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3,5,5-Trimethyloxazolidine-2,4-Dione

    • Product Name 3,5,5-Trimethyloxazolidine-2,4-Dione
    • Alias Trimethadione
    • Einecs 202-517-3
    • 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

    330336

    Chemical Name 3,5,5-Trimethyloxazolidine-2,4-dione
    Molecular Formula C6H9NO2
    Molar Mass 127.14 g/mol
    Cas Number 13566-31-1
    Appearance White to off-white solid
    Melting Point 70-73°C
    Solubility In Water Slightly soluble
    Density 1.14 g/cm3 (approximate)
    Structure Five-membered oxazolidine ring with three methyl groups at 3,5,5 positions
    Synonyms Trimethadione impurity D; 3,5,5-Trimethyloxazolidinedione
    Smiles CC1(C)CON(C1=O)C=O
    Inchikey SANDHGDKRSGRSO-UHFFFAOYSA-N
    Storage Conditions Store in a cool, dry place, tightly closed

    As an accredited 3,5,5-Trimethyloxazolidine-2,4-Dione factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The packaging is a sealed amber glass bottle containing 100 grams of 3,5,5-Trimethyloxazolidine-2,4-dione, with hazard labeling.
    Shipping 3,5,5-Trimethyloxazolidine-2,4-dione should be shipped in tightly sealed containers, protected from moisture and incompatible materials. Store and transport at room temperature, complying with local and international chemical transportation regulations. Ensure proper labeling and documentation. Handle with care to prevent leaks or spills, and keep away from heat and direct sunlight during transit.
    Storage **3,5,5-Trimethyloxazolidine-2,4-dione** should be stored in a tightly sealed container, away from incompatible substances such as strong oxidizers and acids. Keep it in a cool, dry, and well-ventilated area, protected from direct sunlight and moisture. Ensure the storage area is equipped with appropriate safety measures and clearly labeled to prevent accidental misuse or exposure.
    Application of 3,5,5-Trimethyloxazolidine-2,4-Dione

    Applications of 3,5,5-Trimethyloxazolidine-2,4-Dione in Industrial Manufacturing

    3,5,5-Trimethyloxazolidine-2,4-Dione, also known as Trimethylhydantoin, is a specialty intermediate utilized in a select range of mature, industrialized sectors. Our expertise in manufacturing this heterocyclic compound ensures consistent quality and traceability for demanding downstream applications. Below, we detail the primary industrial use cases, technical benchmarks, and integration details that our direct manufacturing clients require for compliance, efficiency, and product development.

    1. Synthesis of Quaternary Ammonium Biocides

    Industrial biocide manufacturers use Trimethylhydantoin as a key precursor for producing hydantoin-based quaternary ammonium compounds. These downstream reactions rely on precise feedstock composition and result in finished products with defined antimicrobial performance required for water treatment and disinfectant applications. The chemical enters the synthesis via controlled alkylation and quaternization steps, demanding accurate input concentrations to achieve regulatory product profiles.

    Industry compliance standards

    • U.S. EPA FIFRA (40 CFR Part 158) for antimicrobial actives
    • EU Biocidal Products Regulation (BPR, Regulation (EU) 528/2012)
    • Active Substance Approval—Product Type 2 & 4 (PT 2: Disinfectants, PT 4: Food and feed area disinfectants)
    • National and regional drinking water treatment guidelines for allowable actives

    Typical usage ratio

    • Dosage in the quaternization batch typically ranges from 0.75 to 1.2 molar equivalents relative to alkyl halide; minor adjustment per hydantoin ring content and targeted molecular weight.

    Downstream process integration

    • The material is directly charged into the reactor during the alkylation step, following pre-purification and confirmation of critical impurity metrics (water & amine content); process temperature controlled at 60-80°C for 3–5 hours.

    Final product types

    • Industrial quaternary ammonium biocides for recirculating cooling water systems
    • Sanitizers for food-contact and public health applications
    • Preservatives for cleaning formulations

    2. Intermediate in Photoresist Manufacturing for Microelectronics

    Producers of positive photoresist chemicals leverage Trimethylhydantoin as a photoreactive intermediate. Its integration into chemical amplification systems contributes to improved pattern transfer and etch resistance for semiconductor device fabrication. The raw material is introduced in specific condensation and coupling reactions to achieve sensitive photoactive resins required by advanced lithographic processes.

    Industry compliance standards

    • IATF 16949: Quality Management in Automotive Electronic Supply Chain
    • SEMI C57-0301: Specifications for Photoresist Materials
    • ISO 16232: Cleanliness of Semiconductor Process Chemicals
    • ICP-MS Quality Release Protocols for trace metallic impurities

    Typical usage ratio

    • In photoresist resin syntheses, content varies from 3 to 6 wt% of total monomer feed, adjusted based on targeted sensitivity and molecular structure of resist.

    Downstream process integration

    • Material is condensed with phenolic or acrylic resins during step-growth polymerization, fed in the prepolymer mixing stage under inert atmosphere before photoactive compound grafting.

    Final product types

    • Positive-tone photoresist solutions for semiconductor wafer fabrication
    • Microelectronic patterning chemicals for advanced IC manufacturing
    • Printable etch-resistant coatings for LCD and MEMS processes

    3. Synthesis of Active Pharmaceutical Ingredients (API) Intermediates

    Pharmaceutical fine chemical companies employ Trimethylhydantoin in the multi-step synthesis of various hydantoin-based drug intermediates. The material's high purity profile and strict regulatory documentation enable consistent performance for GMP-bound production. Production teams introduce it during controlled cyclization and alkylation reactions essential to the final pharmacophore construction.

    Industry compliance standards

    • ICH Q7 GMP Guide for Active Pharmaceutical Ingredients
    • Chinese Pharmacopoeia & European Pharmacopoeia grade requirements for chemical intermediates
    • ISO 9001:2015 Quality Management for pharmaceutical input materials
    • DMF (Drug Master File) submission protocols where required

    Typical usage ratio

    • Applied in intermediate synthesis at 0.85–1.00 molar equivalents relative to target amine/ester group; specific content varies with the structural complexity of intended hydantoin API pathway.

    Downstream process integration

    • Material is charged in batch reactors during ring-closing cyclization and substituted hydantoin assembly; process monitored for yield and impurity profile, using HPLC/GC control prior to downstream hydrogenation or derivatization.

    Final product types

    • Hydantoin-based API intermediates (e.g., anticoagulants, anticonvulsants)
    • Chiral auxiliaries for stereospecific synthesis
    • Bulk APIs after final molecule completion

    4. Raw Material for Cosmetic Preservative Manufacturing

    Personal care preservative formulators use Trimethylhydantoin to manufacture hydantoin-based antimicrobial blends for creams, lotions, and hair care formulations. The chemical serves as a starting material in Mitsunobu-type and alkylating reactions that produce DMDM Hydantoin, a globally recognized cosmetic preservative. Stringent analytical criteria and documentation support compliance with cosmetic ingredient codes and international registration systems.

    Industry compliance standards

    • EU Cosmetics Regulation (EC) No 1223/2009 for finished preservative safety
    • U.S. FDA Code of Federal Regulations (CFR) Title 21, Section 700–740
    • INCI (International Nomenclature of Cosmetic Ingredients) registry listing
    • ISO 22176: Cosmetics Microbiology – Guidelines for Preservative Testing

    Typical usage ratio

    • In preservative production, the material is added at 0.9–1.1 molar ratio relative to formaldehyde donors or methylating agents; operational range allows for shelf-life or preservation challenge targets.

    Downstream process integration

    • Charged into reaction vessels at the primary alkylation or condensation step; impurity and residual monomer testing performed before dilution and blending to cosmetic grade concentrate.

    Final product types

    • DMDM Hydantoin cosmetic preservative
    • Shampoo and conditioner preservative blends
    • Personal care creams, lotions, and wipes with built-in antimicrobial function

    5. Auxiliary in Polyurethane Additive Manufacturing

    Polyurethane modifiers and specialty additive manufacturers utilize Trimethylhydantoin as an auxiliary chain extender or crosslinking agent. In this downstream application, the compound enhances flexibility and abrasion resistance of the final elastomer. The raw material enters the process during the prepolymer formation or post-curing blending phase, with full traceability required under consumer and industrial PU regulations.

    Industry compliance standards

    • REACH Regulation (EC) No 1907/2006 for polyurethane chemicals registration
    • ISO 9001:2015 Quality Management for chemical input control
    • UL 94 (Flammability of Polymer Materials) for final PU performance
    • Directive 2011/65/EU (RoHS) for electrical/electronic PU applications

    Typical usage ratio

    • Feed addition ranges from 0.5–1.5 parts per hundred polyol (phr), typically optimized by lab trials to balance crosslink density and mechanical performance of end elastomers.

    Downstream process integration

    • Added during the polyol blending or prepolymer reaction stage; post-addition, manufacturers run NCO-index tests for process verification. Final curing occurs after additive dispersion.

    Final product types

    • PU elastomer rollers and wheels
    • Industrial and automotive PU gaskets
    • High-abrasion PU coatings and adhesives
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    Certification & Compliance
    More Introduction

    3,5,5-Trimethyloxazolidine-2,4-Dione: Perspective from the Manufacturer’s Floor

    Our Experience and Commitment Behind the Chemistry

    At the heart of our operation, 3,5,5-Trimethyloxazolidine-2,4-dione—known among process engineers by the synonym "Dimethylhydantoin"—plays a consistent role in real-world industrial chemistry. We manufacture this compound according to tightly controlled conditions, starting with high-purity raw materials and refined synthesis techniques. Decades in the business have shown us that details matter. Even minor fluctuations in structure or content affect the outcomes our partners require.

    Product Specifics and Why Structure Matters

    This hydantoin derivative shows up as a white, crystalline substance, stable under common ambient conditions. Since the market demands a spectrum of batch sizes, our plant supports flexible output with batch-scale, semi-bulk, and larger bulk manufacturing lines. Each production run consistently achieves purity levels that surpass 99%, a standard we verify with HPLC and NMR testing in-house. Moisture, trace impurities, and particle size distribution stay within the narrow range that decades of customer feedback have demanded.

    Chemically, the ring system of 3,5,5-Trimethyloxazolidine-2,4-dione features three methyl groups attached to a hydantoin backbone. That difference in methyl substitution sets it apart from simpler hydantoins or structurally similar compounds. Those extra methyl groups impact both solubility in organic solvents and reactivity—fine points, but crucial ones for product formulators.

    Industrial Uses and Application Insights

    Over the years, we’ve seen 3,5,5-Trimethyloxazolidine-2,4-dione pulled into a range of technical niches. Its main role lands in specialty synthesis: as an intermediate for pharmaceuticals, agricultural chemicals, and certain polymer stabilizers. Some clients use it as a building block for newer active molecules; others appreciate its ability to contribute specific electronic or steric characteristics during reaction steps.

    In one recent example, a global pharma manufacturer required a consistent supply for a targeted batch process. Yield deviation traced directly to trace impurity profiles, which reminded us how tight controls on both starting purity and process stability turn into direct value for our partners. Sometimes our technical support team gets called in for troubleshooting, helping customers optimize their use by adjusting variables such as solvent, catalyst, or reaction time. These aren’t abstract recommendations—we base them on in-plant trials and production experience.

    How Specifications Fill the Gaps Between Lab and Line

    In our labs, we always match the specs with the practical, real-world realities that customers face. Anyone purchasing raw materials at volume expects a certificate of analysis to tell the truth, not just to satisfy formalities. Every kilo released shows surface area, bulk density, melting point, and analytical purity. We’ve learned through customer audits that documenting these datapoints not only supports regulatory submissions but also keeps their own trouble-shooters happy.

    Several smaller buyers—emerging pharmaceutical dev shops or technical start-ups—have shared stories about supply headaches from other vendors. Batches arrived with ambiguous labeling, variable crystal habits, or high moisture. Those inconsistencies cause procedural stops and unpredictable outcomes. Our manufacturing lines run internal QA checks at each point: crystallization, drying, packaging. We use nitrogen blanketing and moisture-absorbing liners in our drums and bags to protect the material during shipment. This comes from seeing what works, not from theory.

    End-Use Impact: From Building Block to Finished Product

    In pharmaceutical R&D, 3,5,5-Trimethyloxazolidine-2,4-dione acts as a stepping stone, often appearing in the middle of multi-stage syntheses. This isn’t glamorous, but it’s essential. Its ring structure and functional groups offer protected sites for chemical modification. Sometimes our technical staff gets calls about modifying methyl positions or improving batch consistency to support a different synthetic route. In these cases, we work with customers’ process engineers to tailor our product, adjusting parameters or even creating custom batches.

    Polymers and plastics manufacturers have also adopted this compound for specialty stabilizer chemistries. Comparison with related hydantoins shows that the trimethyl group arrangements on 3,5,5-Trimethyloxazolidine-2,4-dione lead to improved resistance to degradation or color change over time. Again, empirical testing across batches made these properties obvious, especially as clients tried to reduce their own additive levels without sacrificing end-product lifespan.

    Why Our Production Approach Sets Us Apart

    Meeting consistent purity isn’t the full story. We’ve found that controlling process throughput, filtration steps, and temperature gradients all shape the crystal habits and flow properties of the finished powder. Several partners have remarked on the product’s ease of handling and minimal caking, even after months in storage. We don’t chase appearance for the sake of brochures; our improvements arise from practical gains—material that transfers well, dissolves cleanly, and weighs out without static issues.

    This approach differs sharply from what we’ve seen with certain technical-grade products from offshore sources. Here, packages may arrive looking similar, but unchecked crystal fines and variable water content plague users downstream. Our approach uses closed-loop monitoring, high-efficiency dust capture, and multi-stage drying. This reduces contamination risk and supports easier, safer drum-openings on customers’ lines. Every tweak we’ve adopted started as a response to loss data or a client’s call about an unplanned downtime incident.

    Handling Quality and Supply Chain Pressures

    These days, reliability in the chemical supply chain means more than keeping barrels moving. Geopolitical volatility, changing regulatory rules, and shifting user specs put real pressure on manufacturers. We remain nimble by holding raw material buffers, running safety stocks in finished goods, and scheduling cross-trained shifts that can keep flow steady during supply or workforce shocks. Just last year, a transport bottleneck delayed global shipments of essential precursors. Thanks to our planning, we kept product moving with no disruption, a point not lost on long-term manufacturing partners.

    On the quality front, we routinely bring in auditors from client companies. Walking them through our plant, showing real-time monitoring screens, and opening our QA logs gives them confidence about traceability from source to sale. As regulations for pharmaceutical intermediates or REACH-listed chemicals grow tighter, we keep pace with frequent reviews and documented validation runs. Customers face enough obstacles on the regulatory front; our transparency keeps their filings and processes on track.

    Lessons Learned from Industry Collaboration

    Chemical manufacturing, as we see daily, rewards sustained attention. Clients appreciate the consultative touch: we don’t just sell the product, but help with practical questions about use, storage, or regulatory submissions. One customer in the agchem field once asked for custom granulation to improve solubility in their reactor. We ran side-by-side trials, sent comparative samples to their facility, and documented everything. This experiment led us to refine our own drying process, benefiting future clients with more uniform flow and improved yield in their own reactors.

    Close ties with end users also keep us honest when troubleshooting supply or process hiccups. Several years ago, a run of higher-moisture product drew attention during a large-scale solvent extraction. The off-spec batch prompted a full review; we modified our dryer controls and replaced a critical filter. Today, our specification sheets show average moisture values below a tenth of a percent—measurable only by Karl Fischer titration—because these lessons become part of our production culture, not just the next web brochure.

    Comparison: 3,5,5-Trimethyloxazolidine-2,4-Dione Versus Related Technical Products

    Most process engineers or bench chemists want clear distinctions between similar molecules. In our own trials and through customer reports, 3,5,5-Trimethyloxazolidine-2,4-dione stands out from unsubstituted hydantoin and the closely related 5,5-dimethyl counterpart. The three methyl groups in our product shift solubility, lower melting point slightly, and make the molecule less likely to form stubborn crystals at low temperatures. These features make it preferable in liquid-phase synthesis or wherever material has to clear quickly through filtration.

    Adopting this more substituted analog has let some of our pharmaceutical and agchem partners streamline their purification protocols. Comparing yields, reaction rates, and work-up times, we consistently receive positive feedback on the operational impact of these subtle molecular differences. These aren’t theoretical: plant engineers and QC managers tell us directly about solvent reduction, shorter cycle times, and easier clean-up.

    In contrast, some off-the-shelf grades from unidentified sources often feature visible particulate, unpredictable odor, and inconsistent response under heat. Buyers facing these headaches risk production line delays, higher maintenance, or failed final analyses. Our approach gives them peace of mind that every batch will behave predictably, saving time and keeping compliance teams satisfied.

    How Customer Feedback Drives Our Continuous Improvement

    While chemists might focus on theoretical yields, process operators focus on the day-to-day: how material pours, dissolves, and holds up over storage. We built our entire product line by listening to these operators, adjusting our practices to match their reality. Customer site visits, annual surveys, and regular technical review meetings feed directly into our process control updates and future investments.

    Feedback about storage stability, for example, led us to trial new packaging liners and moisture absorbers. Reports about inconsistent powder pour in winter months sent us back to the drying and size-reduction steps, upgrading our equipment for tighter thermal and humidity control. Each improvement—a better filleting baffle, an upgraded mill, smarter packaging—results from these hands-on insights.

    Our technical sales group regularly compiles reports that blend real-world customer usage with lab analysis, highlighting any out-of-spec events and root cause findings. Sharing these openly with our production leads has driven measurable improvements, not just in headline metrics like purity or flow, but in how each lot performs under industrial conditions.

    Environmental and Compliance Considerations

    Environmental responsibility shapes every modern chemical plant, and ours is no exception. Each step in the process—solvent selection, waste handling, energy use—faces ongoing scrutiny, both internally and from outside reviewers. Over the past decade, tightening standards on emissions and waste drove upgrades across our reactor systems and filters.

    We now recycle process solvents wherever feasible, monitor emissions in real time, and use condensed-phase separation to minimize waste. These practices came from necessity, adapted to tighter disposal requirements and responsible stewardship. Auditors and certification teams walk our floors and see these controls in practice. End users downstream also benefit, because our proven track record simplifies their own audits and documentation.

    Regulatory compliance, especially under evolving frameworks like REACH or global pharma standards, prompted us to invest in updated documentation and support for change-control procedures. Customers value this support, especially as they face increasing demands for full traceability from source compound to finished product. We help by keeping detailed records and making updates promptly whenever formulation, process, or market rules require.

    The Human Perspective: Manufacturing Staff Behind the Scenes

    Much of the real work in chemical manufacturing gets done by people whose names rarely reach customers. Our teams learn through hands-on apprenticeship, troubleshooting an array of plant challenges. An electrical fault in a dryer circuit, a temperature deviation in the crystallizer, a packaging tear—these get solved in real-time, long before the finished product heads out the door.

    One production shift leader, with over twenty years on the line, catches variances through smell, touch, and sight as much as laboratory data. This blend of skill and dedication shapes how we spot and correct off-normal events. Maintenance staff track pump noise, operators watch for subtle changes in powder consistency, and QA staff test samples at each step. This embedded expertise helps us maintain a level of product consistency that no remote-sourced material can match.

    We prioritize continuous training, both for new hires and experienced operators. Anyone stepping onto our plant floor finds updated SOPs, support for technical education, and real accountability for safety and product quality. These investments show up in every batch of 3,5,5-Trimethyloxazolidine-2,4-dione that leaves our facility.

    Looking Forward: Meeting Industry Needs in a Changing World

    As the landscape for specialty chemicals evolves, staying ahead means investing in both equipment and people. We know markets for intermediates like 3,5,5-Trimethyloxazolidine-2,4-dione remain sensitive to price, quality, and documentation. To serve our customers well, we keep an eye on technical trends, new applications, and regulatory changes that could require formulation or supply adjustments.

    Current plans include expanding reactor capacity, employing new continuous drying systems, and further integrating online QC analysis. Regular dialogue with customers shapes every aspect of our upgrade strategy. Pharmaceutical and agchem partners regularly trial our new production lots, reporting back field data that shape both process tweaks and future investments.

    We also monitor sustainability initiatives, encouraging a reduction in solvent use and energy demand across our production lines. While legislative guidelines for hydantoin derivatives continue to evolve, our long-term presence in this sector means we maintain compliance records, offer detailed technical documentation, and proactively update customers on any regulatory changes affecting their supply chain.

    Conclusion From the Factory Floor

    Shipping a high-quality batch on time feels like a shared win for everyone involved—from the technical staff monitoring the synthesis, to the operators packaging the finished product, to the engineers and scientists at partner sites relying on our material. Beyond meeting purchase orders, our focus rests on making sure each lot of 3,5,5-Trimethyloxazolidine-2,4-dione delivers operational value, reproducibility, and peace of mind.

    For new partners and longtime users alike, we offer insights not just into what the molecule is, but how it performs where it matters most: on the lab bench and in the plant. Years of practical, day-to-day production experience turn into the consistent, high-purity product that supports some of the world’s most innovative and demanding industries.