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Dimethyl Aminoterephthalate

    • Product Name Dimethyl Aminoterephthalate
    • Alias DMAP
    • Einecs 245-741-2
    • 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

    298746

    Cas Number 3165-93-3
    Molecular Formula C10H11NO4
    Molecular Weight 209.20 g/mol
    Appearance White to off-white solid
    Melting Point 165-167 °C
    Solubility Soluble in organic solvents like methanol and ethanol
    Purity Typically ≥98%
    Smiles COC(=O)C1=CC(=CC=C1N)C(=O)OC
    Storage Temperature Store at room temperature

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

    Packing & Storage
    Packing A 100g amber glass bottle, securely sealed, labeled "Dimethyl Aminoterephthalate," with hazard warnings and lot number, packed in cushioning material.
    Shipping Dimethyl Aminoterephthalate should be shipped in tightly sealed containers, protected from moisture and light. It is typically transported as a solid under ambient conditions. Follow all applicable regulations for chemical shipping, including proper labeling and documentation. Ensure compliance with safety guidelines for handling potentially hazardous organic compounds during transit.
    Storage Dimethyl Aminoterephthalate should be stored in a tightly closed container in a cool, dry, and well-ventilated area, away from incompatible materials such as strong oxidizing agents and acids. Protect from direct sunlight, heat, and moisture. Use appropriate safety measures and ensure all containers are clearly labeled. Follow local regulations for chemical storage and handling.
    Application of Dimethyl Aminoterephthalate

    Applications of Dimethyl Aminoterephthalate in Industrial Manufacturing

    As a direct producer of Dimethyl Aminoterephthalate, our experience centers on its function as a key intermediate in polymer and resin synthesis across demanding industrial ecosystems. The downstream sectors below reflect verified, scaled usage, technical details, and regulatory conditions based on our client integration and global export projects.

    1. PET Engineering Plastics and Films

    Polyethylene terephthalate (PET) resin manufacturers rely on Dimethyl Aminoterephthalate as a co-monomer for modifying polymer chain characteristics. By adjusting the amino substitution, resin formulators tailor intrinsic viscosity and crystallization rate, improving processability and dimensional stability for high-clarity films and durable engineering plastics. Producers introduce this intermediate at the esterification or polycondensation stage, where molecular architecture adjustments support end-use requirements for food packaging, electronics laminates, and industrial sheeting.

    Industry compliance standards

    • FDA 21 CFR 177.1630 for PET food contact materials
    • EU Regulation (EU) No 10/2011 on plastic materials and articles intended for food contact
    • ISO 9001:2015 for quality management in polymer processing plants
    • Japanese Food Sanitation Act (JHOSPA)

    Typical usage ratio

    • Added at 0.5 – 2.0 mol% of total terephthalate monomer feed for standard clarity PET; increased up to 5 mol% for specialty copolyesters. Resin producers adjust ratio based on target viscosity and end-use mechanical performance.

    Downstream process integration

    • Intake during the polycondensation reaction after initial glycolysis, typically preceding catalyst addition; fully reacts with ethylene glycol and other comonomers in melt-phase reactors.

    Final product types

    • Biaxially oriented PET films for packaging
    • Injection-molded electrical casings
    • Thermoformed sheets for food trays
    • High-barrier bottles for beverages

    2. High-Performance Polyamide Fiber Manufacturing

    Specialty polyamides for technical textiles, tire cords, and filtration media exploit Dimethyl Aminoterephthalate for enhancing fiber tenacity and moisture resistance. It is used to introduce functional side groups during condensation polymerization with diamines, supporting the formation of polymers with controlled molecular weight and improved heat resistance. Technical fiber plants precisely meter the material in direct melt-spinning processes, ensuring fiber morphology aligns with automotive and filtration regulations.

    Industry compliance standards

    • OEKO-TEX® Standard 100 for textile safety
    • ISO 14001 for environmental management during polymerization
    • REACH Annex XVII (EU) for restricted substances in synthetic fibers
    • ISO 9001 for fiber production traceability

    Typical usage ratio

    • Included at 1.2–3 mol% of total acid component; the precise level depends on the target tensile modulus, elongation rates, and downstream fiber drawing specifications.

    Downstream process integration

    • Dosed directly into the autoclave or continuous melt reactor with diamines, prepolymer filtration, and high-speed extrusion through spinnerets for fiber formation.

    Final product types

    • Industrial tire cord yarns
    • Technical textile staples
    • Filtration felts and spunbond fabrics
    • High-strength sewing and conveyor belts

    3. Liquid Crystal Polymer (LCP) Synthesis

    Manufacturers of liquid crystal polymers incorporate this intermediate to produce aromatic polyesters with distinct melting points and enhanced flow characteristics. Fine-tuning the degree of amination facilitates alignment and crystallinity, which is critical for injection-molded microelectronic components, connectors, and high-frequency PCB substrates. The compound enters the condensation sequence, reacting with diphenols and other specialty comonomers under vacuum/pressure cycles.

    Industry compliance standards

    • UL 94 for flammability of plastic materials
    • RoHS Directive (2011/65/EU) for electronic equipment
    • IEC 61249-2-7 for laminate materials used in PCBs
    • IATF 16949 for automotive electronics production

    Typical usage ratio

    • Formulators use 2–8 mol% during copolymerization, based on required anisotropy and flow properties; ratios increase with demand for low-warp, fine-feature molding.

    Downstream process integration

    • Added in batch or continuous reactors alongside other aromatic diacid esters and diphenols, followed by devolatilization and pelletization for later melt-processing.

    Final product types

    • Surface-mount electronic connectors
    • High-frequency PCB substrates
    • LED reflectors and housings
    • Precision gears for miniature motors

    4. Colorless Transparent Copolyester for Optical Applications

    Producers of optical-grade copolyesters add Dimethyl Aminoterephthalate as a chain modifier to suppress yellowing and optimize light transmittance. Its specific reactivity ensures controlled introduction of amino groups, reducing autofluorescence and improving UV stability in polymers destined for lenses, displays, and precision light guides. Dosing occurs at the monomer feed stage, integrated tightly into interfacial polycondensation or solid-state post-polymerization steps required by exacting optical standards.

    Industry compliance standards

    • ISO 8980-3 for optical properties of lens materials
    • EN ISO 13485:2016 for medical device optical components
    • RoHS 2011/65/EU for electronic display plastics
    • ASTM D1003 for haze and transmittance in transparent plastics

    Typical usage ratio

    • Introduced at 0.8–2.5 mol% of total acid monomer, optimally balanced for transparency, minimal yellowness index, and reduced birefringence in final molded parts.

    Downstream process integration

    • Metered with diol/diacid feed in batch reactors; some optical-grade applications apply further solid-state polymerization to achieve precise molecular distribution before extrusion.

    Final product types

    • Lens blanks for prescription and protective eyewear
    • Light diffusers for LED and display panels
    • Microfluidic device chips
    • Optical-grade transparent sheets
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    Certification & Compliance
    More Introduction

    Dimethyl Aminoterephthalate: A Closer Look from the Manufacturer

    Dimethyl aminoterephthalate represents a refined intersection of chemistry and industrial application. Few products in our catalog hold as much importance for our teams on the production floor and for downstream partners shaping tomorrow’s materials. Crafted with a deep understanding of reaction chemistry and purity control, it stands as a reliable building block that continues to serve manufacturers aiming for high-quality intermediates.

    The Character of Dimethyl Aminoterephthalate

    The chemical formula, C10H11NO4, gives a hint of its complexity, carrying both ester and amine functionality. Through hands-on experience, our process specialists know this brings a reactive nature that sets it apart from simpler aromatic esters. During synthesis, controlling moisture, oxygen, and precise temperature yields a white to off-white crystalline powder. Each batch undergoes HPLC and GC screening not just for purity but for trace amine content, as even a small shift may impact further processing. Purity levels typically exceed 99.5% due to investment in dedicated isolation and drying lines, rather than multi-use vessels that invite cross-contamination. That commitment stems directly from the demands of downstream synthesis, where even a hint of impurity can derail effectiveness in making agrochemical, pharmaceutical, and polymer intermediates.

    Performance Rooted in Application

    Every process technician in-house has watched polymer chemists prefer dimethyl aminoterephthalate for polyamide, polyester, and specialty fiber synthesis. It doesn’t just offer high reactivity. The structure of the amine group at the para position means it attaches selectively in condensation reactions. In contrast, dimethyl terephthalate lacks the reactivity provided by the amine group, often requiring tougher conditions and bringing a narrower range of end-products. This single distinction allows our product to deliver the intermediate performance properties valued in technical textiles or high-performance plastics. The purity and performance, as evidenced by low color and reliable melting behavior, help processors keep their production lines running overnight—without surprises from off-spec batches or color drift after processing. This predictability is what our chemical engineers build and verify in every run.

    Handling Differences: Practical Experience

    Some customers attempt short-cuts with unspecialized alternatives, quickly discovering unforeseen complications such as insoluble particulates or batch-to-batch color variation. The presence of an amine function in our dimethyl aminoterephthalate ensures far better solubility in commonly used aprotic solvents and smooth integration in multi-step synthesis, especially amid production scale-ups. Our technical support often hears about failures stemming from alternative sources or substitute aromatics clogging filtration equipment or producing off-odors. Our process avoids these issues through a closed-system workflow and post-reaction filtration, minimizing both insoluble residues and unwanted byproduct generation. For years, our hands-on chemists have stressed the importance of solvent compatibility and post-reaction workup. Small choices in raw material handling drive the long-term operability of our customers’ plants.

    Reliability, Not Hype

    On the floor, production crews see firsthand that genuine consistency in particle size and free-flowing texture make a difference for automated dosing or pneumatic transfer. Large clumps or variable dust levels produced by rotary drum processes can stall hoppers, which drives up maintenance surges. Direct observation over hundreds of batches has shown that our integrated crystallization equipment, operated under strict process windows, achieves smoother granules and lower residual solvent content. Those outcomes didn’t appear overnight—they are the result of years refining protocols and listening closely to feedback, not simply conforming to theoretical specifications or chasing marketing trends. Operators care about ease of handling, not just numbers on a certificate. Conversations between customers’ process engineers and our line supervisors often dig into these handling traits more than a spreadsheet ever could.

    Impact Beyond the Lab

    Dimethyl aminoterephthalate’s track record is not limited to reaction efficiency alone. In major polymer facilities, reliability in this intermediate translates directly into less downtime, lower frequency of line purges, and fewer filter changeouts. Line interruptions caused by inhomogeneous or impure feedstocks cost far more than raw material price savings ever could. One facility’s switch to our product led to a 17% drop in filter replacement rate and an 11% boost in reactor uptime over the course of a year. These aren’t just numbers—they mean fewer unscheduled overtime hours, less waste disposal, and more stable shift scheduling. Quality resonates throughout the entire value chain.

    Differences Beyond the Obvious

    Comparing dimethyl aminoterephthalate to familiar products such as dimethyl terephthalate or methyl p-aminobenzoate underscores how subtle molecular changes alter industrial practice. The latter, although less costly, tends to underperform where selective amination is crucial and carries a tendency to produce more volatile emissions in high-temperature steps. Beginners sometimes overlook regulatory scrutiny around these byproducts, facing compliance headaches during audits. Our direct process expertise gives customers clarity on endpoint emissions and facilitates documentation for authorities. This difference—honed over time in our production labs—helps our partners avoid pitfalls well before inspection teams arrive.

    The Manufacturer’s Role in Product Integrity

    We routinely see undue focus only on product purity, yet other attributes weigh just as heavily once a batch enters an actual plant environment. From particle flow to stability under variable humidity, details can dictate success. Years of testing show that stabilized dimethyl aminoterephthalate—protected properly during shipping and storage—reduces unwanted caking and hydrolysis, preserving material usability. Our logistics teams apply precise moisture barrier packaging for every order headed to Southeast Asia’s high-humidity summer or Europe’s colder months, extending shelf stability and reclaiming value lost in uncontrolled transit. The lesson, drawn through experience, is clear: process reliability does not stop at the tank farm or reactor vessel. It travels from our warehouse to customer’s feeder lines.

    Challenges and Practical Solutions

    Maintaining stringent impurity levels in every ton presents a real, ongoing challenge. Raw material volatility, changing suppliers, and global transportation pressures all test the system. Rather than relying purely on batch-end analysis, our strategy includes in-line QC checkpoints, linking real-time feedback to our control room dashboards. This approach, adopted through hard-won lessons after an early contamination scare, allows operators to intercept off-specification runs before full-scale blending. Customers receive not just a tested product, but an audited supply chain. This builds tangible trust—useful during audits and regulator visits—and ensures repeatable results without last-minute adjustments or material recalls. Direct lines with customers help us catch small shifts in user requirements, such as trace heavy metal thresholds tightening, or new solvent restrictions in target applications. Adapting at the source saves time and frustration later on.

    An Evolving Landscape

    Global expectations for feedstock sustainability and reduced waste remain on the rise. Our teams have shifted toward greener processing, integrating closed-loop solvent reclamation for every synth run, and increasing mass balances to recapture nearly 95% of spent methanol. Development teams consult with environmental engineers to verify not only regulatory limits but also realistic recycling rates before scaling new lines. Materials that can adapt to tougher circular economy criteria, such as our dimethyl aminoterephthalate, find favor with growing segments of customers looking to certify ISO or meet evolving internal sustainability benchmarks.

    Supporting Industry Shifts

    Switching to this intermediate has improved process robustness for customers moving away from legacy plastics. As specialty material science edges toward high-performance membranes, fire-retardant fibers, and new generation medical polymers, suppliers need not only technical-grade intermediates but also deep collaboration. Our production and technical teams respond with method validation data, compliance support, and onsite troubleshooting if integration challenges surface. We exchange learnings with researchers optimizing novel catalysts or working on continuous reaction technology. Our technical bulletins reflect detail learned at scale, not just at benchtop. For example, we’ve seen pilot users succeed when increasing pre-mixing anchor times to reduce hot-spot formation, leading to fewer side-reactions. These specifics reflect a culture of practical learning and adaptability, earned through years in the field.

    Accumulated Trust, Not Just Certificate Claims

    Customers often seek a minimum spec but end up relying on deeper qualities only revealed through repeated orders—such as consignment batch accuracy, response during unforeseen logistic delays, and readiness to take back problem shipments. Stories of vendors vanishing after the sale circulate in industry circles. As a stable, manufacturer-managed operation, we take pride in running direct distribution, standing behind every outgoing lot number with full traceability—extending from sourcing through post-shipment support. Plant chemists, warehouse teams, and account handlers all engage with customers’ process improvements and troubleshooting. That ongoing practical engagement, not a one-sheet brochure or online price, sets the real standard for reliability.

    Meeting Specific Needs Without Cutting Corners

    While short-term market pressures tempt some towards spot buying or speculative resourcing, the requirements for consistent product behavior in complex synthesis demand more. Internal R&D, guided by real customer challenges, still invests in new purification and process intensification techniques. Periodic pilot campaigns benchmark current output against both global standards and next-generation internal benchmarks. Scale-up insights enable us to foresee possible roadblocks and improve overall system economics. For example, adoption of hybrid filter-dryer assemblies led to faster cycle times and reduced residual solvent in recent campaigns—benefits that flowed directly to customers without cost pass-throughs. As newer applications for dimethyl aminoterephthalate emerge in electronics and specialty coatings, this problem-solving approach grows ever more vital.

    Supporting Workers and the Community

    Workforce safety threads through every aspect of making dimethyl aminoterephthalate. Periodic operator training, close engagement with industrial hygienists, and routine audits of PPE procedures have kept incident rates on a steady decline. This translates to a team that returns home safe every night—families rely on it. By working closely with environmental health officers and community liaison groups, we’ve reduced process emissions, shared water treatment capabilities with neighboring businesses, and promoted transparent, real-time environmental reporting. Community confidence has grown as a result, and environmental stewardship has become a central theme in our local operations.

    Matching Changing Market Needs

    Customers continue driving innovation in technical plastics, medical films, and emerging fields like 3D microfabrication. Our product team works to keep pace, refining the process to adjust particle morphology or further tighten specification windows in response to analytical advances in end-user labs. These joint development projects—coordinated across multiple continents and technical teams—deliver both primary product and application support at scale rather than in isolation. Product evolution mirrors customer problems as they arise, from incorporation in UV-stable pharmaceutical coatings to integration in e-textile substrates. Clear communication and technical partnership matter as much now as they did decades ago, and this collaboration underpins every improvement we introduce.

    Looking Ahead

    Demand for specialized intermediates like dimethyl aminoterephthalate keeps expanding as customers target more stringent technical, environmental, and regulatory challenges. Our teams understand that chemical supply isn’t about filling orders but enabling partners to innovate without unnecessary setbacks, downtime, or compliance trouble. Experience, measured in years of iterative improvement, frequent plant customer visits, and continuous technical exchange, drives ongoing advancement in both product and service. That whole-of-team commitment keeps the pathways open for new industrial and scientific discoveries, from one production run to the next.

    Our Experience: The Difference You Can Rely On

    Dimethyl aminoterephthalate, as produced here, does more than meet a global standard for purity. It carries a layer of rigor and care delivered by seasoned process engineers, checked again by methodical technicians, and supported by a culture that values durable customer relationships over short-term wins. Each lot number carries a history of challenges faced and improvements made. Customers, suppliers, and team members together set that bar—and it continues to rise, not by chance, but through hands-on experience and mutual learning.