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3-(trimethoxysilylpropyl)diethylenetriamine

CAS Number
35141-30-1
EC Number
252-390-9
Chemical Formula
C10H27N3O3Si
Molecular Weight
265.43 g/mol
Industries:AutomotiveAerospace & DefenseBuilding & ConstructionPlastics & PolymersCoatings, Adhesives, Sealants & Elastomers

Description

3-(Trimethoxysilylpropyl)diethylenetriamine (CAS 35141-30-1 ), commercially available as Dynasylan TRIAMO, is an aminosilane coupling agent that bridges inorganic substrates and organic polymer matrices. Its multiple amine groups enable both surface bonding and cross-linking functions within a single molecule, making it a preferred choice where standard monoamine silanes fall short. In adhesives, sealants, and epoxy systems, it improves adhesion to glass, metals, and mineral fillers by chemically linking the substrate to the polymer network. Electronics manufacturers use it as a surface primer on circuit board laminates and encapsulant interfaces to improve moisture resistance and bond durability. In coatings for automotive and aerospace components, it acts as an adhesion promoter on metal and composite surfaces, reducing delamination under thermal cycling. Plastics compounders incorporate it as a coupling agent for glass fiber-reinforced systems, improving mechanical strength retention in demanding structural applications. Supplied as a liquid, typically in neat form. Technical grade is the standard commercial offering, with purity levels commonly specified at 95% or higher. Packaging ranges from small laboratory quantities to drum and IBC supply for industrial-scale use, ensuring reliable delivery for diverse manufacturing requirements. Contact us for supply of 3-(trimethoxysilylpropyl)diethylenetriamine Request Quote

Other Names (Synonyms)

Dynasylan TRIAMO | 1,2-Ethanediamine, N-(2-aminoethyl)-N'-[3-(trimethoxysilyl)propyl]- | 3W3E2D4706 | 3-(2-(2-Aminoethyl)ethylamino)propyltrimethoxysilane | J289.914K | N-(2-aminoethyl)-N'-(3-(trimethoxysilyl)propyl)ethane-1,2-diamine | 1,2-Ethanediamine, N1-(2-aminoethyl)-N2-[3-(trimethoxysilyl)propyl]-

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Boiling Point114-118 °C/2 mmHg (lit.)
Density1.03 g/mL at 25 °C(lit.)
Flash Point257 °F
AppearanceClear, light to dark yellow liquid
ColorClear yellow
OdorAmine-like odor
FormLiquid
Water Solubility1000g/L at 20℃
Vapor Pressure1 mm Hg ( 20 °C)
Refractive Indexn 20/D 1.459(lit.)
Log P-3.9--0.74 at 20℃

Safety & Handling

Danger
GHS05· CorrosiveGHS07· IrritantGHS09· Environment

Trade & Regulatory

HS Code29319090
UN Number2735
ADR Class8
Packing GroupIII
Storage Class10 - Combustible liquids
WGK (Germany)1