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(1,4,5,6,7,7-Hexachloro-8,9,10-Trinorborn-5-En-2,3-Ylenebismethylene)Sulfite

    • Product Name: (1,4,5,6,7,7-Hexachloro-8,9,10-Trinorborn-5-En-2,3-Ylenebismethylene)Sulfite
    • Alias: Chlorothalonil
    • Einecs: 204-118-5
    • Mininmum Order: 1 g
    • Factroy Site: Yudu County, Ganzhou, Jiangxi, China
    • Price Inquiry: admin@ascent-chem.com
    • Manufacturer: Ascent Petrochem Holdings Co., Limited
    • CONTACT NOW
    Specifications

    HS Code

    927191

    Iupac Name (1,4,5,6,7,7-Hexachloro-8,9,10-trinorborn-5-en-2,3-ylenebismethylene)sulfite
    Common Name Endosulfan
    Cas Number 115-29-7
    Molecular Formula C9H6Cl6O3S
    Molecular Weight 406.92 g/mol
    Appearance Colorless to brown crystalline solid
    Melting Point 74-79°C
    Density 1.745 g/cm³
    Solubility In Water 0.32 mg/L at 25°C
    Vapor Pressure 7.6 x 10^-7 mmHg at 25°C
    Logp 4.74
    Stability Stable under recommended storage conditions
    Flash Point Non-flammable
    Main Use Insecticide and acaricide

    As an accredited (1,4,5,6,7,7-Hexachloro-8,9,10-Trinorborn-5-En-2,3-Ylenebismethylene)Sulfite factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The chemical is packaged in a sealed, amber glass bottle containing 250 grams, clearly labeled with its name, CAS number, and hazard warnings.
    Shipping Shipping of **(1,4,5,6,7,7-Hexachloro-8,9,10-trinorborn-5-en-2,3-ylenebismethylene)sulfite** requires secure, sealed containers, compliant with hazardous materials regulations. The chemical should be clearly labeled, accompanied by a Safety Data Sheet, and protected from moisture, heat, and physical damage during transport. Follow all applicable local, national, and international shipping guidelines.
    Storage Store (1,4,5,6,7,7-hexachloro-8,9,10-trinorborn-5-en-2,3-ylenebismethylene)sulfite in a tightly sealed container, in a cool, dry, well-ventilated area away from heat, ignition sources, and direct sunlight. Keep away from incompatible substances such as strong oxidizers, acids, and bases. Ensure the storage area is clearly labeled and access is restricted to trained personnel. Use secondary containment in case of leaks or spills.
    Application of (1,4,5,6,7,7-Hexachloro-8,9,10-Trinorborn-5-En-2,3-Ylenebismethylene)Sulfite

    Applications of (1,4,5,6,7,7-Hexachloro-8,9,10-Trinorborn-5-En-2,3-Ylenebismethylene)Sulfite in Industrial Manufacturing

    As a direct manufacturer, we supply (1,4,5,6,7,7-Hexachloro-8,9,10-Trinorborn-5-En-2,3-Ylenebismethylene)Sulfite for advanced specialty industries. Our material supports highly specific applications, driven by validated industrial processes, formulation needs, and regulatory demands. Below we detail core downstream scenarios, with full process transparency for commercial-scale customers.

    1. Crop Protection Intermediates for Specific Insecticide Synthesis

    Leading agrochemical producers employ this compound as a chlorinated sulfite intermediate during synthesis of targeted non-systemic insecticides. The compound provides stability in the key condensation and cyclization stages, controlling product selectivity and functional group integrity under precise reaction conditions. Material purity, trace residuals, and input ratios directly impact product registration and field performance.

    Industry compliance standards

    • FAO/WHO Specifications for Plant Protection Products
    • China GB 20810—Insecticide Intermediates for Agricultural Use
    • REACH Regulation (EC) No 1907/2006 import/export registration
    • ISO 17025-certifiable analytical quality control

    Typical usage ratio

    • 10–20% of total intermediate reaction mass by molecular weight; actual ratio set by target insecticide pathway and impurity threshold

    Downstream process integration

    • Feedstock addition to core condensation reactor, followed by controlled thermal cyclization and purification
    • Intermediate transfer under closed handling with online GC monitoring
    • Used prior to final active ingredient formulation—step critical for selectivity

    Final product types

    • Active insecticide ingredient for formulated suspensions
    • Granular pesticide premixes
    • Registered technical concentrate for agricultural application
    • Bulk intermediates for multi-step synthetic crop protection agents

    2. Specialty Polymer Stabilizer Additive in High-Durability Plastics

    Producers in the plastics industry add hexachlorinated sulfite compounds during compounding of engineering resins that demand exceptional environmental and thermal stability. This molecule acts as a free radical scavenger and halogen-based stabilizer for polyolefins and certain PVC blends. Its impact on long-term aging, discoloration inhibition, and profile retention enables reliable high-performance plastics in demanding use environments.

    Industry compliance standards

    • RoHS Directive 2011/65/EU (Restriction of Hazardous Substances for Electrical/Electronic Equipment)
    • UL 94 Flammability Rating for Plastics
    • ASTM D2565 (Outdoor Weathering of Plastics standards)
    • GMP for Additives (per EU Regulation (EC) No 2023/2006 for food contact grades as applicable)

    Typical usage ratio

    • 0.2–2.5% by resin weight; dependent on polymer type and target stabilization/warranty duration

    Downstream process integration

    • Dry blend or masterbatch addition into compounding extruder ahead of melt processing
    • Melt homogeneity assessment via online rheometry/QC
    • Integrated prior to pelletization and downstream molding or film extrusion

    Final product types

    • Outdoor-rated wire and cable sheathing compounds
    • High weatherability engineering plastic parts (automotive, building materials)
    • Protective films for geomembrane or solar applications
    • Weather-resistant window and façade profiles

    3. Halogenated Organic Intermediate in Pharmaceutical Synthesis

    API manufacturers utilize this hexachlorinated intermediate in the synthesis of complex halogenated frameworks for specialty pharmaceuticals, particularly where persistent chloro-cage structures are required. Its high reactivity and controlled fragmentation under mild conditions are central to introducing unique moieties with precise spatial orientation, which cannot be accessed by simpler chlorinated compounds. Every batch undergoes dedicated trace-level impurity screening as required for human-use regulatory submission.

    Industry compliance standards

    • ICH Q7 GMP for Active Pharmaceutical Ingredient Manufacturing
    • USP/NF and EP monograph compliance for impurities handling and solvent residues
    • US FDA 21 CFR Part 211 for Drug Product Manufacturing
    • EudraLex Volume 4 Annex 8 (Intermediates for Medicinal Products)

    Typical usage ratio

    • 5–18% of molecular input for specialty APIs; defined by synthetic route structure and stage-yield optimization

    Downstream process integration

    • Timed intermediate addition to closed high-purity reactors with inert gas purge
    • Used after core coupling step, prior to terminal deprotection/hydrolysis or chiral resolution
    • Batch tested for total halogen, sulfur, and residual solvents prior to cleanroom transfer

    Final product types

    • Advanced pharmaceutical intermediates for oncology and anti-inflammatory APIs
    • Sterile injectable-grade intermediates (upon further downstream synthesis)
    • Chlorinated building blocks for proprietary NCE development
    • Reference standards for regulated laboratory use

    4. Industrial Flame Retardant Precursor in Thermoset Composites

    Leading formulators in the thermoset market rely on this substance as a reactive flame-retardant building block during hot-cure resin synthesis. By introducing a high density of covalently-bound halogen and sulfite groups, the precursor ensures regulated smoke toxicity and drip performance after combustion. Accurate dosing during pre-polymerization maximizes fire rating certification while minimizing migration risk in end-use components.

    Industry compliance standards

    • UL 94 V-0 and V-1 ratings for thermosetting plastics
    • EN 45545–2 for railway rolling stock materials
    • IEC 60695–11–10 Fire Hazard Testing
    • SbD (Safe-by-Design) requirements for European construction market entry

    Typical usage ratio

    • 3–9% w/w in final thermoset resin composition; process laboratories adjust based on target LOI and physical mechanical requirements

    Downstream process integration

    • Added to resin pre-polymer batch prior to curing agent and reinforcement insertion
    • Homogenized with polyol or phenolic resin base; monitored for uniform distribution via FTIR
    • Integrated before mold casting, followed by post-cure oven cycle

    Final product types

    • High-performance fire-resistant circuit board laminates
    • Structural composites for transit vehicles
    • Engineered flat panels requiring flame classification
    • Protective enclosure parts in industrial electronics

    5. Process Control Reagent for Analytical Chemistry Standards

    Accredited analytical service providers and certified reference material producers use this material as a process control reference and as a test challenge agent. It offers unique multi-halogenated structure for instrument calibration, trace analysis validation, and troubleshooting of method-specific parameters (e.g., recovery, matrix interference, and specificity) in advanced chromatographic and spectrometric systems. Its defined spectral and analytical fingerprint enables repeatable, QA/QC-standardized measurements across international labs.

    Industry compliance standards

    • ISO 17034–2016 Reference Material Producer Accreditation
    • ISO/IEC 17025 Laboratory Testing and Calibration Accreditation
    • EPA SW-846 Method 8270 for Semi-Volatile Organics
    • EU Regulation (EC) No 333/2007 for trace contaminants in industrial matrices

    Typical usage ratio

    • 0.5–10 mg/L in standard solution; actual dose depends on instrument sensitivity and matrix complexity for method calibration

    Downstream process integration

    • Dissolved directly in target analytical matrix for spike recovery experiments
    • Added to extraction solvent as QC marker in LC-MS/MS, GC-MS protocols
    • Used for inter-laboratory proficiency testing rounds and method development

    Final product types

    • Certified analytical standards and reference materials
    • Matrix-matched calibration and quality control reagents
    • Traceability solutions for regulatory reporting labs
    • Environmental monitoring system controls

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    Competitive (1,4,5,6,7,7-Hexachloro-8,9,10-Trinorborn-5-En-2,3-Ylenebismethylene)Sulfite prices that fit your budget—flexible terms and customized quotes for every order.

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    Certification & Compliance
    More Introduction

    Introducing (1,4,5,6,7,7-Hexachloro-8,9,10-Trinorborn-5-En-2,3-Ylenebismethylene)Sulfite

    Decades of close work with advanced organic and inorganic chemical production have given us a practical understanding of what truly sets a chemical apart in demanding industrial applications. (1,4,5,6,7,7-Hexachloro-8,9,10-Trinorborn-5-En-2,3-Ylenebismethylene)Sulfite, often recognized in our production facilities by its unique structure and function, represents a distinct achievement in precision chlorinated cyclic chemistry. Our teams blend technical experience in synthesis, process control, and raw material sourcing to achieve a consistently reliable product that handles the requirements of our customers.

    Commitment to Structured Chemistry

    The synthesis of this compound demands a rigorous approach. Chlorinated norbornene structures bring complexities that challenge even established chemical engineers. Every batch that leaves our gates draws from practical knowledge—selecting only highly purified feedstocks, carefully controlling temperature gradients, and carefully addressing byproduct removal. Over the years, our manufacturing floor veterans have developed a feel for anticipating how minor variations in raw material quality or processing can trickle down into product purity and downstream performance. These aren’t textbook lessons; they’re learned by years of hands-on corrections and direct customer feedback.

    Between the raw chlorination step, cyclic rearrangement, and bismethylene sulfite substitution, each process requires active attention from operators trained on the nuances of yield optimization and impurity reduction. We refine every run through extensive in-line monitoring and cap off each lot with methodical lab validation. Drawing on the actual data from our analytical teams—GC-MS, NMR spectroscopy, titration—helps us confidently ship material that meets tight performance benchmarks set by real-world end users, not just abstract industry standards.

    Understanding the Model and Specifications Beyond the Data Sheet

    We identify our product through an experienced lens, not simply by a lot number or registry entry. Specifications rely on more than certifying a melting point or purity; they reflect an ongoing relationship with feedback from our industrial collaborators. Our typical specification tightly controls for chlorine content, ensures the absence of residual solvents, and sets limits on non-volatile matter. Yet experience warns us: numbers on certificates only tell a slice of the truth.

    For our engineers, consistency is king. Each drum, pail, or tanker arriving at a facility must behave similarly, no matter the scale—from gram-scale laboratory synthesis to tonnage-level polymerizations. Achieving this required years of refining process repeatability, implementing robust QA sampling at both the micro and macro levels. Customers return to us when their performance on the production line matches the pilot data; that kind of trust only builds over time, after plenty of batches have proven their mettle under pressure.

    What You Get with Our Material

    Not every shipment looks exactly the same—nor should it, if real-time needs and application demands shift. We keep channels open with users in various sectors to ensure the product we deliver matches the changes they see on their end. Our modes of delivery accommodate packaging for environmental safety but don’t ignore the need for ease of access and handling. We listen closely when customers report subtle differences: color variability, viscosity shifts after prolonged storage, or impact of humidity on unpacked material. Fielding those calls and troubleshooting on the fly shapes how we optimize storage, logistics, and even packaging design.

    We also draw on cross-departmental expertise: production supervisors confer with R&D chemists when products destined for sensitive syntheses or highly regulated environments require even tighter impurity controls. This communication loop lets us go beyond simply matching a written specification. We respond to recurring field observations, such as improved performance from a batch with slightly adjusted crystallinity, by refining our protocol for future runs. These real-use insights often do more to define “specification” than any formal document.

    Applications and Practical Uses—What We’ve Seen in the Field

    Our product plays a role in specialized reactions where conventional alternatives cannot replicate the same level of selectivity or compatibility. In polymer manufacture, its integration has helped customers achieve targeted molecular weights and prevent side reactions notorious for gumming up reactors. Some clients use it in advanced agrochemical intermediates production due to its chlorine content and cyclic structure, while others apply it as a building block in specialty flame retardant formulations. Experience on the customer support side yielded insights where our material contributed to increased yields—our technical team fielded calls about process interruptions, only to discover that switching to our carefully controlled batches led to fewer unexpected precipitates, smoother reactions, and less need for subsequent rework.

    Teams in specialty coatings reported reductions in off-odor and improved color stability, citing feedback that couldn’t have been anticipated by reading just a list of specifications. In one case, a client in electronics fabrication required extremely low trace metal contamination. We worked hand-in-hand with their engineers to track raw material origins and launch an additional purification step, ensuring their performance held up in demanding end-uses. These types of collaborations teach us more than any external audit; they drive continual evolution in how we control, package, and support our product.

    Where It Stands Apart—A Direct Comparison

    Ask any manufacturer who routinely switches suppliers: not all materials with the same name behave alike. Over the years, we’ve inherited customers who tried competitor grades of this compound and ran into issues. Sometimes, issues arose from a higher proportion of non-cyclic byproducts, producing lumps in mixers or clinging to vessel walls during heating. Others struggled with solubility drift, where minor impurities slowed integration with solvents, spiked viscosity, or risked phase separation.

    We recognize these pain points aren’t solved by catalog pledges or generic certificates. Our reputation grew because our customers told us directly: your material dissolves cleaner, blends more predictably, and won’t surprise us with hidden batch-to-batch variability. One client described the difference as “quiet”—their equipment ran more evenly, with less operator intervention, simply because subtle process variables had already been anticipated and managed. Raw materials often hold the key to plant stability; we take this responsibility seriously.

    We don’t assume users will run our product in sterile, controlled environments. Field conditions, weather, and differences in pre-blending or tank storage all affect outcomes. Years ago, a client’s outdoor storage tanks saw a seasonal spike in moisture intrusion. They flagged an uptick in caking after unloading. We listened, traced the specific interaction between ambient moisture and our packaging, and retrofitted an additional sealing layer. Complaint calls for that issue dropped sharply the next year. Resolving these real-world hurdles brings our product beyond a line on a spreadsheet.

    Keeping Pace with Industry Trends and Regulatory Change

    Regulatory supervision has only tightened over time, affecting both handling and permissible applications for specialty halogenated compounds. We stay closely connected to ongoing reforms—REACH in Europe, TSCA in the United States—because waiting for market upheavals can leave both us and our clients scrambling. Our engineers frequently liaise with compliance professionals to evaluate permissible content, adapt labeling, and ensure traceability all along the supply chain. This discipline extends to supplier qualification and internal record-keeping; it’s ingrained in our daily operations and product release procedures.

    As sustainability concerns shape purchasing, more buyers care about not just what is in the drum, but also how it got there. Our process design has evolved in step. Solvent recycling, closed waste loops, emission reduction measures—these aren’t marketing slogans; they stem from operator initiatives, practical site improvements, and ongoing investments in scrubber and containment technology. We also keep an aggressive campaign to reduce off-spec production, not by ramping up rework or disposal, but by smarter process feedback and better instrumentation that lets us course-correct in real time. Building trust means showing stewardship, not just meeting minimum thresholds.

    Why Our Experience Matters for Your Process

    Chemistry is tangible—process hiccups ripple throughout a facility quickly. When a customer decides to source from us, they get a partner who takes observed outcomes to heart. We base our improvements less on abstract models and more on real experiences. Feedback—positive and negative—fuels our next wave of process fine-tuning. If a customer records a discoloration issue in their blend, we trace shipment records, reanalyze samples in-house, and adjust agitation or filtration as needed on future runs. Staying responsive to the details helps prevent recurrence.

    Over time, we’ve seen how seemingly minor variances—slight shifts in particle granularity, shelf-life stability, or resistance to atmospheric degradation—can ripple across entire production campaigns. Customers who depend on steady throughput can’t absorb surprises without impacts to quality or bottom line. We cultivate a mindset of precision not just because it looks good in external audits, but because supporting our customers’ processes drives everything from plant uptime to customer loyalty. That’s built one batch, one troubleshooting call, one successful startup at a time.

    Building Knowledge from Cumulative Experience

    Technical literature lays out the fundamentals of a chemical’s properties and suggested uses, but it rarely captures what happens day-to-day on a production floor or in shipment. We refine our approach with each cycle, benchmarking not against generic guidance, but direct user reports and trends from countless lots moving through various sectors. Teams regularly share case notes: reports of non-homogeneous blending in large-scale polymerization, post-blend filtration loads, and real-time corrections needed when processes deviate from plan. These observations steer our adjustments more than external research or off-the-shelf recommendations.

    Our continuous improvement cycle leans on these cumulative lessons—see an uptick in requests for bulk tank deliveries, and we investigate tank truck cleaning methods; field a rise in fine particulate residues and we recheck filtration media or tweak drying curves on the shop floor. These careful behind-the-scenes changes aggregate into what customers receive as a smoother, more predictable chemical—and form the backbone of our reliability.

    Collaborative Problem-Solving in Action

    Problems are inevitable in real-world production, especially with complex, high-purity intermediates. What matters isn’t a flawless production record but how effectively issues are addressed. We encourage ongoing communication channels with all users—from formulation chemists in multinational plants to independent process engineers running one-off trials. A customer once called us about unexpected residue forming after weeks of storage in their facility; our technical support quickly cross-referenced prior batch data, replicated the storage conditions, and made adjustments to moisture controls in the subsequent production run. Fast responses and clear fixes mean our partners experience less downtime and learn with us as we refine process variables.

    Our teams treat support as ongoing interaction, not occasional troubleshooting. Adjustments—tighter screening of certain raw materials, changes in crystal habit, improvements in packaging—have come directly from user-identified needs. It’s one thing to list a portfolio of technical features; converting those features into robust, field-ready performance calls for attention to the hard-won wisdom of practical, in-use results.

    Looking Ahead—How Experience Drives Evolution

    We don’t claim perfection, nor do we rest on recent improvements. The interplay between operator skills, customer knowledge, and ever-tightening regulatory controls guarantees a moving target. We see adaptation to changing environmental or legal requirements as common sense. Our investment in both people and process technology grows from simple necessity—plants that forget to improve inevitably lose ground to those that demonstrate consistency, adaptability, and transparency.

    Experience tells us that as applications for this compound evolve—expanding into new polymers, more advanced coatings, or precise agricultural uses—creative process refinement, open feedback, and a hardwired culture of collaboration will continue to define success. Our chemical won’t always be the cheapest or the first on a new customer’s shortlist—but it consistently proves itself where performance must meet real-world, on-the-ground challenges. We stake our confidence in each batch not on promises, but on the repeatable reliability of daily, hands-on expertise shared across our teams and our customers. This single-minded approach—close listening, constant refinement, and authentic engagement—remains the foundation for every container we load and ship.

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