Description

11-Chloroundecyltrimethoxysilane is a specialized bifunctional organosilane coupling agent featuring a long alkyl chain terminated with a reactive chloromethyl group and three hydrolyzable methoxysilyl groups. This unique molecular structure makes it a critical intermediate for creating durable covalent bonds between inorganic substrates and organic polymers or coatings. It is essential for manufacturers in the advanced materials sector seeking to enhance adhesion, dispersion, and compatibility in composite systems. Key industries that utilize this silane include specialty polymers, surface treatments, and high-performance adhesives and sealants.

Application

• Surface Modification Agent: Used to functionalize glass, silica, metals, and other inorganic surfaces to improve adhesion and compatibility with organic resins.
• Polymer Coupling Agent: Enhances the interfacial bonding in composite materials, such as fiberglass-reinforced plastics and mineral-filled polymers, leading to improved mechanical properties.
• Adhesion Promoter: Incorporated into primers, adhesives, and sealant formulations to boost bond strength to difficult substrates.
• Hydrophobic Coating Precursor: Serves as a key ingredient in the synthesis of water-repellent and anti-corrosion coatings for various industrial applications.
• Crosslinking Agent: Utilized in the production of silicone-based networks and hybrid organic-inorganic materials (ORMOSILs) for specialized applications.
• Chemical Synthesis Intermediate: The reactive chloroalkyl group allows for further chemical transformations, making it a valuable building block in organic and polymer synthesis.

Basic Information

Product Name	11-Chloroundecyltrimethoxysilane
CAS No.	17948-05-9
Molecular Formula	C14H31ClO3Si
Molecular Weight	310.94 g/mol
Synonyms	(11-Chloroundecyl)trimethoxysilane; 11-Chloro-1-undecyltrimethoxysilane; Trimethoxy(11-chloroundecyl)silane; γ-Chloroundecyltrimethoxysilane; Silane, trimethoxy(11-chloroundecyl)-; UCTMS-11Cl; Chloroundecyltrimethoxysilane
EINECS	Contact for details

Quality Control

Our 11-Chloroundecyltrimethoxysilane is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes rigorous analytical testing, including assay by GC or HPLC and verification of functional group content. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and key physical properties is provided with every shipment and is available upon request to 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 product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Chlorine Content	10.5 - 11.5 %
Refractive Index (n20D)	1.440 - 1.445
Density (20°C)	0.98 - 1.02 g/mL

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