Description

[(2,3-Epoxypropoxy)Propyl]Trimethoxysilane is a bifunctional organosilane coupling agent containing both epoxy and methoxysilane groups. This dual functionality is critical for creating strong, durable bonds between inorganic materials and organic polymers. It is essential for manufacturers in the composites, adhesives, coatings, and electronics industries seeking to enhance material performance, adhesion, and moisture resistance.

Application

• Filler and Reinforcement Treatment: Surface modification of glass fibers, minerals (e.g., silica, clay), and other inorganic fillers to improve compatibility and dispersion in epoxy, polyester, and polyurethane resin systems.
• Adhesives and Sealants: Used as an adhesion promoter to enhance bond strength and durability, particularly on glass, metal, and mineral substrates in structural and high-performance formulations.
• Coatings and Paints: Incorporated to improve coating adhesion to difficult substrates, increase corrosion resistance, and enhance the durability of primers and topcoats.
• Composite Materials: A key additive in fiber-reinforced plastics (FRP) and engineering composites to optimize the interface between the reinforcing fiber and the polymer matrix, leading to improved mechanical properties.
• Electronics Encapsulation: Improves the adhesion of epoxy molding compounds and potting materials to semiconductor chips, lead frames, and other electronic components.
• Rubber and Elastomers: Enhances the bonding between silica fillers and rubber polymers in tire treads and other high-performance rubber goods, improving wear resistance and reducing rolling resistance.

Basic Information

Product Name	[(2,3-Epoxypropoxy)Propyl]Trimethoxysilane
CAS No.	25704-87-4
Molecular Formula	C9H20O5Si
Molecular Weight	236.34 g/mol
Synonyms	3-Glycidoxypropyltrimethoxysilane; Glymo; (3-Glycidyloxypropyl)trimethoxysilane; GLYMO; γ-Glycidoxypropyltrimethoxysilane; A-187; KBM-403; Z-6040; 3-(2,3-Epoxypropoxy)propyltrimethoxysilane
EINECS	247-278-1

Quality Control

Our [(2,3-Epoxypropoxy)Propyl]Trimethoxysilane is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, epoxy content, and methoxy content. A comprehensive Certificate of Analysis (COA) detailing assay, identity, and impurity profiles is provided with every shipment to guarantee consistency and performance for your critical 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). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under a dry, inert atmosphere (e.g., nitrogen) to prevent hydrolysis and polymerization upon contact with atmospheric moisture.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to standard
Assay (GC)	≥ 97.0%
Refractive Index (n20D)	1.427 - 1.429
Density (g/mL, 25°C)	1.065 - 1.075
Epoxy Value	Contact for details
Methoxy Content	Contact for details

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