Description

Phenyltriethoxysilane (CAS 780-69-8) is a high-purity organosilane compound with the molecular formula C₁₂H₂₀O₃Si, widely used as a coupling agent and surface modifier in advanced materials science. This clear, colorless to pale yellow liquid (IUPAC name: triethoxy(phenyl)silane) features a phenyl group bonded to a triethoxysilane moiety, enabling dual reactivity for organic-inorganic hybrid applications. With a boiling point of approximately 234°C and density of 0.993 g/mL at 25°C, it offers excellent hydrolytic stability while remaining reactive toward hydroxyl groups on substrates like glass, metals, and minerals. Our pharmaceutical-grade material is meticulously distilled to ≥98% purity (GC), with controlled moisture content for optimal shelf stability. Suitable for sol-gel processes, this silane is packaged under nitrogen in amber glass bottles to prevent premature hydrolysis. Key applications include surface functionalization, polymer modification, and as a precursor for silica-based nanocomposites.

Synonyms: Triethoxy(phenyl)silane, Triethoxyphenylsilane, Benzeneorthosiliconic acid triethyl ester

Handling: Moisture-sensitive – store under inert atmosphere. Use in well-ventilated areas with appropriate PPE.

Properties

• CAS Number: 780-69-8
• Complexity: 164
• IUPAC Name: triethoxy(phenyl)silane
• InChI: InChI=1S/C12H20O3Si/c1-4-13-16(14-5-2,15-6-3)12-10-8-7-9-11-12/h7-11H,4-6H2,1-3H3
• InChI Key: JCVQKRGIASEUKR-UHFFFAOYSA-N
• Exact Mass: 240.11817103
• Molecular Formula: C12H20O3Si
• Molecular Weight: 240.37
• SMILES: CCO[Si](C1=CC=CC=C1)(OCC)OCC
• Topological: 27.7
• Monoisotopic Mass: 240.11817103
• Physical Description: Liquid
• Synonyms: Phenyltriethoxysilane, Triethoxy(phenyl)silane, Triethoxyphenylsilane, Triethoxyfenylsilan, Benzeneorthosiliconic acid, triethyl ester, SILANE, PHENYLTRIETHOXY-, Benzene, (triethoxysilyl)-, Triethoxyfenylsilan [Czech], EINECS 212-305-8, NSC 77115, UNII-QI310T2X15, DTXSID8044462, QI310T2X15, NSC-77115, Silane, phenyltriethoxy-,, DTXCID6024462, TRI(ETHOXO)(PHENYL)SILANE, EC 212-305-8, CP0320, jcvqkrgiaseukr-uhfffaoysa-n, 780-69-8, Silane, triethoxyphenyl-, C12H20O3Si, TRIETHOXYPHENYL-SILANE, NSC77115, MFCD00009065, phenyltri(ethoxy)silane, triethoxy-phenyl-silane, Triethoxyphenylsilane, 98%, SCHEMBL29900, SCHEMBL6054062, SCHEMBL6054067, CHEMBL3182111, PHENYLTRIETHOXYSILANE; PTES, WLN: 2O-SI-R&O2&O2, Tox21_302168, STL453639, AKOS008901273, CS-W020904, FS-3831, NCGC00255717-01, CAS-780-69-8, DB-030251, NS00042231, P0735, E75918, S13700, Triethoxyphenylsilane, deposition grade, >=98%, EN300-6499593, Q27287276

Application

Phenyltriethoxysilane serves as a versatile coupling agent in hybrid organic-inorganic materials, particularly for modifying silica surfaces in chromatography stationary phases. In polymer science, it enhances interfacial adhesion between fillers and resin matrices in composites. The compound finds significant use in sol-gel synthesis of phenyl-functionalized silica nanoparticles for catalytic and drug delivery applications. Its hydrophobic phenyl group makes it valuable for creating water-repellent coatings on glass and ceramics.

Safety and Hazards

GHS Hazard Statements

• H226 (85.7%): Flammable liquid and vapor [Warning Flammable liquids]
• H315 (17.7%): Causes skin irritation [Warning Skin corrosion/irritation]
• H373 (76.3%): May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]
• H412 (60.5%): Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]

Precautionary Statements

• P210, P233, P240, P241, P242, P243, P260, P264, P273, P280, P302+P352, P303+P361+P353, P319, P321, P332+P317, P362+P364, P370+P378, P403+P235, and P501

Hazard Classes and Categories

• Flam. Liq. 3 (85.7%)
• Skin Irrit. 2 (17.7%)
• STOT RE 2 (76.3%)
• Aquatic Chronic 3 (60.5%)

If you are interested or have any questions, please contact us at support@atomfair.com

Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.