Description

(2-Triethoxysilylpropoxy)Ethoxysulfolane is a specialized organosilane coupling agent that integrates a sulfolane moiety, offering unique dual functionality for surface modification and adhesion promotion. This compound is engineered to bridge inorganic substrates and organic polymers, significantly enhancing composite material performance and durability. It is essential for manufacturers in the advanced materials, coatings, and electronics industries seeking to improve interfacial bonding and material stability.

Application

• As a key adhesion promoter in high-performance epoxy, polyurethane, and acrylic coatings for metals, glass, and plastics.
• A surface modification agent for silica, glass fibers, and mineral fillers to improve dispersion and compatibility in polymer composites.
• In the formulation of sealants and adhesives to enhance moisture resistance and long-term bond strength.
• As a functional additive in electronic encapsulants and underfill materials to reduce stress and improve reliability.
• For the surface treatment of nanoparticles to prevent agglomeration and enable stable integration into various matrices.
• In the development of specialty silane-based crosslinkers for silicone and hybrid polymer systems.

Basic Information

Product Name	(2-Triethoxysilylpropoxy)Ethoxysulfolane
CAS No.	502925-40-8
Molecular Formula	C15H34O7SSi
Molecular Weight	386.57 g/mol
Synonyms	3-[(2-Ethoxysulfolanyl)oxy]propyltriethoxysilane; 3-(2-Ethoxysulfolane-4-yloxy)propyltriethoxysilane; (3-Triethoxysilylpropoxy)ethoxysulfolane; Sulfolane ethoxy propyl triethoxysilane; Sulfolane-functional silane; Adhesion promoter with sulfolane group; Silane coupling agent, sulfolane type; 502925-40-8
EINECS	Contact for details

Quality Control

Our (2-Triethoxysilylpropoxy)Ethoxysulfolane is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including NMR, FT-IR, and GC, to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to guarantee compliance with your technical requirements.

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). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Refractive Index (n20D)	1.440 - 1.450
Density (g/mL, 20°C)	1.05 - 1.15
Water Content (KF)	≤ 0.5%

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