Trimethoxy(octadecyl)silane
Trimethoxy(octadecyl)silane (CAS: 3069-42-9; Formula: CH3(CH2)17Si(OCH3)3; MW: 374.67) is a versatile organosilicon compound. This technical grade liquid, with an assay of 90%, is primarily utilized in materials science and chemical synthesis. Its properties make it valuable for modifying surfaces, particularly in applications related to self-assembly and micro/nanoelectronics, offering controlled hydrophobicity and improved material interfaces.
- IUPAC
- Octadecyltrimethoxysilane
Surface Modification
Trimethoxy(octadecyl)silane is widely employed for modifying surfaces due to its long alkyl chain and reactive methoxy groups. It can create hydrophobic monolayers on various substrates, altering surface energy and wettability for specific applications.
Self-Assembly and Nanotechnology
This compound serves as a key component in the fabrication of ordered molecular layers via self-assembly processes. It is instrumental in micro/nanoelectronics for creating defined interfaces and functionalizing nanoparticles.
Materials Science
In materials science, it is used to enhance the properties of polymers, composites, and coatings. Its ability to covalently bond to inorganic surfaces and impart organic characteristics makes it useful for improving material performance and compatibility.
Chemical Synthesis
As an organometallic reagent, Trimethoxy(octadecyl)silane can be utilized in various organic synthesis pathways, particularly where the introduction of a long alkyl silane moiety is required.
| Molecular weight | 374.67 |
|---|---|
| Linear formula | CH3(CH2)17Si(OCH3)3 |
| Assay | 90% |
| Grade | technical grade |
| Form | liquid |
| Density | 0.883 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.439(lit.) |
| Melting point | 16-17 °C(lit.) |
Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 140 °C / 284 °F |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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 Trimethoxy(octadecyl)silane used for?
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Trimethoxy(octadecyl)silane is used for surface modification, in self-assembly processes for nanotechnology and micro/nanoelectronics, and in materials science for enhancing material properties. It also finds applications in chemical synthesis.
What is the CAS number and formula for Trimethoxy(octadecyl)silane?
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The CAS number is 3069-42-9 and the chemical formula is CH3(CH2)17Si(OCH3)3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Trimethoxy(octadecyl)silane in a technical grade with an assay of approximately 90%. We do not represent this product as USP, BP, or EP grade.
What are the safety and handling precautions for Trimethoxy(octadecyl)silane?
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This compound is classified as a Warning with hazards including skin irritation (H315), serious eye irritation (H319), and respiratory tract irritation (H335). Appropriate personal protective equipment, such as eyeshields, gloves, and a suitable respirator, should be used when handling. Ensure good ventilation and avoid inhalation of vapours.
How is Trimethoxy(octadecyl)silane packed, shipped, and exported?
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Trimethoxy(octadecyl)silane is supplied as a liquid and is carefully packaged to meet international shipping regulations. Tech Serve Solutions is experienced in exporting chemicals globally.
How can I request a sample or quote for Trimethoxy(octadecyl)silane?
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To request a sample or a quote, please contact our sales team through the website or by phone. We will be happy to assist you with your inquiry.
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