Description

11-Chloroundecyltriethoxysilane is a specialized bifunctional organosilane coupling agent featuring a long hydrocarbon chain terminated with a reactive chloro group. This compound is engineered to create durable covalent bonds between inorganic substrates and organic polymers, significantly enhancing composite material performance. It is essential for manufacturers in the advanced materials, coatings, and adhesives industries seeking to improve adhesion, dispersion, and mechanical properties.

Application

• Surface modification of fillers (e.g., silica, glass fibers) to improve compatibility and dispersion in polymer matrices like epoxies, polyurethanes, and polyolefins.
• Key intermediate in the synthesis of functionalized silanes for specialty coatings, primers, and adhesion promoters on metals, glass, and minerals.
• Used in the production of moisture-curable sealants and adhesives, where it acts as a crosslinking agent and adhesion enhancer.
• Manufacture of hydrophobic and oleophobic surface treatments for textiles, paper, and construction materials.
• Development of functionalized nanoparticles and controlled-release systems in advanced material science and pharmaceutical research.
• As a coupling agent in mineral-filled composites to reduce viscosity, improve processing, and increase mechanical strength.

Basic Information

Product Name	11-Chloroundecyltriethoxysilane
CAS No.	120876-31-5
Molecular Formula	C17H37ClO3Si
Molecular Weight	352.02 g/mol
Synonyms	Triethoxy(11-chloroundecyl)silane; 11-Chloroundecyl triethoxysilane; (11-Chloroundecyl)triethoxysilane; γ-Chloroundecyltriethoxysilane; Silane, triethoxy(11-chloroundecyl)-; Undecylchlorotriethoxysilane; Chloroundecyltriethoxysilane
EINECS	Contact for details

Quality Control

Our 11-Chloroundecyltriethoxysilane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including GC, NMR, and titration, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key specifications are 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). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent degradation from moisture absorption.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Chlorine Content	9.5 - 10.5 %
Refractive Index (n20/D)	1.440 - 1.445
Density (20°C)	0.95 - 0.98 g/mL

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