Long-chain Silanes
Long-chain Silanes
Silico has successfully developed a series of long-chain silanes, including octyl (C8), dodecyl (C12), and octadecyl (C18) silanes. These long-chain silanes exhibit exceptional hydrophobic properties, making them highly effective as water scavengers. Additionally, they function as surface modifiers and reducing agents, enhancing the performance of micro- and nanoparticles, mineral fillers, and pigments. Their advanced properties contribute to improved dispersion, stability, and surface treatment efficiency in various industrial applications.
| CAS NO. | Product Name |
| 5283-66-9 | Octyltrichlorosilane |
| 3069-40-7 | Octyltrimethoxysilane |
| 2943-75-1 | Octyltriethoxysilane |
| 18162-84-0 | Octyldimethylchlorosilane |
| 4484-72-4 | Dodecyltrichlorosilane |
| 3069-21-4 | Dodecyltrimethoxysilane |
| 18536-91-9 | Dodecyltriethoxysilane |
| 66604-31-7 | Dodecyldimethylchlorosilane |
| 16415-12-6 | Hexadecyltrimethoxysilane |
| 16415-13-7 | Hexadecyltriethoxysilane |
| 62635-26-1 | Hexadecyldimethylchlorosilane |
| 112-04-9 | Octadecyltrichlorosilane |
| 3069-42-9 | Octadecyltrimethoxysilane |
| 7399-00-0 | Octadecyltriethoxysilane |
| 18643-08-8 | Octadecyldimethylchlorosilane |
Octyltrichlorosilane
Octyltrimethoxysilane
Octyltriethoxysilane
Octyldimethylchlorosilane
Dodecyltrichlorosilane
Dodecyltrimethoxysilane
Dodecyltriethoxysilane
Dodecyldi
methylchlorosilane
Hexadecyltrimethoxysilane
Hexadecyltrimethoxysilane
Hexadecyldi
methylchlorosilane
Octadecyltrichlorosilane
Octadecyltrimethoxysilane
Octadecyltriethoxysilane
Octadecyldi
methylchlorosilane
Functions & Applications of Long-chain Silanes
Silico’s long-chain silanes are highly valued in the construction industry for their excellent water-repellent properties. These silanes are key components in hydrophobic treatments, penetrating cementitious substrates and forming a durable chemical bond that enhances water resistance while maintaining the original appearance.
Octyltriethoxysilane (CAS No. 2943-75-1) is a widely used hydrophobing agent, acting as both a surface modifier and protective agent. It significantly improves the hydrophobicity of concrete, ceramics, and glass, making it essential for advanced waterproofing solutions.
Main Long-chain Silanes
Silico has successfully developed a range of long-chain organofunctional silanes, widely used in advanced surface treatment applications. The following are key products:
| Chemical Name | CAS No. | Molecular Formula |
|---|---|---|
| Octadecyldimethylchlorosilane | 18643-08-8 | C20H43ClSi |
| Dodecyldimethylchlorosilane | 66604-31-7 | C14H30ClSi |
| Octyldimethylchlorosilane | 18162-84-0 | C10H23ClSi |
| Octadecyltrichlorosilane | 112-04-9 | C18H37Cl3Si |
| Dodecyltrichlorosilane | 4484-72-4 | C12H25Cl3Si |
| Octyltrichlorosilane | 5283-66-9 | C8H17Cl3Si |
mong these, Octadecyldimethylchlorosilane (CAS No. 18643-08-8) is widely used in the preparation of reversed-phase C18 chromatographic columns (ODS). It plays a key role in micro- and nanoparticle derivatization, silica modification, and molecular monolayer formation. Silica treated with C18-based ODS columns offers enhanced durability and superior chromatographic performance, making it a preferred choice in analytical and industrial applications.
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How to Select Long-chain Silanes？
Selecting the right long-chain silane involves considering key factors:
Functional Group Compatibility: Choose a silane whose functional group matches your substrate and application needs.
Alkoxy Group Structure: The type of alkoxy group (e.g., methoxy or ethoxy) affects hydrolysis rates and bonding strength.
Application Method: Decide on the best method, such as aqueous alcohol solutions, for uniform silane coating.
Performance Requirements: Choose a silane based on desired properties like hydrophobicity or improved adhesion.
By evaluating these factors, you can select the best long-chain silane for your needs.
