Description

11-Aminoundecyltrimethoxysilane is a bifunctional organosilane coupling agent featuring a long-chain alkyl spacer terminated by a primary amine group and a hydrolyzable trimethoxysilyl group. This unique structure enables it to form robust covalent bonds between inorganic substrates and organic polymers, significantly enhancing adhesion, mechanical strength, and durability in composite materials. It is essential for manufacturers in the advanced composites, coatings, adhesives, and plastics industries seeking to improve the performance and longevity of their products.

Application

• Glass Fiber & Mineral Filler Treatment: A key coupling agent for surface modification of glass fibers, silica, and other mineral fillers to improve their compatibility and bonding with epoxy, phenolic, and polyamide resin systems.
• Adhesive & Sealant Formulations: Used to enhance the adhesion of polyurethane, epoxy, and silicone-based adhesives and sealants to difficult-to-bond substrates like metals, glass, and ceramics.
• Polymer Modification & Compatibilization: Acts as a reactive modifier in engineering plastics and rubber compounds to improve filler dispersion, reduce viscosity, and increase tensile and impact strength.
• Surface Primers & Coatings: Formulated into primers to promote adhesion of paints, inks, and functional coatings to aluminum, steel, and other metal surfaces, offering excellent corrosion resistance.
• Nanomaterial Functionalization: Employed to graft amine functionalities onto the surface of nanoparticles (e.g., silica, carbon nanotubes) for further chemical modification or to improve dispersion in polymer matrices.

Basic Information

Product Name	11-Aminoundecyltrimethoxysilane
CAS No.	40762-31-0
Molecular Formula	C14H33NO3Si
Molecular Weight	291.51 g/mol
Synonyms	N-(Trimethoxysilylpropyl)undecylamine; 3-(Trimethoxysilyl)-1-aminoundecane; 11-Aminoundecyltrihydroxysilane (hydrolyzed form); γ-Aminoundecyltrimethoxysilane; Amino C11 silane; A1107 (analogous long-chain variant); Dynasylan 1189; Silane AY 11-1; Aminoalkylsilane coupling agent
EINECS	Contact for details

Quality Control

Our production of 11-Aminoundecyltrimethoxysilane adheres to stringent quality management protocols. Every batch is analyzed to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA), detailing purity, assay, and key impurity profiles, is provided with each shipment to guarantee consistency and reliability for your critical formulations.

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 material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) after opening to prevent hydrolysis and degradation. Keep away from strong alkalis and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC or Titration)	≥ 97.0%
Amino Value	Contact for details
Refractive Index (n20/D)	~1.445 - 1.455
Density (g/mL, 25°C)	~0.93 - 0.97
Moisture (Karl Fischer)	≤ 0.5%

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