Description

[2-(Trimethoxysilyl)Ethylthio]Acetic Acid is a bifunctional organosilane coupling agent featuring both a hydrolyzable trimethoxysilyl group and a carboxylic acid functionality linked via a thioether bridge. This unique molecular structure makes it a critical component for creating stable covalent bonds between inorganic substrates and organic polymers. It is essential for formulators and manufacturers in the adhesives, sealants, and advanced composites industries who require enhanced interfacial adhesion, durability, and specific surface modification properties.

Application

• Adhesives & Sealants: Acts as a key adhesion promoter, improving bond strength and moisture resistance between organic polymers and glass, metals, or mineral surfaces.
• Surface Modification: Used to functionalize silica, glass fibers, and other inorganic fillers to improve compatibility and dispersion within polymer matrices like epoxies and polyurethanes.
• Rubber & Tire Manufacturing: Enhances the reinforcement of silica-filled rubber compounds, leading to improved abrasion resistance, reduced rolling resistance, and better wet grip in tire treads.
• Coatings & Inks: Improves the adhesion of coatings and printing inks to difficult substrates, providing enhanced scratch resistance and longevity.
• Composite Materials: Serves as a coupling agent in fiberglass-reinforced plastics (FRP) and other composites to optimize stress transfer from the matrix to the reinforcing fibers.
• Dental & Biomedical Materials: Utilized in the formulation of dental composites and bone cements to strengthen the filler-resin interface.

Basic Information

Product Name	[2-(Trimethoxysilyl)Ethylthio]Acetic Acid
CAS No.	32572-04-6
Molecular Formula	C9H20O5SSi
Molecular Weight	268.41 g/mol
Synonyms	3-(Trimethoxysilyl)-2-thiapropanoic acid; 2-[(3-Trimethoxysilyl)ethylthio]acetic acid; (3-Carboxymethylthiopropyl)trimethoxysilane; Mercaptoacetic acid 2-trimethoxysilyl ethyl ester; Silane A-1030 (common trade name); 3-(Trimethoxysilyl)propyl thioglycolate; Thioglycolic acid (3-trimethoxysilylpropyl) ester
EINECS	251-090-9

Quality Control

Our production of [2-(Trimethoxysilyl)Ethylthio]Acetic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including assay, purity verification, and impurity profiling, to ensure consistency and compliance with customer specifications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee traceability and quality assurance for your production processes.

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 degradation upon contact with atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Assay (GC or Titration)	≥ 95.0%
Refractive Index (n20/D)	1.460 - 1.470
Density (g/mL, 20°C)	1.15 - 1.20

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