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VTES Vinyltriethoxysilane is an organosilane coupling agent used to improve adhesion and compatibility between inorganic surfaces and organic polymers, and VTES Vinyltriethoxysilane is valued for enhancing bonding, moisture resistance, and mechanical performance in filled or reinforced systems.
VTES Vinyltriethoxysilane is widely used in wire and cable insulation, polyethylene crosslinking systems, fiberglass-reinforced composites, coatings, and adhesives, and VTES Vinyltriethoxysilane performance depends on purity, hydrolysis and condensation control, dosage, and the chemistry of the substrate and polymer matrix.
VTES Vinyltriethoxysilane is typically supplied as a clear, colorless liquid with characteristic odor, and VTES Vinyltriethoxysilane hydrolyzes in the presence of moisture and can release ethanol, so handling requires moisture control, ventilation, and strict safety practices.
CAS Number: 78-08-0
EC Number: 201-083-8
Molecular Formula: C8H18O3Si
Molecular Weight: 190.32 g/mol
Synonyms: VTES Vinyltriethoxysilane, Vinyltriethoxysilane, VTES, Triethoxyvinylsilane, Vinyl Triethoxy Silane, Silane Coupling Agent VTES, Triethoxy(vinyl)silane, Vinylsilane Triethoxy, Vinyltriethoxysilane Monomer, Vinyltriethoxysilane Adhesion Promoter, Vinyltriethoxysilane Grafting Agent, Vinyltriethoxysilane Crosslinking Silane, TES Vinyltriethoxysilane, Vinyltriethoxysilane, Vinyl Triethoxy Silane, Triethoxyvinylsilane, Triethoxy Vinyl Silane, VTES, VTEO, Ethenyltriethoxysilane, Ethenyl Triethoxy Silane, Triethoxyethenylsilane, Triethoxy Ethenyl Silane, Silane Ethenyltriethoxy, Silane Vinyltriethoxy, Vinyltri(ethoxy)silane, Tri(ethoxy)vinylsilane, Triethoxy(vinyl)silane, Ethoxyvinylsilane, Vinylethoxysilane, Organofunctional Vinyl Silane, Vinyl Functional Silane, Ethoxy Functional Vinyl Silane, Vinyl Silane Coupling Agent, Vinyltriethoxysilane Coupling Agent, VTES Coupling Agent, Vinyl Silane Adhesion Promoter, Vinyltriethoxysilane Adhesion Promoter, Vinyl Silane Crosslinker, Vinyltriethoxysilane Crosslinker, Vinyl Silane Monomer, Vinyltriethoxysilane Monomer, Vinyl Silane Modifier, Vinyltriethoxysilane Modifier, Silane Coupling Agent A-151, A-151 Silane, Silquest A-151
APPLICATIONS
VTES Vinyltriethoxysilane is used as a coupling agent in polyethylene and EVA systems to enable moisture-curing crosslinking in silane-crosslinked cable compounds.
VTES Vinyltriethoxysilane is incorporated into wire and cable insulation to improve mechanical properties and moisture resistance after crosslinking.
VTES Vinyltriethoxysilane is used in silane-grafting processes where vinyl silane functionality is introduced into polymer chains.
VTES Vinyltriethoxysilane is used in fiberglass and mineral-filled composites to improve filler wetting and interfacial adhesion.
VTES Vinyltriethoxysilane is incorporated into glass fiber reinforced plastics to improve strength retention and reduce water-related property loss.
VTES Vinyltriethoxysilane is used in mineral-filled polypropylene and polyethylene in selected applications to improve dispersion and mechanical performance.
VTES Vinyltriethoxysilane is used in coatings and paints as an adhesion promoter to improve bonding to glass, metal oxides, and mineral substrates.
VTES Vinyltriethoxysilane is incorporated into primers to increase moisture resistance and reduce delamination in compatible coating systems.
VTES Vinyltriethoxysilane is used in sealants and adhesives to improve adhesion and durability on inorganic surfaces.
VTES Vinyltriethoxysilane is used in crosslinkable polymer systems in selected applications to improve cure efficiency and network formation.
VTES Vinyltriethoxysilane is incorporated into moisture-curing systems where silane hydrolysis and condensation create siloxane crosslinks.
VTES Vinyltriethoxysilane is used in reactive formulations where improved interfacial bonding supports improved mechanical performance.
VTES Vinyltriethoxysilane is valued because VTES Vinyltriethoxysilane provides a reactive silane interface that bonds to inorganic surfaces while providing vinyl reactivity or grafting capability in organic polymer matrices.
VTES Vinyltriethoxysilane is used as a silane coupling agent in polymer composite formulations.
VTES Vinyltriethoxysilane improves adhesion between organic polymers and inorganic substrates.
VTES Vinyltriethoxysilane is used in glass fiber treatment.
VTES Vinyltriethoxysilane helps strengthen bonding between glass fibers and resin matrices.
VTES Vinyltriethoxysilane is used in fiberglass-reinforced plastic production.
VTES Vinyltriethoxysilane supports improved mechanical strength in composite materials.
VTES Vinyltriethoxysilane is used in mineral-filled plastic formulations.
VTES Vinyltriethoxysilane improves compatibility between polymer matrices and mineral fillers.
VTES Vinyltriethoxysilane is used in polyethylene crosslinking applications.
VTES Vinyltriethoxysilane enables moisture-curable silane-grafted polyethylene systems.
VTES Vinyltriethoxysilane is used in wire and cable insulation compounds.
VTES Vinyltriethoxysilane improves thermal, mechanical, and electrical performance in crosslinked polyethylene insulation.
VTES Vinyltriethoxysilane is used in pipe and tubing materials.
VTES Vinyltriethoxysilane supports moisture-cured crosslinking in polyethylene pipe systems.
VTES Vinyltriethoxysilane is used in cable sheathing formulations.
VTES Vinyltriethoxysilane helps improve durability and resistance to environmental stress.
VTES Vinyltriethoxysilane is used in sealant formulations.
VTES Vinyltriethoxysilane improves adhesion to glass, metal, ceramic, and mineral substrates.
VTES Vinyltriethoxysilane is used in adhesive formulations.
VTES Vinyltriethoxysilane acts as an adhesion promoter in moisture-curing systems.
VTES Vinyltriethoxysilane is used in coating formulations.
VTES Vinyltriethoxysilane improves coating adhesion and water resistance.
VTES Vinyltriethoxysilane is used in primer formulations.
VTES Vinyltriethoxysilane helps prepare inorganic surfaces for bonding with organic materials.
VTES Vinyltriethoxysilane is used in construction chemical formulations.
VTES Vinyltriethoxysilane improves adhesion and durability in sealants, coatings, and repair compounds.
VTES Vinyltriethoxysilane is used in waterproofing formulations.
VTES Vinyltriethoxysilane supports improved water resistance on compatible mineral surfaces.
VTES Vinyltriethoxysilane is used in artificial stone and engineered stone systems.
VTES Vinyltriethoxysilane supports bonding between resin binders and mineral aggregates.
VTES Vinyltriethoxysilane is used in quartz composite formulations.
VTES Vinyltriethoxysilane helps improve mechanical strength and moisture resistance.
VTES Vinyltriethoxysilane is used in rubber compounding.
VTES Vinyltriethoxysilane improves compatibility between elastomers and silica or mineral fillers.
VTES Vinyltriethoxysilane is used in elastomer reinforcement systems.
VTES Vinyltriethoxysilane supports better filler-polymer interaction in selected rubber materials.
VTES Vinyltriethoxysilane is used in unsaturated polyester resin systems.
VTES Vinyltriethoxysilane improves bonding to glass, silica, and mineral fillers.
VTES Vinyltriethoxysilane is used in acrylic resin modification.
VTES Vinyltriethoxysilane introduces reactive silane functionality into polymer structures.
VTES Vinyltriethoxysilane is used in emulsion polymerization.
VTES Vinyltriethoxysilane can provide vinyl functionality for copolymer formation.
VTES Vinyltriethoxysilane is used in silane-modified polymer synthesis.
VTES Vinyltriethoxysilane supports the preparation of moisture-curable hybrid polymers.
VTES Vinyltriethoxysilane is used in surface modification of inorganic particles.
VTES Vinyltriethoxysilane helps make mineral surfaces more compatible with organic media.
VTES Vinyltriethoxysilane is used in ceramic and glass surface treatments.
VTES Vinyltriethoxysilane helps create organofunctional surface layers.
VTES Vinyltriethoxysilane is used in metal surface treatment systems.
VTES Vinyltriethoxysilane improves adhesion between metal surfaces and organic coatings.
VTES Vinyltriethoxysilane is used in anticorrosion coating systems.
VTES Vinyltriethoxysilane helps enhance barrier properties and coating durability.
VTES Vinyltriethoxysilane is used in pigment and filler dispersion systems.
VTES Vinyltriethoxysilane improves wetting and dispersion of inorganic solids in organic formulations.
VTES Vinyltriethoxysilane is used in specialty resin synthesis.
VTES Vinyltriethoxysilane serves as a reactive monomer for silane-modified polymers.
DESCRIPTION
VTES Vinyltriethoxysilane is an organosilane with a vinyl group and three ethoxy groups bonded to silicon, and the ethoxy groups hydrolyze in the presence of water to form silanol groups that can condense to siloxane bonds.
VTES Vinyltriethoxysilane acts as a coupling agent by bonding to hydroxylated inorganic surfaces such as glass or silica through siloxane linkages, and the vinyl functionality enables grafting or integration into organic polymer networks.
VTES Vinyltriethoxysilane performance depends on controlled hydrolysis and condensation, and pH, water content, and catalysts strongly influence reaction rate and final bonding quality.
VTES Vinyltriethoxysilane hydrolysis releases ethanol, and this creates safety considerations related to flammability and vapor exposure, so ventilation and ignition control are important.
VTES Vinyltriethoxysilane is moisture sensitive and can polymerize or gel if exposed to water, so storage should minimize humidity and containers should be tightly sealed.
VTES Vinyltriethoxysilane should be used according to applicable regulations and good industrial hygiene practices for the target market and facility.
VTES Vinyltriethoxysilane should be stored away from strong acids and bases unless compatibility is verified, because catalysts and pH can accelerate hydrolysis and condensation.
VTES Vinyltriethoxysilane should be handled with dry equipment and controlled addition to prevent premature gelation or loss of activity.
VTES Vinyltriethoxysilane should be kept away from strong oxidizers and ignition sources due to solvent-like flammability behavior.
VTES Vinyltriethoxysilane is an organofunctional silane containing vinyl and triethoxy groups.
VTES Vinyltriethoxysilane is also known as vinyl triethoxy silane or triethoxyvinylsilane.
VTES Vinyltriethoxysilane is typically supplied as a clear, colorless liquid.
VTES Vinyltriethoxysilane has a characteristic alcohol-like or ester-like odor.
VTES Vinyltriethoxysilane is reactive toward moisture because of its ethoxy groups.
VTES Vinyltriethoxysilane can hydrolyze to form silanol groups.
VTES Vinyltriethoxysilane can undergo condensation to form siloxane bonds.
VTES Vinyltriethoxysilane can bond inorganic surfaces to organic polymer systems.
VTES Vinyltriethoxysilane contains a vinyl group that can participate in radical polymerization.
VTES Vinyltriethoxysilane is useful for grafting silane functionality onto polyolefins.
VTES Vinyltriethoxysilane is compatible with many resins, plastics, fillers, and mineral substrates.
VTES Vinyltriethoxysilane performance depends on hydrolysis conditions, catalyst system, and substrate surface chemistry.
VTES Vinyltriethoxysilane improves adhesion by forming chemical bridges at material interfaces.
VTES Vinyltriethoxysilane can improve moisture resistance in reinforced and filled polymers.
VTES Vinyltriethoxysilane can improve mechanical strength in composite systems.
VTES Vinyltriethoxysilane can help reduce filler agglomeration in selected formulations.
VTES Vinyltriethoxysilane should be stored in tightly sealed containers.
VTES Vinyltriethoxysilane should be protected from moisture, heat, and incompatible materials.
VTES Vinyltriethoxysilane may release ethanol during hydrolysis.
VTES Vinyltriethoxysilane should be handled with suitable ventilation and protective equipment.
VTES Vinyltriethoxysilane is flammable and should be kept away from ignition sources.
VTES Vinyltriethoxysilane quality may be defined by purity, color, moisture content, and hydrolyzable chlorine level.
PROPERTIES
Chemical Formula: C8H18O3Si
Molecular Weight: 190.32 g/mol
Common Name: VTES Vinyltriethoxysilane
Chemical Type: Organosilane coupling agent; adhesion promoter; crosslinking silane
Appearance: Clear, colorless liquid
Odor: Characteristic odor
Solubility: Reacts with water (hydrolysis); soluble in many organic solvents; limited stability in water
Boiling Point: ~160–165°C (typical)
Flash Point: ~45–55°C (typical; flammable; grade dependent)
Density: ~0.89–0.90 g/cm³ (typical at 20°C)
Reactivity: Hydrolyzes with moisture; releases ethanol; condenses to siloxanes
Stability: Moisture sensitive; store dry and tightly sealed
Storage Temperature: 5–25°C, tightly closed, dry, well-ventilated, away from ignition sources
Shelf Life: Typically 12–24 months in original sealed packaging (supplier dependent)
FIRST AID
Inhalation:
Move to fresh air immediately.
Seek medical attention if symptoms such as headache, dizziness, or breathing discomfort occur.
Avoid breathing vapors because hydrolysis can release ethanol and irritating silane vapors.
Skin Contact:
Remove contaminated clothing and wash skin with soap and water.
Seek medical advice if irritation develops or persists.
Avoid prolonged contact because organosilanes and ethanol can irritate skin.
Eye Contact:
Rinse cautiously with water for at least 15 minutes.
Remove contact lenses if present and easy to do, then continue rinsing.
Seek immediate medical attention because eye exposure can be serious.
Ingestion:
Rinse mouth with water and do not induce vomiting.
Seek immediate medical attention or contact a poison center.
Never give anything by mouth to an unconscious person.
Note to Physicians:
Treat symptomatically.
Consider ethanol exposure risk from hydrolysis products in significant exposures.
Provide supportive care as needed.
HANDLING AND STORAGE
Handling:
Use appropriate PPE including chemical-resistant gloves, goggles or face shield, and protective clothing.
Work with dry equipment and minimize exposure to moisture and humidity.
Eliminate ignition sources and use grounding/bonding because the material is flammable and may release ethanol.
Ventilation:
Use local exhaust ventilation to control vapor levels.
Avoid handling in confined spaces without adequate ventilation.
Use explosion-proof ventilation and equipment where flammable vapors may be present.
Storage:
Store in tightly closed containers in a cool, dry, well-ventilated flammable liquids area.
Protect from moisture to prevent hydrolysis and ethanol release and to preserve activity.
Segregate from strong oxidizers and from acids or bases that can accelerate hydrolysis.
Spill and Leak Procedures:
Eliminate ignition sources and ventilate the area.
Contain spill with inert absorbent and collect into approved containers.
Prevent entry into drains and dispose of waste according to local regulations and facility procedures.
Handling Precautions:
Control moisture exposure because VTES Vinyltriethoxysilane hydrolyzes and can lose activity and generate ethanol if exposed to water.
Optimize addition and catalyst conditions because hydrolysis/condensation control determines coupling performance and crosslink efficiency.
Use trained handling procedures for flammable, moisture-sensitive chemicals to minimize exposure risk and maintain product performance.
