Description

Vinyltriethoxysilane (CAS 78-08-0) is a highly versatile organosilane compound with the molecular formula C₈H₁₈O₃Si. This clear, colorless liquid is widely used as a coupling agent, adhesion promoter, and surface modifier in polymer, composite, and coating applications. Its unique molecular structure, featuring a reactive vinyl group and hydrolyzable ethoxy groups, enables covalent bonding between organic and inorganic materials. With a purity of ≥98%, our Vinyltriethoxysilane is ideal for demanding research and industrial applications. The product is packaged under inert gas to ensure stability and is available in various quantities to suit laboratory and production needs. Technical specifications include a boiling point of 160-161°C, density of 0.90 g/mL at 25°C, and refractive index of n²⁰/D 1.40. Store in a cool, dry place away from moisture and oxidizing agents.

Properties

• CAS Number: 78-08-0
• Complexity: 110
• IUPAC Name: triethoxy(vinyl)silane
• InChI: InChI=1S/C8H18O3Si/c1-5-9-12(8-4,10-6-2)11-7-3/h8H,4-7H2,1-3H3
• InChI Key: FWDBOZPQNFPOLF-UHFFFAOYSA-N
• Exact Mass: 190.10252097
• Molecular Formula: C8H18O3Si
• Molecular Weight: 190.31
• SMILES: CCO[Si](C=C)(OCC)OCC
• Topological: 27.7
• Monoisotopic Mass: 190.10252097
• Physical Description: Liquid
• Vapor Pressure: 2.28 [mmHg]
• Synonyms: Vinyltriethoxysilane, TRIETHOXYVINYLSILANE, 78-08-0, Silane, ethenyltriethoxy-, Triethoxy(vinyl)silane, Triethoxyvinylsilicane, Silane, triethoxyvinyl-, Triethoxyvinyl silane, Silane A 151, Union carbide A-151, VTS-E, KBE 1003, CCRIS 2645, NV 1107, Silane, vinyl triethoxy 1-151, EINECS 201-081-7, BRN 1767229, 8V1TKX755V, AI3-51468, TRI(ETHOXO)(VINYL)SILANE, EC 201-081-7, Silane, triethoxyvinyl, Union Carbide A151, Silane, ethenyltriethoxy, Silane, vinyl triethoxy 1151, VINYLTRIETHOXYSILANE [INCI], 201-081-7, ethenyltriethoxysilane, ethenyl(triethoxy)silane, VTES, (Triethoxysilyl)ethylene, DTXSID3044463, ethenyl-triethoxysilane, UNII-8V1TKX755V, Dynasylan VTEO, vinyl triethoxysilane, MFCD00009063, VTEO, triethoxyvinyl silicane, vinyl triethoxy silane, vinyltri(ethoxy)silane, Ethenyltriethyloxy-silane, Triethoxyvinylsilane, 97%, SCHEMBL22548, CHEMBL3188350, DTXCID1024463, SCHEMBL19136057, FWDBOZPQNFPOLF-UHFFFAOYSA-, Tox21_302167, BBL011391, STL146494, AKOS005721107, CV-4910, FS-3827, CAS-78-08-0, s21975, NCGC00255729-01, DB-056282, A 151, NS00041103, V0044, Triethoxyvinylsilane, >=98%, deposition grade, Triethoxyvinylsilane 100 microg/mL in Acetonitrile, Q27271055, InChI=1/C8H18O3Si/c1-5-9-12(8-4,10-6-2)11-7-3/h8H,4-7H2,1-3H3

Application

Vinyltriethoxysilane is primarily used as a coupling agent in fiberglass-reinforced plastics and mineral-filled composites. It enhances the adhesion between polymers and inorganic substrates in coatings, adhesives, and sealants. The compound also serves as a surface modifier for silica, glass, and metal oxides in nanotechnology applications. Additionally, it finds use in moisture-curable systems and as a precursor for further chemical modifications.

Safety and Hazards

GHS Hazard Statements

• H226 (82.3%): Flammable liquid and vapor [Warning Flammable liquids]
• H319 (26.7%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335 (26.4%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

• P210, P233, P240, P241, P242, P243, P261, P264+P265, P271, P280, P303+P361+P353, P304+P340, P305+P351+P338, P319, P337+P317, P370+P378, P403+P233, P403+P235, P405, and P501

Hazard Classes and Categories

• Flam. Liq. 3 (82.3%)
• Eye Irrit. 2 (26.7%)
• STOT SE 3 (26.4%)

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