Description

(N,n-Dimethyl-3-Aminopropyl)Methyldimethoxysilane CAS NO 67353-42-8 is a bifunctional organosilane coupling agent featuring both amino and methoxysilane groups. This dual functionality makes it a critical intermediate for modifying surfaces and enhancing adhesion between organic polymers and inorganic substrates. It is essential for manufacturers in the silicone, polymer, and coatings industries seeking to improve material compatibility, mechanical properties, and long-term durability in demanding environments.

Application

• Silicone Sealants & Adhesives: Acts as an adhesion promoter and crosslinking agent, significantly improving bond strength to glass, metals, and various plastics.
• Surface Treatment & Primers: Used to functionalize glass fibers, minerals, and metal oxides, creating a reactive surface for superior resin matrix bonding in composites.
• Polymer Modification: Incorporated as a comonomer or additive to enhance the thermal stability, mechanical strength, and moisture resistance of polyamides, epoxies, and other engineering plastics.
• Coatings & Inks: Improves pigment dispersion, substrate wetting, and scratch resistance in high-performance industrial and automotive coatings.
• Rubber & Tire Manufacturing: Serves as a coupling agent in silica-filled rubber compounds, reducing rolling resistance and improving wear characteristics.
• Fiber Sizing: Applied as a key component in sizing formulations for glass and carbon fibers to protect filaments and ensure optimal interfacial adhesion in composite materials.

Basic Information

Product Name	(N,n-Dimethyl-3-Aminopropyl)Methyldimethoxysilane
CAS No.	67353-42-8
Molecular Formula	C9H23NO2Si
Molecular Weight	205.37 g/mol
Synonyms	3-(Dimethylamino)propyl(methyl)dimethoxysilane; N,N-Dimethyl-3-aminopropylmethyldimethoxysilane; Dimethylaminopropylmethyldimethoxysilane; (3-(Dimethylamino)propyl)methyl-dimethoxysilane; Dynasylan® 1505; Silane A-2120; Amino Silane Coupling Agent; Methyldimethoxy[3-(N,N-dimethylamino)propyl]silane
EINECS	Contact for details

Quality Control

Our production of (N,n-Dimethyl-3-Aminopropyl)Methyldimethoxysilane adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including GC, NMR, and titration methods, to ensure consistent purity, composition, and performance. Certificates of Analysis (COA) documenting all key specifications are available upon request to support your quality assurance and regulatory compliance needs.

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); containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent hydrolysis and maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.423 - 1.428
Density (20°C)	0.91 - 0.93 g/cm³
Water Content (KF)	≤ 0.5%

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