Description

1,2-Ethanediamine, N,n-Bis3-(Trimethoxysilyl)Propyl- CAS NO 74956-86-8 is a specialized organosilane coupling agent featuring a diamine core and multiple alkoxysilyl groups. This unique bifunctional structure is critical for creating durable chemical bridges between inorganic substrates and organic polymer matrices. It is an essential raw material for formulators and manufacturers in advanced materials sectors requiring enhanced adhesion, cross-linking, and surface modification. The compound's reactivity makes it a key component in high-performance coatings, sealants, and composite materials.

Application

• Primary coupling agent in epoxy, polyurethane, and acrylic resin systems for improved adhesion to glass, metals, and minerals.
• Surface modifier for silica, glass fibers, and other fillers to enhance compatibility and dispersion in polymer composites.
• Cross-linking agent and adhesion promoter in high-performance industrial and automotive sealants and adhesives.
• Key ingredient in the formulation of corrosion-resistant primers and coatings for metal substrates.
• Modifier for sol-gel processes to produce hybrid organic-inorganic materials with tailored properties.
• Intermediate in the synthesis of specialized silicone polyamines and other functional silanes.

Basic Information

Product Name	1,2-Ethanediamine, N,n-Bis3-(Trimethoxysilyl)Propyl- CAS NO 74956-86-8
CAS No.	74956-86-8
Molecular Formula	C14H36N2O6Si2
Molecular Weight	384.62 g/mol
Synonyms	N,N-Bis(3-(trimethoxysilyl)propyl)ethylenediamine; Bis(3-(trimethoxysilyl)propyl) ethylenediamine; 3,3'-[Ethylenediimino]bis[propyltrimethoxysilane]; Ethylenediamine, N,N-bis[3-(trimethoxysilyl)propyl]-; Silane A-1120 (trade name variant); Amino-functional silane coupling agent; Diaminosilane; Dynasylan® 1122 (potential trade name); JEFFSIL™ 1120 (potential trade name)
EINECS	Contact for details

Quality Control

Our production of 1,2-Ethanediamine, N,n-Bis3-(Trimethoxysilyl)Propyl- adheres to a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot is analyzed against stringent internal specifications, which typically include assay, identity confirmation, and impurity profiling. Certificates of Analysis (COA) documenting these results are provided with every shipment. We support our global clients by ensuring our materials and processes align with relevant industry and regulatory expectations.

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). Keep the container tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent degradation from atmospheric moisture. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC or Titration)	≥ 95.0%
Refractive Index (n20/D)	1.430 - 1.440
Density (g/mL, 20°C)	1.020 - 1.050

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