Description

Styrylethyltrimethoxysilane, Tech-90 is a high-purity organosilane coupling agent designed for industrial applications. This compound is valued for its ability to form stable bonds between inorganic materials and organic polymers, enhancing composite performance. It is primarily utilized by manufacturers in the coatings, adhesives, and advanced materials sectors seeking to improve adhesion, durability, and moisture resistance.

Application

• As a key coupling agent in fiberglass-reinforced plastics and mineral-filled composites.
• Surface modification of inorganic fillers (e.g., silica, glass) to improve dispersion and compatibility in polymer matrices.
• Primer or additive in adhesive and sealant formulations to enhance bond strength to glass, metal, or mineral substrates.
• Crosslinking agent or co-monomer in the synthesis of specialty silicone resins and polymers.
• Improving the water repellency and weatherability of construction materials and protective coatings.
• Treatment of pigments and nanoparticles to prevent agglomeration and ensure stable performance in final products.

Basic Information

Product Name	Styrylethyltrimethoxysilane, Tech-90
CAS No.	119181-19-0
Molecular Formula	C13H20O3Si
Molecular Weight	252.38 g/mol
Synonyms	2-(4-Ethenylphenyl)ethyltrimethoxysilane; (2-(4-Vinylphenyl)ethyl)trimethoxysilane; p-Styrylethyltrimethoxysilane; Vinylphenethyltrimethoxysilane; Silane coupling agent KH-??? (commercial equivalent); Organosilane monomer; Styryl-functional silane
EINECS	Contact for details

Quality Control

Our Tech-90 grade of Styrylethyltrimethoxysilane is produced under a rigorous quality management system. Each batch is analyzed to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and key parameters is provided with every shipment to guarantee consistency and support your quality assurance protocols.

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 material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Clear colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 90.0%
Refractive Index (n20D)	1.480 - 1.490
Density (20°C)	1.00 - 1.05 g/cm³

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