N-[3-(Trimethoxysilyl)propyl]-N′-(4-vinylbenzyl)ethylenediamine hydrochloride solution
N-[3-(Trimethoxysilyl)propyl]-N′-(4-vinylbenzyl)ethylenediamine hydrochloride solution (CAS: 33401-49-9) is a versatile organosilane with the linear formula H₂C=CHC₆H₄CH₂NHCH₂CH₂NH(CH₂)₃Si(OCH₃)₃·HCl and a molecular weight of 374.98 g/mol. Supplied as a 40 wt. % solution in methanol, this compound functions as a hybrid monomer, bridging organic and inorganic chemistries. It is valuable in materials science for surface modification, polymer synthesis, and the development of self-assembled monolayers.
![N-[3-(Trimethoxysilyl)propyl]-N′-(4-vinylbenzyl)ethylenediamine hydrochloride solution (H2C=CHC6H4CH2NHCH2CH2NH(CH2)3Si(OCH3)3·HCl) — chemical structure, CAS 33401-49-9; Materials Science, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F33401-49-9.png&w=3840&q=75)
Surface Modification
This silane acts as a coupling agent to chemically bond organic polymers to inorganic substrates, enhancing adhesion and material properties. It is particularly useful for modifying surfaces in microelectronics and advanced materials applications.
Monomer for Polymer Synthesis
The presence of both a vinyl group and a reactive silane moiety allows this compound to be incorporated into various polymer architectures. It can be used in copolymerization or as a functional additive to create advanced polymers with tailored properties.
Self-Assembly and Thin Films
The molecule can form self-assembled monolayers (SAMs) on various substrates due to its silane functionality. The vinylbenzyl group can then be further functionalised or polymerised, enabling applications in nanoelectronics and surface patterning.
Adhesion Promotion
Its bifunctional nature makes it an effective adhesion promoter between dissimilar materials, such as glass, silica, or metal oxides, and organic coatings or polymers, improving the durability and performance of composite materials.
| Molecular weight | 374.98 |
|---|---|
| Linear formula | H2C=CHC6H4CH2NHCH2CH2NH(CH2)3Si(OCH3)3·HCl |
| Density | 0.905 g/mL at 25 °C |
| Refractive index | n20/D 1.402 |
| Concentration | 40 wt. % in methanol |



Hazard statements
- H225Highly flammable liquid and vapour
- H301Toxic if swallowed
- H370Causes damage to organs
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P260Do not breathe dust, fume, gas, mist, vapours or spray
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P311Call a POISON CENTER or doctor
| Flash point | 13 °C / 55.4 °F |
|---|---|
| Transport (UN / ADR) | UN 1230 3/PG 2 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,T |
| Risk statements (R) | 11-23/24/25-39/23/24/25 |
| Safety statements (S) | 16-36/37-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is N-[3-(Trimethoxysilyl)propyl]-N′-(4-vinylbenzyl)ethylenediamine hydrochloride solution used for?
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This compound is primarily used in materials science for surface modification, as a monomer in polymer synthesis, for creating self-assembled monolayers, and as an adhesion promoter between inorganic and organic materials.
What are the CAS number and formula for this chemical?
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The CAS number is 33401-49-9, and its linear formula is H₂C=CHC₆H₄CH₂NHCH₂CH₂NH(CH₂)₃Si(OCH₃)₃·HCl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product as a 40 wt. % solution in methanol. TSS does not represent this product as USP, BP, or EP grade.
How should N-[3-(Trimethoxysilyl)propyl]-N′-(4-vinylbenzyl)ethylenediamine hydrochloride solution be handled?
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This product is highly flammable and toxic. It poses significant health risks including acute toxicity (oral, dermal, inhalation) and may cause damage to organs. Handle with extreme care in a well-ventilated area, wearing appropriate personal protective equipment, including gloves, eye protection, and respiratory protection. Keep away from heat, sparks, and open flames.
How is this product packed, shipped, and exported?
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This product is packed and shipped in compliance with relevant transport regulations, including UN 1230 (Methanol), Hazard Class 3, Packing Group II. We offer global export services for research and industrial applications.
How can I request a sample or quote?
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Please contact our sales team via the website or direct email to request a sample or obtain a quotation for N-[3-(Trimethoxysilyl)propyl]-N′-(4-vinylbenzyl)ethylenediamine hydrochloride solution.
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