Description

4-Triethoxysilylaniline (CAS No. 7003-80-7) is a highly versatile organosilane compound with the molecular formula C₁₂H₂₁NO₃Si. This specialized chemical features both an amine-functional phenyl group and triethoxysilyl moieties, making it an excellent coupling agent for surface modification and adhesion promotion in advanced materials science. Its unique bifunctional structure allows it to act as a molecular bridge between organic polymers and inorganic substrates such as glass, metals, and ceramics. The compound is particularly valuable in creating hybrid organic-inorganic composites with enhanced mechanical properties and thermal stability. Supplied as a clear to pale yellow liquid with a characteristic amine odor, it requires storage under inert atmosphere to prevent moisture-induced hydrolysis of the ethoxy groups. Suitable for research and industrial applications in nanotechnology, coatings, and electronic materials.

Properties

• CAS Number: 7003-80-7
• Complexity: 191
• IUPAC Name: 4-triethoxysilylaniline
• InChI: InChI=1S/C12H21NO3Si/c1-4-14-17(15-5-2,16-6-3)12-9-7-11(13)8-10-12/h7-10H,4-6,13H2,1-3H3
• InChI Key: TVTRDGVFIXILMY-UHFFFAOYSA-N
• Exact Mass: 255.12907007
• Molecular Formula: C12H21NO3Si
• Molecular Weight: 255.38
• SMILES: CCO[Si](C1=CC=C(C=C1)N)(OCC)OCC
• Topological: 53.7
• Monoisotopic Mass: 255.12907007
• Synonyms: 4-triethoxysilylaniline, 7003-80-7, 4-(triethoxysilyl)aniline, p-aminophenyltriethoxysilane, Benzenamine, 4-(triethoxysilyl)-, 4-aminophenyltriethoxysilane, SCHEMBL483106, DTXSID40431233, MFCD00054708, AKOS015916735, DB-379972, G68888

Application

4-Triethoxysilylaniline serves as a critical surface modifier in glass fiber reinforcements for epoxy composites, significantly improving interfacial adhesion. In microelectronics, it functions as a silane coupling agent for dielectric layers and semiconductor packaging materials. The compound is also employed in the development of biosensors through its amine group’s ability to immobilize biomolecules on silica-based substrates.

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