Description

Methoxytriethyleneoxypropyltrichlorosilane is a specialized organosilicon coupling agent featuring a reactive trichlorosilyl head group and a hydrophilic triethylene glycol monomethyl ether tail. This bifunctional structure is critical for creating durable covalent bonds between inorganic substrates and organic polymers or coatings. It is essential for manufacturers in the advanced materials sector seeking to enhance adhesion, modify surface energy, and impart specific functional properties. Key industrial applications span from high-performance silicone resins and adhesives to specialized surface treatments for optics, electronics, and composite materials.

Application

• As a key coupling agent and crosslinker in the synthesis of specialty silicone resins and elastomers with tailored properties.
• Surface modification of glass, silica, and metal oxides to improve adhesion of polymer coatings, inks, and adhesives.
• Manufacture of release coatings and pressure-sensitive adhesives where controlled surface energy is required.
• Precursor for creating hydrophilic or moisture-permeable surfaces in medical devices and filtration membranes.
• Functionalization of nanoparticles and fillers for improved dispersion and compatibility in composite materials.
• Intermediate in the production of advanced polyurethane and epoxy systems requiring enhanced moisture resistance and mechanical strength.
• Used in optical fiber coatings and electronic encapsulants to protect against environmental stress.

Basic Information

Item	Details
Product Name	Methoxytriethyleneoxypropyltrichlorosilane
CAS No.	228700-87-6
Molecular Formula	C13H27Cl3O4Si
Molecular Weight	381.80 g/mol
Synonyms	3-(2-(2-(2-Methoxyethoxy)ethoxy)ethoxy)propyltrichlorosilane; (3-(2-(2-(2-Methoxyethoxy)ethoxy)ethoxy)propyl)trichlorosilane; Triethylene glycol monomethyl ether trichlorosilane; Trichloro[3-(2-(2-(2-methoxyethoxy)ethoxy)ethoxy)propyl]silane; Silane, trichloro[3-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]propyl]-; PEG3 methyl ether trichlorosilane
EINECS	Contact for details

Quality Control

Our Methoxytriethyleneoxypropyltrichlorosilane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including assay by GC or titration and impurity profiling, to ensure high purity and consistent performance. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all critical specifications. Our quality commitment supports applications requiring reliable material properties and supply chain traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Due to its hygroscopic (moisture-sensitive) nature, containers must be kept sealed under a dry inert atmosphere (e.g., nitrogen or argon) to prevent hydrolysis and maintain product integrity. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Chloride Content	Contact for details
Density (20°C)	~1.18 g/cm³
Refractive Index (n20D)	~1.455

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