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HS Code |
427588 |
| Chemicalname | Vinyltriethoxysilane |
| Casnumber | 78-08-0 |
| Molecularformula | C8H18O3Si |
| Molecularweight | 190.31 g/mol |
| Appearance | Colorless to pale yellow transparent liquid |
| Boilingpoint | 160-162 °C |
| Density | 0.876 g/mL at 25°C |
| Flashpoint | 36 °C (closed cup) |
| Refractiveindex | 1.396-1.398 at 20°C |
| Purity | >98% |
| Solubility | Hydrolyzes in water; soluble in organic solvents |
| Odor | Characteristic |
| Meltingpoint | -82 °C |
| Vaporpressure | 3 mmHg at 25°C |
As an accredited Vinyltriethoxysilane factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Vinyltriethoxysilane is supplied in a 200-liter blue HDPE drum with tamper-evident seal, clearly labeled with hazard warnings. |
| Shipping | Vinyltriethoxysilane should be shipped in tightly sealed containers to prevent moisture ingress and volatilization. Transport according to local and international regulations for hazardous chemicals. Store upright in a cool, well-ventilated area away from sources of ignition. Use appropriate hazard labeling, and provide safety data sheets with the shipment for safe handling information. |
| Storage | Vinyltriethoxysilane should be stored in a cool, dry, and well-ventilated area, away from heat, ignition sources, and moisture. Keep the container tightly closed and sealed when not in use. Store separately from acids, bases, and oxidizing agents to prevent hazardous reactions. Use only original, labelled containers and avoid prolonged exposure to air to prevent hydrolysis. |
Applications of Vinyltriethoxysilane in Industrial ManufacturingVinyltriethoxysilane finds adoption across vital advanced material sectors due to its vinyl and alkoxysilane dual reactivity. Manufacturers leverage its unique silane coupling and cross-linking properties to reinforce, modify, or functionalize surfaces at interface-critical stages of polymer composites, wire and cable insulation, adhesives, coatings, and glass treatment workflows. Our decades of manufacturing insight assure customers of consistent product quality and compliance to stringent downstream requirements. 1. Polyolefin Cable Compound Crosslinking for Wire & Cable InsulationIn the wire and cable industry, this silane acts as a co-monomer and crosslinking agent during reactive extrusion of polyethylene and copolymer insulation sheaths. By enabling in-situ silane grafting and subsequent moisture-induced crosslinking, it improves dielectric strength and thermal aging properties while meeting global safety norms for cable performance. Formulators tune silane content to balance processability, gel content, and mechanical profile according to cable grade and application voltage. Industry compliance standards
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2. Glass Fiber Surface Treatment in Reinforced CompositesThis silane is widely used as a surface modifier for glass fibers applied in the manufacture of thermoset and thermoplastic composite parts. By reacting with surface hydroxyls and introducing reactive vinyl groups, it substantially improves interfacial adhesion between the glass reinforcement and organic resin matrices, especially unsaturated polyester or polypropylene. Manufacturers benefit from enhanced composite tensile and flexural performance, reduced fiber pull-out, and long-term hydrolytic stability. Industry compliance standards
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3. Adhesive and Sealant Formulation for Construction and Automotive AssemblyDuring the manufacture of moisture-curable adhesives and sealants, workers add this vinyl-functional silane to polyurethane, silicone, and MS polymer systems to introduce robust adhesion to mineral substrates such as glass, metals, and concrete. The material couples the organic and inorganic phases at the filler–resin interface and participates in co-polymerization or moisture cure steps, directly supporting stronger bonding performance and extended environmental durability under field service conditions. Industry compliance standards
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4. Mineral Filler Modification in Polypropylene and Engineering PlasticsFormulators in automotive, appliance, and consumer durables sectors use the silane as a coupling and dispersion agent to treat mineral fillers—such as talc, calcium carbonate, or silica—prior to blending with olefin or engineering polymer matrices. This pre-treatment reduces agglomeration, facilitates higher filler loading, and enhances final compound mechanical and impact properties by promoting covalent matrix–filler interaction. Industry compliance standards
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5. Sol-Gel Coating Precursors for Glass and Ceramic SurfacesSpecialty glass and ceramics manufacturers rely on this silane as a functional silane precursor in sol-gel chemistries that deposit uniform, durable hybrid organic-inorganic coatings. In these systems, it introduces reactive sites that co-condense with other silicates to impart improved scratch resistance, antisoiling, and hydrophobicity properties onto architectural and automotive glass or ceramic surfaces. Control of silane content dictates coating network density and final optical clarity. Industry compliance standards
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6. Unsaturated Polyester Resin Composites for FRP ManufacturingIn the fabrication of fiber reinforced plastic (FRP) components using unsaturated polyester resins, this silane enables chemical linkage between polymer chains and glass or mineral reinforcements. It provides additional vinyl groups for network formation during cure, which manufacturers use to boost wet-out of glass mats, reduce voids, and improve composite part integrity in demanding marine or transportation applications. Industry compliance standards
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Everyday industrial progress leans heavily on materials science, and some of the most impactful changes come from compounds that rarely make the headlines. Vinyltriethoxysilane stands on that list—an organosilane that has reshaped how industries around the world manage surface treatment and crosslinking. At our manufacturing facility, we have seen the compound’s power in practice, along with the technical hurdles it helps overcome in fields from wire and cable insulation to advanced composites.
We manufacture vinyltriethoxysilane (chemical formula C8H18O3Si) through a process refined over years of continuous production. Quality in each batch hinges on the purity of the raw materials and the expertise invested at every synthesis stage. The compound’s defining feature—its vinyl group linked to a silicon atom and three ethoxy groups—gives it a dual nature that blends organic reactivity with inorganic toughness. This isn’t just a trick of molecular architecture; it allows the molecule to serve as a bridge between two worlds that normally resist mixing—organic polymers and inorganic surfaces.
Consistency matters most in chemical manufacturing. We measure successful production not only by the amount of pure material bottled, but also by its performance in customer processes. Variability disrupts downstream performance. A narrow specification for vinyl content (minimum 98% purity), water content, and refractive index isn’t optional; it’s demanded by customers who need exact results each time. We employ gas chromatography and titration every shift to ensure the silane’s reactivity meets strict requirements.
Electric cable insulation marks one of the main application areas where this compound makes a difference. Polyethylene, widely used as an insulator, gains remarkable heat and weather resistance after crosslinking. The challenge starts at the interface: untreated polyethylene does not bond well with inorganic fillers or sheathings. Our silane, when introduced to the process, initiates crosslinks by responding to the catalyst and environmental moisture. The ethoxy groups hydrolyze to form silanols, which bind to the filler surface or inorganic components, while the vinyl group attaches to the polymer. The link isn’t superficial; it permanently transforms the polymer’s molecular structure. This yields cable insulation with better aging resistance, higher dielectric strength, and flexibility that lasts.
One regular question is why we recommend vinyltriethoxysilane over traditional coupling agents. Many conventional silanes transfer strength to composites by forming unstable bonds that hydrolyze too easily or fail under electrical stress. Our vinyl-functional silane builds lasting bridges, even in humid or electrically demanding environments.
The field use for this product does not stop at cables. We work with customers who depend on the silane’s versatility for improving the surface characteristics of composites and resins. Viscosity, adhesion, and dispersion all shift by adding a little of this silane at the mixing stage. In fiberglass-reinforced plastics, it acts during the resin curing step. The molecule’s bifunctional nature means it ties the glass to unsaturated polyester or epoxy resin. This doesn’t just enhance mechanical strength; it extends the performance window for finished parts, reducing delamination and cracking far down the line.
When manufacturers consider the bottom line, the efficiency of the coupling process frequently trumps even performance. Our silane stands out due to its fast hydrolysis rate and minimal byproduct formation. Process lines run clean, filter life extends, and maintenance interruptions drop. These downstream savings matter over years of regular production.
In surface treatment, especially glass and mineral substrates, our silane often serves as a primer or adhesion promoter. Instead of sticking with physical adsorption, users get a covalent bond. The result is higher gloss, less chalking, and improved scratch resistance in coatings. We’ve observed the best results when the product is used as a pre-treatment for glass before application of polyurethane, acrylic, or epoxy paints. Our data shows at least a 30% bump in bonding strength compared to untreated controls.
In true field conditions, industrial glass processing lines run at full tilt and cannot slow down for specialty products. We keep practical usage in mind during development—we optimize viscosity and vapor pressure to avoid auto-condensation in hot zones of production, so operators don’t face downtime from clogged lines or fouled rollers.
The chemical landscape includes more than a dozen common silanes, each with its quirks and specializations. Aminosilanes, for example, offer strong initial adhesion, but tend to yellow or degrade in UV-exposed applications—a persistent customer complaint in transparent plastics and outdoor composites. Methacryloxy silanes compete in some adhesive markets, but often introduce compatibility problems with pigments or fillers, leading to haze or phase separation. By contrast, vinyltriethoxysilane integrates cleanly and poses little risk of color instability.
Alkyltrialkoxysilanes may provide excellent hydrophobicity, but lack the reactivity for crosslinking or coupling with organic resins. In the pipelined world of cable or composite manufacture, this gap can cost manufacturers in both quality and flexibility. Our vinyl-functional silane supplies both chemical connections and a practical route to tougher, longer-lived products.
Another key aspect: shelf life and transport. Some organosilanes degrade quickly during storage or emit odors that create regulatory headaches. We have optimized not just purity but also aging stability—minimizing acid formation and controlling ethoxy hydrolysis so shipments arrive ready for use without special handling.
Manufacturing this silane in scale brings out obstacles only seen in high-throughput settings. One has to anticipate moisture at every stage—trace water in reactors or collection tanks immediately triggers hydrolysis, leading to polymeric byproducts and off-specification product. In our plant, we run nitrogen-blanketed systems, minimizing exposure and optimizing yield. We control temperature and pressure in the reactor tightly, aiming for steady output without foaming or line blockages.
By investing in closed-system design and continuous inline monitoring, we catch out-of-range values early—cutting waste and securing high-quality shipments. This hands-on, preventive maintenance defines our everyday approach, built from lessons learned through years of operational troubleshooting.
As producers, we do not lose sight of the environmental costs chemical manufacturing can incur. Vinyltriethoxysilane hydrolyzes to ethanol and silanols, substances which—though lower-impact than many solvents—require careful handling. We collect and treat all condensates, avoiding emissions that could disrupt local ecosystems. Employee safety runs parallel: procedures reduce the risk of uncontrolled vaporization or inhalation, minimizing incidents by maintaining proper ventilation and continuous training.
On-site storage calls for stringent controls. The compound reacts vigorously with water, so drums are sealed, areas monitored, and every transfer follows written procedures designed by experienced operators. We cooperate with transport partners familiar with organosilane handling, ensuring safe delivery all the way to the user’s site.
Few manufacturers purchase chemicals for their label alone; performance in the end use matters more than a spec sheet. Our technical team follows user experiences through phone, email, and site visits. In some automotive projects, the ideal silane loading can mean the difference between a reliable paint line and a rework campaign. We often recommend starting with a loading of 0.5 to 1.5 percent by weight based on resin content, adjusting to get strong bonds without embrittling the finished part.
We’ve seen real payoffs when our customers return with field data. A thermoset producer trimmed batch times by nearly 20%, owing to faster cure initiation after adding our vinyltriethoxysilane. A construction materials firm lowered their warranty claims after integrating the product in facade panels, as water ingress dropped markedly.
Developing a new batch of silane begins in the lab, but our process never stays theoretical. Problems discovered at the kilogram scale quickly multiply at the ton or traincar scale. By running parallel pilot and commercial lines, we adapt quickly to customer feedback, modifying trace catalysts or drying steps to better fit unique use cases. Academic literature provides valuable pathways, but nothing replaces learning from end-to-end production.
We participate in industry forums and technical exchanges, freely sharing what works and listening for unforeseen issues. Not just trends, but trace impurities, downstream color changes, or curing anomalies—each problem, once solved, feeds back into our refinements. Regular collaboration with compounders, resin formulators, and process engineers builds a virtuous cycle that benefits anyone relying on our product.
Managed markets, such as Europe’s REACH and North America’s TSCA, fundamentally shape chemical production today. Our product remains listed and registered with appropriate local compliance. This isn’t just to meet the law. Customers in regulated industries—from automotive to construction—take assurance from tracked sourcing and transparent documentation. No one wants regulatory surprises halting their shipments or jeopardizing certifications down the line.
We field regular questions about environmental impact, traceability, and supply chain reliability. In direct conversation, we find buyers care deeply about where their silane comes from and what impurities accompany it. Rather than rely only on external audits, we invest in our own analytics, archiving batch records and retaining reference samples for up to five years. The difference shows if something goes wrong six months after delivery and a customer calls for support; we can trace every raw material and reaction step, giving full visibility to address the issue.
Vinyltriethoxysilane remains a staple in our specialty portfolio not out of habit, but because it continues to meet real needs across evolving applications. Customers shift toward renewable fillers, and our silane’s chemistry adapts without missing a step. Lightweighting trends in automotive composites benefit from material that resists delamination over years of vibration and thermal cycling. As building codes migrate toward sustainable, high-durability envelopes, our silane proves its worth, creating facades that resist water incursion and maintain finish integrity.
To stay ahead, we run continuous improvement circles—mapping process bottlenecks, studying product feedback, consulting researchers, and upgrading production wherever gains are possible. If one innovation extends storage life by three months, the value multiples across the entire delivery chain. Our team doesn’t view these as optional tweaks—they are essential investments for keeping our product meaningful, reliable, and valued.
We encourage experimentation but advise beginning small. Our compound’s high reactivity rewards careful dosing and staged addition to avoid runaway polymerization or foaming. For aqueous systems, premixing with a compatible solvent often yields the best, clump-free dispersion. We share more than formulas—with access to firsthand processing notes, our customers benefit from all lessons learned on our lines.
For coatings or adhesives, using the silane as an additive directly in the formulation often beats post-application treatment. This approach saves energy, reduces waste, and reliably extends product life. Where high clarity matters—optical glass, LEDs, or protective screens—strict purity and color control become non-negotiable. Customers tell us the difference stands out, not in a test tube, but in product reception by their own buyers.
We have seen vinyltriethoxysilane extend the service life of water pipes exposed to ground moisture, reduce failure rates in wind turbine blade composites, and unlock adhesion on notoriously difficult engineering plastics. A few grams in the right spot can mean less maintenance, happier end users, and true environmental savings. The chemistry’s value becomes clear in how customers return—not just for more product, but to discuss new challenges, share data, and propose the next innovation.
It’s easy to discuss chemical products in terms of numbers and certificates. Behind each delivery, there’s a story of trial and refinement, operational discipline, and a hard-won body of experience. For us, vinyltriethoxysilane serves as more than a commodity. It represents a successful collaboration between molecule, process, and people—an ongoing project to make materials stronger, more durable, and adaptable. By making production transparent and responding quickly to feedback, we build trust batch by batch, day after day.