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Diethyl Benzylphosphonate

    • Product Name Diethyl Benzylphosphonate
    • Alias Benzylphosphonic acid diethyl ester
    • Einecs 210-205-4
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
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    Specifications

    HS Code

    422161

    Chemical Name Diethyl Benzylphosphonate
    Cas Number 1663-91-8
    Molecular Formula C11H17O3P
    Molecular Weight 228.23 g/mol
    Appearance Colorless to pale yellow liquid
    Boiling Point 140-142°C at 2 mmHg
    Density 1.104 g/cm³ at 20°C
    Purity Typically ≥98%
    Solubility Soluble in organic solvents (e.g. ethanol, ether)
    Flash Point 140°C
    Refractive Index n20/D 1.462
    Smiles CCOP(=O)(CC1=CC=CC=C1)OCC
    Ec Number 216-774-1

    As an accredited Diethyl Benzylphosphonate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Diethyl Benzylphosphonate is packaged in a 100g amber glass bottle, sealed with a tamper-evident cap and labeled for laboratory use.
    Shipping Diethyl Benzylphosphonate is shipped in tightly sealed containers, protected from moisture, heat, and direct sunlight. Packages comply with safety regulations and are clearly labeled as a chemical substance. Transport follows hazardous material guidelines where applicable, ensuring secure handling to prevent spills, leaks, and environmental contamination during transit.
    Storage Diethyl Benzylphosphonate should be stored in a tightly closed container, in a cool, dry, and well-ventilated area away from moisture, heat, and incompatible substances such as strong oxidizing agents. Protect it from direct sunlight and ignition sources. Properly label the container and keep it away from food and drink. Follow relevant safety and chemical storage protocols at all times.
    Application of Diethyl Benzylphosphonate

    Applications of Diethyl Benzylphosphonate in Industrial Manufacturing

    As a direct chemical manufacturer, we supply Diethyl Benzylphosphonate to downstream industries with strict technical and compliance demands. Our direct participation in customer formulation trials and process consultations ensures precise integration of this intermediate into advanced manufacturing lines. Below, we detail verified industrial applications, focusing on regulatory requirements, formulation ratios, process stages, and end-product profiles relevant to actual downstream sectors.

    1. Synthesis of Flame Retardant Additives for Engineering Plastics

    Diethyl Benzylphosphonate functions as a phosphonate-type intermediate in the synthesis of flame retardant compounds for polycarbonate, polyethylene, and polyamide engineering plastics. End users typically introduce it in the phosphorylation stage, where aromatic phosphonates undergo further transformation using process catalysts and co-monomers. This material enables manufacturers to design flame retardants with target phosphorus content and thermal decomposition profiles to meet regulatory flammability thresholds for high-performance resins used in electronics casings, automotive parts, and building products.

    Industry compliance standards

    • UL 94 (Standard for Safety of Flammability of Plastic Materials)
    • REACH Annex XVII (Restriction of hazardous chemicals in polymers, EU)
    • RoHS Directive (2011/65/EU) for electronics applications
    • EN 14582 (Determination of halogens and sulfur in polymeric materials)

    Typical usage ratio

    • Used at 0.5–3.0% by weight during additive synthesis; exact ratio depends on target phosphorus content and plastic matrix
    • Final flame retardant additive comprises 10–25% of the finished polymer blend, adjusted for desired V-0 or V-2 flammability ratings

    Downstream process integration

    • Charged during phosphorylation or transesterification in batch reactors under inert atmosphere
    • Intermediate formation phase prior to neutralization or purification
    • Blending into polymer melt using compounding extruders

    Final product types

    • Flame retardant additives for injection-molded plastics
    • Polycarbonate and polyamide compounds for electronic housings
    • Thermoplastic blends for electric vehicle components
    • Building insulation panels with regulated fire resistance

    2. Organophosphorus Ligand Synthesis for Homogeneous Catalysis

    Phosphonate moieties from Diethyl Benzylphosphonate serve as core building blocks for organophosphorus ligands deployed in homogeneous catalysis, especially for transition metal-catalyzed coupling reactions in pharmaceutical and specialty chemical production. Ligand producers incorporate the material at the early ligand-assembly stage, targeting steric and electronic properties for selective catalysis. Stakeholders demand traceable raw materials, low impurity profiles, and precise phosphorus donors to ensure batch-to-batch reproducibility and catalyst lifetime in high-value syntheses such as Suzuki, Heck, or Stille coupling.

    Industry compliance standards

    • Good Manufacturing Practice (GMP) for pharma intermediates (ICH Q7, FDA 21 CFR 210–211)
    • ISO 9001 Quality Management Systems for fine chemical manufacturing
    • REACH Article 33 for chemical traceability and notification

    Typical usage ratio

    • Reaction input loading of 1.2–1.5 molar equivalents relative to primary ligand backbone
    • Ratio tailored to final ligand geometry and intended metal-complex loading

    Downstream process integration

    • Charged at the nucleophilic substitution step in ligand synthesis cascades
    • Subjected to purification by column chromatography or crystallization post-synthesis
    • Packaged under inert atmosphere for transfer to catalyst assembly lines

    Final product types

    • Organophosphorus ligands for transition metal catalysis
    • Homogeneous palladium, nickel, or copper catalyst complexes
    • Catalytic reagents for pharmaceutical R&D and industrial scale-up
    • Specialty catalysts for agrochemical and electronic material synthesis

    3. Precursors in the Manufacture of Agricultural Fungicide Actives

    Producers of modern agricultural fungicides use Diethyl Benzylphosphonate as a key phosphonate scaffold in the synthesis of highly selective active substances. During process development, manufacturers integrate this intermediate in the construction of phosphonate-linked fungicide molecules, optimizing efficacy and environmental degradation rates. The raw material’s purity and batch homogeneity must comply with agrochemical standards, ensuring traceability when transforming into actives registered under national and international pesticide legislations.

    Industry compliance standards

    • FAO/WHO Specifications for Plant Protection Products
    • OECD Guidelines for Testing of Chemicals (No. 107/117 for partition coefficient and residue analysis)
    • EU Regulation (EC) No 1107/2009 for plant protection authorization
    • China GB 2763 Maximum Residue Limits for Pesticides in Food

    Typical usage ratio

    • Introduced at a 1:1 molar ratio relative to core heterocycle during synthesis of active intermediates
    • Adjusted 1.0–1.3 molar equivalents depending on downstream reactivity profile

    Downstream process integration

    • Added during stepwise nucleophilic substitution or condensation with heterocyclic units
    • Processed under controlled pH and solvent selection to avoid hydrolysis
    • Subjected to solvent stripping and filtration before formulation into technical concentrate

    Final product types

    • Phosphonate-based fungicide actives (e.g., phosphite or phosphonate fungicides)
    • Technical-grade chemical intermediates for crop protection
    • Registered pesticide formulations for seed treatment or foliar application
    • Export-grade fungicides for horticulture and cereal crops

    4. Synthesis of Phosphorus-Containing Plasticizers for Specialty Coatings

    Manufacturers of specialty coatings and polymers use Diethyl Benzylphosphonate as an intermediate to synthesize non-halogenated, phosphorus-containing plasticizers. These plasticizers improve the flexibility, solvent resistance, and fire retardancy of UV-curable acrylics, polyurethane coatings, and flexible PVC. Technical formulation requires tight control of phosphorus content, molecular weight distribution, and thermal stability. Process engineers specify input ratios and process conditions allowing downstream customers to meet product standards for regulated construction, transport, and consumer market applications.

    Industry compliance standards

    • EN 71-3 (Migration of certain elements, for coatings on toys and childcare articles)
    • EU Regulation (EC) No 1272/2008 on Classification, Labelling and Packaging (CLP) of chemicals
    • ASTM D3421 (Plasticizer content in plastics)
    • ISO 16140 (Performance testing in coating chemical analysis)

    Typical usage ratio

    • Loaded at 5–15% as a monomer or intermediate in the synthesis of phosphate plasticizers
    • Plasticizer addition to final resin blend typically ranges 2–30% by weight, depending on polymer and regulatory limits

    Downstream process integration

    • Reacted with alcohols or glycols under controlled esterification
    • Integrated prior to cross-linking or curing in specialty coatings production
    • Added during hot-melt compounding for flexible polymer systems

    Final product types

    • Phosphorus-based plasticizers for PVC and polyurethane
    • UV-curable coatings for flooring, automotive, and consumer electronics
    • Fire-resistant polymer films and textiles
    • Flexible construction sealants and adhesives
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    Certification & Compliance
    More Introduction

    Diethyl Benzylphosphonate: A Closer Look from the Manufacturer’s Perspective

    The Realities of Manufacturing Diethyl Benzylphosphonate

    From inside the factory, the process behind every drum of Diethyl Benzylphosphonate is tightly linked to real-world chemistry and hands-on labor. Our production crew, with over a decade of practical experience, watches every batch as closely as a farmer tracks the weather. We know this compound’s journey from raw feedstock to finished product isn’t a matter of repeating textbook reactions; it’s a story of constant adjustment, troubleshooting, and maintaining high standards.

    Out here, we don’t have room for vague words or flowery marketing. People who buy Diethyl Benzylphosphonate from us expect a dependable product. They need clear-cut answers: what does this material really do, how clean is it, what separates it from what other chemical houses are selling, and how can they make use of its special structure?

    Why Diethyl Benzylphosphonate Matters in Our Lineup

    Diethyl Benzylphosphonate carries weight for many clients who work in fine chemicals, flame retardants, and advanced materials. As the manufacturer, we don’t just dump a bottle of liquid into a drum and send it off. Each batch comes from a reaction built around benzyl chloride and triethyl phosphite, usually in a solvent system that keeps things flowing while limiting contamination. Quality control samples are drawn straight from the reactor and analyzed against our internal specs: clear liquid, pale color, high purity. Our typical model specification holds the phosphorus content within a tight range because too much drift means customers face waste—or failed downstream reactions.

    The issues we see most often come from tiny upsets: a slightly different catalyst grade, a change in solvent, raw material inconsistencies, or ambient temperature shifts. Other manufacturers might just blend out off-spec material or ignore the fine details. We don’t. Every tweak, every change in our raw stock shows up somewhere in the product. Our team reviews every production report, compares chromatograms, and talks through small deviations. This work isn’t done because of a brochure claim—it’s the difference between a shipment that passes your quality check and one that ends up sitting in your warehouse, useless.

    Where Users Rely on Factory-Grade Product

    Diethyl Benzylphosphonate isn’t a major commodity, but for those who use it, the details make or break their process. Labs working on organophosphorus synthesis count on the right degree of substitution. Fire safety teams, looking to formulate next-generation flame retardants, want a product that behaves precisely in polymer matrices. Agrochemical developers sometimes choose it for its phosphorus reactivity, crafting intermediates that push product performance into new territory. Whenever someone comes back with an order, they’re betting their project on a supplier whose process stands up batch after batch.

    What we often explain to customers is this: on paper, many suppliers list similar purity figures, but that’s not the whole truth. Experience confirms that surface-level data points can mask deeper quality issues. How stable is the color over time? Does a slight impurity accumulate in downstream steps? What’s left after evaporation? These details matter for a processor making crop protection intermediates or a research chemist designing ligands for catalysis.

    How Specifications Shape Real-World Application

    We built our main product around a clear, pale yellow liquid with assay typically above 98%. The structure, C11H17O3P, isn’t just a formula to us. Water content gets checked methodically because hydrolysis ruins usability. We maintain tight controls on acidity and elemental phosphorus levels. Impurities—whether from feedstock or side reactions—are tracked batch to batch, with each lot compared to internal standards we’ve developed through years of combined lab and factory experience.

    People often ask what truly sets our Diethyl Benzylphosphonate apart. They’ve tried samples from brokers that don’t dissolve the way they should, or encountered suspiciously fast yellowing in storage. Small producers sometimes cut corners on distillation or skip the purity checks. For us, the difference isn’t marketing—it’s knowing your polymer pilot line won’t plug up with undetected tar, or your flame retardant won’t fail combustion tests because of unseen instability. Maintaining high actual purity, with consistent physical properties and minimal impurity burden, makes the difference in a demanding synthesis lab or a scale-up facility.

    The Road to Quality: Experience in Every Batch

    This isn’t an industry where generic process descriptions suffice. Our operators and engineers know that if you rush a reaction or misjudge temperature, phosphorus esters can decompose or darken. Quality control technicians obsess over details: from titrations to NMR, every product drum is matched to a reference batch. Creating a repeatable process for Diethyl Benzylphosphonate was never simple, and it took years of refining procedures while learning from small setbacks and customer feedback.

    Even small operational changes—like altering the method of introducing reagents to the reactor—change yield and impurity profiles. We track laboratory deviations and production anomalies. If a sample shows even a slight shift in UV absorbance or impurity peak, we rerun tests, engage the team for root-cause investigations, and only release material that earns the highest marks. Our chemists have seen every shade of setback: off-odor, gradual darkening, sluggish reactivity, separation problems in downstream processing. Every issue is a lesson built into our current process.

    Comparing Diethyl Benzylphosphonate to Other Organophosphorus Compounds

    Buyers sometimes compare Diethyl Benzylphosphonate with triethyl phosphite, dibutyl phosphite, or other benzyl phosphonates. While there’s family resemblance, the differences show immediately in real-life handling. Triethyl phosphite and dibutyl phosphite differ both in reactivity and compatibility; a manufacturer can’t just swap them into the same process and get the same results. Our product’s benzyl substitution changes its behavior—especially in coupling and protection reactions, and in use with certain resin or flame retardant matrices.

    From our end, every structural change means a new headache if you don’t manage the process deviations. The phosphonate ester group shows subtle differences in stability, storage, and reactivity compared to phosphite esters or phosphates. Downstream users—especially those working at scale—share stories of process halts after trying the “wrong” phosphorus reagent, or subtle shifts in color/reactivity that cost time and money. Each time, we return to our own process notes to help them troubleshoot.

    Addressing User Challenges: Solutions from the Factory Floor

    Most phone calls from clients start with a technical problem on their line. Sometimes it’s a reaction that stalls, polymer that clumps, or fire retardant tests that miss a key metric. Chemists who rely on Diethyl Benzylphosphonate want answers with substance. Here’s how our experience answers those calls:

    We’ve faced more than one situation where a client, frustrated with unreliable product from resellers, sends samples that don’t meet spec. Our technical service digs into batch records, runs comparative analysis, and sometimes invites clients to visit the plant to see production up close. These collaborations help them see why product made under real manufacturer discipline usually ends up a better fit.

    Thinking Beyond the Sale: Responsibility in Chemical Manufacturing

    Responsible chemical making doesn’t stop at shipping. We hear regularly from research groups and industrial processors who ask detailed questions about impurity breakthroughs, trace elements, or recycling options. Over the years, we have invested in improving our analytical capability and reducing waste in our process. Our management encourages frontline workers to spot issues before they hit the loading dock.

    We’re also building a long-term relationship with regulatory agencies and industrial partners. From registering products for compliance in sensitive markets, to tightening up process documentation, we keep the bar high. All of this, invisible in the drum, comes from our belief in being a real partner—not just today, but long after the order leaves our gate. That’s what separates a manufacturer rooted in the actual chemistry from faceless intermediaries.

    Lessons from the Factory: Why Quality Remains the Top Priority

    What puts our Diethyl Benzylphosphonate above brokered commodity grades isn’t only about technical compliance or a number on a spec sheet. It’s the practical results—batches that don’t leave behind residue, color, or smell; products that incorporate smoothly into demanding applications; lots traced from raw material to finished shipment. Customers who’ve used inconsistent products elsewhere often notice less yield loss, fewer byproducts, and easier scale-up when they switch to us.

    Each operator on our line knows the impact of missed details. Having trained chemists on-site isn’t just for show. It’s because every unforeseen process hiccup means a tougher time for the end user. We keep fresh eyes on the process logs, handing down manufacturing experience to new staff, and never assuming we’ve learned it all. Even tiny improvements—streamlined filtration, better materials handling, or more detailed batch tracing—cut problems before they start.

    Moving Chemical Manufacturing Forward

    The future for specialized phosphorus chemicals lies in making safer, higher-value, and better-documented products. We are always adjusting our process as new applications emerge. Every time a research group publishes a new synthesis involving Diethyl Benzylphosphonate, our technical lead reviews the details, looking for possible improvements or issues. Experience in the factory feeds into technical advice we offer—like optimal addition rates for complex coupling reactions or methods to remove trace contaminants.

    Environmental standards and customer expectations both rise year by year. We no longer compete only on price or headline purity. People expect responsible sourcing, minimal waste, and a transparent, continuous thread from raw material to finished product. With every shipment, our team stands by our track record of stability and innovation.

    Making the Case for Experience-Driven Chemical Production

    Customers frustrated by supply chain noise and resold products find relief in coming to the source. By working directly with the manufacturer, buyers access deep process knowledge. Our team invests time following up with users—not just to collect positive stories, but to fix anything that’s gone off in a new application. The aim isn’t a sale; it’s trust built through performance by treating Diethyl Benzylphosphonate as more than a generic commodity.

    Having shipped to labs, pilot plants, and large-scale processors, we know the questions don’t stop at delivery. Product information, application advice, and troubleshooting are all drawn from a production team that lives with the chemistry every day. This approach earns loyalty and sets a higher industry standard. Looking ahead, that’s how we’ll keep Diethyl Benzylphosphonate—and all our products—a step ahead: by keeping smart hands on the controls, real dialogue with users, and an eye on every detail that shapes final outcomes.