics: Employed in the synthesis of silicone fluids and elastomers that provide a smooth, non-greasy feel in skincare and haircare products.
• Pharmaceutical Intermediates: Utilized in the controlled synthesis of siloxane-based carriers or excipients for drug delivery systems.
• Adhesive & Sealant Production: Functions as a reactive modifier to enhance the cure profile, elasticity, and environmental resistance of silicone adhesives and sealants.
• Research & Development: A valuable reagent for academic and industrial R&D in organosilicon chemistry and novel material science.

Basic Information

Product Name	2,2,7,7,9,9,14,14-Octamethyl-3,8,13-Trioxa-2,7,9,14-Tetrasilapentadecane
CAS No.	18547-30-3
Molecular Formula	C17H44O3Si4
Molecular Weight	420.89 g/mol
Synonyms	1,1,1,3,5,5,5-Heptamethyl-3-[(trimethylsilyl)oxy]trisiloxane; MD2M' (common notation); Hexamethyldisiloxane, 1,3-bis(trimethylsilyloxy)-; 1,3-Bis(trimethylsiloxy)-1,1,3,3-tetramethyldisiloxane; Tetrakis(trimethylsiloxy)disiloxane (related isomer); Linear siloxane tetramer; Siloxane oligomer; Octamethyltrisiloxanediol bis(trimethylsilyl) ether
EINECS	Contact for details

Quality Control

Our production of 2,2,7,7,9,9,14,14-Octamethyl-3,8,13-Trioxa-2,7,9,14-Tetrasilapentadecane adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including GC, HPLC, and NMR, to ensure high purity and consistent molecular structure. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, identity, and impurity profiles. Our quality commitment supports compliance with ISO 9001 standards and meets the exacting requirements of industrial and R&D applications.

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 strong acids, bases, and oxidizing agents. The container must be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0%
Refractive Index (n20D)	1.390 - 1.395
Density (20°C)	0.85 - 0.90 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.