Description

11-Bromoundecylsilane is a bifunctional organosilane coupling agent featuring a long alkyl chain terminated with a reactive bromine atom and a silane group. This unique structure makes it a critical intermediate for creating covalently bonded organic-inorganic hybrid materials, enabling surface modification and functionalization. It is essential for researchers and manufacturers in advanced materials science, nanotechnology, and specialty chemical synthesis who require precise molecular architecture for tailored surface properties.

Application

• Surface Modification Agent: Used to functionalize silica, glass, metals, and other inorganic surfaces with long-chain alkyl bromides for subsequent chemical reactions or to alter surface energy.
• Polymer & Composite Precursor: Serves as a monomer or cross-linking agent in the synthesis of specialty silicones, polysilsesquioxanes, and organic-inorganic hybrid polymers.
• Nanomaterial Functionalization: Key for attaching organic functionalities to nanoparticles (e.g., silica, quantum dots) to improve dispersion in organic matrices or introduce specific reactive sites.
• Chromatography & Separation Science: Employed to prepare reversed-phase or specialty stationary phases for HPLC columns by bonding to silica gel.
• Bioconjugation & Biosensor Development: The bromoalkyl chain can be further derivatized to attach biomolecules (proteins, DNA) to silanized surfaces for diagnostic and sensing applications.
• Adhesion Promotion: Enhances the bonding between organic polymers (like epoxies, polyurethanes) and inorganic substrates (metals, glass) in coatings and adhesives.
• Self-Assembled Monolayer (SAM) Formation: Used to create ordered molecular films on silicon wafers and other substrates for microelectronics and surface science research.

Basic Information

Product Name	11-Bromoundecylsilane
CAS No.	469904-33-4
Molecular Formula	C₁₁H₂₃BrSi
Molecular Weight	263.29 g/mol
Synonyms	11-Bromoundecyltrimethoxysilane; (11-Bromoundecyl)trimethoxysilane; 11-Bromoundecyltrimethoxy silane; Trimethoxy(11-bromoundecyl)silane; Undecyl-11-bromo trimethoxysilane; Br(CH₂)₁₁Si(OCH₃)₃; 1-Bromo-11-(trimethoxysilyl)undecane
EINECS	Contact for details

Quality Control

Our 11-Bromoundecylsilane is manufactured under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including GC, HPLC, NMR, and FTIR, to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with every shipment, documenting key specifications such as assay and impurity profiles. Our quality commitment supports applications in R&D, pharmaceuticals, and electronics where material reliability is paramount.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive); containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20/D)	1.450 - 1.460
Density (g/mL, 25°C)	1.10 - 1.20

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