n-Propyltriethoxysilane
n-Propyltriethoxysilane (CAS 2550-02-9) is an organosilicon compound with the linear formula (C2H5O)3SiCH2CH2CH3 and a molecular weight of 206.35 g/mol. This clear liquid serves as a versatile intermediate in chemical synthesis and finds application in materials science. Its properties make it useful for surface modification and as a component in the formulation of advanced materials, particularly in microelectronics and self-assembly processes.
- Synonyms
- PropyltriethoxysilaneTriethoxypropylsilane(3-Hydroxypropyl)triethoxysilane

Surface Modification
n-Propyltriethoxysilane is employed to modify the surface properties of various substrates. It can form self-assembled monolayers, altering hydrophobicity, adhesion, and reactivity for tailored applications.
Materials Science
This silane is a valuable building block in materials science for creating novel polymers and composite materials. It contributes to enhanced material performance and durability.
Micro/Nanoelectronics
Its utility extends to the micro/nanoelectronics industry, where it can be used in processes such as contact printing and in the formulation of specialized coatings and encapsulants.
Chemical Synthesis
As an organosilicon reagent, n-Propyltriethoxysilane is used in organic synthesis for introducing propylsilyl groups into molecules or as a precursor in the synthesis of more complex organosilicon compounds.
| Molecular weight | 206.35 |
|---|---|
| Linear formula | (C2H5O)3SiCH2CH2CH3 |
| Assay | ≥98% |
| Form | liquid |
| Boiling point | 179-180 °C(lit.) |
| Density | 0.892 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.396(lit.) |


Hazard statements
- H226Flammable liquid and vapour
- 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 | 57 °C / 134.6 °F |
| Transport (UN / ADR) | UN 1993C 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| 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 n-Propyltriethoxysilane used for?
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n-Propyltriethoxysilane is used for surface modification, in materials science, micro/nanoelectronics, and as a reagent in chemical synthesis.
What is the CAS number and formula for n-Propyltriethoxysilane?
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The CAS number is 2550-02-9 and its linear formula is (C2H5O)3SiCH2CH2CH3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies n-Propyltriethoxysilane with an assay of ≥98%. This product is intended for research and industrial use and is not represented as USP, BP, EP, or other pharmacopoeia grades.
How should n-Propyltriethoxysilane be handled safely?
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n-Propyltriethoxysilane is a flammable liquid and vapour (H226) and can cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Handle in a well-ventilated area, wearing appropriate personal protective equipment including eyeshields and gloves. Avoid contact with eyes and skin, and avoid breathing vapours.
How is n-Propyltriethoxysilane packed and exported?
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n-Propyltriethoxysilane is typically supplied in various sizes suitable for laboratory and industrial use. TSS exports chemicals globally, adhering to international shipping regulations for hazardous materials like UN 1993, Class 3, PG III.
How can I request a quote or sample for n-Propyltriethoxysilane?
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To request a quote or sample, please contact the TSS sales team through our website or by phone, providing your specific requirements.
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