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O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate

    • Product Name O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate
    • Alias Ethyl Parathion
    • Einecs 259-218-7
    • 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
    VTB
    Specifications

    HS Code

    868142

    Chemical Name O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate
    Molecular Formula C10H12Cl3O3PS
    Molar Mass 367.6 g/mol
    Appearance Colorless to pale yellow liquid
    Odor Characteristic, unpleasant
    Density Approximately 1.44 g/cm³
    Solubility In Water Insoluble
    Solubility In Organic Solvents Soluble in most organic solvents
    Cas Number 50-29-3
    Stability Stable under recommended storage conditions, decomposes when heated
    Main Use Formerly used as an insecticide (classified as an organophosphorus pesticide)
    Toxicity Highly toxic (oral, dermal, inhalation)
    Vapor Pressure Low at room temperature

    As an accredited O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 1 kg white HDPE bottle with tamper-evident cap, labeled with hazard symbols and product details for O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate.
    Shipping O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate should be shipped in tightly sealed, chemical-resistant containers. It must be transported as a hazardous material, following all local, national, and international regulations. Ensure proper labeling and include safety data sheets. Avoid exposure to heat, moisture, and incompatible substances during transit. Handle only by trained personnel.
    Storage O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate should be stored in a tightly closed, properly labeled container in a cool, dry, well-ventilated area away from heat, sparks, and incompatible materials such as strong oxidizers. Protect from moisture and direct sunlight. Access should be restricted to trained personnel, with appropriate spill containment and safety measures in place. Use secondary containment to prevent leaks.
    Application of O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate

    Applications of O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate in Industrial Manufacturing

    We supply O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate as an advanced organophosphorus raw material, produced in compliance with rigorous industrial standards. The following application scenarios detail the most established uses of this specialty chemical in major downstream sectors, reflecting our commitment to traceable quality and authentic formulation know-how for high-precision manufacturing environments.

    1. Agricultural Pesticide Intermediate Synthesis

    Major agrochemical manufacturers rely on this compound as a critical intermediate to synthesize organophosphorus insecticides. Its chlorinated phenyl and ethylthio groups permit targeted reactivity in multiple-step syntheses, enhancing downstream formulation control for actives designed to meet the latest regulatory limits. Our technical support addresses batch-to-batch quality tracking, and formulation labs adjust addition ratios based on seasonal application requirements and product registration targets.

    Industry compliance standards

    • FAO/WHO Specifications for Plant Protection Products (FAO/WHO, latest edition)
    • REACH Annex XVII (EU Regulation 1907/2006)
    • ISO 9001:2015 certified production processes
    • China National Standard GB 38502 (Pesticide Safety and Environmental Control)

    Typical usage ratio

    • 5.0% – 22.0% of total active ingredient mass
    • Formulation chemists adjust ratios depending on insecticide type and targeted toxicity limits
    • For pre-emulsification: 7.5–12% as precursor in synthesis
    • Final inclusion dependent on post-reaction purification yield

    Downstream process integration

    • Charged into primary reaction vessel following base-catalyzed hydrolysis steps
    • Monitored by in-process HPLC and chromatography
    • Undergoes controlled condensation with nucleophile reactants for phosphonate formation
    • Intermediate is isolated before final technical grade active ingredient refining

    Final product types

    • Organophosphorus-based insecticide technical concentrates
    • Wettable powder and emulsifiable concentrate pesticide formulations
    • Custom-registered crop protection actives for rice, maize, and wheat
    • Soil-applied granule active ingredients

    2. Industrial Wood Preservative Systems

    Leading wood treatment formulators use this molecule in the synthesis of effective organophosphorus preservatives for lumber, utility poles, and railway sleepers. The compound’s molecular structure offers enhanced penetration and fixation into wood fibers under pressurized impregnation systems, targeting insect and fungal resistance. Batch documentation and traceability are required to demonstrate compliance with increasingly strict environmental guidelines on treated wood leachate and soil safety.

    Industry compliance standards

    • EN 599-1 (Durability of Wood and Wood-Based Products – Efficacy of Preventive Wood Preservatives)
    • AWPA P9 (American Wood Protection Association Preservative Standards)
    • US EPA Pesticide Product Registration for Industrial Wood Treatments
    • ISO 14001:2015 (Environmental Management)

    Typical usage ratio

    • 2.0% – 6.5% by weight, adjusted for lumber density and expected service life
    • Lower ratios for indoor furniture, higher ratios for outdoor or structural wood
    • Adjusted based on local regulatory leaching limits
    • Blended with co-biocide and anti-weathering additives as per proprietary recipes

    Downstream process integration

    • Dissolved into co-solvent carriers prior to pressure-vacuum impregnation cycles
    • Introduced during bulk mixing for preservative concentrate preparation
    • Monitored for solution stability and pH control
    • Quality control via treated wood core sampling for chemical penetration depth

    Final product types

    • Railway cross ties treated for termite and decay resistance
    • Outdoor decking and marine pile timbers
    • Industrial pallets and packaging wood preserved for export compliance
    • Utility poles and fence posts for long-term outdoor installation

    3. Chemical Warfare Agent Decontamination Reagents

    Civil defense and industrial safety organizations procure this specialty chemical as a precursor to manufacture decontaminant formulations for neutralizing organophosphorus chemical warfare agents (CWAs). Facilities integrate the raw material through in-line dosing systems designed to comply with international conventions and forensic traceability, targeting rapid on-site application or storage for emergency readiness. Production must adhere to strict safety handling and operational QC to mitigate process hazards associated with active phosphonate chemistry.

    Industry compliance standards

    • Organisation for the Prohibition of Chemical Weapons (OPCW) scheduled substance regulations
    • U.S. EPA Emergency Planning and Community Right-to-Know Act (EPCRA)
    • ISO 45001:2018 (Occupational Health and Safety Management)
    • Hazardous Waste Operations and Emergency Response (HAZWOPER, OSHA 29 CFR 1910.120)

    Typical usage ratio

    • 1.0% – 3.5% by total reagent mass in formulation fluids
    • Site-specific, based on threat level and spectrum of anticipated agents
    • Field deployment concentrates may scale up to 7.0% for rapid action
    • Calculated by chemists using stoichiometric dosage models

    Downstream process integration

    • Metered addition in blending tanks configured for personal protective equipment (PPE) and ventilation controls
    • Coupled with hydrogen peroxide or alkaline boosters as per standard countermeasure recipes
    • Final decontaminant fill-packaged into ready-to-use containers for field distribution
    • Routine QC checks for residual phosphorus and hydrolysis by-products

    Final product types

    • Liquid CW agent decontamination kits for military and civil defense
    • Emergency neutralization spray reagents for hazardous material teams
    • Portable wipe-down products for personnel and equipment decontamination
    • Decontaminant granules for fixed installation applications

    4. Specialty Flame Retardant Additive Preparation

    Manufacturers of high-performance flame-retardant formulations select this organophosphorus compound as a reactive additive in engineered plastics and wire insulation production. It supports improvements in char yield and limits surface ignition under standardized fire testing protocols. The chemical’s integration requires exact process control during copolymer additive mixing, with documented calibrations to show conformity across different polymer matrices and regulatory fire safety ratings.

    Industry compliance standards

    • UL 94 (Standard for Safety of Flammability of Plastic Materials)
    • IEC 60695-2-11 (Fire Hazard Testing – Glow-Wire Flammability Test)
    • RoHS Directive 2011/65/EU (Restriction of Hazardous Substances)
    • ISO 178 (Plastics – Determination of Flexural Properties)

    Typical usage ratio

    • 0.8% – 3.0% based on polymer weight, depending on material flammability class
    • Wire insulation requires low end of range; electronic enclosures leverage higher ratios
    • Compounding engineers adjust loadings after lab-scale fire test certification
    • Compatible with anti-migration and anti-drip additives

    Downstream process integration

    • Fed into high-temperature twin screw extruders during masterbatch compounding
    • Quality checked by thermal gravimetric analysis (TGA) and limiting oxygen index (LOI) tests
    • Blended directly into polymer melt prior to injection or extrusion molding
    • Monitored for uniform distribution to avoid phase separation

    Final product types

    • Sheathing for power and data cables
    • Fire-resistant plastic housings for consumer electronics
    • Automotive interior panels subject to FMVSS 302 flammability standard
    • Insulated connectors and switch gear for industrial electrical applications
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    Certification & Compliance
    More Introduction

    O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate: Commitment in Craft and Chemical Integrity

    Staying Close to the Product and Its Purpose

    In the business of chemical manufacturing, every compound tells a story, not only about its function but about the decisions and expertise built into its production. O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate, sometimes called a specialty organophosphorus compound, stands out because of its structure and the needs it's meeting for our partners in chemical synthesis and research. We focus on this molecule because the world around us keeps demanding more precise applications, especially where traditional options fall short. There are complexities in its makeup, and these have challenged and shaped our approach for decades.

    Walking Through the Manufacturing Process

    Chemistry leaves little room for shortcuts, especially when purity is essential. We prepare every batch with our eyes on consistency—from raw material inspection to final filtration—which requires constant attention. Chlorinated aromatic precursors react under carefully adjusted conditions with ethyl phosphorus intermediates, and the process hinges on meticulous control over reaction time, temperature, and purification. Quality control doesn’t just happen at the end; it’s woven into every stage. Lab teams run repeated analyses using gas chromatography and spectrometry, so we target each batch at >98% purity as a matter of habit and pride. It's not just compliance—it's a commitment we live out daily.

    Why Specification Matters in Real-World Use

    Our customers come from industries that don’t take chances—agrochemical development, specialty synthesis, and beyond. Much of the appeal comes from the specific reactivity of the trichlorophenyl group combined with the phosphonate ester. Ethyl substituents help dial in the balance between volatility and solubility, while the three chlorine atoms drive the molecule’s effectiveness in demanding environments. This product doesn’t act like generic phosphonates or standard organophosphates. In practice, this means developers who choose our O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate can reach isolated reactions unattainable with common alternatives.

    Understanding the Science and Our Responsibility

    Manufacturing a molecule like this calls for both discipline and creativity. The triple-chlorinated ring is not just an aesthetic detail. Each chlorine atom, positioned at 2, 4, and 5, alters the electronic properties of the aromatic system. As a result, the material shows high selectivity when used as an intermediate or active ingredient. The ethyl groups tune the molecule further, giving it an edge where thermal stability or controlled reactivity matter. This type of control can make or break a pilot project or a plant-scale run. When we talk to formulators and R&D chemists, we see them weighing critical questions—solubility in specific media, compatibility with certain catalysts, resilience under stress. Meeting these expectations year after year guides our quality and improvement efforts.

    Lessons from the Lab and Field

    Many compounds can be made in isolation, but only a few transition smoothly to large-scale production. Our journey with O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate has included regular tweaks—small adjustments to batch chemistry that translate into better reliability or safer handling. Early on, we saw contamination from hydrolysis and even subtle shifts in the product profile due to overlooked solvent residues. Over the years, our technical team revised the workup process, invested in advanced separation equipment, and built custom analytical protocols. Every lab test, every real-world deployment has shaped the way we craft the next order. Thousands of lab hours, hundreds of scale-up tests and real feedback from users convinced us that product development never ends.

    Honest Comparison: Not Every Phosphonate is Created Equal

    The world is full of general phosphonates and organophosphates, but very few pack the same blend of attributes as this compound. For example, traditional diphenyl or dimethyl phosphonates offer basic ester functionality, but lack the chlorinated backbone which confers both persistence and molecular recognition. Others, such as mono- or di-chlorinated derivatives, don’t exhibit the same robust interaction with specialized organic systems or environmental matrices. The precise fingerprint of three chlorine atoms, at these positions, directly changes how the molecule coordinates with targets in synthesis or formulation. Furthermore, standard ethyl phosphonates often fail to achieve the selectivity our clients seek when working with challenging substrates or under aggressive reaction conditions.

    In our ongoing dialogue with end users, the ability to handle harsher environments without breaking down or forming undesired byproducts comes up repeatedly. This reliability distinguishes our product from many competitors. While other compounds degrade under high temperature or reactive conditions, the robust design of O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate stands up to scrutiny. The value is not theoretical—a higher integrity in processing directly reduces costly downtime and waste for those on the front lines.

    Why Stability and Purity Become Game-Changers

    Curiosity from customers often centers on real-world performance. Many have spent years navigating inconsistent results due to unstated impurities or batch-to-batch variation with generic suppliers. Manufacturing at our level means investing in both purity and stability. Trace contaminants quickly undermine downstream reactions, especially in multi-step syntheses or formulations for regulated use. Our process seeks out water removal and trace byproduct reduction, and we don’t leave sampling to luck. Chromatograms and titration benchmarks give our chemists visibility into every lot’s true profile. It’s not simply about clear labeling; precision here means savings and certainty later.

    A few years ago, a collaborator flagged erratic yields when switching between material lots from different producers. Our material’s tight purity distribution helped resolve the inconsistency, and the boosted yields were impressive enough to convince the entire site to switch supply. This is a win we remember not because of the sale, but because it proves that reliable chemistry pays dividends in the lab and in the company ledger.

    Engaging with Regulation and Keeping Standards Personal

    No manufacturer can ignore regulations, and this sector sees standards evolving year by year. What sets us apart isn’t just regulatory compliance—it’s an ongoing dialogue with the expectations behind the rules. Analytical documentation doesn’t just collect in file drawers; those records inform continuous improvement and customer assurance alike. Every certificate and test method backs up real-world choices, not abstract promises. We update QC routines, follow developing best practices, and spend time with safety experts so that both our plant and our customers’ teams use the product responsibly.

    This isn’t about checking boxes. Practical controls in storage, shipment, and on-site handling all draw from what our own people and partners experience firsthand. Our container choices and labeling reflect real feedback from lab managers who need to trace material lots without confusion. Clear guidance on shelf life and storage temperature comes straight from our own accelerated aging trials, because we want to know firsthand how our chemical performs after months or years. We keep an open line with customers so that no doubt lingers about suitability for sensitive or high-stakes projects.

    Choices Shape Results—Why Formulation Chemistry Demands More

    For chemists looking to unlock new formulations or scale existing ones, every functional group and atom has a role to play. Our focus on compounds like O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate reflects feedback from applied researchers who need more than a theoretical match. For instance, pesticide developers choose this molecule for pilot screens because the unique halogenated profile interacts with biological targets with rare selectivity. Others—working in polymer or advanced materials research—seek its influence on cross-linking or as a reacting intermediate only this class of compound can deliver. The story behind each project comes back to the chemistry. Our veteran team keeps learning alongside our clients, using failures and breakthroughs alike to refine how we batch, analyze, and support the product.

    Real people in real environments have counted on this molecule’s qualities—solubility in both polar and nonpolar systems, stability around strong bases or acids, and shelf life that outperforms industry standards in controlled studies. These are results, not speculation, and they come from applied use far beyond the boundaries of an in-house R&D lab.

    Facing Tomorrow: How We Respond to Complexity in Synthesis

    Each new customer brief can push us to the edge of what’s routine. The needs of next-generation agrochemicals, advanced coatings, or specialty reagents push our process team toward frequent reevaluation. Years of direct engagement with chemical engineers have highlighted factors like heat management in scaled reactors and trace gas control, which smaller labs might miss. Our in-house experience with safe handling means fewer surprises for downstream users, and our ongoing technical updates help address new regulatory or performance goals.

    We’ve made investments in process automation, material tracking, and continuous training so that any increase in volume or complexity gets met with equal confidence. Ongoing partnerships with hazardous materials consultants and analytical specialists keep us honest about what works and where we can improve. This is less about technology for its own sake and more about meeting live, on-the-ground needs—whether those are for documentation, reporting, or improved environmental footprints.

    Counterpoint—What Limits Remain?

    No compound or manufacturing approach solves every problem on the horizon. O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate brings unique performance, but even it has contextually appropriate use cases and handling needs. We speak frankly with our partners about safe dosing, compatibility boundaries with base-sensitive systems, and recommended safe storage intervals. For some, this means integrating screening protocols at the development stage to avoid surprises later. In our experience, being clear about limitations earns more respect and longer-lasting business.

    Toxicity, long-term environmental persistence, and operator safety remain non-trivial topics. Our tradition—built on direct plant experience—means we never gloss over MSDS obligations or practical risk management, even if that means more upfront paperwork or planning. For example, after a thermal excursion event years ago, we worked with external safety auditors to retrain our team and update control systems. This culture of transparency runs through every batch and supports those who trust our products in their own workflows.

    Continuous Dialogue—Supporting Progress and Real Change

    Innovation rarely comes from isolation or guesswork. Every customer inquiry feeds back into our development and improvement cycles. Sometimes the most useful suggestion comes from late-night calls with a plant manager troubleshooting unexpected outcomes. Engaged partnerships drive progress and new features. Requests for more granular particle sizing, alternative packaging, or additional solvent compatibility testing have all redirected our efforts at one time or another. The points of friction—what’s difficult about handling, transferring, or analyzing this particular compound—become the starting points for our R&D and process innovation roadmap.

    Supporting chemists and engineers in the field means more than supplying raw material. We offer direct line access to our technical team for troubleshooting formulation challenges. In-house application support is standard, because we learned early that sharing our factory-tested insights saves others costly mistakes or time lost in trial-and-error. The best partnerships don’t just move product, but build a shared knowledge base for safer and more effective use. This way, those we serve know they’re getting the full measure of what our experience and efforts provide.

    Looking Back, Looking Forward

    Years in this business have taught us that products like O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate don’t just fill a catalog—they shape careers and entire fields of industrial and research practice. Behind every bottle stands decades of hard-earned expertise, tested not only in our labs but through the demanding realities faced by our clients. The investment in quality, consistency, and support is never optional. We constantly review and adapt internal targets as new application challenges and regulatory shifts emerge, ensuring we're not only meeting today’s requirements but staying prepared for tomorrow’s.

    Each successful synthesis, each minimized waste stream, and every positive outcome in a partner’s workflow traces back in part to the deliberate choices we make as manufacturers. This responsibility runs deep, shaping not only the products but the work culture, the community, and the technical dialogue we have with peers and colleagues globally.

    Why the Story Matters

    No batch leaves our facility unchecked or unconsidered. O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate is more than a molecule to us—it represents a relationship between production, science, and real-world need. Years in the trenches, facing setbacks and breakthroughs alike, reinforce why close engagement with both process and customer matters most. We measure success not only by purity level or regulatory audit outcome, but by how well we anticipate and respond to our partners’ shifting requirements.

    We committed ourselves early on to truth in description and utility over hype. The biggest compliments we receive come not from marketing claims, but from chemists and engineers who see tangible improvements in their own productivity and safety because of substance and support behind the product we make. Those wins shape our daily work, guiding the next round of process improvements, safety drills, or technical bulletins.

    Our Ongoing Commitment

    O-Ethyl-O-2,4,5-Trichlorophenyl-Ethylthiophosphonate has forced us to grow—not just through scaling and quality, but in building a practice grounded in practical experience and shared progress. Our hope is to keep pushing beyond assumptions, working with our users to tackle both well-trodden problems and the ones nobody has mapped out yet. Every step forward comes back to the chemistry: a belief that the right processes, driven by close attention and honest assessment, benefit everyone connected to the chain. Our journey continues as we produce, learn, and collaborate, batch after batch, always focused on delivering substance and reliability in every drop.