Dibasic Acid

    • Product Name: Dibasic Acid
    • Chemical Name (IUPAC): Adipic acid
    • CAS No.: 6938-94-9
    • Chemical Formula: H2A
    • Form/Physical State: White Crystalline Solid
    • Factroy Site: No.1788, Development Road, Ruian Economic Development Zone, Ruian, Wenzhou, Zhejiang
    • Price Inquiry: sales3@ascent-chem.com
    • Manufacturer: Huafon Group Co., Ltd
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    Specifications

    HS Code

    464747

    Chemical Name Dibasic Acid
    Molecular Formula C6H10O4
    Molar Mass 146.14 g/mol
    Appearance White crystalline powder
    Solubility In Water Moderate
    Melting Point 128-132°C
    Ph Value 2.0-3.0 (1% solution)
    Odor Odorless
    Density 1.28 g/cm³
    Cas Number 693-23-2

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

    Packing & Storage
    Packing Dibasic Acid is securely packed in a blue 25 kg HDPE drum with a sealed, leak-proof lid and product labeling.
    Container Loading (20′ FCL) Container Loading (20′ FCL) for Dibasic Acid: Typically loads 15-18 metric tons in 25kg or 50kg bags, securely packed on pallets.
    Shipping Dibasic Acid should be shipped in tightly sealed containers made of compatible materials, protected from moisture and heat. Ensure proper labeling, including hazard warnings. Transport according to relevant local, national, and international regulations. Handle with care to prevent leaks or spills. Store upright and secure during transit to avoid damage or accidental release.
    Storage Dibasic acid should be stored in a cool, dry, well-ventilated area away from sources of ignition, heat, and incompatible materials such as strong bases and oxidizers. Keep the container tightly closed when not in use, and use corrosion-resistant packaging. Ensure appropriate labeling and secondary containment to prevent leaks or spills. Follow all relevant safety and regulatory guidelines for chemical storage.
    Shelf Life Dibasic Acid typically has a shelf life of 2 years when stored in a cool, dry place in tightly sealed containers.
    Application of Dibasic Acid

    Applications of Dibasic Acid in Industrial Manufacturing

    As a chemical raw material producer, we supply dibasic acid with traceable quality for targeted industrial sectors. Below we detail key application scenarios where downstream manufacturers demand precise grade control, dosage consistency, and documented compliance standards.

    1. Polyamide Resin Production

    Manufacturers use dibasic acid as a core building-block for high-performance polyamide resins. Blending it with diamines under controlled polymerization enables production of thermoplastics with identified melting points and mechanical strength. End producers track trace metals and purity, ensuring compatibility with engineering resin markets for automotive and electrical parts.

    Industry compliance standards

    • ISO 9001:2015 for quality management in resin manufacturing
    • RoHS Directive (2011/65/EU) for electronic and automotive applications
    • REACH Regulation (EC 1907/2006) for chemical safety and registration
    • UL 94 for flammability properties of plastic materials

    Typical usage ratio

    • 42–49% by weight relative to diamines in polyamide batch reactions, adjusted based on target polymer chain length and viscosity requirements

    Downstream process integration

    • Direct charging to polymerization reactors after pre-melt or mixing with diamine streams
    • Filtration and devolatilization post-reaction for pelletization or compounding
    • Granulation and drying prior to shipment or in-house molding lines

    Final product types

    • High-grade polyamide (nylon) engineering resin pellets
    • Molded automotive structural parts
    • Electrical and electronics connectors
    • Industrial machinery bushings and gears

    2. Polyester Polyol Synthesis for Polyurethane Elastomers

    Dibasic acid functions as a chain extender in polyester polyol manufacturing for polyurethane elastomers. Producers achieve defined hydroxyl and acid values critical for downstream reactivity. End-use sectors demand material confirmation per batch, especially for automotive bushings, rollers, and technical wheels.

    Industry compliance standards

    • ISO 14001 for environmental management during polyol formulation
    • EN 71-3 for restricted heavy metals in end-use polyurethane products
    • GHS labeling and documentation compliance
    • Automotive OEM specifications for processed polyurethanes

    Typical usage ratio

    • 28–35% by weight in polyester polyol backbone formulation, varied with polyol molecular weight and flexibility requirements

    Downstream process integration

    • Introduction into esterification reactor vessels with glycols under vacuum
    • Monitoring acid number before prepolymer processing with isocyanates
    • Sampling for QC acid value analysis at each batch

    Final product types

    • Polyurethane elastomer blocks and foams
    • Industrial conveyor rollers and wheels
    • Automotive control arm bushings
    • High-performance machinery pads

    3. Corrosion Inhibitor Formulation for Water Treatment

    Water treatment chemical formulators use dibasic acid as a chelating and pH adjustment agent in specific corrosion inhibitor blends. It stabilizes metal ions and assists in scale suppression. Downstream industry players conduct batch validation to certify release for potable water or process circuit additives.

    Industry compliance standards

    • ANSI/NSF Standard 60 for drinking water treatment chemical approval
    • EPA Clean Water Act monitoring for discharge limits
    • ASTM G31 for corrosion testing protocols

    Typical usage ratio

    • 0.2–2.0% by weight in corrosion inhibitor concentrate, adjusted according to total dissolved solids and system volume

    Downstream process integration

    • Premixed with other chelants and phosphonates in blending tanks
    • Metered injection into closed or open-loop water systems
    • pH and concentration monitoring at distribution points

    Final product types

    • Corrosion inhibitor fluids for industrial cooling towers
    • Inhibitor blends for boiler feed water
    • Potable water treatment additives
    • System maintenance flushing chemicals

    4. Lubricant Additive Manufacturing

    In lube additive production, dibasic acid acts as a base molecule in synthetic esters and detergents, supporting deposit control and oxidation resistance. Manufacturers require controlled acid value and low-ash grades for automotive, marine, and industrial lubricants where trace contamination affects downstream engine performance.

    Industry compliance standards

    • ACEA and API performance categories for finished lubricants
    • ILSAC GF-6 for automotive lubricant review
    • ISO 21469 for incidental food contact lubricant grades

    Typical usage ratio

    • 8–22% by weight in synthetic ester base stock formulations, fluctuates with viscosity index and OEM performance requirements

    Downstream process integration

    • Esterification synthesis kettles with polyol or branched alcohols
    • Vacuum stripping to remove residual acids
    • Blending with other additive components for package assembly

    Final product types

    • Synthetic motor oil base stocks
    • Compressor and refrigeration lubricants
    • Wire drawing and metalworking fluids
    • Hydraulic system lubricants

    5. Plasticizer Manufacturing for Flexible PVC

    Dibasic acid is reacted with aliphatic alcohols in the production of plasticizers. Producers supply high-purity grades to support migration and exudation resistance in flexible PVC applications, including wire insulation and flooring where material migration or degradation risk affects compliance to rigorous end-use controls.

    Industry compliance standards

    • EN 71-5 for toy safety in plasticized components
    • REACH Annex XVII restrictions for plasticizer substances
    • UL 62/758 for flexible cord and cable insulation

    Typical usage ratio

    • 25–38 phr (parts per hundred resin) in flexible PVC compounding, depending on finished product flexibility and migration limits

    Downstream process integration

    • Esterification reactor addition with chosen alcohols
    • Neutralization, filtration, and vacuum distillation for end-use purity
    • Direct blending into PVC compounding lines prior to extrusion or calendaring

    Final product types

    • Flexible PVC cable insulation and sheathing
    • Flooring and wall covering films
    • Automotive and appliance gaskets
    • Plasticized packaging foils

    6. Alkyd Resin Manufacturing for Coatings

    Coatings formulators incorporate dibasic acid in the synthesis of alkyd resins, giving control over film flexibility, weatherability, and adhesion properties. Accurate titration and batch monitoring reduce inconsistencies in solvent-borne and water-reducible coatings used for metal and wood substrates.

    Industry compliance standards

    • ISO 12944 for corrosion protection coatings
    • VOC content rules under EU Directive 2004/42/EC
    • ASTM D3022 for alkyd resin testing

    Typical usage ratio

    • 15–28% by weight in alkyd resin synthesis, selected by target film hardness and flexibility profiles

    Downstream process integration

    • Charged to reaction vessels with polyols and fatty acids/oils under heat and vacuum
    • Vacuum stripping of water and volatile acids post-condensation
    • Blending into formulation tanks for tinting and additive dosing

    Final product types

    • Solvent-based metal coatings and enamels
    • Water-reducible wood varnishes
    • Industrial primer and finish coatings
    • Architectural paint binders

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    Certification & Compliance
    More Introduction

    Dibasic Acid: Our Commitment to Precision and Quality

    Understanding Dibasic Acid From the Manufacturer’s View

    For years, we’ve specialized in the production of dibasic acid, bringing a blend of technical knowledge and reliability to every batch we deliver. Dibasic acid, often recognized for its role in nylon synthesis and other demanding chemical processes, rises above alternatives for its consistent carbon chain and minimal impurities. Our primary model focuses on the typical C6-C8 carbon range, which we’ve tailored through decades of practical experience responding to industrial customer requests and tackling the challenges of purity, reactivity, and cost efficiency.

    How Experience Shapes Our Product

    The production of organic acids is not simply about obtaining a specification sheet result. Small variances at the plant can cause a domino effect during customer processing, and with dibasic acid, these differences become obvious quickly. That’s why we have fine-tuned our plant controls and raw material supply lines, because inconsistent feedstocks or temperature deviation ripple through to crystallinity, particle size, and — most critically — acid value. Years of batch testing show that careless handling or rushed cooling invites off-color material and higher water content.

    We’ve learned that customers prioritize a narrow melting point and low moisture. Inconsistent hydrogenation often leads to discoloration and even the formation of unwanted byproducts with a distinct odor, which can disrupt downstream polycondensation or plasticizer synthesis. Monitoring and early intervention address these shifts directly, which is why our technical staff has shaped every stage — from upstream solvent management to the final milling — for greater confidence in the finished acid.

    Addressing the Demand for Versatility

    Most requests for dibasic acid come from two streams: nylon intermediate synthesis and the plasticizer market. Our team often finds that each sector insists on a specific concentration and purity. For nylon-6,6 and related polyamide production, trace mineral content matters almost as much as acid number consistency, as metals like iron or copper directly impact polymer chain formation. In contrast, formulators in the plasticizer space focus heavily on color and odor, pressing us to develop purification protocols that strip out natural precursors from plant feedstock.

    No two runs are identical. Yet, after years working directly with formulators and process engineers, we have shaped our dibasic acid grades by blending quality control with flexible logistics. We do not see the product as a “one-size-fits-all” commodity; every industry pushes different performance expectations. In packaging, enhanced acid purity prevents yellowing in films. For lubricants, keeping esters below a specific volatility range ensures end-use performance when subjected to temperature extremes.

    What Sets This Acid Apart from Other Choices

    Plenty of manufacturers offer alternatives in the dicarboxylic acid category. Each has a place: adipic acid, for instance, sets the standard for many large-volume applications, but its higher reactivity can introduce process headaches in specialty polyamides. Azelaic acid, with its additional carbon length, improves elasticity but bumps up cost and can reduce batch yields in certain plastic formulations.

    We focus on dibasic acid’s precise chain length, which balances reactivity and flexibility for polymer chains. In direct comparison to its single-chain relatives, our product delivers a controlled melting point, a predictable acid value, and uniform reactivity under various polymerization conditions. This control removes unwanted process swings seen with less refined acids — a factor many partners highlight during their audits. Residual moisture and trace metals remain well inside the thresholds for both food packaging and industrial polymer use, proven through ongoing product tracking after delivery.

    Insights From the Production Floor

    Arguments about production purity and the need for proven consistency dominate nearly every customer conversation. Every year, someone brings us a story about a failed batch traced back to a suspicious impurity lurking in a dicarboxylic shipment. These aren’t just theoretical risks — in one case, a textile fiber customer documented filament breakage and poor dye uptake in their spinning facilities. Laboratory analysis pinpointed unwanted byproducts that slipped past a rival’s test protocols. The incident reinforced our ongoing commitment to traceability, regular equipment calibration, and batch-level verification. Our team never hesitates to halt a production line to resolve even minor anomalies. This isn’t just about achieving a marketable number; it protects end-user processes that operate on tight tolerances and tight timelines.

    Production training remains as critical as automation. Operators on our lines track purity throughout each cycle, logging real-time data and sampling for visual and chemical indicators. Between the reactor and the crystallizer, every valve and filter draws closer attention. Over time, we’ve catalogued the ways dust, trace water, and even residual solvents can act as trouble sources. The cleaning routines and raw material vetting benefit every user, from global nylon producers to regional adhesives makers. We constantly share findings from our plant with our technical service partners, supporting continuous improvement at both ends of the supply chain.

    Backing Claims With Results, Not Talk

    We built our dibasic acid line with an understanding that spec sheets don’t capture the full story. Multiple independent audits and direct customer testing demonstrate that our low-branched content cuts down yield loss and minimizes resin discoloration. Lab certificates track peroxide values and residual solvent content, feeding directly into each shipment’s quality report — letting end users skip retesting and accelerate their own manufacturing schedules. In recent years, several customers in foam manufacturing confirmed fewer off-gassing incidents and more robust cell structures, referencing their switch to our consistent acid precision.

    To add another layer of trust, we keep cross-reference samples of every processed batch for later comparison. Last winter, a packaging client faced a shelf-life issue that required us to go back over old lab results, confirming that the delivered acid fell well within the guarantee window. The extra work brought clarity for both sides; root-cause analysis showed that formulation and handling at the customer site created outside contamination. This level of transparency, born from direct plant control rather than trader paperwork, forms a backbone for long-term business relationships.

    Environmental Responsibility and Supply Security

    Our production model pursues both efficiency and reduced emissions. Over the past ten years, we cut effluent volumes per ton by incorporating closed-loop cooling and more energy-effective evaporation. The upstream raw material selection avoids hazardous intermediates, and continuous investment in emission abatement ensures neighborhood safety, as well as regulatory compliance. By reducing both waste and volatile organic compound losses, we support customer efforts to meet sustainability goals, whether those connect to European REACH standards, U.S. EPA requirements, or less publicized corporate sustainability pledges.

    Supply chain disruptions surface more often these days, especially as sourcing for organic feedstocks gets squeezed. Working as the direct producer gives us situational control during global events such as shipping backlogs or geopolitical disruptions. Last quarter, an unexpected cargo delay at a coastal border led to rescheduling, but our back-up storage and in-house logistics team managed to keep key customers operating without interruption. Plant proximity to main rail and shipping lines, constant communication with truck partners, and tight container tracking reduce missed deliveries, which cannot always be said about imported or resold dicarboxylic acids. We take this obligation seriously: our product reliability depends on system-level planning, not chance.

    Helping Customers Grow and Adapt

    Many industries using dibasic acid face changing consumer expectations, new regulatory limits, and pressures to reduce cost. As upstream producers, we integrate feedback from these users directly into process improvement. For instance, coatings manufacturers increasingly request acid grades with extra-low color indexes, so our team adjusted both distillation and filtration protocols. Adhesives and sealant formulators require consistent particle size, so our milling and blending process grew more precise. Every challenge triggers real, on-site adjustment and—if required—a new idea from the R&D bench.

    Ongoing partnerships allow us to gain insight into the needs of both established multinationals and flexible startup ventures. We participate in technical troubleshooting sessions, sometimes sending our plant engineers on-site when users encounter unexpected behavior during polymerization or compounding. Sometimes this leads to a joint modification of solvent handling or a minor process change on our end. These kinds of collaborations only happen when the producer stands behind their product, from process to packaging.

    Looking Forward: Dibasic Acid’s Role in Industry Evolution

    Rising global demand for advanced engineering plastics, flame-retardant foam, and flexible packaging puts continued pressure on dicarboxylic acid supply chains. We see increased scrutiny of chemical origin, traceability, and environmental impact coming. By investing in digital batch tracking and laboratory automation, we supply partners not only with technical grade acid, but also with chemical documentation that supports compliance and transparency. For some sectors, end-use is traceable all the way from raw material receipt down to warehouse shelf. Practical experience tells us that such visibility prepares both our clients and ourselves for future regulatory or consumer-driven changes.

    We maintain direct input into the development of new acid derivatives and specialty blends. As hydrogenation, esterification, and condensation technologies evolve, we adapt our production line to intercept and incorporate new methods. Many of these innovations rise from customer desire for higher yields, greener processes, or specialty applications like medical polymers or eco-certified coatings. Investing in technical flexibility and pushing beyond commodity thinking allows our dibasic acid operation to stand out not for mere availability, but for repeatable, trusted performance across sectors.

    What Matters Most to Us as Producers

    Years in this business have taught us that the reputation of a chemical producer rests on more than price and minimum order size. Each batch of dibasic acid represents a promise reached through constant vigilance, process discipline, and hands-on technical problem solving. Success does not come from one person or department; it relies on plant operators, quality teams, safety managers, and customer-facing specialists working in concert. Our teams routinely swap insights between production and technical service, so learning flows directly from plant to customer and back.

    We keep a careful record of all feedback, whether it’s a simple packaging request, a question about lab methods, or suggestions for future grade development. This approach helps minimize repeat issues. A case from last spring stands out: a customer reported trace off-odors after a pallet spent several weeks in an unventilated truck during summer heat. By tracing back through our logs and collaborating with both transport companies and their technical crew, we revised packaging insulation for climates with frequent high temperatures. It’s this kind of direct, practical cooperation—grounded in real challenges—where our role as a chemical producer delivers the most.

    Bridging Quality With Real-World Application

    Dibasic acid’s main strengths come through not in isolated tests, but in the production lines and customer warehouses that depend on it daily. Every step, from supply management through packing and dispatch, finds its testament in the reliability we offer. As demand for specialized polymers, food-safe packaging, and resilient adhesives rises, we continue to seek improvement by integrating field feedback, regular staff training, and robust plant technology. The story of dibasic acid production is not a static one—it evolves, pressed forward by both market expectations and the dedication of those who take pride in every shipment. As direct manufacturers, we stand by every grade and every kilogram.