Description

Trimethoxy(pentafluorophenyl)silane (CAS No. 223668-64-2) is a highly specialized organosilicon compound with the molecular formula C₉H₉F₅O₃Si. This fluorinated silane reagent is widely utilized in surface modification, polymer chemistry, and advanced material synthesis due to its unique reactivity and stability. The compound features a pentafluorophenyl group bonded to a trimethoxysilane moiety, enabling dual functionality for covalent attachment to surfaces and further derivatization. With a purity grade suitable for research and industrial applications, this product is rigorously tested via GC, NMR, and FTIR to ensure consistency. Ideal for creating hydrophobic coatings, functionalized silica materials, or as a precursor in pharmaceutical intermediates. Packaged under inert gas to maintain stability, it is supplied in amber glass bottles to prevent degradation.

Properties

• CAS Number: 223668-64-2
• Complexity: 257
• IUPAC Name: trimethoxy-(2,3,4,5,6-pentafluorophenyl)silane
• InChI: InChI=1S/C9H9F5O3Si/c1-15-18(16-2,17-3)9-7(13)5(11)4(10)6(12)8(9)14/h1-3H3
• InChI Key: XFFHTZIRHGKTBQ-UHFFFAOYSA-N
• Exact Mass: 288.02411149
• Molecular Formula: C9H9F5O3Si
• Molecular Weight: 288.24
• SMILES: CO[Si](C1=C(C(=C(C(=C1F)F)F)F)F)(OC)OC
• Topological: 27.7
• Monoisotopic Mass: 288.02411149
• Synonyms: Trimethoxy(pentafluorophenyl)silane, 223668-64-2, DTXSID50382186, DTXCID70333211, 607-005-2, trimethoxy(perfluorophenyl)silane, Trimethoxy-(2,3,4,5,6-pentafluorophenyl)silane, pentafluorophenyltrimethoxysilane, Benzene,1,2,3,4,5-pentafluoro-6-(trimethoxysilyl)-, MFCD04039205, trimethoxy(2,3,4,5,6-pentafluorophenyl)silane, C9H9F5O3Si, SCHEMBL1359990, BBL103530, STL557340, AKOS025212979, AS-68429, SY050881, DB-234126, T3352, Trimethoxy(pentafluorophenyl)silane, >/=97%, T72107

Application

Trimethoxy(pentafluorophenyl)silane is extensively used as a coupling agent for modifying glass, metal oxide, or silica surfaces with fluorinated aromatic groups, enhancing hydrophobicity and chemical resistance. In materials science, it serves as a key intermediate for synthesizing hybrid organic-inorganic composites with tailored dielectric or optical properties. The compound’s reactive silane group also facilitates its use in chromatography stationary phase functionalization for improved separation performance.

Safety and Hazards

GHS Hazard Statements

• H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

Precautionary Statements

• P264, P264+P265, P280, P302+P352, P305+P351+P338, P321, P332+P317, P337+P317, and P362+P364

Hazard Classes and Categories

• Skin Irrit. 2 (100%)
• Eye Irrit. 2 (100%)

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