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(3-Glycidyloxypropyl)Triethoxysilane

    • Product Name (3-Glycidyloxypropyl)Triethoxysilane
    • Alias GPTMS
    • Einecs 219-784-2
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry sales7@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    907354

    Cas Number 2602-34-8
    Molecular Formula C9H20O5Si
    Molecular Weight 236.34 g/mol
    Appearance Colorless to pale yellow transparent liquid
    Boiling Point 290°C (554°F)
    Density 1.03 g/cm3 at 25°C
    Flash Point 110°C (230°F)
    Refractive Index 1.427–1.429 at 25°C
    Solubility Soluble in organic solvents, hydrolyzes in water
    Purity ≥98%
    Synonyms (3-Glycidyloxypropyl)triethoxysilane, GPTMS, γ-Glycidoxypropyltriethoxysilane
    Shelf Life 12 months when properly stored
    Storage Temperature 2–8°C, keep container tightly closed
    Vapor Pressure 0.11 mmHg at 25°C
    Ec Number 220-941-2

    As an accredited (3-Glycidyloxypropyl)Triethoxysilane factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 500 mL chemical is packaged in a sturdy amber glass bottle with a secure screw cap, labeled for safety and identification.
    Shipping (3-Glycidyloxypropyl)triethoxysilane is typically shipped in sealed, corrosion-resistant containers such as drums or bottles, protected from moisture and direct sunlight. Ensure containers are tightly closed during transport and stored upright. Comply with local and international regulations, and include appropriate labeling and Safety Data Sheets (SDS) with each shipment.
    Storage (3-Glycidyloxypropyl)triethoxysilane should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area away from moisture and incompatible materials such as strong acids and bases. Protect it from direct sunlight and ignition sources. Store under inert gas if possible to prevent hydrolysis. Keep the container upright and handle in accordance with standard chemical safety practices.
    Application of (3-Glycidyloxypropyl)Triethoxysilane

    Applications of (3-Glycidyloxypropyl)Triethoxysilane in Industrial Manufacturing

    As a direct manufacturer of (3-Glycidyloxypropyl)Triethoxysilane, we support a diverse range of advanced industrial processes. This silane coupling agent strengthens chemical bonds between organic polymers and inorganic surfaces, improving product durability, performance, and manufacturing efficiency. Below, we outline major application scenarios based on actual industry integration and real end-user manufacturing practices.

    1. Glass Fiber Sizing for Reinforced Composites

    Manufacturers of glass fiber reinforced plastics (GFRP) and thermoset composites depend on this silane as a key component in glass fiber sizing formulations. As an epoxy-functional silane, it creates durable chemical bridges between glass surfaces and resin matrices—especially epoxy, polyester, and vinyl ester systems. Our customers combine it with film formers, lubricants, and antistatic additives, achieving higher interfacial adhesion and mechanical strength in end composites. Selection of dosage is closely related to glass type, sizing bath formulation, and the target resin system. The silane enters during aqueous glass fiber sizing preparation, before final drawing and chopping steps. Finished products include automotive body panels, electrical insulation laminates, wind turbine blades, and marine structural components.

    Industry compliance standards

    • ISO 17749:2021 (Sizing materials for glass fibres)
    • ASTM D3171 (Composites—Constituent Content)
    • OSHA 29 CFR 1910 (Occupational exposure in fiber manufacturing)
    • RoHS Directive 2011/65/EU (Hazardous substance limits)

    Typical usage ratio

    • 0.2–1.0 wt% in total sizing bath, adjusted for glass surface area and target adhesion properties

    Downstream process integration

    • Direct addition to aqueous glass fiber sizing formulation prior to fiber drawing and bundling

    Final product types

    • GFRP automotive panels
    • Printed circuit board laminates
    • Wind turbine blades
    • Boat hulls and marine structures

    2. Adhesive and Sealant Formulation for Construction and Electronics

    Epoxy-based adhesives and sealants require silane coupling agents to improve cohesion between resin and inorganic fillers (such as silica, alumina, and glass beads). Leading adhesive manufacturers use our (3-Glycidyloxypropyl)Triethoxysilane to ensure enhanced bond strength, moisture resistance, and long-term durability. The product enters during compounding, pre-blending with fillers before addition to the resin base. Compliance with major construction and electronics standards guides both ingredient selection and recommended dose. Final adhesives are used in electronics assembly, structural glazing, construction joints, and industrial sealing.

    Industry compliance standards

    • UL 746C (Polymeric Materials—Use in Electrical Equipment)
    • ISO 4587 (Adhesive joints—Tensile lap-shear test method)
    • ASTM C920 (Elastomeric Joint Sealants)
    • REACH Regulation (EC) No 1907/2006 (Chemical safety for EU markets)

    Typical usage ratio

    • 0.5–2.0 wt% relative to inorganic filler content; adjusted based on filler loading, filler type, and end use

    Downstream process integration

    • Pre-treatment or direct mixing with inorganic fillers followed by compounding into adhesive or sealant formulations

    Final product types

    • Silica-filled construction and structural adhesives
    • Electronic potting compounds
    • Hybrid polyurethane-epoxy sealants
    • High-performance glazing sealants

    3. Mineral Filler Surface Modification in Polymer Compounding

    Thermoplastics and thermosets often rely on mineral fillers for improved dimensional stability and cost reduction. Our silane serves as a coupling agent to treat mineral surfaces—such as calcium carbonate, talc, and kaolin—promoting compatibility and dispersion in polyolefins, PVC, and engineering resins. Treatment typically occurs during high-shear blending or pre-coating steps, optimizing interaction with the base polymer. Final properties such as moldability, impact strength, and weathering resistance see measurable gains. The silane’s inclusion must align with food-contact, environmental and polymer-specific quality systems where relevant.

    Industry compliance standards

    • FDA 21 CFR 177.2600 (Rubber articles intended for repeat use)
    • EN 71-3:2019 (Safety of toys—Migration of certain elements—for filled plastics)
    • ISO 9001 (Quality management in compounding and surface treatment)
    • EU Regulation (EU) No 10/2011 (Plastic food contact materials)

    Typical usage ratio

    • 0.3–1.5 wt% based on filler weight; adjusted for polymer matrix type, surface area, and process scheme

    Downstream process integration

    • Blending with minerals during pre-treatment prior to extrusion, or in situ dosing during twin-screw compounding

    Final product types

    • Talc-filled polypropylene
    • PVC cable insulation compounds
    • Engineering plastic automotive parts
    • Household appliance casings

    4. Surface Functionalization of Inorganic Substrates for Specialty Coatings

    Specialty coatings manufacturers use this silane to functionalize glass, quartz, ceramics, and metals, improving wet adhesion of epoxy or polyurethane topcoats. By grafting epoxy-reactive groups onto substrate surfaces, our silane enables further chemical bonding with coating resins during curing. It is introduced via priming solutions, dip-coating, or spray application, following strict environmental and safety standards particularly in electronics and architectural finishes. The resulting articles exhibit heightened abrasion resistance, water repellency, and thermal stability.

    Industry compliance standards

    • IEC 62321 (Hazardous substances in electronics—RoHS compliance)
    • ISO 16000-9 (Emission from building products—Coating materials)
    • EPA 40 CFR Part 63 (Hazardous Air Pollutants from coating operations)
    • JIS K 5600 series (Testing of paints and related materials—Adhesion and corrosion testing)

    Typical usage ratio

    • 0.5–2.0 vol% in primer or pretreatment solution; level optimized based on substrate type and required final properties

    Downstream process integration

    • Addition to primer or pre-treatment bath for surface activation before final coating step

    Final product types

    • Protective glass coatings for displays
    • Anti-corrosion metal primers
    • High-durability ceramic-coated electronic parts
    • Architectural glass panels

    5. Silicone Elastomer Crosslinking for Molded and Extruded Goods

    In silicone rubber compounding, this silane enables covalent crosslinking between organic silicone chains and inorganic reinforcement (such as fumed silica). Our clients dose it during the masterbatch or pre-mixing stages, tuning ratios to achieve target tensile strength, elasticity, and tear resistance. This functionalization is essential for products demanding high transparency, low compression set, and sustained heat resistance. Production must follow global standards governing elastomeric articles and comply with applicable food contact or medical use regulations where needed. Major output includes medical tubes, gaskets, automotive seals, and cable sheathing compounds.

    Industry compliance standards

    • ISO 10993-5:2009 (Biological evaluation—Cytotoxicity of medical silicone elastomers)
    • ASTM D2000 (Standard Classification for Rubber Products in Automotive Applications)
    • FDA 21 CFR 177.2600 (Silicone elastomers for food use)
    • REACH SVHC inventory (for process chemical assessment)

    Typical usage ratio

    • 0.1–1.0 phr (parts per hundred rubber); adjusted for grade, filler loading, and end-use mechanical requirements

    Downstream process integration

    • Addition during compounding or masterbatch formation, prior to press-molding or extrusion of final elastomer articles

    Final product types

    • Silicone medical tubing
    • Automotive O-rings and gaskets
    • Insulating cable sheaths
    • Consumer bakeware and seals

    6. Sol-Gel and Inorganic–Organic Hybrid Material Synthesis

    Producers of sol-gel derived coatings and hybrid materials use our silane to introduce epoxy-functional groups into silica networks. The material hydrolyzes and co-condenses with other silicates, yielding robust hybrid films and gels with tunable chemical properties. Application spans anti-corrosion coatings, functional membranes, and photonic materials. The silane enters during precursor solution formulation and must meet cleanroom and purity standards for electronics or optical uses. Dosage depends on desired density of organofunctional groups and the specific sol-gel matrix chemistry.

    Industry compliance standards

    • SEMATECH EHS 07060724A (Advanced materials qualification in semiconductor industry)
    • ISO 14644 (Cleanroom standards in specialty material preparation)
    • IEC 61249-2-21 (Halogen-free requirements in electronic coatings)
    • USP Class VI (if hybrid materials are used in pharmaceutical or medical applications)

    Typical usage ratio

    • 1–10 mol% of total silane/silicate precursor mass, adjusted to control crosslink density and target mechanical or optical characteristics

    Downstream process integration

    • Addition to sol-gel precursor blend before controlled hydrolysis and condensation; often under moisture-controlled conditions

    Final product types

    • Transparent anti-corrosion coatings
    • Hybrid sol-gel films for optical filters
    • Functionalized membrane supports
    • UV-cured electronic encapsulants
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    Certification & Compliance
    More Introduction

    (3-Glycidyloxypropyl)Triethoxysilane: Directly From the Production Line

    Real-World Production Knowledge Meets Real Chemical Needs

    Making (3-Glycidyloxypropyl)triethoxysilane starts with years of hands-on process improvement and a close understanding of what chemists and manufacturers truly expect from a silane. Working directly in production means seeing every batch through its journey, from raw materials to purified end product. Our focus always turns towards ensuring the final silane is clean, with minimal residue, and meets well-defined standards. In our plant, we follow the reaction route that anchors an epoxy functional group onto a silane scaffold, finishing with three ethoxy groups. Water content and purity shape the reliability of this compound, so we monitor and control every valve, seal, and analytical point.

    Technical Model and Specifications That Hold Up in Practice

    We manufacture (3-Glycidyloxypropyl)triethoxysilane, commonly known by its CAS number 2602-34-8, to meet industry expectations for clarity and stability. Looking at the physical product, customers find a transparent to slightly yellowish liquid. Typical batches range in purity from 98.0% to 99.5%, because customers running composites, adhesives, or coatings demand certainty. Density ranges from 1.065 to 1.075 g/cm³ at 25°C, and refractive index falls within 1.4200 to 1.4300. Moisture content tests low, under 0.1% most runs, which sidesteps unwanted pre-reactivity. Our lab engineers keep a close handle on acid number, making sure excess hydrolysis does not creep in and compromise performance on the customer’s end.

    Proven Uses in Demand

    As a raw materials producer, our phone rings with orders from customers making epoxy composites, glass fiber reinforcements, electronic encapsulation, sealants, and specialized paints. Our silane, with its reactive glycidyl group, works as a bridge between inorganic and organic surfaces. Fiberglass suppliers run our product as a primer to anchor resins to glass, yielding composites with stronger mechanical properties and better resistance to delamination. Circuit board manufacturers rely on it to treat glass cloth, improving the adhesion between the fiber and resin base. We see adhesive factories using (3-Glycidyloxypropyl)triethoxysilane to modify epoxies, so their customer’s bonds last longer and resist environmental attack. In coatings, customers report tighter crosslinking, which extends the life of paints, especially in harsh industrial spaces.

    Key Differences Distinguished by Makers

    There are multiple silanes available, but this one’s real strength sits in its epoxy functionality. Unlike aminosilanes, which bond rapidly but sometimes lack weatherability, our (3-Glycidyloxypropyl)triethoxysilane introduces an epoxy ring that creates a tight, stable link between surfaces. Coating producers point out that amino-based silanes accelerate initial cure, but over time, products grafted with glycidyl silanes resist yellowing and degradation better. Methoxy-functional silanes hydrolyze faster than ethoxy types, which can cause storage or handling issues—our customers say the ethoxy groups offer a gentler hydrolysis, so process control becomes easier and shelf life extends. Each shipment shows low color values, minimal residual solvents, and stability across transportation networks, because we believe in directly addressing these practical pain points.

    Fulfilling Special Demands Across Sectors

    Our production batches support customers across several sectors. Construction material manufacturers take repeated shipments for bonding systems used in high-performance panels and bridge composites. Electronic encapsulation plants rely on predictable viscosity and purity to guarantee their silicones mix well and provide insulation from moisture and leakage. In advanced fiber optics, the smallest impurities in coupling agents can distort the transmission efficiency—so we run final distillation and rigorous QC by gas chromatography and Karl Fischer titration.

    Leading research teams often ask for custom packaging or higher-than-standard purity. Because our lab and operations team share one wall, we can adjust process parameters to produce limited runs fine-tuned to project specs. Customers solving unique surface modification problems need more than textbook answers, so we share details on how we offset side reactions and deliver a silane that remains active but does not polymerize unexpectedly.

    Beyond the Datasheet: Handling and Real-World Use

    We learned over many years that (3-Glycidyloxypropyl)triethoxysilane reacts slowly with ambient humidity, releasing ethanol. In our factory and at customers’ sites, we store it under nitrogen and transfer in closed systems whenever possible. Mixing it into water or solvents takes gentle agitation and close pH monitoring, because hydrolysis produces a reactive silanol—mismanaging this step can cause gelling or loss of coupling activity. Composite manufacturers prefer our material for this reason: a reliable, consistent batch means less downtime in mixing tanks and better results in the finished laminate or bond.

    Feedback from operators often turns on practical points: odor, foam formation, container compatibility, and ease of pouring during blending. Because we work daily in packaging rooms, we improved drum liners and valve selections to match the chemical properties of this silane. Our team tracks trends in shipping stability throughout the year, looking for subtle effects from temperature swings and time-in-transit. If a customer reports cloudiness or phase separation, we backtrack every process step and share a factual explanation of findings.

    Regulatory and Environmental Considerations From a Producer’s Viewpoint

    We operate under strict national and international chemical manufacturing standards. This compound is not classified as a major hazard under the current GHS system, but our production team still runs routine air and liquid monitoring for trace glycidyl ethers and hydrolysis byproducts. We invest in local exhaust and closed-loop filling as a safeguard for our employees and surrounding community.

    Waste streams get treated at an on-site facility, using distillation and advanced oxidation so residues do not slip into the water table or municipal waste. Regulators inspect our storage and handling protocols—sometimes announced, sometimes not—yet these checks match standards we set ourselves years ago. Industrial waste managers on the receiving end appreciate simple, low-volume streams, which our process generates. Customers have asked if (3-Glycidyloxypropyl)triethoxysilane could fall under future REACH-style scrutiny. We believe ongoing transparency and data sharing keep all sides prepared.

    Adding Value Through Transparent Technical Support

    Our technical service team runs trial blends and pilot batches with customers. By sharing our own in-house success and failure stories, we help customers bring new products to market quickly. One partner company needed faster wet-out of glass fiber—so we shared our own mixing and curing protocols, cutting their process development timeline by weeks. If a coatings client runs into unexpected yellowing, we talk through every additive and resin in their system until the culprit turns up.

    Customers not only value our material but our willingness to share firsthand process knowledge. We provide clear spectral data, reaction schemes, and advice on best mixing practices. In epoxy adhesives, this often means starting at a ratio of 0.5–2 wt% based on total resin, followed by adjusting levels for maximum bond strength and aging stability. Users scaling up from the lab appreciate bulk packaging solutions that avoid drum residue and minimize downtime.

    Supply, Logistics, and Reliability in Real Market Cycles

    We run our own production line, not relying on outside traders or annual spot contracts. Raw material sourcing comes from direct, long-term partners in silane intermediates and ethylene oxide chemistry. This lets us commit to stable delivery even when global supply chains tighten up. We prioritize regular forecasting with steady clients, aligning batch sizes to real demand so nobody faces a stockout or expired inventory.

    Customers often remark on the consistency of our packaging, lead times, and batch reports. Our plant exports widely, but we keep first articles from each lot, archived for later analysis if issues arise. We rarely see claims or returns—most are resolved through technical support rather than by shipping back drums. End users with complex import or storage rules partner with our compliance team for smooth customs clearance and waste documentation.

    Why Direct Manufacturer Experience Matters in Silane Production

    Experience in manufacturing builds a better understanding of material variation and downstream impact. For example, many competitors run (3-Glycidyloxypropyl)triethoxysilane through expanded clay or standard distillation columns, treating the process mainly as a commodity operation. We have found that controlling trace hydrolysis byproducts through precisely timed distillation steps yields a product suitable for high-performance and research-grade uses. Sometimes that means lower throughput but greater quality assurance—our customers, especially those with demanding templating or electronics applications, say this investment pays off in end-use reliability.

    Being present at the production site also means staff can observe and rapidly fix operational hiccups. Whether pumps drip, filters foul, or a batch unexpectedly carries over water or acid residue, we spot and adjust quickly, saving time and reducing the odds that an off-spec product lands with a customer. We regularly upgrade analytical tools in our plant, adding new GC and NMR checks as analytical science advances.

    Continuous Improvement Driven by Customer Needs

    We have learned from repeated conversations and on-site visits that not every customer fits a standard profile. A glass fiber plant scaling up to new production lines in Asia requires clear, reliable instructions and robust supply. A European coatings lab pushing for greener, low-VOC systems looks for improved hydrolysis control and alternative solvents. Small batch composite shops prefer smaller pack sizes and fast, practical troubleshooting tips. Each feedback cycle feeds directly into our process reviews. If a batch presents a new impurity or an unforeseen stability issue, we trace the cause back to the reactors, improve controls, and add new data to our database.

    Technical journals cover the theoretical chemistry of silanes, but plant operators care about real-world processability and outcome. A recent trial run for a sealant manufacturer highlighted the value of our ethoxy-tailored product versus a standard methoxy analog—gel time extended in controlled conditions, allowing better end-use application and less waste. When one batch picked up trace acidity due to ambient moisture, our team traced the issue, adjusted tank purges, and eliminated further risk in future batches.

    Supporting Innovation in New and Evolving Industries

    The cable and electronics sector shows rising demand, and researchers reach out with ideas for new coupling technologies. As the group producing the silane, we support pilot lines, offer prototype container sizes, and adjust formulations to match the requirements for adhesion, dielectric strength, or stain resistance. Market trends have shifted towards tougher environmental and safety standards in recent years. We work directly with our partners to modify blending guidance for lower emissions and improved operator safety.

    Polymer scientists sometimes request our driest possible batches—so we invested in extra distillation runs and nitrogen blanketing, even at the cost of shorter drum shelf life. Batch-to-batch consistency matters, especially in sectors running 24/7 automated plants. Working under the name of our own production line means that every single improvement or complaint lands directly with the team who can act—and our customers tell us this is worth more than reseller assurances or off-the-shelf generic answers.

    Final Thoughts From the Factory Floor

    Every shipper, operator, and engineer at our site works toward a single goal—providing a (3-Glycidyloxypropyl)triethoxysilane that functions not just on paper, but reliably in tough, real-world environments. Our willingness to communicate process tweaks, answer tough questions, and deliver hands-on support rests on decades of cumulative experience. We know many buyers scan technical bulletins or supplier registries, but direct contact with the actual manufacturer ends the guesswork. Each run of silane reflects hard-earned lessons in reactivity, purity, and application performance. As long as industries rely on silane chemistry to bridge the gap between substrates and resins, we stand ready on the production line to supply what’s needed—and share what we’ve learned along the way.