Description

4-Aminobutyldimethylmethoxysilane is a bifunctional organosilicon compound featuring both an amino group and a hydrolyzable methoxy silane group. This unique structure makes it an essential coupling agent and surface modifier, enabling strong adhesion between organic polymers and inorganic substrates. It is particularly valuable in the composites, coatings, and sealants industries for enhancing mechanical properties, moisture resistance, and durability.

Application

• As a silane coupling agent in fiberglass-reinforced plastics and mineral-filled composites to improve interfacial bonding and mechanical strength.
• Surface pretreatment and primer formulation for metals, glass, and minerals to enhance coating adhesion and corrosion protection.
• Modification of silica and other fillers in silicone rubber and epoxy resin systems to improve dispersion and reinforcement.
• Key intermediate in the synthesis of specialized silicone polymers and functional silanes for advanced material science.
• Adhesion promoter in sealants, adhesives, and paints, especially for applications requiring resistance to humidity and environmental stress.
• Potential use in the surface functionalization of nanoparticles for biomedical or electronic applications.

Basic Information

Product Name	4-Aminobutyldimethylmethoxysilane
CAS No.	3663-43-2
Molecular Formula	C7H19NO2Si
Molecular Weight	177.32 g/mol
Synonyms	N-[3-(Dimethylmethoxysilyl)propyl]amine; 3-(Dimethylmethoxysilyl)-1-propanamine; γ-Aminopropyldimethylmethoxysilane; (3-Aminopropyl)dimethylmethoxysilane; Amino functional silane; AMMS; APDMMS; Silane coupling agent KH-? (Analog); Dow Corning Z-? (Analog)
EINECS	Contact for details

Quality Control

Our production of 4-Aminobutyldimethylmethoxysilane adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including GC, HPLC, and NMR, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key physical properties are provided to guarantee supply reliability and product traceability for your formulation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Due to its hygroscopic and moisture-sensitive nature, containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) after opening to prevent hydrolysis and degradation. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20D)	1.420 - 1.430
Density (g/mL, 20°C)	0.90 - 0.95
Water Content (Karl Fischer)	≤ 0.5%

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