Description

Bis(3-Trimethoxysilylpropyl)-n-Methylamine is a bifunctional organosilane coupling agent featuring both a reactive methoxysilane group and a secondary amine functionality. This unique molecular structure makes it a critical component for enhancing adhesion and compatibility between inorganic materials and organic polymers. It is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as in advanced composite materials. Its ability to act as a surface modifier and crosslinking agent provides significant improvements in product durability and performance.

Application

• As a coupling agent and adhesion promoter in epoxy, polyurethane, and acrylic-based coatings and adhesives.
• As a surface treatment agent for glass fibers, minerals, and metal oxides to improve bonding with polymer matrices in composites.
• As a crosslinker and moisture scavenger in silicone sealants and RTV (Room Temperature Vulcanizing) elastomers.
• In the formulation of primer coatings for automotive, aerospace, and architectural applications to enhance paint adhesion and corrosion resistance.
• As a key intermediate in the synthesis of specialized silane-modified polymers (SMP) and hybrid organic-inorganic materials.
• For the functionalization of silica and other fillers in rubber compounding to reduce viscosity and improve mechanical properties.

Basic Information

Product Name	Bis(3-Trimethoxysilylpropyl)-n-Methylamine
CAS No.	31024-70-1
Molecular Formula	C13H33NO6Si2
Molecular Weight	355.58 g/mol
Synonyms	N-Methyl-3,3'-(methylazanediyl)bis(propan-1-amine) bis(trimethoxysilyl) derivative; N-Methylaminopropyltrimethoxysilane, dimer; 3,3'-(Methylimino)bis(propyltrimethoxysilane); Bis(trimethoxysilylpropyl)methylamine; Silane A-1120 (common trade name); Amino silane coupling agent; (3-Trimethoxysilylpropyl)methylamine dimer; N-Methylbis(3-trimethoxysilylpropyl)amine
EINECS	250-426-8

Quality Control

Our production of Bis(3-Trimethoxysilylpropyl)-n-Methylamine adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including Gas Chromatography (GC) and titration methods, to ensure consistent purity and performance. Certificates of Analysis (COA) detailing assay, identity, and key impurity profiles are provided with each shipment to guarantee compliance with your technical specifications.

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 to prevent contact with atmospheric moisture, which can lead to hydrolysis and polymerization.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.428 - 1.432
Density (20°C)	1.04 - 1.07 g/cm³
Moisture (Karl Fischer)	≤ 0.5%

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