Dioctyl Phthalate

    • Product Name: Dioctyl Phthalate
    • Chemical Name (IUPAC): Bis(2-ethylhexyl) benzene-1,2-dicarboxylate
    • CAS No.: 117-81-7
    • Chemical Formula: C24H38O4
    • Form/Physical State: Liquid
    • Factroy Site: No.3369 Bohai 10th Road, Lingang Economic Zone, Binhai New Area, Tianjin City, China
    • Price Inquiry: sales2@liwei-chem.com
    • Manufacturer: Tianjin Soda Plant
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    Specifications

    HS Code

    130569

    Chemical Name Dioctyl Phthalate
    Abbreviation DOP
    Cas Number 117-81-7
    Molecular Formula C24H38O4
    Molecular Weight 390.56 g/mol
    Appearance Colorless, oily liquid
    Boiling Point 384 °C
    Melting Point -50 °C
    Density 0.983 g/cm³ at 20°C
    Solubility In Water Insoluble
    Flash Point 210 °C (Closed cup)
    Odor Mild, characteristic odor
    Refractive Index 1.484–1.488 at 20°C

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

    Packing & Storage
    Packing Dioctyl Phthalate is packaged in 200 kg galvanized steel drums with tight-sealed lids, clearly labeled for chemical safety compliance.
    Container Loading (20′ FCL) Container Loading (20′ FCL) for Dioctyl Phthalate: Typically 17–18 metric tons in 200L drums or ISO tanks per 20-foot container.
    Shipping Dioctyl Phthalate (DOP) is typically shipped in tightly sealed, corrosion-resistant drums or Intermediate Bulk Containers (IBCs), protected from moisture and direct sunlight. Containers should be clearly labeled, handled with care, and transported in compliance with local and international chemical transport regulations to prevent leaks and environmental contamination.
    Storage Dioctyl Phthalate should be stored in tightly closed containers in a cool, dry, and well-ventilated area, away from heat, sparks, open flames, and strong oxidizers. Protect from direct sunlight and sources of ignition. Ensure storage containers are clearly labeled and made from compatible materials such as stainless steel or polyethylene to prevent chemical reactions or leaks.
    Shelf Life Dioctyl Phthalate typically has a shelf life of 2 years when stored properly in tightly sealed containers, away from heat and light.
    Application of Dioctyl Phthalate

    Purity 99.5%: Dioctyl Phthalate with purity 99.5% is used in PVC cable manufacturing, where it enhances electrical insulation and flexibility.

    Viscosity Grade 68 cSt: Dioctyl Phthalate viscosity grade 68 cSt is used in synthetic leather processing, where it improves coating uniformity and softness.

    Molecular Weight 390.56 g/mol: Dioctyl Phthalate of molecular weight 390.56 g/mol is used in plastic film production, where it provides optimal plasticization and durability.

    Stability Temperature 120°C: Dioctyl Phthalate with stability temperature 120°C is used in automotive upholstery manufacturing, where it ensures thermal stability during processing.

    Melting Point -50°C: Dioctyl Phthalate with melting point -50°C is used in flexible vinyl flooring, where it maintains pliability at low temperatures.

    Water Content ≤0.1%: Dioctyl Phthalate with water content ≤0.1% is used in wire insulation compounding, where it prevents hydrolytic degradation and improves lifespan.

    Color (APHA) ≤30: Dioctyl Phthalate with color APHA ≤30 is used in transparent film fabrication, where it maintains product clarity and aesthetic appeal.

    Acid Value ≤0.01 mg KOH/g: Dioctyl Phthalate with acid value ≤0.01 mg KOH/g is used in medical tubing production, where it ensures chemical inertness and biocompatibility.

    Volatility ≤0.2%: Dioctyl Phthalate with volatility ≤0.2% is used in wall covering materials, where it reduces emissions and prolongs material service life.

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    Certification & Compliance
    More Introduction

    Reliable Plasticizer Solutions: An Insight Into Dioctyl Phthalate

    Introduction to Dioctyl Phthalate from the Manufacturer’s Perspective

    Dioctyl Phthalate, most often seen by its chemical abbreviation DOP, plays a significant role as a primary plasticizer in the world of flexible plastics. In the daily work of a chemical manufacturer, DOP is a name that shows up time and again for a reason: the industry depends on its unique properties to deliver soft, workable, and resistant materials for a long list of real-world applications. Our own journey in manufacturing DOP stretches back decades, driven not just by raw numbers but by first-hand findings gained from our partners on production floors and in processing plants across the globe.

    What Sets Dioctyl Phthalate Apart?

    DOP has carved out its reputation through a combination of reliable performance, excellent compatibility, and manageable processing characteristics. When compared to many alternatives—like DINP, DOTP, or DIDP—DOP brings a flexible hand feel to PVC that appeals strongly in industries making cables, films, and synthetic leather. The smooth dispersion throughout the polymer matrix is something our own process engineers value, leading to trouble-free mixing and consistent quality batch after batch. Because DOP is less viscous than other plasticizers in the phthalate family, our production lines run clean, without the kind of clogging or uneven blending that costs time and dollars to fix.

    Our own direct experience in manufacturing DOP confirms that it settles into PVC and other resins with an efficiency that lets downstream clients realize vivid colors, clear finishes, and smooth texture without struggle. Operating plants at scale makes it clear: DOP’s relatively high plasticizing efficiency means less raw material goes further, lending economic and energy savings right at the extrusion equipment.

    Common Specifications and Reliable Performance

    From a manufacturer’s bench to finished product, customers expect a product specification they can trust. Our DOP typically runs above 99.5% purity, with acid value and moister content tightly controlled well below standardized thresholds. We recognize these aren’t just technical details—they reinforce confidence for PVC compounders and coatings producers. Viscosity range, refractive index, and specific gravity line up with globally recognized quality benchmarks, making our batches compatible with automation and precision machinery, not just small-batch mixing.

    Close attention to these specs pays off further downstream. Film and sheet producers report that consistent DOP lots support stable cooling and formatting cycles. In cables and wires, mechanical flexibility hangs on purity and uniform composition, otherwise end uses in construction, automotive, and appliance sectors run into cracking during cold exposure or shape loss under summer heat. After years tuning our process, we see first-hand how stable product properties from tank to drum translate directly into durable, appealing end goods.

    End-Use Applications and Real-World Value

    Manufacturing teams look for raw materials they can trust every hour of the shift. DOP comes through in critical sectors: wire and cable insulation, synthetic leather, footwear, flooring, and wall coverings. While some alternative plasticizers shine in specialized roles, DOP’s story stands out in large-volume plants where process repeatability and finished product flexibility mean more than theory.

    From first extrusion to years of service in a customer’s building or product, DOP delivers a blend of softness and weather resistance that influences product appeal just as much as durability. Our feedback points to DOP-packed building materials and automotive parts as having a superior hand feel and color retention, both valued by OEMs and end users. In pool liners and outdoor hoses, DOP allows for bend and twist without splitting or ugly surface whitening, keeping maintenance costs in check.

    We’ve watched trends steer towards low migration and minimal volatility, and DOP’s well-defined molecular weight lets suppliers offer goods that won’t leak or degrade quickly under pressure. For our partners in footwear, the easy processing of DOP ensures molds fill completely, small features stay intact, and color loading reaches its full potential. Uniform, flexible soles roll smoothly off the line, keeping returns to a minimum. On the production side, DOP provides a material that carries consistent gelation times in PVC, making it easier to manage ovens and coolers without constant adjustment, even during hot summer or humid winter shifts.

    Comparing DOP to Other Plasticizers

    The market asks big questions about phthalates. DINP, DOTP, and DIDP all compete in this space. Our labs track performance in various applications and, over the years, we’ve measured DOP’s plasticizing efficiency as slightly better than most non-phthalate options and nearly on par with other high-performing phthalate plasticizers. Unlike heavier options like DIDP, DOP keeps viscosity low and clarity high, which becomes apparent on any line running thin PVC film or clear flexible covers.

    While DOTP and DINP can pass tests for certain restrictions more smoothly, DOP retains a long track record for outstanding flexibility, chemical stability, and cold bend. It also meets the challenge in areas where cost and proven track record matter most. Not all companies face the same regulatory environment; for some, cost and process reliability matter as much as chemical composition. Those relying on established DOP lines continue to benefit from a global supply chain that’s robust and fine-tuned.

    The Role of DOP in Meeting Production Demands

    As manufacturers, we balance demand from repeat clients, technical compliance, and the sometimes-unpredictable swings in global markets. The decision to produce DOP at large scale came about not only because of its proven performance but also after years of direct feedback from plastics processors who trust their annual targets to a material that simply works in pressing, rolling, calendaring, and injection applications.

    Our DOP output remains consistent because we have invested directly into refining and distillation steps that ensure product meets the toughest industry standards each year. Decades of manufacturing teach us that cutting corners on purification isn’t worth the risk—every off-standard batch brings downtime, extra labor, and unhappy customers. Real investment goes into process controls and lab analysis, not just base inputs, and this commitment brings back both loyalty from major clients and solid reputation across international markets.

    In conversations with factory foremen and production engineers, key concerns always come up: will a bad lot mean machine clean-outs? Do finished goods end up stiffer or darker than planned? Experience shows that with DOP, answering these with a clear “no” is possible—so long as sourcing stays close to original specification, and as manufacturers, our attention never slips.

    Addressing Environmental and Safety Challenges

    The world’s changed vastly over the last few decades. Rising regulatory demands and consumer pressure for safer, low-emission chemicals challenge long-standing materials like DOP. As DOP manufacturers, we bear responsibility for monitoring both occupational exposures in production facilities and emissions through the entire life cycle.

    Not all solutions are instant. Years of pilot-scale modifications and large-scale implementation have shown us which emissions controls work, which solvents recirculate best, and how to keep waste to an absolute minimum. New standards in solvent recovery, dust capture, and spent catalyst management have grown from small R&D fixes to essential process steps integrated into each batch’s workflow. Through diligence, we reduce workplace and environmental risks.

    Questions about DOP’s environmental impact compared to alternatives arise frequently. It’s clear from published literature and our own impact assessments that DOP has a long residence time in certain landfill or aquatic environments. As a manufacturer, our approach relies on transparency—producing robust, fully compliant Safety Data Sheets, monitoring regulatory developments (especially REACH and local equivalents), and discussing with downstream partners about closed-loop or recycling opportunities whenever feasible.

    Finding Solutions for Sustainability

    Sustainability doesn’t mean closing down proven lines or forcing industry-wide product pivots overnight. Instead, in-house programs to optimize material use, energy consumption, and waste streams contribute meaningfully. Some customers require a switch to non-phthalate plasticizers, so we’ve diversified our own production line-up to include DOTP and alternate esters. Still, not every application can use direct substitutes without cost or performance impact.

    By encouraging dialogue with customers on end-use needs—such as product lifetime, outdoor weathering, or required softness—it’s possible to match DOP where it brings authentic value and suggest alternatives elsewhere. For high-volume, non-critical sectors, DOP maintains its advantages. In sensitive environments, such as food contact or children’s products, our internal teams closely monitor regulatory updates and shift offerings as needed.

    Continuous process refinement reduces waste and maximizes yield, trimming both the environmental and economic footprint per ton produced. Bulk handling, in-line monitoring, and long-term cooperation with responsible logistics providers push us towards safer and more sustainable distribution throughout all points of the supply chain.

    Building on Reliability and Trust

    Production of DOP at scale isn’t just a question of chemistry. It sits at the intersection of logistics, compliance, real-world testing, and ongoing customer service. Conversations with longtime clients reveal the extent to which reliability matters. Batch-to-batch consistency, shipment accuracy, and on-time delivery remain in focus because—having worked in busy factories ourselves—we know unexpected hiccups ripple down to overtime, extra crew hours, and lost revenue.

    Many of our field engineers started on the shop floor, learning the hard lessons of what happens when a drum fails inspection or when blower lines jam due to off-standard viscosity. The granular knowledge acquired over years in this environment shapes our process improvements, lab directions, and customer assurance methods. Quality assurance runs not just on paper but in hands-on equipment monitoring, random sampling, and open reporting on deviations, however small.

    Looking Forward: Innovation in Plasticizer Manufacturing

    Change in the chemical manufacturing sector happens by necessity, not by whim or abstract corporate slogans. Evolving DOP production has meant investing in analytics, automation, and continuous improvement practices. While global supply challenges or regulatory updates come quickly, our response comes from a base built on technical literacy and deep familiarity with large-volume production realities.

    Newer developments in additive blending, waste valorization, and even bio-based phthalates are all areas of active interest. That said, for large-scale processors demanding predictable handling, storage, and finished product properties, DOP’s established record continues to carry significant weight. By building collaborative forums with research partners and equipment suppliers, manufacturers like us keep the dialogue open and steer innovation toward what matters on the ground—consistent, safe, and high-performing output.

    Knowledge gained from daily operations translates into smarter technical guidance for our clients. From troubleshooting formulation issues to navigating requirements for new export markets, our technical teams channel hands-on experience into service, making sure companies choosing our DOP know exactly what to expect at every stage.

    Conclusion: The Manufacturer’s Role in a Changing Market

    The outlook for DOP isn’t static, and neither is our approach. Our place as a large-scale producer demands an accountable role in both meeting today’s needs and anticipating tomorrow’s challenges. By focusing production expertise, rigorous control, honest communication, and ongoing technical support, we help customers be confident in their material choices. Merchandise made with our DOP reflects its strengths—flexibility, durability, and appearance—made possible by careful process controls and deep-rooted technical experience gained on manufacturing floors, not just in the lab.

    With regulatory pressures rising and the call for sustainable solutions getting louder, our organization remains anchored in practical, ground-level improvements and direct feedback loops with users. At every link of the chain—from sourcing to blending to shipping—quality and trust matter most. DOP continues to prove itself where high standards and real-world performance meet, and as manufacturers, we take pride in delivering not just a product, but a dependable solution shaped by years of real experience.