Description

11-Acetoxyundecyltriethoxysilane is a specialized organosilicon coupling agent featuring a long alkyl chain terminated with an acetoxy group. This bifunctional structure is critical for creating durable chemical bridges between inorganic substrates and organic polymer matrices. It is essential for formulators and material scientists in the composites, coatings, and adhesive industries seeking to enhance interfacial adhesion and material performance.

Application

• As a surface modifier and coupling agent for glass, silica, and metal oxides to improve bonding with organic resins.
• Key component in the formulation of high-performance polymer composites and fiber-reinforced plastics (FRP) for automotive and aerospace applications.
• Used to develop specialty coatings with enhanced adhesion, corrosion resistance, and hydrophobicity.
• Primer or additive in sealants and adhesives to promote bonding to difficult substrates.
• Surface treatment for fillers and pigments to improve dispersion and compatibility in plastic and rubber compounds.
• Intermediate in the synthesis of more complex silane derivatives and functional materials.

Basic Information

Product Name	11-Acetoxyundecyltriethoxysilane
CAS No.	959053-85-1
Molecular Formula	C19H40O5Si
Molecular Weight	376.61 g/mol
Synonyms	11-(Acetoxy)undecyltriethoxysilane; Triethoxy(11-acetoxyundecyl)silane; Undecyltriethoxysilane, 11-acetoxy-; Acetoxyundecyltriethoxysilane; γ-Acetoxyundecyltriethoxysilane; Silane coupling agent KH-?? (trade name variant); 11-Acetoxy-1-undecyltriethoxysilane
EINECS	Contact for details

Quality Control

Our 11-Acetoxyundecyltriethoxysilane is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including assay by GC or HPLC and identity confirmation by FT-IR and NMR, to ensure high purity and consistency. A Certificate of Analysis (COA) detailing all specifications is provided with each 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 a dry inert atmosphere (e.g., nitrogen) to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 95.0%
Refractive Index (n20D)	1.430 - 1.440
Density (g/mL, 20°C)	0.95 - 0.98

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