Description

11,11-Dimethoxyundecyltriethoxysilane is a specialized organosilicon compound featuring a unique long-chain alkoxy structure. This bifunctional molecule is valued for its ability to act as a coupling agent, creating durable chemical bridges between organic polymers and inorganic substrates. It is essential for manufacturers in the coatings, adhesives, and advanced materials sectors seeking to enhance adhesion, hydrophobicity, and surface compatibility.

Application

• As a surface modification agent for glass, silica, and metal oxides to improve polymer adhesion.
• A key coupling agent in silicone rubber and resin formulations to enhance mechanical properties and filler dispersion.
• In the synthesis of hybrid organic-inorganic materials (ORMOSILs) for advanced coatings and optical applications.
• For creating hydrophobic and oleophobic surfaces on textiles, paper, and construction materials.
• As a chemical anchor or primer in high-performance adhesive and sealant systems.
• In the development of release coatings and non-stick surfaces.
• For the functionalization of nanoparticles to improve their compatibility in composite matrices.

Basic Information

Product Name	11,11-Dimethoxyundecyltriethoxysilane
CAS No.	786687-01-2
Molecular Formula	C19H42O5Si
Molecular Weight	378.62 g/mol
Synonyms	Triethoxy(11,11-dimethoxyundecyl)silane; Undecyltriethoxysilane, 11,11-dimethoxy-; 11,11-Dimethoxyundecyl triethoxysilane; (11,11-Dimethoxyundecyl)triethoxysilane; Silane, triethoxy(11,11-dimethoxyundecyl)-; DTUS (abbreviation); A proprietary silane coupling agent with a C11 chain.
EINECS	Contact for details

Quality Control

Our 11,11-Dimethoxyundecyltriethoxysilane is manufactured under strict process controls to ensure batch-to-batch consistency and high purity. Quality is verified through analytical techniques including GC, NMR, and FTIR. A Certificate of Analysis (COA) detailing purity and specific parameters is provided with each shipment to support your quality assurance protocols.

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). Due to its hygroscopic nature, containers must be kept tightly sealed to exclude moisture. Keep away from heat and incompatible materials such as strong acids and bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Refractive Index (n20D)	1.420 - 1.430
Density (g/mL, 20°C)	0.92 - 0.96
Moisture (KF)	≤ 0.5%

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