Description

Methoxytriethyleneoxypropyltrimethoxysilane is a high-purity organosilane coupling agent with a unique triethylene glycol monomethyl ether functional group. This compound is engineered to provide superior adhesion promotion and compatibility between inorganic substrates and organic polymers. It is essential for manufacturers in the coatings, adhesives, and sealants industries seeking to enhance product durability and performance. Its reactive methoxysilane groups enable covalent bonding to surfaces, while the hydrophilic polyether chain offers flexibility and moisture resistance.

Application

• Adhesion Promoter: Primarily used in silicone sealants, adhesives, and coatings to improve bond strength to glass, metals, and minerals.
• Surface Modification: Imparts hydrophilicity and improves wetting properties for fillers, pigments, and glass fibers in composite materials.
• Crosslinking Agent: Functions as a crosslinker in moisture-curable polymer systems, such as RTV silicones and polyurethanes.
• Fiber Sizing: A key component in sizing formulations for fiberglass and other reinforcing fibers to enhance resin compatibility.
• Primer Formulation: Used in industrial and automotive primer coatings to ensure excellent substrate adhesion and corrosion resistance.
• Release Coatings: Modifies surface energy in paper release liners and other non-stick applications.

Basic Information

Product Name	Methoxytriethyleneoxypropyltrimethoxysilane
CAS No.	132388-45-5
Molecular Formula	C13H30O7Si
Molecular Weight	326.46 g/mol
Synonyms	3-(2-(2-(2-Methoxyethoxy)ethoxy)ethoxy)propyltrimethoxysilane; Triethylene glycol monomethyl ether trimethoxysilylpropyl ether; Silane A-1230; (3-(2-(2-(2-Methoxyethoxy)ethoxy)ethoxy)propyl)trimethoxysilane; MEMO; γ-(Methoxytriethyleneoxy)propyltrimethoxysilane; Dynasylan® 4146; Polyether functional silane
EINECS	Contact for details

Quality Control

Our Methoxytriethyleneoxypropyltrimethoxysilane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including gas chromatography (GC) for purity and identity confirmation via FT-IR and NMR spectroscopy, to ensure it meets precise specifications. Certificates of Analysis (COA) detailing purity, assay, and key physical properties are provided with every shipment to guarantee traceability and batch-to-batch consistency for your formulation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at 15-25°C. This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed and under a dry inert atmosphere (e.g., nitrogen) after opening to prevent hydrolysis and maintain optimal purity and reactivity.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20D)	1.430 - 1.435
Density (20°C)	1.05 - 1.10 g/cm³
Water Content (KF)	≤ 0.5%

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