Perfluorooctyl Triethoxysilane CAS 51851-37-7
Factory wholesale Perfluorooctyl Triethoxysilane CAS 51851-37-7
- Appearance:Liquid
- Purity:99.8%
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Name: Perfluorooctyl Triethoxysilane
CAS: 51851-37-7
MOQ: 1KG
Directory Guidance on Perfluorooctyl Triethoxysilane
Chemical Structure
Basic Info:
| Melting point | <-38°C |
| Boiling point | 95 °C |
| density | 1.3299 g/mL at 25 °C |
| vapor pressure | 0.007-7910Pa at 25℃ |
| refractive index | 1.345 |
| Fp | 97°C |
Product Introduction:
Perfluorooctyl Triethoxysilane is an organosilicon compound with unique properties. Its chemical formula is C₁₄H₁₉F₁₃O₃Si and its molecular weight is about 510.36. It is a colorless and transparent liquid. Because its molecular structure contains both low surface energy fluoroalkyl chains and hydrolyzable siloxane groups, it has excellent hydrophobicity, oleophobicity and chemical stability, and is widely used in the field of material surface modification and protection.
From the chemical structure point of view, the fluoroalkyl chain of Perfluorooctyl Triethoxysilane gives it extremely low surface energy, which enables it to significantly reduce the surface tension of the material, thereby showing excellent hydrophobic and oleophobic properties. At the same time, the siloxane group can chemically bond with functional groups such as hydroxyl and carboxyl in a variety of inorganic and organic substrates to form a stable surface coating.
In terms of physical properties, the density of Perfluorooctyl Triethoxysilane is 1.3299 g/mL (25°C), the melting point is below -38°C, the boiling point is 95°C, and the flash point is 97°C. It is miscible with organic solvents such as alcohols, aromatic hydrocarbons, and aliphatic hydrocarbons, but has extremely low solubility in water. In addition, it has good heat resistance and weather resistance, a refractive index of 1.345, and an appearance of a lubricating liquid, which makes it perform well in a variety of application scenarios.
The application range of Perfluorooctyl Triethoxysilane is very wide. It can be used for surface coating treatment of various materials such as glass, ceramics, metals, and wood, giving these materials excellent anti-fouling ability and durability. In the field of construction, it can be used for waterproof and anti-weathering treatment of concrete products to extend the service life of the material; it can also be used for the protection of cultural relics and masonry to prevent them from being eroded by the natural environment. In addition, it is also used for hydrophobic finishing of natural fibers and the synthesis of fluorosilicone resins.
Nature and Specifications:
| Item | Specification |
| Product Name | Perfluorooctyl Triethoxysilane |
| CAS No. | 51851-37-7 |
| Appearance | Liquid |
| Shelf Life | 2 years |
| Packing | As your requirements |
| solubility | Miscible with alcohol, aromatic and aliphatic hydrocarbons. |
| form | Oil |
| color | Colourless |
| Specific Gravity | 1.64 |
| Water Solubility | 6.4-1000000000000ng/L at 20℃ |
Product service:
- Certificate Of Analysis (COA)
- Material Safety Data Sheet (MSDS)
- Route of synthesis (ROS)
- Method of Aanlysis (MOA)
- Nuclear Magnetic Resonance (NMR)
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- Factory audit
In the field of surface treatment, Perfluorooctyl Triethoxysilane has been widely used in the textile, building materials and electronics industries as a high-performance coating additive. For example, high-end outdoor clothing can increase the contact angle of the fabric to more than 140° by impregnating it with a 0.5-2% solution, achieving a lasting waterproof and oil-proof function. In the construction field, it is used for concrete protection, and the water absorption rate of the treated substrate can be reduced to less than 0.1%, significantly inhibiting freeze-thaw damage and salt erosion. In microelectronics manufacturing, Perfluorooctyl Triethoxysilane is used as an anti-fingerprint coating, forming a nano-scale film on the surface of glass or metal by vapor deposition, reducing the surface friction coefficient and improving anti-fouling ability.
The automotive industry is another important application scenario for this compound. After the lithium battery diaphragm of new energy vehicles is modified with Perfluorooctyl Triethoxysilane, the electrolyte infiltration speed is increased by 30%, and the flame retardant performance is enhanced; after the automotive glass uses a hydrophobic coating containing this product, the frequency of wiper use is reduced by 60%, and the safety of night driving is significantly improved. In addition, its application in anti-fog coatings for precision instruments has also made breakthroughs. The treated optical lens can remain fog-free for 8 hours in an environment with a humidity of 95%.
In recent years, the medical device industry has increased its R&D investment in Perfluorooctyl Triethoxysilane. After the surface of cardiovascular stents is coated with it, the amount of protein adsorption is reduced by 75%, effectively reducing the risk of thrombosis; after surgical instruments are modified with it, the efficiency of biological fouling removal is increased by 50%, and the sterilization cycle is shortened by 40%. Studies have also shown that the fluorocarbon chain of Perfluorooctyl Triethoxysilane has the effect of inhibiting the formation of bacterial biofilms, which provides new ideas for the development of products such as antibacterial catheters.
In the field of industrial corrosion protection, Perfluorooctyl Triethoxysilane has unique advantages in the protection of oil and gas pipelines. Compared with traditional epoxy resin coatings, the salt spray resistance time of the composite coating with 1% of it is extended from 500 hours to 3000 hours, and the maintenance cycle is extended from 2 years to 8 years. In marine engineering, the super-hydrophobic coating formed by its combination with polyurethane can control the corrosion rate of steel structures to below 0.002 mm/year, providing long-term protection for deep-sea platforms.
The advantage of chemical stability is the key feature that distinguishes Perfluorooctyl Triethoxysilane from other silanes. The dissociation energy of the C-F bond in its molecule is 485 kJ/mol, which is much higher than that of the C-H bond (413 kJ/mol) and the C-Cl bond (339 kJ/mol), giving the material excellent weather resistance and chemical corrosion resistance. Test data show that after immersion in a 10% sulfuric acid solution for 30 days, the contact angle of its modified surface only decreases by 3°, while the surface treated with ordinary silane decreases by 25°. This stability makes it possible to use it in harsh environments.
Multifunctional integration capability is a notable feature of this product. By adjusting the treatment concentration (0.1-5% range) and process parameters (such as hydrolysis time and curing temperature), Perfluorooctyl Triethoxysilane can simultaneously achieve multiple functions such as hydrophobicity (contact angle>110°), oleophobicity (olive oil contact angle>90°) and antistatic (surface resistance<1×10⁹ Ω). For example, in the field of semiconductor packaging, a single treatment of this product can meet the three core requirements of moisture resistance (water vapor transmission rate <0.1 g/m²/day), insulation (dielectric strength>30 kV/mm) and anti-fouling (90% reduction in particle attachment).
The breakthrough in environmental performance is reflected in its low VOC (volatile organic compound content <50 g/L) and bioaccumulation index (BCF<100). The EU REACH regulation assessment shows that the PBT (persistence, bioaccumulation, toxicity) characteristics of Perfluorooctyl Triethoxysilane are all below the limit, and its hydrolysis products are harmless silicic acid and fluoroethanol. Compared with traditional perfluorooctanoic acid (PFOA) products, its ecotoxicity is reduced by 85%, and it does not participate in the biochain enrichment process.
In terms of long-term economic benefits, although the treatment cost of Perfluorooctyl Triethoxysilane is 20-30% higher than that of conventional silane, its maintenance cycle is extended by 3-5 times. Taking wind turbine blade protection as an example, traditional coatings need maintenance once every two years, with each cost of about $150/m², while Perfluorooctyl Triethoxysilane coatings can be maintenance-free for eight years, reducing the cost of the entire life cycle by 60%. In the textile industry, workwear treated with Perfluorooctyl Triethoxysilane still maintains a waterproof level of 4 after 50 washes, which is 30 more standard washes than ordinary treatment agents.
The potential for technological innovation is reflected in its molecular modifiability. By introducing functional groups such as amino and epoxy groups, Perfluorooctyl Triethoxysilane can be compatible with more resin systems (such as polyimide and polyetheretherketone). The latest research shows that the derivatives of this product with a fluorine content of 72% can reduce the dielectric constant of the composite material to 2.1, providing key materials for the development of 5G high-frequency substrates. In addition, the application of nano-scale Perfluorooctyl Triethoxysilane self-assembled films (thickness <10 nm) in the field of flexible displays has entered the pilot stage, and is expected to promote the bending resistance of foldable devices by 300%.
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Related References:
chemicalbook-Perfluorooctyl Triethoxysilane
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