Description

3,3-Dimethoxy-2,15,18,21-Tetraoxa-3-Siladocosane is a specialized organosilicon compound, specifically a silane coupling agent with a unique polyether chain structure. This molecular design is critical for creating stable interfaces between inorganic materials and organic polymers, enhancing adhesion and compatibility. It is essential for manufacturers in the advanced materials, coatings, and electronics industries seeking to improve product performance and durability.

Application

• As a surface modifier and coupling agent in advanced composite materials to improve the bond between glass, mineral, or metal fillers and polymer matrices.
• Key component in the formulation of high-performance adhesives and sealants, where it promotes adhesion to difficult-to-bond substrates.
• Used as an additive in coatings and inks to enhance surface wetting, dispersion stability, and scratch resistance.
• Employed in the electronics industry for surface treatment of silica and other fillers in epoxy molding compounds and underfill materials.
• Acts as a crosslinking agent or reactive intermediate in the synthesis of specialty silicone-polyether hybrid polymers.
• Potential use in biomedical applications for modifying implant surfaces to improve biocompatibility.

Basic Information

Product Name	3,3-Dimethoxy-2,15,18,21-Tetraoxa-3-Siladocosane
CAS No.	1442077-04-4
Molecular Formula	C20H44O7Si
Molecular Weight	424.65 g/mol
Synonyms	2,15,18,21-Tetraoxa-3-siladocosane, 3,3-dimethoxy-; 3,3-Dimethoxy-2,15,18,21-tetraoxa-3-siladocosane; Silane, dimethoxy[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethyl][3-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]propyl]-; Polyether-functional alkoxysilane; PEGylated silane coupling agent; Bis(polyethylene glycol) propyl methyl dimethoxysilane; (3-(2-(2-(2-Methoxyethoxy)ethoxy)ethoxy)propyl)(2-(2-(2-(2-methoxyethoxy)ethoxy)ethoxy)ethyl)dimethoxysilane
EINECS	Contact for details

Quality Control

Our production of 3,3-Dimethoxy-2,15,18,21-Tetraoxa-3-Siladocosane adheres to stringent quality management protocols. Each batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key physical properties are provided with every shipment to support your quality assurance processes.

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 or argon) to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC or HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.440 - 1.450
Density (g/mL at 20°C)	1.05 - 1.10

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