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Carbic Anhydride

    • Product Name Carbic Anhydride
    • Alias Maleic Anhydride
    • Einecs 209-786-1
    • 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
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    Specifications

    HS Code

    265712

    Chemical Name Carbic Anhydride
    Cas Number 544-89-4
    Molecular Formula C6H4O3
    Molecular Weight 124.09 g/mol
    Appearance White crystalline solid
    Melting Point 102-105°C
    Boiling Point 307°C
    Solubility In Water Slightly soluble
    Density 1.321 g/cm3
    Odor Odorless
    Refractive Index 1.527
    Storage Conditions Store in a cool, dry place

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

    Packing & Storage
    Packing Carbic Anhydride is packaged in a 500g amber glass bottle with a tamper-evident cap and clear hazard labeling.
    Shipping Carbic Anhydride should be shipped in tightly sealed containers, protected from moisture and incompatible substances. Transport under cool, dry conditions, and follow all hazardous materials regulations. Clearly label the package, ensuring compliance with relevant local, national, and international shipping guidelines for chemicals. Use appropriate hazard symbols during transit.
    Storage Carbic Anhydride should be stored in a cool, dry, well-ventilated area away from moisture, strong acids, bases, and oxidizers. Containers must be tightly closed and clearly labeled, using materials compatible with corrosive substances. Storage facilities should have appropriate spill containment measures, and personnel should wear suitable protective equipment when handling this chemical. Keep away from sources of ignition and incompatible materials.
    Application of Carbic Anhydride

    Applications of Carbic Anhydride in Industrial Manufacturing

    As a direct manufacturer with established production technology and quality assurance, we supply Carbic Anhydride for recognized applications across primary value chains. Our expertise supports specific industrial segments with consistent product quality, traceable sourcing, and compliance with international standards.

    1. High-Performance Polyester Resins

    Producers in the coatings and composites sector use Carbic Anhydride as a curing agent and intermediate in saturated and unsaturated polyester resins. Its unique bicyclic structure introduces rigidity, enhancing film hardness and outdoor durability for powder coatings, coil coatings, and high-gloss applications. Formulators integrate it to achieve specific crosslink density, balancing mechanical strength with weatherability for automotive, appliance, and architectural finishes. Detailed adjustment of Carbic Anhydride content in the resin backbone allows precise control over curing kinetics and final coating attributes.

    Industry compliance standards

    • REACH Regulation (EC) No 1907/2006 for chemical safety in the EU
    • ISO 9001:2015 for quality management during resin manufacture
    • VOC emission limits per EU Directive 2004/42/EC (for paints and varnishes)
    • RoHS Directive 2011/65/EU for electronics coatings

    Typical usage ratio

    • 5%–15% by weight in polyester resin formulas, based on desired hardness and flexibility. Adjusted within this range to meet targeted curing profiles and performance specifications.

    Downstream process integration

    • React Carbic Anhydride with glycols during resin polycondensation. Introduce it at the oligomer stage to maximize chain incorporation, followed by catalyst addition and vacuum stripping.

    Final product types

    • Exterior powder coatings for automobiles and home appliances
    • Architectural coil coatings
    • Crosslinked composite matrices for construction panels
    • High-durability industrial finish resins

    2. Curing Agents for Epoxy Systems

    In the adhesives, electrical encapsulation, and flooring compound industries, Carbic Anhydride serves as a chemical curing agent for epoxies requiring high thermal stability and mechanical robustness. Its bicyclic ring system limits chain mobility, allowing manufacturers to formulate systems with controlled reactivity, minimal shrinkage, and high dielectric strength for electronic assemblies, potting resins, and industrial adhesives. Direct application parameters stem from UL and ASTM testing for end-use reliability.

    Industry compliance standards

    • UL 94 for flammability of plastic materials
    • IEC 61215 for PV module materials
    • ASTM D1651 for cure rate as epoxy hardener
    • ISO 14001 for environmental management during synthesis

    Typical usage ratio

    • 10%–35% by weight of total epoxy system. Ratio varies with epoxide equivalent weight and required glass transition temperature of the cured resin.

    Downstream process integration

    • Add during epoxy pre-mix. Preheat resin to promote dissolution and reaction, followed by cooling and mold casting or adhesive application. Curing under controlled humidity and temperature to optimize network formation.

    Final product types

    • Electronic circuit board encapsulants
    • Industrial floor coatings
    • High-performance structural adhesives
    • Transformer and electrical potting compounds

    3. Synthesis of Agricultural Chemicals

    Agrochemical companies utilize Carbic Anhydride in selective synthesis of intermediates for herbicide and plant growth regulator production. Its functional groups offer synthetic versatility for introducing sterically hindered and environmentally stable moieties. Downstream processes rely on precise reaction control, guided by agricultural chemical regulations and batch traceability. Process chemists leverage the anhydride’s bicyclic framework to generate analogs with desired biological activity and improved field persistence.

    Industry compliance standards

    • FAO & WHO specifications for pesticide formulations
    • ISO 17025 accreditation for laboratory quality
    • China GB 2763 MRLs (Maximum Residue Limits)
    • REACH registration dossier for key intermediates

    Typical usage ratio

    • 0.5–2.5 molar equivalents per crop protection active ingredient synthesis step, depending on target molecule structure and process yield optimization.

    Downstream process integration

    • React with amine or alcohol functionalized substrates during key step in active ingredient assembly. Inserted as a core fragment into agrochemical backbone, often under basic or acid-catalyzed batch protocols.

    Final product types

    • Herbicide technical concentrates
    • Plant growth regulator intermediates
    • Formulated agricultural pesticide products
    • Biocidal coating additives for seed treatment

    4. Synthesis of Specialty Polycarbonates

    Specialty polymer manufacturers apply Carbic Anhydride in custom polycarbonate synthesis, particularly for high-clarity and impact-resistant engineering plastics. It acts as a rigid monomer component, influencing molecular alignment, thermal deformation resistance, and optical clarity. The integration protocol demands controlled dosing to avoid chain scission and optimize reaction kinetics during melt polycondensation or solution polymerization processes.

    Industry compliance standards

    • ISO 7391 for polycarbonate resin composition
    • FDA 21 CFR 177.1580 (plastics for food contact, where applicable)
    • UL 746C for polymer flammability
    • GB/T 2408 for Chinese plastics flammability testing

    Typical usage ratio

    • 2%–8% by monomer mass in polycarbonate copolymerization, subject to final product transparency and impact resistance criteria.

    Downstream process integration

    • Feed into reactor with diaryl carbonate and bisphenols. Initiate transesterification or interfacial polymerization, closely monitoring viscosity and molecular weight to ensure product uniformity.

    Final product types

    • Optical-grade polycarbonate sheets
    • Precision-molded electronic housings
    • Transparent safety barriers and visors
    • Protective lighting covers

    5. Adhesive and Sealant Ingredient

    Manufacturers of specialty sealants and high-demand industrial adhesives rely on Carbic Anhydride for synthesizing cyclic anhydride-based curing systems. Its chemistry supports the manufacture of sealants for demanding environments, such as in construction and aerospace, requiring strong bonding, temperature resilience, and solvent resistance. The formulation step integrates the raw material in prepolymer modification or as a direct hardener, allowing tight specification control per market and regulatory demands.

    Industry compliance standards

    • ASTM C920 for elastomeric joint sealants
    • EN 15651 for construction sealants
    • ISO 4587 for adhesive lap shear testing
    • BS 5212 for structural bridge adhesives

    Typical usage ratio

    • 5%–22% by combined weight of the base resin, adjusted per end-use tensile strength and cure speed targets.

    Downstream process integration

    • Mix Carbic Anhydride into the base resin during the compounding stage. Cure with suitable co-reactants, monitored for gel time and final cure by quality control protocols.

    Final product types

    • Structural adhesives for construction panels
    • Elastomeric joint sealants for façades
    • Aerospace-grade bonding agents
    • High-strength industrial glues

    6. Photopolymer and Specialty Ink Synthesis

    Printing ink and photopolymer manufacturers employ Carbic Anhydride to engineer novel photoreactive resins, targeting improved cure rates and abrasion resistance for industrial digital, screen, and offset inks. The anhydride group enables introduction of crosslinkable functionalities, enhancing UV stability and chemical resistance, which is critical for label, packaging, and electronics printing applications. This adaptation supports low-migration inks meeting food and pharmaceutical pack compliance.

    Industry compliance standards

    • EuPIA Guidelines on Printing Inks
    • Swiss Ordinance on Materials and Articles (SR 817.023.21)
    • ISO 2846-1 for ink color and composition testing
    • REACH SVHC screening

    Typical usage ratio

    • 3%–12% by total photopolymer mixture, based on ink film thickness and final required crosslinking density.

    Downstream process integration

    • Incorporate during oligomer synthesis or as a post-polymerization modifier. Control photoinitiator addition and UV exposure per commercial ink press technology.

    Final product types

    • Industrial UV-curable inks for packaging
    • Photopolymer plates for flexographic printing
    • Digital and offset press ink formulations
    • Specialty screen printing media
    Free Quote

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    Certification & Compliance
    More Introduction

    Carbic Anhydride: Our Workhorse Chemical for Modern Synthesis

    Manufacturing Perspective on Carbic Anhydride Production

    Every day in our production facility, we measure progress less by the tons shipped than by how Carbic Anhydride enables chemists to bridge ideas with results. This compound rarely attracts headlines in the broader world, but the people working in polymer synthesis, resins, agrochemicals, or specialty coatings recognize Carbic Anhydride as a foundation. Years of hands-on batch production have taught us what it takes to bring out its characteristic reactivity and consistent quality, which drive its real-world utility.

    Model and Specifications: Delivering Consistent Performance

    For our main model variant, we manufacture Carbic Anhydride with a purity level above 99.5% as measured in routine QA checkups using our in-house GC and FTIR analysis. Color appears clear to slightly off-white, hinting at the compound’s clean preparation and diligent storage. Particle size holds steady at 200 mesh, allowing efficient dissolution and mixing in both solvent and melt environments. These figures do not come about by chance; every shift in our operation runs automated controls to maintain drying and temperature staging, and our process engineers walk the production floor with calibrated thermocouples before the product ever sees a packaging drum.

    In the years since we established our newer reactor line, reaction yields crept up by a few tenths of a percent thanks to trifling adjustments in catalyst ratios and controlling air ingress. Most clients never see this side of things, but for us, clean, high-yield output and a narrow impurity profile matter a great deal. Industrial users have strict demands—each kilogram represents dozens of hours of reactor time, solvent recovery, post-filtration, and finishing.

    Real-World Usage: From Lab Bench to Processing Lines

    Firms invest in Carbic Anhydride because they need an acylation agent that performs reliably in repeated batch operations. In our own technical labs, we use it to modify aromatic and aliphatic compounds, and since it reacts rapidly with hydroxyl or amine groups, small deviations in water content can immediately affect yield and color. Most end-users apply it for producing intermediates in pharmaceuticals, sophisticated polymer resins, and sometimes curing agents where water tolerance is especially low. Clients routinely validate our shipment with small-scale trial runs before scaling up, aware that one batch of contaminated material could disrupt production down the line.

    Field engineers often share feedback—the need for rapid reaction kinetics, low byproduct generation, and easy downstream purification. That’s why we put as much focus on storage and transport conditions as on the original synthetic step. In our plant, nobody shrugs off an above-range moisture result in a final product drum. Left unchecked, trace water easily leads to hydrolysis and reduced shelf life. Our best operators know this risk intimately. Many a late-night maintenance call has reminded us what looks manageable on a spec sheet can cause headaches in a real processing hall.

    What Sets Carbic Anhydride Apart from Similar Agents?

    People often compare Carbic Anhydride to other anhydrides, like phthalic or maleic. We see the differences in the temperature control during production and the way secondary reactions evolve in the plant. Carbic Anhydride tends to hold up better under a moderate heat load, and it introduces fewer side reactions in aromatic substitutions. Our formulation does not cling to glassware or build up residue inside standard reactors as aggressively as its relatives. End-users notice this during vessel cleanup and solvent recovery, saving time between runs and prolonging gaskets and hardware.

    We have fielded a steady flow of questions about reactivity profiles, especially from labs switching over from more basic or cheaper anhydrides. While certain lower-cost alternatives handle rudimentary applications, Carbic Anhydride gives a cleaner conversion in pharmaceutical and resin syntheses that demand tight quality control. Fewer unwanted side-products cut down on column purification steps and waste solvent disposal. For the technician at the bench, this means smoother NMR and HPLC results. For the cost controller, it means better yields and less environmental overhead.

    Consistency in an Unstable World

    Covid-era supply disruptions brought home the importance of dependable partners. We shut down and restarted lines more than once, always with the focus on minimizing interruptions. Sourcing feedstocks in uncertain times, just getting main intermediates off the tank trucks and keeping maintenance on top of aging infrastructure, became a group effort. Management, engineering, and production worked together, adapting protocols and rolling out prioritization systems for core customers, especially those tied to health or national infrastructure.

    We put extra effort into training and cross-training production staff, so operations would not stall if a crew member was out sick. Our veteran workers know the synthesis by heart, but bringing on a new chemist or operator means going deeper—showing them the little things: how glassware fog spoils a batch, why the furnace needs resetting daily, and what that odd odor during distillation portends. Over time, these minute practices build the backbone of our consistency.

    Why Purity and Batch Control Count

    Purity is not an academic number to us. It is tracked on every filled drum and in digital batch records, confirmed before outbound logistics signs off. Chromatograms with a spike at a new retention time mean real dollars spent on rework or disposal. Last year, a brief feedstock impurity caused visible yellowing and cost us a week of reprocessing—costs we shouldered to uphold our customer guarantee. Tight in-house analytics and batch tracking form part of our daily routine, not just quarterly targets.

    Some plant managers want a relaxed spec and chase a few percent cost savings. Our biggest customers, especially in pharma and electronics, do not take those chances. A single shipment with the wrong impurity profile can sideline an entire campaign or draw scrutiny in an audit. From our perspective, nonconformance is not a theoretical risk; it shows up fast when QC calls for a hold and a half-million-dollar order sits idle. We invest in documentation, chain-of-custody tracking, and transparent sample record-keeping because reputation runs only as far as the most recent shipment.

    Practical Solutions for Handling and Safety

    Experience has taught us the best handling practice is prevention: keep barrels tightly sealed, avoid unnecessary transfers, and maintain a dry warehouse environment. Our site team inspects storage areas daily for leaks and condensation, especially in the humid months. Years ago, a supplier’s oversight taught us the lesson—a leaky gasket led to water uptake and product decomposition. Now we enforce double-checks on all inbound and outbound seals, and we staff hotline numbers for rapid support in case of unexpected incidents.

    Operator safety marks every procedure. Even with a compound as forgiving as this one, we insist on full PPE and direct-vent fume extraction in drum transfer zones. Our warehouse crew walks through drills on spill management with every new hiring wave. In over a decade of shipping, we’ve avoided major incidents in part by never skipping the basics—inspect, contain, measure, record.

    Continuous Improvement Driven by Customer Needs

    Feedback steers our investment decisions. When a paint resin client sought higher thermal stability, we trialed a small-batch process modification and ran side-by-side tests on decomposition profiles. The result was a micro-adjustment to catalyst charge that improved storage times by several weeks. For specialty polymer applications, our tech team worked directly with R&D at partner sites, identifying optimal feed ratios and adaptation for new solvent systems. These collaborations take extra effort, but over time they’ve guided incremental upgrades to our reactor controls and QA procedures.

    We don’t launch product adjustments by committee or PR. Operators meet with lab techs weekly, passing along news of process hiccups, customer queries, and unexpected outcomes. This loop—problem, idea, test, verify—drives our incremental progress more than any external consulting firm or industry white paper.

    The People Behind the Process

    A chemical like Carbic Anhydride matters because of the people managing its journey from raw feedstock to finished product. Every shift change brings new focus, as plant teams review logs and double-check sensors. Our line foremen have logged more than a decade on site and know the subtle hints: a change in color, a slight variance in pressure, the vibration of a transfer pump that might need pre-emptive maintenance.

    No technology replaces the years of attention invested by operators, lab staff, packagers, and logistics leads who’ve seen the process through regional storms and power failures. During an unexpected freeze event, teams stayed late to keep utility lines open and drum heaters powered, ensuring material integrity for critical orders. There’s pride in a clean production run—not because it’s routine, but because every batch stands as an extension of their work.

    Customer Challenges We Help Solve

    Clients approach us with problems ranging from slow mixing in large-scale kettles to unexpected side reactions in pilot batches. We routinely engage onsite support for start-up operations, walking through pivotal issues like reagent order-of-addition, dosing rates, and troubleshooting off-spec analytical data. In a world of tight production windows, delays mean cascading downstream effects. Our team knows the pressure of a midnight phone call about a filtration issue, and we keep troubleshooting resources at the ready, both in person and through digital video walk-throughs.

    Some customers want insight into improving product shelf-stability or reducing cycle times. We share our experience—optimizing solvent removal, tweaking vacuum application, or controlling exotherms during large-volume reactions. In many cases, simple changes pay dividends: switching out a transfer hose for one with a smoother bore, or installing better desiccant air dryers. No detail gets overlooked, since small process inefficiencies quickly scale up to real cost at industrial production rates.

    Environmental Responsibility and Waste Reduction

    Sustainability drives daily decisions. Our plant’s solvent recovery targets get set by month, not quarter. Office meetings often shift focus to on-the-ground topics: how to minimize packaging waste, how to further close solvent loops, and how to ensure every process remains inside permitted release levels. Teams in compliance and process improvement share a common aim—keep the footprint as minimal as practical, meeting both customer and regulatory expectations.

    We were early adopters for in-process monitoring and have reduced total waste by several percent since making continuous sensors a permanent part of the QA routine. Capturing non-conforming intermediates allows us to perform off-line rework, cutting overall disposal needs. Lessons from multiple years of tracking confirm the value of incremental change—no single overhaul solves the broader puzzle, but steady refinement saves both cost and environment long-term.

    Traceability and Documentation: A Silent Backbone

    Every drum of Carbic Anhydride carries more than a batch number. Production logs detail raw material sources, operator names, time stamps for all major steps, and independent QA signoff at every control point. This recordkeeping means our partners in regulated industries—pharma, food-contact manufacturing, electronics—can trace every kilogram back to its first day in our plant.

    A few years ago, a multinational audit team spent a week reviewing our documentation and physical stock. Their findings: a robust system, built not on bureaucracy, but out of respect for our customer’s accountability needs. We credit this diligence to our staff, who maintain log books as a point of pride, not mere formality. It keeps the team focused on quality and helps new staff learn what matters in every handoff.

    Supply Chain Partners and Long-Term Commitments

    Our suppliers affect every drum we produce. Over the past decade, we cultivated relationships with feedstock producers who share our standards on both quality and reliability. We select transportation partners for their safety records and on-time performance, not simple price points. This has kept us out of pinch points during market turbulence that sent others scrambling for base chemicals.

    Customers expect steady supply, and to us, commitment means preparing for the unexpected—stocking in anticipation of seasonal surges, investing in spare parts, and qualifying secondary raw material sources. Customers often cite these measures as decisive factors in contract renewal, telling us that reliability in chemical supply equals production security for their business.

    Adapting to Change: Growth and Learning Over Time

    No process, no matter how mature, stands still. Our site undergoes instrument upgrades, process reviews, and periodic deep maintenance to align with best practices and customer expectations. Lab teams monitor new synthetic techniques, run pilot trials, and feed learnings to scale-up crews. In-house and external training keep staff current with both evolving regulatory requirements and technological improvements.

    Technical know-how forms only part of progress. Handling change requires teamwork and ongoing communication, both within our plant and with partners outside. Major projects, like a distillation system overhaul, require months of planning and risk assessment, made possible only through trust up and down the organization.

    Trust Earned Through Transparency

    Our users rely on honest, detailed exchanges. When a challenge arises, from a cloudy drum on the dock to mismatched analytical numbers, we investigate side by side with the customer, sharing records and doing joint root-cause analysis. Over time, this has fostered a partnership dynamic, not just a buyer-seller relationship.

    Long-term customers appreciate knowing the real circumstances behind each shipment—if weather delayed transit, or a maintenance event forced a scheduling bump, those facts get communicated directly. We treat partners as peers in a shared industry, with the practical understanding that transparency wins out over quick explanations.

    Innovation Rooted in Practical Need

    We do not chase every new chemical fad or fashion. The R&D group focuses instead on meaningful technical improvements: reducing solvent use, improving reaction times, and eliminating sources of trace contamination. Teams share test runs and emerging literature, but always return to real customer needs—does this innovation lower cost, improve product quality, or make handling simpler?

    This considered approach paid off in the past year when a targeted investment in reactor temperature control led to more precise impurity management and a recognizable upgrade in client QC reports. Feedback from line operators confirmed the changes saved prep time, avoided a persistent side-product, and left product handling simpler for packout teams.

    Summary: Experience Matters in Chemical Manufacturing

    For us, Carbic Anhydride means years of incremental improvements, troubleshooting, and relationship-building. Each kilogram reflects the compounded experience of staff who know what to watch for and when to intervene. In competitive sectors, quality and reliability are not just promises—they are concrete results that underpin every customer project, every regulatory review, and every technical advance. Our perspective is built from the ground up: make high-quality products, support your partners, and keep learning every day.