Overview
1H,1H,2H,2H-Perfluorooctyltriethoxysilane is a fluorinated organosilane compound known for its ability to modify surfaces to repel water, oil, and other contaminants. It is widely used in industries where surface durability and resistance are critical. The compound reacts with hydroxyl groups on surfaces, forming a stable, hydrophobic layer. This makes it a popular choice for applications ranging from textiles to electronics. Its versatility stems from the combination of a perfluorinated carbon chain and a reactive silane group. The former provides repellency, while the latter ensures strong adhesion to substrates. Manufacturers value it for its long-lasting performance and compatibility with various materials.
Physical and Chemical Properties
This silane is a colorless to pale yellow liquid with a density of approximately 1.42 g/cm³. It is soluble in common organic solvents but reacts with water, leading to hydrolysis. The compound’s boiling point ranges between 220-230°C, and it exhibits low volatility under standard conditions. Key chemical properties include its ability to form covalent bonds with surfaces containing hydroxyl groups, such as glass, metals, and ceramics. The perfluorinated chain provides exceptional resistance to water, oils, and chemicals, making it ideal for harsh environments. Its stability under UV exposure further enhances its utility in outdoor applications.
Main Applications
1H,1H,2H,2H-Perfluorooctyltriethoxysilane is extensively used in textile treatment to create water- and stain-resistant fabrics. It is also applied in coatings for electronics to protect against moisture and corrosion. In the construction industry, it is used to treat glass and concrete surfaces for easier maintenance and longevity. Another significant application is in the manufacturing of medical devices, where its repellent properties prevent biofouling. The electronics industry utilizes it to enhance the performance of printed circuit boards and other components by reducing surface contamination.
Safety and Storage
Proper handling of this silane requires adequate ventilation to avoid inhalation of vapors. Direct contact with skin or eyes should be avoided, and personal protective equipment (PPE) such as gloves and goggles is recommended. In case of spills, absorb with inert material and dispose of according to local regulations. Storage conditions should be cool and dry, with containers tightly sealed to prevent moisture ingress. The compound is sensitive to hydrolysis, so exposure to humid environments must be minimized. Shelf life is typically 12-24 months when stored correctly.
B2B Procurement Guide
When procuring 1H,1H,2H,2H-Perfluorooctyltriethoxysilane, buyers should confirm the CAS number (101947-16-4) to ensure product authenticity. Purity levels, typically 95-98%, should align with application requirements. Bulk purchases may reduce costs, but storage capacity and shelf life must be considered. Reliable suppliers often provide technical data sheets and certificates of analysis. Buyers should also inquire about packaging options, such as amber glass bottles or sealed drums, to maintain product integrity during transit and storage. Lead times and MOQs (Minimum Order Quantities) vary by supplier.
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