n-Propyltriethoxysilane
| Chemical Name: | n-Propyltriethoxysilane |
| Product Category: | Alkyl & Alkoxy Silanes | Silane Coupling Agent |
| Structural Formula: | ![]() |
| CAS No.: | 2550-02-9 |
| EINECS: | 219-842-7 |
| Molecular Formula: | C9H22O3Si |
| Molecular Weight: | 206.3547 |
n-Propyltriethoxysilane Description
n-Propyltriethoxysilane (CAS 2550-02-9) is a multifunctional silane used to form silica coatings, reduce stickiness, and improve rubber compound processing, especially in controlling silica fillers.
Main Applications:
- Rubber Industry – Used in tires, shoemaking, and mechanical rubber for better processing and performance.
- Silica Coatings – Creates sedimentary silica coatings for improved durability.
- Process Improvement – Enhances silica filler dispersion in rubber.
Safety Info:
Slightly hazardous to water; avoid large quantities contacting water sources.
| Chemical Name | n-Propyltriethoxysilane |
| Synonyms | Triethoxypropylsilane; 1-triethoxysilylpropane; n-Propyltriethoxysilane; Silane,triethoxypropyl; Propyltriethoxysilane; |
| Relative density | 0.889g/cm3 |
| Density (g/mL,,20℃) | 0.8916 |
| Boiling point | 180℃ |
| Refractive index (n20/D) | 1.396 |
| Flash point | 57°C |
| Appearance | Colorless transparent liquid. |
| Dissolvability | Be soluble in various organic solvents. |
| Uses | n-Propyltrimethoxysilane, also called Trimethoxypropylsilane, is an alkylalkoxysilane. It is a colorless, low viscosity liquid. It has an n-propyl organic group and a trimethoxysilyl inorganic group. It provides hydrophobic surface treatment.soluble in a variety of organic solvents. |
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n-Propyltriethoxysilane: Guide
N-Propyltriethoxysilane (CAS No. 2550-02-9), also known as Triethoxypropylsilane, is a colorless liquid used primarily as a filler for controlling precipitated silica. It is widely applied in industries like tires, shoes, and rubber.
Applications:
- Sol-Gel Systems: Essential for sol-gel processes.
- Hydrophobic Surface Treatment: Improves water-repellent properties of inorganic powders and fillers.
- Polyolefin Ziegler Catalyst: Used in the production of polyolefins.
- Coupling Agent: Enhances adhesion in the tire, shoe, and rubber industries.
This silane compound plays a key role in improving material performance across various applications.












