Description

3-Glycidoxypropyltrimethoxysilane is a key organofunctional silane coupling agent, essential for creating durable bonds between inorganic materials and organic polymers. Its bifunctional structure, featuring both a hydrolysable methoxysilyl group and a reactive epoxy group, makes it a critical component for enhancing adhesion, moisture resistance, and mechanical properties in composite systems. This product is vital for manufacturers in the coatings, adhesives, sealants, elastomers (CASE), and advanced composites industries seeking to improve product performance and longevity.

Application

• As a coupling agent and adhesion promoter in epoxy, polyurethane, and acrylic-based coatings, primers, and adhesives.
• Surface treatment for glass fibers, minerals, and fillers (e.g., silica, clay) to improve reinforcement in epoxy and polyester composites.
• Modification of mineral surfaces in dental composites and restorative materials to enhance filler-matrix bonding.
• Crosslinking agent or reactive intermediate in the synthesis of specialty silicone resins and modified polymers.
• Improving the water resistance and durability of sealants and encapsulants in construction and electronics.
• Enhancing the adhesion of inks and coatings to difficult-to-bond substrates like metals and treated plastics.

Basic Information

Product Name	3-Glycidoxypropyltrimethoxysilane
CAS No.	2530-83-8
Molecular Formula	C9H20O5Si
Molecular Weight	236.34 g/mol
Synonyms	Glycidoxypropyltrimethoxysilane; (3-Glycidyloxypropyl)trimethoxysilane; GPTMS; γ-Glycidoxypropyltrimethoxysilane; Silane A-187; Z-6040; 3-(2,3-Epoxypropoxy)propyltrimethoxysilane; O-[3-(Trimethoxysilyl)propyl]glycidol
EINECS	219-784-2

Quality Control

Our production of 3-Glycidoxypropyltrimethoxysilane adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed against comprehensive specifications using advanced techniques like gas chromatography (GC) and infrared spectroscopy (IR). A Certificate of Analysis (COA) detailing purity, assay, and key physical properties is provided with every shipment to support your quality assurance and regulatory compliance needs.

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); containers must be kept tightly sealed to prevent hydrolysis and degradation upon contact with atmospheric moisture.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.426 - 1.430
Density (20°C)	1.065 - 1.075 g/mL
Color (APHA)	≤ 50

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