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3-Glycidoxypropyltriethoxysilane

Chemical Name:	3-Glycidoxypropyltriethoxysilane
Product Category:	Epoxy Silanes \| Silane Coupling Agent
Structural Formula:
CAS NO.:	2602-34-8
Molecular formula:	C₁₂H₂₆O₅Si
EINECS:	220-011-6
Molecular Weight:	278.42 g/mol
Appearance:	Colorless to slightly yellow transparent liquid

3-Glycidoxypropyltriethoxysilane Description

(3-Glycidyloxypropyl)triethoxysilane, commonly referred to as GPTES. GPTES is a versatile organosilane with epoxy and silane functional groups, widely used to enhance adhesion, surface modification, and material performance. It plays a key role in coatings, adhesives, composites, and semiconductor applications by improving the bond between organic polymers and inorganic surfaces like glass, metal, ceramics, and minerals.

With excellent hydrolysis resistance, crosslinking properties, and broad resin compatibility, GPTES ensures superior durability, chemical resistance, and mechanical strength, making it essential for high-performance industrial formulations.

Chemical name	3-Glycidoxypropyltriethoxysilane
Synonyms	3-(2,3-Epoxypropyloxy) propyltriethoxysilane, Glycidyl 3-Triethoxysilylpropyl Ether, GPTES
Boiling Point	124°C at 3 mmHg
Viscosity	Approximately 3 cSt at 25°C
Flash Point	144°C
Density	1.00 g/mL at 20°C
Refractive Index(n_D²⁰)	1.425 at 20°C
Solubility	Reacts slowly with moisture; hydrolyzes in the presence of water
Uses	Adhesion Promoter: Enhances adhesion between organic polymers and inorganic substrates, improving mechanical properties of composites. Surface Modifier: Used to modify surface properties of glass fibers, minerals, and fillers, enhancing compatibility with resin matrices. Crosslinking Agent: Acts as a crosslinker in polymerization processes, enhancing thermal and chemical resistance of the final product. Coatings and Sealants: Incorporated into coatings and sealants to improve moisture resistance and durability. Semiconductor Industry: Utilized in semiconductor manufacturing for surface modification and as a coupling agent.
Safety and Handling	Hazard Statements: Causes skin irritation Causes serious eye irritation May cause respiratory irritation Precautionary Measures: Wear protective gloves and eye/face protection. Use only outdoors or in a well-ventilated area. Avoid breathing vapors. First Aid Measures: Inhalation: Move to fresh air and keep at rest. Seek medical attention if symptoms persist. Skin Contact: Wash with plenty of soap and water. Remove contaminated clothing. Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Ingestion: Rinse mouth. Do not induce vomiting. Seek medical advice.
Packaging	Our standard packing is net 25kg / 200 kg drums / 1000kg/IBC，or according to your requirements.
Storage	Storage: Kept in a low temperature, dry and ventilated place, avoid direct sunlight. Shelf life: One year in ventilating, cool and dry area.
Sample	Provided for free
Inventory items	5 tons.
Price	Please contact us to get the new price.

Packaging Specifications

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3-Glycidoxypropyltriethoxysilane : Guide

(3-Glycidyloxypropyl)triethoxysilane (CAS 2602-34-8) is a high-performance silane coupling agent widely used in coatings, adhesives, composites, electronics, and polymer modification. With its epoxy and silane functional groups, it significantly improves adhesion, durability, and chemical resistance in various industrial applications.

🔹 Key Benefits:
✔ Enhances adhesion between organic and inorganic materials
✔ Improves mechanical and thermal stability in composites
✔ Increases water and chemical resistance in coatings and adhesives
✔ Widely used in electronics, automotive, aerospace, and construction

⚠ Safety Precautions: Proper handling and storage are essential to prevent exposure and maintain product integrity.