Description

Perfluorooctyl triethoxysilane (CAS 51851-37-7) is a high-purity fluorinated silane coupling agent with the molecular formula C₁₄H₁₉F₁₃O₃Si. This organosilane compound features a tridecafluorooctyl chain bonded to a triethoxysilane group, offering exceptional hydrophobicity, oleophobicity, and chemical resistance. It is widely utilized as a surface modifier to impart low surface energy characteristics to substrates such as glass, metals, ceramics, and polymers. The triethoxy functionality enables covalent bonding to hydroxylated surfaces via hydrolysis and condensation reactions, forming durable, self-assembled monolayers (SAMs). Supplied as a clear, colorless to pale yellow liquid, it is compatible with sol-gel processes and is ideal for creating anti-fouling, anti-icing, and stain-resistant coatings. Suitable for research and industrial applications in nanotechnology, microelectronics, and advanced materials science.

Properties

• CAS Number: 51851-37-7
• Complexity: 563
• IUPAC Name: triethoxy(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)silane
• InChI: InChI=1S/C14H19F13O3Si/c1-4-28-31(29-5-2,30-6-3)8-7-9(15,16)10(17,18)11(19,20)12(21,22)13(23,24)14(25,26)27/h4-8H2,1-3H3
• InChI Key: AVYKQOAMZCAHRG-UHFFFAOYSA-N
• Exact Mass: 510.0895871
• Molecular Formula: C14H19F13O3Si
• Molecular Weight: 510.36
• SMILES: CCO[Si](CCC(C(C(C(C(C(F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(OCC)OCC
• Topological: 27.7
• Monoisotopic Mass: 510.0895871
• Synonyms: 1h,1h,2h,2h-Perfluorooctyltriethoxysilane, Triethoxy(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)silane, perfluorooctyl triethoxysilane, Silane, triethoxy(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)-, EINECS 257-473-3, PERFLUOROOCTYL TRIETHOXYSILANE [INCI], 51851-37-7, MFCD00042333, Triethoxy-1H,1H,2H,2H-tridecafluoro-n-octylsilane, Triethoxy((perfluorohexyl)ethyl)silane, 814P46684U, 1,1,2,2-Tetrahydroperfluorooctyltriethoxysilane, Triethoxy(1H,1H,2H,2H-perfluoro-1-octyl)silane, Tridecafluoro-1,1,2,2-tetrahydrooctyl-1-triethoxysilane, C14H19F13O3Si, (1h,1h,2h,2h-perfluorooctyl)triethoxysilane, UNII-814P46684U, SCHEMBL72022, (tridecafluoro-1,1,2,2-tetrahydrooctyl)triethoxysilane, DTXSID1074915, BBL103902, STL557712, AKOS008901241, DS-4277, FT60547, SY042613, CS-0151945, NS00056503, T1770, Triethoxy(1H,1H,2H,2H-perfluoroctyl)silane, D71002, S13150, 1H,1H,2H,2H-Perfluoroctyltriethoxysilane, 97%, Triethoxy-1H,1H,2H,2H-perfluoro-n-octylsilane, 1H,1H,2H,2H-Perfluorooctyltriethoxysilane, 98%, 1H,1H,2H,2H-Tridecafluoro-n-octyltriethoxysilane, Triethoxy-1H,1H,2H,2H-Tridecafluoro-N-Ctylsilane, (Tridecafluoro-1,1,2,2-Tetrahydroctyl)Triethoxysilane, Q27269203, 1H,1H,2H,2H-Perfluorooctyltriethoxysilane, high purity, Triethoxy(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluoro-1-octyl), Triethoxy(3,3,4,4,5,5,6,6,7,7,8,8,8-Tridecafluoroctyl)-Silane, Triethoxy(3,3,4,4,5,5,6,6,7,7,8,8,8-Tridecafluoroctyl)Silane, Triethoxy(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluoro-1-octyl)silane, 1H,1H,2H,2H-Tridecafluoro-n-octyltriethoxysilane;Triethoxy-1H,1H,2H,2H-perfluoro-n-octylsilane

Application

Perfluorooctyl triethoxysilane is extensively used to modify surfaces for water and oil repellency in coatings, textiles, and electronics. It serves as a key component in anti-reflective and anti-fogging treatments for optical lenses and displays. In microfluidics, it enables the creation of hydrophobic channels to control fluid flow. The compound is also employed in the fabrication of corrosion-resistant and self-cleaning materials for architectural and automotive applications.

Safety and Hazards

GHS Hazard Statements

• H315 (65%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (65%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335 (60.2%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

• P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

• Skin Irrit. 2 (65%)
• Eye Irrit. 2 (65%)
• STOT SE 3 (60.2%)

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