Description

n-Undecyltrichlorosilane is a specialized organosilicon compound primarily used as a key intermediate and surface modifying agent. Its value lies in its ability to introduce a long-chain undecyl group with reactive trichlorosilyl functionality, enabling covalent bonding to inorganic surfaces or serving as a building block for more complex siloxane structures. This chemical is essential for manufacturers and R&D teams in the advanced materials, coatings, and specialty chemical sectors seeking to impart specific hydrophobic or coupling properties.

Application

• Surface Modification Agent: Used to hydrophobically modify silica, glass, metals, and other inorganic materials to improve moisture resistance and compatibility with organic polymers.
• Silicone Intermediate: Serves as a crucial precursor in the synthesis of custom silicone oils, resins, and elastomers with long alkyl chain modifications.
• Coupling Agent: Acts as an adhesion promoter in composite materials, enhancing the bond between organic resins and inorganic fillers or reinforcements.
• Nanomaterial Functionalization: Employed to coat nanoparticles (e.g., silica, titania) to prevent aggregation and tailor surface properties for specific applications.
• Water Repellent Coatings: A key component in formulating durable water-repellent treatments for textiles, construction materials, and optical surfaces.
• Chemical Synthesis: Used as an alkylating agent or to introduce the undecyl moiety into more complex molecular architectures in pharmaceutical and agrochemical research.

Basic Information

Product Name	n-Undecyltrichlorosilane
CAS No.	18052-07-8
Molecular Formula	C11H23Cl3Si
Molecular Weight	289.74 g/mol
Synonyms	Undecyltrichlorosilane; Trichloroundecylsilane; 1-Trichlorosilylundecane; n-Undecyl trichlorosilane; Undecyl trichlorosilane; Silane, undecyltrichloro-; n-C11H23SiCl3
EINECS	Contact for details

Quality Control

Our n-Undecyltrichlorosilane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing to ensure consistency and high purity, meeting the precise requirements of industrial and research applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat and incompatible materials. Due to its hygroscopic and highly volatile nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent moisture absorption and decomposition. Recommended storage temperature: 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 25°C)	~1.02 g/mL
Refractive Index (n20D)	~1.452

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