Cyclopentyltriethoxysilane
Cyclopentyltriethoxysilane (CAS: 154733-91-2) is an organosilicon compound with the linear formula (C2H5O)3SiC5H9 and a molecular weight of 232.39. It serves as a valuable building block in chemical synthesis, particularly within organometallic and organosilicon chemistry. This compound is primarily utilised in research and development settings for the creation of advanced materials and specialised chemical intermediates.

Chemical Synthesis Intermediate
Cyclopentyltriethoxysilane functions as a versatile intermediate in organic and organometallic synthesis. Its reactive ethoxysilane groups allow for various chemical transformations, facilitating the construction of complex molecules.
Organosilicon Chemistry
This compound is employed in studies and applications involving organosilicon compounds. It can be used to introduce the cyclopentylsilane moiety into larger structures or polymers, influencing material properties.
Material Science Research
Researchers may utilise Cyclopentyltriethoxysilane in the development of novel materials. Its unique structure can impart specific characteristics to polymers, coatings, or other advanced materials.
| Molecular weight | 232.39 |
|---|---|
| Linear formula | (C2H5O)3SiC5H9 |
| Assay | 98% |
| Boiling point | 218-219 °C(lit.) |
| Density | 0.921 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.4240(lit.) |
| Protective equipment | Eyeshields, Gloves, half-mask respirator (EU), half-mask respirator (US), multi-purpose combination respirator cartridge (US) |
|---|---|
| Flash point | 87 °C / 188.6 °F |
| Transport (UN / ADR) | NA 1993 / PGIII |
| Water hazard class (WGK, DE) | 3 |
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 Cyclopentyltriethoxysilane used for?
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Cyclopentyltriethoxysilane is primarily used as an intermediate in chemical synthesis, particularly in organometallic and organosilicon chemistry, and in material science research.
What is the CAS number and formula for Cyclopentyltriethoxysilane?
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The CAS number is 154733-91-2 and the linear formula is (C2H5O)3SiC5H9.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Cyclopentyltriethoxysilane with an assay of 98%. We do not represent this product as USP, BP, or EP grade.
How should Cyclopentyltriethoxysilane be handled safely?
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Safe handling requires appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator, especially given its flammability (flash point 87°C).
How is Cyclopentyltriethoxysilane shipped?
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Cyclopentyltriethoxysilane is shipped according to regulations, for example, UN 1993 / PGIII, and is available for export globally by Tech Serve Solutions.
How can I request a quote or sample?
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To request a quote or sample of Cyclopentyltriethoxysilane, please contact our sales team through the website or by phone.
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