Description

6-(2-Methoxyethoxy)-6-Octadecyl-2,5,7,10-Tetraoxa-6-Silaundecane is a specialized organosilicon compound, specifically a silane coupling agent with a long alkyl chain and polyether functionality. This unique structure provides excellent compatibility and reactivity, making it a valuable intermediate for modifying surface properties and enhancing adhesion. It is primarily used in advanced material science for applications requiring improved hydrophobicity, dispersion, and interfacial bonding. Industrial R&D and manufacturing sectors involved in high-performance coatings, sealants, and polymer composites will find this chemical essential for product innovation.

Application

• As a surface modifier and coupling agent in inorganic fillers (e.g., silica, glass fibers) for polymer composites.
• To impart hydrophobic and oleophobic properties to surfaces in protective coatings and textile treatments.
• As a key intermediate in the synthesis of specialty surfactants and emulsifiers with siloxane backbones.
• For improving the adhesion and compatibility between organic polymers and inorganic substrates in adhesives and sealants.
• In the formulation of release coatings and lubricants for industrial and automotive applications.
• As a dispersing aid for pigments and nanoparticles in advanced coating systems.
• Potential use in personal care products as a conditioning agent or emollient due to its silky texture and film-forming ability.

Basic Information

Product Name	6-(2-Methoxyethoxy)-6-Octadecyl-2,5,7,10-Tetraoxa-6-Silaundecane
CAS No.	94277-91-5
Molecular Formula	C27H58O5Si
Molecular Weight	490.8 g/mol
Synonyms	Octadecyl PEG-2 methyl ether dimethicone; Octadecylmethicone copolyol; 6-Octadecyl-6-(2-methoxyethoxy)-2,5,7,10-tetraoxa-6-silaundecane; Silane, [2-[2-(2-methoxyethoxy)ethoxy]ethoxy](octadecyl)-; (Octadecyl)[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]silane; Polyoxyethylene (2) octadecyl methyl ether silane; AB1132686; LS192176
EINECS	Contact for details

Quality Control

Our 6-(2-Methoxyethoxy)-6-Octadecyl-2,5,7,10-Tetraoxa-6-Silaundecane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity, consistent performance, and compliance with agreed specifications. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with every shipment. We support custom synthesis and grade development to meet specific application requirements.

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). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen) after opening to prevent moisture absorption and degradation. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (GC or HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Refractive Index (20°C)	1.450 - 1.460
Density (20°C)	0.95 - 1.00 g/mL

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