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https://www.cfmats.com/functional-silanes/long-chain-silanes/

Co-Formula has successfully synthesized a series of long-chain functional silanes including octyl(C8), dodecyl(C12) and octadecyl(C18) silanes. Long-chain functional silanes have superior hydrophobicity and they are mostly used as water scavengers. They can also act as surface modifiers and reducing agents, especially for the treatment of micro and nanoparticles or mineral fillers and pigments.

Functions & Applications of Long-chain Silanes
Long-chain organofunctional silanes at Co-Formula have gained great reputation in construction industry. Such long-chain silane can be used in the formulation of water repellent products when diluted with an appropriate solvent. Under proper application, the formulated product will penetrate and provide water repellency by chemically reacting with the cementitious substrate. Treated substrates are hydrophobic and retain their original appearance.CFS-751, Octyltriethoxysilane with Cas No. 2943-75-1 is the most common hydrophobing agent in the market. Acting as a surface modifier and a protecting agent, it can generate hydrophobicity on concrete, ceramic and glasses. Better silane waterproofing property can be achieved with the presence of CFS-751.

Main Long-chain Silanes
Co-Formula has successfully developed several long-chain organofunctional silanes which are listed in the following table.
Trade CodeChemical NameCAS No.Molecular Formula
CFS-088Octadecyldimethylchlorosilane18643-08-8C20H43ClSi
CFS-317Dodecyldimethylchlorosilane66604-31-7C14H30ClSi
CFS-840Octyldimethylchlorosilane18162-84-0C10H23ClSi
CFS-049Octadecyltrichlorosilane112-04-9C18H37Cl3Si
CFS-4724Dodecyltrichlorosilane4484-72-4C12H25Cl3Si
CFS-3669Octyltrichlorosilane5283-66-9C8H17Cl3Si

Among these silanes, CFS-088, Octadecyldimethylchlorosilane with Cas No. 18643-08-8 is warmly welcomed during the preparation of reversed-phase C18 chromatographic columns (ODS). CFS-088 has been synthesized for micro and nanoparticles derivatization, silica modification and molecular monolayers generation. Silica treated with C18 based on ODS column can enhance durability and bring excellent performance.

Sales Status of Long-chain Silanes
As a reliable functional silanes manufacturer in China, Co-Formula can offer a variety of silane coupling agent as well as specialty silanes with distinctive features. If you want to get more details about long-chain silanes or other silane coupling agents, please feel free to contact Co-Formula team.