3-(Triethoxysilyl)propyl isocyanate
3-(Triethoxysilyl)propyl isocyanate (CAS: 24801-88-5) is an organosilicon compound with the linear formula (C2H5O)3Si(CH2)3NCO and a molecular weight of 247.36 g/mol. This chemical serves as a versatile coupling agent and surface modifier. Its dual functionality, featuring a reactive isocyanate group and hydrolysable ethoxysilyl groups, makes it valuable in materials science, micro/nanoelectronics, and chemical synthesis for applications requiring tailored surface properties and robust bonding.
- IUPAC
- (3-Isocyanatopropyl)triethoxysilane,Triethoxy(3-isocyanatopropyl)silane
- Synonyms
- Triethoxy(3-isocyanatopropyl)silane(3-Isocyanatopropyl)triethoxysilane
Surface Modification and Functionalisation
This compound is utilised to impart specific surface characteristics to inorganic substrates like glass, silica, and metals. The ethoxysilyl groups form stable bonds with the substrate surface, while the isocyanate group remains available for further reactions with organic molecules or polymers, enabling enhanced adhesion and tailored surface properties.
Adhesion Promotion
It functions as an effective adhesion promoter between organic polymers and inorganic materials in composite formulations. By creating covalent linkages, it improves the interfacial strength and durability of the resulting materials, finding use in coatings, adhesives, and sealants.
Crosslinking Agent
The isocyanate functionality allows 3-(Triethoxysilyl)propyl isocyanate to act as a crosslinking agent for polymers containing active hydrogen groups, such as hydroxyl or amine functionalities. This leads to the formation of three-dimensional networks, enhancing mechanical properties and chemical resistance.
Materials Science Research
In research settings, it is employed for developing novel self-assembly monolayers (SAMs) and functionalised nanoparticles. Its ability to anchor to surfaces and present a reactive isocyanate moiety facilitates the construction of complex molecular architectures and advanced materials.
| Molecular weight | 247.36 |
|---|---|
| Linear formula | (C2H5O)3Si(CH2)3NCO |
| Assay | 95% |
| Boiling point | 283 °C(lit.) |
| Density | 0.999 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.42(lit.) |
| Storage temperature | 2-8°C |
Hazard statements
- H302Harmful if swallowed
- H314Causes severe skin burns and eye damage
- H330Fatal if inhaled
- H334May cause allergy or asthma symptoms if inhaled
Precautionary statements
- P260Do not breathe dust, fume, gas, mist, vapours or spray
- P280Wear protective gloves, clothing and eye/face protection
- P284Wear respiratory protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 77 °C / 170.6 °F |
| Transport (UN / ADR) | UN 3390 8(6.1) / PGI |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T+ |
| Risk statements (R) | 21/22-26-34-42 |
| Safety statements (S) | 23-26-28-36/37/39-45 |
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 3-(Triethoxysilyl)propyl isocyanate used for?
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3-(Triethoxysilyl)propyl isocyanate is used for surface modification, adhesion promotion between organic and inorganic materials, and as a crosslinking agent in polymer chemistry. It is also valuable in materials science research for creating self-assembled monolayers and functionalised nanoparticles.
What are the CAS number and formula for this product?
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The CAS number is 24801-88-5 and the linear formula is (C2H5O)3Si(CH2)3NCO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-(Triethoxysilyl)propyl isocyanate with an assay of 95%. This product is provided for research and industrial use and is not represented as USP, BP, EP, or pharmacopoeia grade.
How should 3-(Triethoxysilyl)propyl isocyanate be handled safely?
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This compound is dangerous and requires strict safety protocols. It is corrosive and can cause severe skin burns and eye damage (H314). Inhalation of vapours or mists can be fatal (H330), and it may cause respiratory irritation or allergic reactions (H334). Handling requires full protective equipment including gloves, eye protection, and a suitable respirator. It is harmful if swallowed or in contact with skin (H302 + H312). Always consult the Safety Data Sheet before use.
How is this chemical packed, shipped, and exported?
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3-(Triethoxysilyl)propyl isocyanate is carefully packed according to international shipping regulations for hazardous materials. Tech Serve Solutions has extensive experience in exporting chemicals globally, ensuring compliance with all relevant transport and customs requirements.
How can I request a quote or sample?
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To request a quote or a sample of 3-(Triethoxysilyl)propyl isocyanate, please contact our sales team through the website or by telephone. Provide your contact details and the quantity required.
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