1H,1H,2H,2H-Perfluorooctyltriethoxysilane | CAS 51851-37-7 | Fluorosilane Coupling Agent | China Manufacturer
Product Name: 1H,1H,2H,2H-Perfluorooctyltriethoxysilane
Synonym: Perfluorooctyltriethoxysilane, Fluoroalkylsilane, Fluorosilane Coupling Agent
CAS Number: 51851-37-7
Molecular Formula: C₁₄H₁₉F₁₃O₃Si
Molecular Weight: 510.36 g/mol
Purity: ≥ 97%
Appearance: Colorless to light yellow liquid
Boiling Point: 95 °C
Density (25°C): 1.3299 g/mL
Refractive Index: 1.345
Flash Point: 97 °C
Packaging: 1g / 5g / 25g / 100g / 1kg / 25kg (custom packaging available)
Lead Time: 3-7 business days from stock
Applications: Surface treatment, glass coating, nano-modification, hydrophobic coatings
Free Sample: Available upon request for R&D evaluation
Worldwide Delivery: DHL / FedEx / air / sea
Made in China | COA & SDS provided with every shipment
REACH Annex XVII Entry 73 — Professional Use
- Worldwide Delivery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
1H,1H,2H,2H-Perfluorooctyltriethoxysilane CAS 51851-37-7 | Fluorosilane Coupling Agent for Hydrophobic Coatings | China Manufacturer
Product Overview: 1H,1H,2H,2H-Perfluorooctyltriethoxysilane (CAS 51851-37-7)
1H,1H,2H,2H-Perfluorooctyltriethoxysilane (CAS 51851-37-7), also known as POTS or perfluorooctyltriethoxysilane, is a fluorosilane coupling agent used to create low-surface-energy coatings on glass, silica, and metal oxide surfaces. Its triethoxysilyl group hydrolyzes to silanol, which reacts with surface hydroxyl groups, while the perfluoroalkyl tail provides water and oil repellency. This dual action is useful when you need durable hydrophobic and oleophobic performance, not just a temporary topical treatment.
Scheme 1. Platinum-catalyzed hydrosilylation of triethoxysilane with 1H,1H,2H,2H-perfluorooctyl alkene to produce 1H,1H,2H,2H-Perfluorooctyltriethoxysilane (CAS 51851-37-7).
Alfa Chemical produces this fluorosilane in Zhengzhou, China, with ≥97% purity by GC and batch-specific COA and SDS. It is available in R&D sample sizes and 25kg drums or IBC for scale-up. Because the product is moisture-sensitive, we recommend sealed, dry storage and immediate use after opening. Our technical team can advise on hydrolysis conditions and solvent selection for your coating system. Please note this substance is listed under REACH Annex XVII Entry 73; professional use is permitted with appropriate labelling.
For coating developers, this product is typically evaluated in dilute alcohol or fluorinated solvent systems. We can provide starting-point recommendations based on your substrate and target contact angle.
Key Features of This Fluorosilane Coupling Agent
This molecule combines two functional domains-a reactive triethoxysilyl head and an inert perfluoroalkyl tail-driving its performance across surface modification applications.
Low Surface Energy
The perfluoroalkyl tail delivers extremely low surface free energy, providing hydrophobic and oleophobic properties to treated surfaces.
Covalent Bonding
Hydrolyzed silanol groups form stable covalent bonds with hydroxyl groups on glass, silica, and metal oxide surfaces.
Thermal Stability
Stable under recommended storage and handling conditions. Moisture-sensitive; store sealed under dry conditions.
Solvent Compatibility
Miscible with alcohol, aromatic and aliphatic hydrocarbons. Suitable for solution-based coating processes.
Applications: Glass, Nano-SiO₂, ORMOCER & Anti-Corrosion Coatings
CAS 51851-37-7 is used as a surface treatment agent and active coating component across multiple industrial sectors. Each application leverages the molecule's ability to form a low-surface-energy layer on hydroxyl-bearing substrates.
🪟 Glass & Ceramic Anti-Fingerprint Coatings
Challenge: Fingerprints, water spots, and oil contamination degrade optical clarity.
Solution: Silanol groups bond with glass surface hydroxyls, forming a low-surface-energy layer.
Result: Hydrophobic, oleophobic, anti-fingerprint surface for touch screens and optical lenses.
🧫 Nano-SiO₂ / TiO₂ Surface Modification
Challenge: Nanoparticles agglomerate and show poor compatibility with organic matrices.
Solution: Fluorosilane modifies nanoparticle surfaces with perfluoroalkyl chains.
Result: Enhanced dispersion, hydrophobicity, and weatherability for self-cleaning interfaces.
⚗️ ORMOCER Coating Active Component
Challenge: Organically modified ceramic coatings need low-surface-free-energy components.
Solution: Used as active component in fluorine-modified ORMOCER formulations.
Result: Anti-adhesive against polar and non-polar substances. Suitable for anti-soiling and anti-fogging.
🔩 Metal Substrate Anti-Corrosion Treatment
Challenge: Copper, iron, and aluminum oxidize in humid or electrolyte-rich environments.
Solution: Superhydrophobic film repels aqueous electrolyte solutions from metal surfaces.
Result: Corrosion protection. Also applied to ceramic, marble, wood, and natural fibers.
Product Specifications
The following parameters represent typical values. Batch-specific COA is provided with every shipment. Contact us for custom specifications.
| Item | Specification |
|---|---|
| CAS Number | 51851-37-7 |
| Molecular Formula | C₁₄H₁₉F₁₃O₃Si |
| Molecular Weight | 510.36 g/mol |
| EINECS Number | 257-473-3 |
| Purity (GC) | ≥ 97% |
| Appearance | Colorless to light yellow liquid |
| Refractive Index | 1.345 |
| Density (25°C) | 1.3299 g/mL |
| Boiling Point | 95°C |
| Flash Point | 97°C |
| Storage Condition | Keep in dark, sealed, dry, room temperature |
| Solubility | Miscible with alcohol, aromatic and aliphatic hydrocarbons |
| Packaging | R&D samples / 1kg / 25kg drums / IBC |
⚠️ Moisture Sensitive: Handle under dry conditions. Store in sealed containers under inert atmosphere. Use immediately after opening.
Manufacturing & Quality Control
Alfa Chemical operates from Zhengzhou, China, with an annual fluorosilane production capacity of 50+ metric tons. Our manufacturing process includes fluorination, distillation, and rigorous quality control at each stage.
🏭 Production Capacity
Annual output of 50+ metric tons. Advanced fluorination and distillation ensure high purity and consistent quality across all batches.
📊 Quality Control
Each batch is tested for purity (GC), density, refractive index, and moisture content. COA is issued with every shipment.
🇨🇳 GEO Advantage
China-based manufacturer with integrated supply chain, competitive pricing, and export experience to global markets.
Packaging & Shipping
We offer flexible packaging to support both R&D evaluation and industrial-scale production. All packaging is moisture-proof and designed for safe international transport.
R&D Samples
1g / 5g / 25g / 100g
3–7 business days
Bulk Orders
1kg / 25kg drums / IBC
Lead time negotiable
Shipping
DHL / FedEx (samples)
Air / Sea freight (bulk)
Why Choose Alfa Chemical
Alfa Chemical is a China-based specialty chemical manufacturer serving R&D laboratories and industrial customers worldwide. We combine local production cost advantages with export-grade quality documentation and responsive technical support.
🏗️ 50+ Tons Capacity
Stable supply for research and industrial demand.
📊 Batch Consistency
Strictly controlled purity, density, and refractive index.
📄 Documentation
COA and SDS provided with every shipment.
💬 Technical Support
Free application guidance for formulation and coating development.
FAQ: Purity, Packaging, Regulatory & Lead Time
≥97% by GC analysis. COA is provided with every shipment showing purity, density, refractive index, and moisture content.
Yes. It reacts slowly with moisture. Store sealed under dry conditions, preferably under inert atmosphere. Use immediately after opening.
R&D samples: 1g–100g. Bulk: 1kg / 25kg drums / IBC. Custom packaging available on request.
Yes. COA is included with every shipment. SDS and TDS are available upon request.
3–7 business days from stock for R&D quantities. Bulk orders: lead time negotiable based on quantity.
Yes. Research samples are available for R&D evaluation. Contact us with your application details.
CAS 51851-37-7 is listed under REACH Annex XVII Entry 73 as (3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)silanetriol and its derivatives. The restriction prohibits placing on the market mixtures with organic solvents in spray products for supply to the general public at concentrations ≥2 ppb. Professional use is permitted with appropriate labelling. The EU PFAS restriction proposal is under assessment; RAC adopted its final opinion in March 2026, and SEAC's final opinion is expected by the end of 2026. Contact us for current regulatory documentation and to confirm suitability for your specific application.
Keep in a dark, sealed container under dry conditions at room temperature. Avoid exposure to moisture and open flame.
Need a quote or sample for CAS 51851-37-7?
Response within 12 hours. COA & SDS with every shipment.
Related Products & Resources
About Alfa Chemical
Alfa Chemical Co., Ltd is based in Zhengzhou, China. We supply fluorosilane coupling agents, organic chemicals, and material science products for global R&D and professional industrial customers. For documentation or technical support, visit our contact page.
Hot Tags: 1H,1H,2H,2H-Perfluorooctyltriethoxysilane | CAS 51851-37-7 | Fluorosilane Coupling Agent | China Manufacturer, price, quotation, discount, in stock, for sale, Ionic Liquids
