Yudu County, Ganzhou, Jiangxi, China sales3@liwei-chem.com 748718781@qq.com
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Dipropyl Polysulfide

    • Product Name Dipropyl Polysulfide
    • Chemical Name (IUPAC) Dipropyl polysulfane
    • CAS No. 6228-62-0
    • Chemical Formula C6H14Sx
    • Form/Physical State Liquid
    • Factory Site Yudu County, Ganzhou, Jiangxi, China
    • Price Inquiry sales3@liwei-chem.com
    • Manufacturer Anhui Liwei Chemical Co., Limited
    • CONTACT NOW
    Specifications

    HS Code

    339094

    Chemicalname Dipropyl Polysulfide
    Molecularformula C6H14S3
    Molecularweight 182.37 g/mol
    Casnumber 19662-88-3
    Appearance Yellow to brown oily liquid
    Odor Strong, garlic-like
    Boilingpoint n/a (varies with sulfur chain length)
    Solubility Insoluble in water, soluble in organic solvents
    Density Approx. 1.05 g/cm3
    Refractiveindex 1.561 (at 20°C)
    Flashpoint Approx. 108°C (closed cup)
    Meltingpoint n/a (liquid at room temperature)
    Stability Stable under recommended storage conditions
    Mainuses Flavoring agent, chemical intermediate
    Synonyms Propyl polysulfide

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

    Packing & Storage
    Packing 1 kg of Dipropyl Polysulfide is packaged in a tightly sealed amber glass bottle with a secure screw cap, labeled for safety.
    Container Loading (20′ FCL) 20′ FCL for Dipropyl Polysulfide: Typically packed in 200L drums, 80 drums per container, with total net weight about 16 MT.
    Shipping Dipropyl Polysulfide should be shipped in tightly sealed containers, clearly labeled according to hazard regulations. Store and transport in a cool, dry, well-ventilated area away from heat sources, sparks, and incompatible substances. Comply with local and international regulations for hazardous materials to ensure safety during shipping and handling.
    Storage Dipropyl Polysulfide should be stored in a cool, dry, and well-ventilated area, away from heat sources, direct sunlight, and incompatible materials like strong oxidizers. Keep the container tightly closed and properly labeled. Use corrosion-resistant containers, such as those made from glass or certain plastics. Ensure secondary containment to prevent leaks, and avoid exposure to moisture and ignition sources.
    Shelf Life Dipropyl Polysulfide typically has a shelf life of 2 years when stored in a cool, dry, and well-sealed container.
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    Certification & Compliance
    More Introduction

    Dipropyl Polysulfide: Experience and Precision in Chemical Manufacturing

    From Raw Inputs to Reliable Outputs

    Every batch of Dipropyl Polysulfide tells a story of elemental sulfur and propyl groups combined through deliberate synthesis. We use a controlled reaction process drawing on decades of plant experience, working in closed reactors to minimize environmental impact. Monitoring each reaction step and sampling throughout production, we deliver a consistent, high-purity output with minimal byproducts. Analytical equipment, such as gas chromatography and mass spectrometry, helps us track molecular integrity at every point from initial charge to finished product. This chemical structure, deeply infused with sulfide bonds and fully saturated with propyl groups, sets the foundation for its distinctive performance in downstream applications.

    Quality That Reflects Practical Know-How

    Working in an operational setting reveals more than purity numbers. Operators experience the product’s scent, viscosity, and response to temperature during synthesis. Dipropyl Polysulfide offers a smooth, liquid consistency across a broad ambient temperature range, thanks to its balance of chain length and sulfur content. By controlling parameters such as reaction temperature and sulfur-to-hydrocarbon ratio, we prevent unwanted tars and ensure minimal color formation. Based on lab titrations and repeated trials, our most reliable grade provides a sulfur content above 40% by weight with an even distribution of dipropyl chains. This level of specification supports predictable reactivity in both chemical transformations and end-user process lines.

    Applications that Grow from Feedback

    Our customers direct the conversation. Synthetic rubber processors seek additives that punctuate the cross-linking step, improving mechanical properties without unwanted side effects. Lubricant formulators require molecules that hold up under high pressure and high temperature. Dipropyl Polysulfide has shown excellent solubility in both polar and non-polar systems, forming stable blends with synthetic base oils and organic carriers. We integrate end-user feedback into each production run, adjusting wash procedures and purification steps to match what real operations demand — not only what a spec sheet asks.

    Why This Compound Matters in the Sulfide Series

    Sulfur compounds range from fleeting dialkyl disulfides to heavier polysulfides with unpredictable shelf-lives. Dipropyl Polysulfide earns its place through balanced performance. The propyl groups anchor the molecule enough to slow down unwanted side reactions in storage, minimizing odor and volatility. Chain length and precise control of sulfur bridges determine resistance to oxidation. Lower members in the polysulfide family volatilize too quickly, carrying off sulfur content and creating environmental risks. Higher members can become waxy or unstable past certain storage periods. We avoid both extremes, producing a liquid with shelf stability measured in years, not months, supported by our internal accelerated aging studies.

    Consistency That Reduces Process Variation

    Line workers and process engineers need chemicals that behave the same way in every drum. Dosing systems benefit from the low viscosity and neat flow of our Dipropyl Polysulfide, reducing clogs and ensuring even delivery. The product’s controlled volatility means less loss to vapor phase during blending. Users avoid odor management headaches and surprise equipment maintenance, a direct result of our in-plant handling experience. All blending and filling operations take place in closed systems, protecting both worker safety and product consistency. No corners cut, because we want the same results that you want when it arrives in your storeroom.

    Environmental Responsibility at Every Step

    From an operations viewpoint, each element of manufacture calls for risk management and waste minimization. Our Dipropyl Polysulfide synthesis produces only minor residuals, which are collected for sulfur recovery rather than disposal. Effluent washes pass through in-house treatment systems built specifically to handle sulfur organics, ensuring minimal emission and regulatory compliance. Our familiarity with environmental oversight means all data, from effluent concentrations to vapor stack content, stays in house and available for full traceability. We know how regulations shift and plan ahead by keeping purity and byproduct controls tighter than what guidelines require. Years of working with local inspectors and environmental engineers inform every process upgrade and operational change.

    Safe Handling: Born from Real-World Practice

    Labels and manuals help, but nothing beats hands-on experience in safe chemical handling. Our technicians package Dipropyl Polysulfide in tamper-evident, airtight drums designed to resist impact and corrosion. Storage protocols prevent contact with reactive metals or water, lessons learned from long hours on the floor. Training programs do not stop at procedural checks; every operator understands the physical properties through sessions in mock spill response and exposure prevention. Our experience-based safeguards reduce risks to personnel and end-users alike, with incident logs and near-misses studied regularly as part of continuous improvement. In the rare event of a shipment deviation, our team responds from direct knowledge of the chemistry, not from a script.

    Comparison to Other Sulfide Additives

    Customers often weigh Dipropyl Polysulfide against dialkyl disulfides or heavier blends with higher sulfur content. Short-chain disulfides volatilize and oxidize, creating tabular reaction rates but often leading to odor complaints and rapid performance shifts. On the other end, high-sulfur tridecysulfides and other heavier blends grow unstable in storage, disrupt mixing, and can deposit insoluble materials downstream. Dipropyl Polysulfide occupies a balanced position — a moderate molecular weight delivers heat stability and shelf life, while its propyl chains remain liquid under site conditions, even in winter warehouses. In practice, processors favor it for steady reactivity and fewer interruptions. We hear from blending teams about better product homogeneity and long-term predictability compared to imprecisely mixed, higher-member polysulfide packages.

    Specifications Built on Real Analysis

    Nothing replaces walking the laboratory yourself and seeing the spectrum. Gas chromatography traces for our batches reveal a strong peak at the dipropyl polysulfide retention time, with minor peaks mapped to trace homologues that we keep below 1% total. The sulfur percentage remains within 0.5% from lot to lot, checked by independent labs as part of our quality system. Purity levels exceed the typical requirements stated by end users, a result of regular recalibration and blind sample testing. Moisture content never drifts upward, as our facilities run dehumidified storage, a nod to lessons learned from off-spec product callbacks in the past. Adjustments happen in real-time, not on a quarterly review, drawing on technician feedback and live process data. Our customers benefit not from vague claims but durable, documented control in every order.

    Backing Up Claims with Transparency

    Trust rests on demonstrated reliability. Visitors to our plant can audit any step of the Dipropyl Polysulfide workflow, from raw material receipt to final drum loading. We secure all data trails, ensuring every bottle and batch aligns with upstream source and downstream delivery. Regular third-party audits complement our own routine checks, with documentation available on request. Feedback loops reach from the warehouse back to the control center, so production never loses touch with field experience. Our approach gives partners confidence that every liter matches expectations, time after time. Problems, when they arise, spark immediate root-cause reviews shared directly with impacted users, rather than locked in a file. We anchor our reputation in openness backed by operational fact.

    Serving Key Markets with Practical Know-How

    Tire and rubber producers seek additives that give them flexibility, strength, and predictable curing. Metalworking fluids must resist breakdown and deposits. Crop protection engineers integrate organosulfur compounds for pest resistance and sulfur delivery. Each sector brings its own process quirks. We stay close to these markets by providing field trial support, sending on-site representatives for new product rollouts, and regularly updating our manufacturing methods based on customer process data. In doing so, we do not just ship product — we embed in the operational landscape, supporting both small specialty players and large global utilities. Many upgrades in our plant occurred as direct answers to persistent, field-level challenges rather than isolated lab aspirations.

    Lessons Learned Over Decades

    Plants do not forget the pain of blocked filters, drummed material that solidifies after shipment, or complaints about failing performance in harsh conditions. Each incident drives a change in our method. Early years taught us that heat-sensitive transfers demand insulated, trace-heated lines and periodic agitation. Unattended holds never serve the customer, so we commit to “batch-to-tank-to-drum” cycles within maximum safe windows, based on test data rather than production wishes. A liquid at the point of dispatch must remain so for its entire shelf life, so our specification includes cold-flow assurances, which are validated through deep-freeze sampling cycles. Preventing degradation in storage means controlling both oxygen and light exposure end-to-end, not only in the warehouse but in the container on the customer’s floor as well. These operational details cut costs for everyone down the line and keep headaches at bay.

    Placing Value on Analytical Vigilance

    Product claims rarely make up for poor analysis. We run batch certificates showing GC, IR, and elemental sulfur spectra for every customer lot, with archive access stretching back years. Study of these records lets us trace quality shifts to maintenance events, reagent changes, or environmental factors. We share trend data with regular clients so mutual visibility drives continuous improvement. Inter-lab comparison studies frustrate some producers, but we invite them. Running third-party blind tests sharpens both our analytical accuracy and our process discipline. If results ever diverge, or if a customer’s on-site checks raise issues, we offer direct analyst-to-analyst communication for rapid alignment. Open records make quality lapses nearly impossible to hide.

    Adapting Product for New Demands

    Organic synthesis continues to shift, with customers looking for greater precision and specialized function. Over time, the request count for Dipropyl Polysulfide in custom purity ranges or with tailored odor profiles has grown. We adapt purification steps — switching between distillation columns or implementing additional scrubbing and drying stages — to suit both technical and regulatory targets. Where one segment asks for highest sulfur content and no detectable tars, another might emphasize ease of cleanup after batch reaction. Rather than build arbitrary “grades,” we respond by direct consultation and tweak processes based on how the additive fits site-specific equipment. Recent years saw a rise in requests for documentation regarding environmentally critical process steps, and we provide a full trail to answer those audits. No operation stands untouched by user demand, so we stay agile and engaged throughout each cycle of improvement.

    Supporting Efficiency on the Production Floor

    Dipropyl Polysulfide runs through multiple end-use settings. Rubber processors rely on it for vulcanization, seeking the right balance of cross-link density and durability. We have documented improvements in tensile strength and product lifespan in partnered trials where product dosing followed our empirically derived guidelines. Lubricant formulators value both the anti-wear and corrosion-inhibiting attributes, frequently noting fewer formation of sludge or breakdown in their blends. Metalworking fluids appreciate reduced tool wear confirmed by field testing under controlled speed-pressure combinations. Real improvements, measured by time-to-failure, batch-to-batch consistency, and in-plant downtime, establish our value to users living with the consequences every shift.

    Addressing Regulatory and Documentation Needs

    We live in an era of rising compliance requirements. Regulators and customers both demand more data on composition, trace contaminants, and manufacturing processes. For Dipropyl Polysulfide, we supply a dossier including compositional details, traceability information back to raw sulfur and hydrocarbons, and shipment history. This transparency in documentation limits delays in approval and helps partners across industries meet their own regulatory hurdles without frustration. Our attention to detail in data management comes straight from plant experience: years where misplaced records resulted in wasted time and recalls. By integrating modern tracing systems and auto-documentation, we keep every certification up-to-date and accessible.

    Working Directly with Partners for Solutions

    Some customers encounter repetitive issues — storage-related settling, unpredictable odor during handling, or uncertain shelf life. Working one-on-one, we walk through their systems, sending technical staff to audit storage conditions and check handling steps. Solutions typically arise through simple changes: storage tanks with inert gas blanketing, shipment packaging with improved sealing, or modified ambient controls during extreme weather. Sometimes, direct adaptation of our production process fixes the issue — fine-tuning the sulfur ratio or adding passivation treatments at the point of fill. Every resolved issue finds its way into our internal knowledge base, proving useful across the entire partner base. Real progress comes from this sort of collaboration, not just from the lab bench.

    Meeting Emerging Sustainability Targets

    Lowering carbon footprint and increasing process efficiency motivates us as much as compliance. Dipropyl Polysulfide production draws from elemental sulfur, a byproduct of fuel refining, so waste streams feed the supply chain. Energy consumption stays tightly monitored across synthesis, purification, and packaging stages. We invest in heat recovery and in closed-loop water systems because we see both economic and ecological benefits borne out in site utilities data. As industry standards shift toward reduced emissions and greener chemical sourcing, user demands lead us to optimize again. We adapt quickly, having practiced waste minimization and solvent recycling long before they became commonplace. Direct measurements from our emissions slots and energy meters drive future investment choices and process improvement in ways that third-party mandates never could.

    Delivering Value Beyond Product Alone

    Over the years, we have learned that customers return not only for Dipropyl Polysulfide itself but for the hands-on advice and troubleshooting skills that come with it. We sustain long-term relationships by supporting new process introductions, sometimes sending our chemists to the field for startup supervision or troubleshooting. Being a manufacturer means never losing touch with reality — seeing where product fits, succeeds, or even falters, and relaying those experiences back into operational upgrades. Our teams discuss every aspect of use, from material compatibility to possible points of contamination and cleanup. The knowledge shared between plant and end user proves as valuable as the product moving between them. Consistency, openness, and practical support have built our reputation far better than marketing campaigns ever could.

    A Record of Continuous Learning and Improvement

    Each year brings unexpected shifts in demand, raw material quality, and regulatory constraints. Rather than resist these changes, we use them to fuel learning. Operational data, customer audits, and batch deviations feed directly into our ongoing improvement programs. Employees routinely engage in cross-training, learning both the chemistry and the practical handling of Dipropyl Polysulfide so that job site flexibility and plant understanding remain high. Every improvement finds a place in the next batch run, and no lesson learned is ever ignored or forgotten. Over time, this cycle of review and adaptation produces quieter, more reliable operations, with fewer surprises and greater long-term satisfaction for everyone relying on our product.

    Experience Sets the Standard with Dipropyl Polysulfide

    Manufacturers learn no lesson in isolation. Each order, every hiccup, and all improvements cascade across processes and impact not just us, but every customer who puts trust in Dipropyl Polysulfide. Cost savings, performance reliability, and process safety all arise not from abstract ideals, but from years of meeting everyday challenges with practical solutions. Our product exemplifies what comes from disciplined manufacture, attentive analysis, and transparent support throughout its long journey from raw materials to end-user application.