Description

n-Butyl-3-Aminopropyltriethoxysilane is a bifunctional organosilane coupling agent featuring both an amino group and hydrolyzable ethoxy groups. This compound is essential for creating strong, durable bonds between inorganic materials and organic polymers, significantly enhancing composite performance. It is a critical raw material for manufacturers in the coatings, adhesives, sealants, and plastics industries seeking to improve material adhesion, mechanical strength, and moisture resistance.

Application

• Adhesion Promoter: Used in epoxy, polyurethane, and acrylic-based coatings and adhesives to improve bonding to glass, metals, and mineral surfaces.
• Filler & Reinforcement Treatment: Surface modification of silica, clay, glass fibers, and other mineral fillers to enhance dispersion and compatibility in polymer matrices like nylon, polyolefins, and engineering plastics.
• Waterborne System Modifier: Imparts improved wet adhesion and corrosion resistance in water-based paints and primers.
• Sealant & Caulk Formulation: Enhances flexibility, adhesion, and durability of silicone-modified polymers (MS Polymers) and other elastomeric sealants.
• Mineral & Stone Treatment: Acts as a primer or integral additive to protect and strengthen concrete, granite, and other porous building materials.
• Rubber Compounding: Improves the bonding between rubber and reinforcing materials like steel cord or fabric.

Basic Information

Product Name	n-Butyl-3-Aminopropyltriethoxysilane
CAS No.	94047-95-7
Molecular Formula	C13H31NO3Si
Molecular Weight	277.48 g/mol
Synonyms	3-(Butylamino)propyltriethoxysilane; Butylaminopropyltriethoxysilane; N-Butylaminopropyltriethoxysilane; N-Butyl-3-aminopropyltriethoxysilane; Silane, triethoxy[3-[(butylamino)propyl]]-; Dynasylan 1189; KBE 602; GF90; A 1122; 3-Triethoxysilylpropyl-N-butylamine
EINECS	Contact for details

Quality Control

Our production of n-Butyl-3-Aminopropyltriethoxysilane adheres to strict quality management protocols. Every batch undergoes rigorous analytical testing, including assay, purity, and identity confirmation, to ensure consistency and performance. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment to guarantee traceability and compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.420 - 1.425
Density (g/mL, 20°C)	0.910 - 0.920

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