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Terephthalic Acid Monoamide

    • Product Name Terephthalic Acid Monoamide
    • Alias TAM
    • Einecs 629-629-0
    • 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
    VTB
    Specifications

    HS Code

    302989

    Cas Number 6393-33-7
    Molecular Formula C8H7NO2
    Molecular Weight 149.15 g/mol
    Iupac Name 4-carbamoylbenzoic acid
    Appearance White to off-white solid
    Melting Point 260-265°C
    Boiling Point Decomposes before boiling
    Solubility In Water Slightly soluble
    Pka 3.51 (carboxylic acid group)
    Density 1.48 g/cm³
    Synonyms 1,4-Benzenedicarboxylic acid monoamide
    Hazard Statements Irritant to eyes, skin, and respiratory system

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

    Packing & Storage
    Packing Terephthalic Acid Monoamide is packaged in a 500-gram amber glass bottle with a secure screw cap and detailed labeling.
    Shipping Terephthalic Acid Monoamide should be shipped in tightly sealed containers, protected from moisture and incompatible substances. Store in a cool, dry, and well-ventilated area. Handle carefully to avoid spills. Follow all relevant hazardous material transport regulations and ensure proper labeling and documentation during shipping to guarantee safety and compliance.
    Storage Terephthalic Acid Monoamide should be stored in a tightly closed container, in a cool, dry, and well-ventilated area away from incompatible substances such as strong oxidizers. Protect it from moisture, heat, and direct sunlight. Use appropriate chemical storage cabinets if available, and ensure containers are clearly labeled. Follow all relevant safety guidelines and local regulations for chemical storage.
    Application of Terephthalic Acid Monoamide

    Applications of Terephthalic Acid Monoamide in Industrial Manufacturing

    Terephthalic acid monoamide serves as a critical raw material in advanced polymer synthesis, coatings, high-performance fibers, and specialty intermediates production. Our manufacturing experience ensures reliable and consistent supply for demanding industrial sectors where performance and regulatory adherence cannot be compromised.

    1. Polyamide Engineering Plastics

    Polyamide engineering plastic producers leverage terephthalic acid monoamide to enhance polymer backbone rigidity and thermal stability in high-demand structural parts. Direct incorporation during polycondensation allows precise control over amide and acid monomer feed ratios, supporting tailored mechanical and heat resistance properties for injection molding and extrusion. Compliance with international migration limits and process reproducibility ensures these materials perform reliably in automotive, electrical, and machinery assemblies exposed to harsh operating environments.

    Industry compliance standards

    • ISO 9001:2015 Quality Management Systems
    • UL 94 Flammability Standards (for plastic end-use)
    • EU Regulation (EC) No 1907/2006 REACH Registration
    • RoHS Directive 2011/65/EU (for electronic applications)

    Typical usage ratio

    • 3–10 mol% of total acid monomers in the polyamide formulation, fine-tuned for thermal and physical performance requirements.

    Downstream process integration

    • Direct addition during high-vacuum polycondensation with caprolactam or hexamethylenediamine in batch or continuous reactor systems.

    Final product types

    • Heat-resistant polyamide (PA) compounds
    • Engineering resin pellets
    • Automotive connectors and structural components
    • Electrical and electronic housings

    2. High-Performance Coating Resins

    Industrial coating resin manufacturers use terephthalic acid monoamide as a chain modifier in polyester, polyurethane, and hybrid resin systems. Its inclusion regulates crosslink density, improving hardness and chemical resistance in coatings for metal panels, consumer appliances, and outdoor structures. Adjustment of the monoamide ratio during the prepolymerization stage optimizes flexibility and durability while ensuring that cured films comply with emission and safety regulations specific to the intended application.

    Industry compliance standards

    • EN 13501-1:2018 Fire Classification for Coated Surfaces
    • Directive 2004/42/CE VOC Content in Paints and Coatings
    • ISO 12944 Corrosion Protection of Steel Structures

    Typical usage ratio

    • 5–18 wt% relative to total resin solids input, depending on targeted hardness, solvent resistance, and film flexibility.

    Downstream process integration

    • Incorporation at the oligomer or resin prepolymer formation stage, prior to final crosslinker addition and film application.

    Final product types

    • Industrial metal primers
    • Powder coating resins
    • UV-cured appliance coatings
    • Protective infrastructure paints

    3. Fiber Spinning for Technical Textiles

    Producers of technical fibers integrate terephthalic acid monoamide during polyamide or polyester melt spinning operations to impart controlled crystallinity, dyeability, and hydrolysis resistance. It acts as a co-monomer for process optimization, enhancing stability under textile finishing and thermal treatments. Adjustments in feed ratios support continuous production parameters, fulfilling sector standards for performance fibers used in safety apparel, conveyor belts, and filtration fabrics.

    Industry compliance standards

    • Oeko-Tex Standard 100 (textile safety)
    • ISO 14001:2015 Environmental Management (fiber manufacturing)
    • ASTM D1577 Fiber Identification

    Typical usage ratio

    • 2–7 mol% as part of the total dicarboxylic acid content in the fiber-forming resin batch, adjusted for desired mechanical and dyeing properties.

    Downstream process integration

    • Blending into monomer mix for continuous melt spinning or direct chip feed, followed by drawing and post-treatment for property development.

    Final product types

    • Flame-retardant industrial yarns
    • Reinforcement fibers for rubber goods
    • Specialty filtration nonwovens
    • Protective workwear fabrics

    4. Reactive Polyurethane Systems for Adhesives & Sealants

    Manufacturers of reactive polyurethane adhesives and sealants employ terephthalic acid monoamide as a functional chain extender or crosslink regulator. This component improves hydrolytic stability and mechanical modulus, essential for high-durability bonding and gap-sealing applications under moisture, temperature, and chemical stresses. Compliance with global chemical safety and migration regulations ensures end products meet heavy-duty industry and construction requirements.

    Industry compliance standards

    • ISO 11600 Building Construction Sealants Classification
    • EN 923:2005 Adhesives—Terms and Definitions
    • Global GHS (CLP Regulation for chemical safety labeling)

    Typical usage ratio

    • 0.5–3 wt% in the polyol/chain extender phase, tailored to application process (hot melt vs. moisture-cure) and performance demands.

    Downstream process integration

    • Addition to prepolymer mix during polyaddition or as chain extender in one-component and two-component adhesive production lines.

    Final product types

    • Automotive structural sealants
    • High modulus industrial adhesives
    • Flexible expansion joint compounds
    • Polyurethane grout and anchoring systems

    5. Specialty Intermediate for Pharmaceutical Synthesis

    Chemical synthesis units utilize terephthalic acid monoamide as a specialty intermediate in the preparation of active pharmaceutical ingredient scaffolds and advanced intermediates. Its precise reactivity facilitates amide bond formation and controlled molecular architecture, supporting compliance with pharmacopeial identity, purity, and residual solvent requirements during multi-step API syntheses. Handling includes strict in-process controls and validated purification steps aligned with industry GMP standards.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice (GMP) for APIs
    • EU GMP Guidelines Part II
    • USP–NF Current Version (for residual solvents/impurities)

    Typical usage ratio

    • Variable, typically used on a stoichiometric or slight excess basis (1.01–1.15 equivalents) in target amide/coupling reaction steps.

    Downstream process integration

    • Charged into amide bond formation or ring-closure reactions in controlled reactors, followed by extraction and chromatographic purification.

    Final product types

    • Pharmaceutical active intermediates
    • Precursor blocks for complex API molecules
    • Specialty reagent compounds

    6. Additive in High-Temperature Thermosetting Composites

    Composite material producers apply terephthalic acid monoamide as a co-monomer in thermosetting resin systems such as bismaleimides, enhancing crosslink matrix toughness and dimensional stability at elevated service temperatures. Adjusting the monoamide content directly affects resin viscosity and cure kinetics, which allows optimization for prepreg lay-up, pultrusion, or compression molding lines. Full regulatory documentation and technical data packages support customer process validation and finished composite qualification.

    Industry compliance standards

    • EN 2591 Aerospace Series—Resin and Composite Test Standards
    • ASTM D2344/D2344M Short Beam Strength
    • ISO 9001:2015 certified facilities for batch consistency

    Typical usage ratio

    • 1–6 wt% within the thermosetting resin monomer matrix, fine-tuned for high-temperature mechanical retention and processability.

    Downstream process integration

    • Intensive blending with primary matrix monomers, followed by in situ polymerization during composite fabrication workflow.

    Final product types

    • Aerospace-grade laminates
    • High-strength electrical insulation boards
    • Automotive thermal shields
    • Composite tool plates
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    Certification & Compliance
    More Introduction

    Terephthalic Acid Monoamide: A Manufacturer’s Perspective

    Understanding Terephthalic Acid Monoamide and Its Production Insights

    Working with Terephthalic Acid Monoamide every day sharpens an understanding of not only its chemical properties, but also its broader significance in the materials industry. As a manufacturer, we see it up close—right from raw material handling, transformation during synthesis, to the end blend that heads out to downstream industries. Our particular model of Terephthalic Acid Monoamide brings a crystalline white to off-white appearance, staying consistent in purity through strict process management.

    Our plant leans heavily on batch control. Each step—the measurement of terephthalic acid and ammonia, followed by precision in intermediate reactions—shapes the final quality more than anyone guessing from a label could know. We’ve learned to keep water content low because higher moisture can destabilize product storage, cause caking, and undermine later applications. Particle size matters for users in polymer additives, as well as in coatings and engineering plastics—some want a finely milled powder, others prefer a granular texture based on their process requirements. Our recent upgrades in filtration have driven visible improvements to physical appearance as well as downstream yield for our customers.

    Characteristics That Set It Apart

    Terephthalic Acid Monoamide often gets compared to its sibling, Terephthalamide, or to Terephthalic Dimethyl Ester (DMT). People unfamiliar with formulation might conflate them or expect similar reactivity. Experience has hammered home that the amide functional group on monoamide brings a set of behavioral traits unseen in its ester or di-amide counterparts. For example, in specialty resins, Terephthalic Acid Monoamide provides intermediate rigidity but greater process flexibility than the di-amide. Our polymer customers confirm that monoamide brings distinct melt-flow profiles and a melting point holding steady between 230°C to 240°C, without the broad melting range seen in other terephthalic family members.

    Incursion of impurities matters. As a manufacturer, our analytics team runs loads of HPLC and FT-IR tracking to pinpoint residues below 0.2%. Any bypass of quality on monoamide directly affects thermal stability and appearance of finished polymer, so we enforce narrow tolerances; we shape every kiloton with statistical sampling for each drum and each lot.

    Applications Driven by Real Industrial Feedback

    Polymer modification absorbs much of our annual monoamide output. In practice, our partners use it to fine-tune crystallinity in polyesters, enhance thermal resistance, and lower shrinkage for specialty fibers. Several years ago, a major wire insulation group began replacing a fraction of traditional di-amide crosslinkers with monoamide. Their feedback: monoamide helped reduce their yellowing index and improved process latitude on extrusion lines.

    Our hands-on work with adhesives makers underscores other traits. One customer, making hot-melt adhesives for electronics encapsulation, struggled with low-temperature creep. They reported that blends with Terephthalic Acid Monoamide managed to raise softening points and preserved tack under thermal cycling.

    Coatings manufacturers tap monoamide for its balance between chemical resistance and surface hardness. We observed that formulating with monoamide rather than phthalic anhydride dramatically reduced water uptake in two-component paints. Some professional lacquer formulators say it serves as a key link in bridging aromatic durability and amide elasticity, unlocking combinations that older ingredients never delivered.

    Eco-aware companies increasingly push for amide-based intermediates over halogenated or high-carbon content materials. Monoamide steps in as a more inert, environment-friendly building block. Waste from our process heads for responsible incineration with minimal NOx output, and we operate a closed-loop solvent stream to minimize environmental burden.

    Specifications Shaped by Use, Not Just Standards

    Chemists can list numbers: melting point, ash content, bulk density. Yet real utility comes from how a material behaves in the user’s line. While classic specs call for a purity not less than 99%, we often get special requests for ultra-low metal content versions—our upgrades in purification, improved washing, and control of reactant streams allow us to guarantee below 5 ppm of iron and less than 1 ppm of free ammonia for those who need it. Textile finishers, for instance, notice that trace metals promote discoloration and compromise long-life fabric treatments, so we put energy into removing them.

    Bulk density varies slightly among lots. Coatings and masterbatch makers ask for a slightly coarser cut so the product flows smoothly in automatic feeders, while resin houses interested in batch blending go for a finer size to blend more intimately into their melts. Between user feedback and equipment downtime analysis, our team refined our grinding and sieving steps to keep products within 5% variance on particle size distribution.

    We supply in moisture-protected bags and lined drums to make sure the integrity holds from plant to end user. Storage on our end involves constant temperature and humidity monitoring. Past experience told us a few hours exposed to moist air will cause clumps that no downstream customer wants to handle. For industrial users, our extra effort here translates to consistent handling and fewer process shutdowns.

    Comparing Terephthalic Acid Monoamide to Related Compounds

    End users sometimes ask why monoamide works better for their purpose than Terephthalic Acid or Terephthalic Diamide. Decades in production and their cumulative client feedback point to a few tangible distinctions. Monoamide offers intermediate polarity: it dissolves better in polar organic solvents than the di-acid, yet it won’t hydrolyze as fast as esters or amides with more substituents. This matters for formulators seeking tight reaction control or those working in water-sensitive systems.

    Polymer processors who switched from Terephthalic Acid to monoamide told us it let them keep higher mechanical strengths in finished products under wet and dry conditions. The reason ties back to molecular rigidity—monoamide structures limit segmental mobility but don’t overly crosslink as di-amides do. In functional coatings, monoamide enables clear films with fewer microbubbles and reduces fish-eyeing when compared with phthalic-based systems. These are not theoretical benefits; they show up in lower rejection rates and better product acceptance in the market.

    In powder coatings, users favored monoamide after noticing it provided extended pot life. Our plant’s close engagement with customers during their trials led us to fine-tune packaging sizes, tweak moisture protection, and offer technical support to bridge plant demands to actual application results.

    Marketplace Demands and Evolving Regulatory Pressure

    Market practice for chemical intermediates has changed quickly. Supply chain transparency, chemical traceability, and compliance with REACH and TSCA regulations now shape how we produce, document, and move every shipment. Experience with regular audits and customer visits makes it clear: customers want full visibility on raw material sourcing, energy use, and batch-specific carbon footprint. In response, our QC team maintains full raw data logs, and we welcome customer auditors to walk the floor and review records. When standards update, our plant adapts: more dust controls, next-generation scrubbers, and renewable process heating now form core parts of our daily work, not just compliance checkboxes.

    Recently, stricter global limits on residual aromatic amines and nitrosamines in polymers and adhesives added new quality hurdles. Monoamide delivers a benchmark for clean amide supply due to rigorous side-reaction controls built into our reactors. Technologists in resin blending see this reflected in their product certifications, meeting stringent migration limits for food-contact or medical plastics without needing extra purification steps.

    Competitive sourcing can tempt some buying managers to turn to traders or off-brand resellers offering low prices or warehouse-mixed lots. Decades running a multi-step amide synthesis plant remind us of the risks this brings: higher contaminant loads, uncertain previous handling, and missed documentation. Over time, many end-users return to stable, known-source supply—interrupted only after quality or supply chain problems force a rethink.

    Supporting Innovation Through Manufacturer-User Collaboration

    Fresh opportunities for Terephthalic Acid Monoamide open up as R&D shifts toward more complex composite resins, electronics encapsulants, and high-performance adhesives. We regularly participate alongside users in pilot plant runs and scale-up trials. A recent partnership with an automotive supplier allowed closer alignment of particle size and melt-flow to their rapidly spinning fiber line, after months of sample-exchange and process fine-tuning.

    Direct manufacturer-user dialogue also uncovers new uses our team did not initially foresee. After fielding requests from a battery separator company, we adapted our formulation process to cut extractable ions, answering a pressing durability concern in that sector. Rather than simply pushing out generic specs, we find that success comes from tuning process parameters—reactor temperature, agitation, timing, washing—to specific user needs, informed by their feedback not just our lab data.

    Working with technical departments, not just procurement, bridges the knowledge gap between chemical design and end-application performance. We share technical dossiers and even provide retained production samples for client verification, ensuring full traceability with every lot. This approach breeds long-term reliability—users know exactly what is in each batch, rather than guessing based on paperwork.

    Environmental and Worker Safety Considerations in Manufacturing

    Synthesis of Terephthalic Acid Monoamide depends on careful waste and emission handling. Through years of plant operation, it’s starkly clear that even small leaks in ammonia or acid feedlines demand vigilant control. We built redundant sensors and real-time monitors to protect workers and prevent runaway reactions. Material safety in handling extends to operators, who undergo yearly hazardous material training, and to external handlers, who receive full compatibility and emergency guidelines.

    Earlier, some in the industry lagged on process containment. Our plant design now draws heavily on lessons from the past: double-sealed reactors, automated nitrogen purging, and continuous air handling mean product leaves our facility as contaminant-free as possible, with all major vent streams scrubbed. Recently replacing solvent-wash with water-based cleaning for processing lines reduced both emissions and the time operators spend in confined hazardous spaces.

    We recycle every fraction of usable solvent, and our solid waste output now heads for external certified treatment instead of landfill. We keep a close working relationship with waste disposal specialists to maintain compliance and sustainable operations. Our by-product streams are tightly tracked using automated flow controllers tied in directly to plant management software; this offers real-time compliance reporting for both domestic and global regulatory bodies.

    Outlook for Terephthalic Acid Monoamide: Meeting Real-World Manufacturing Needs

    Over time, monoamide techniques evolve to match end-user requirements. Miniaturized electronics, specialized medical devices, and precision coatings continue to demand ever-lower impurity levels and ever-tighter control over physical parameters. Lean continuous improvement stands as our main approach: in every shift we spot, test, and implement ways to minimize contamination and maximize consistency. Users measure our quality by the hours saved on their process line and the rate their batches meet specification, more than by just lab reports.

    Users share openly that process interruptions—often caused by batch variability, moisture ingress, or out-of-spec contaminants—cost them far more than savings from a marginally cheaper source. That practical knowledge reinforces the importance of direct dialogue. Our technical support team knows most customer production floors inside and out, drawing not just on manufacturer knowledge but also customer experience to resolve hiccups fast.

    A few years back, as global logistics tightened and freight costs surged, we cooperated closely with supply-chain teams to adjust drum size, palletization, and shipping routes for lower damage and loss rates. Our long-term regulars appreciated a clear commitment to undisturbed supply—knowing their monoamide will match their line chemistry every time.

    Above all, successful manufacturing of Terephthalic Acid Monoamide draws on day-in, day-out attention to detail. Batch by batch, improvements grow out of field experience, customer conversation, and rigorous plant controls. As end-users continue to innovate with polymers, adhesives, and coatings, our collective focus remains fixed squarely on delivering a reliable, traceable, and application-ready product, built for real-world demands and not just for specs on paper.