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HS Code |
358774 |
| Chemicalname | 2-Ethyl-1,3-Cyclopentanedione |
| Casnumber | 823-36-9 |
| Molecularformula | C7H10O2 |
| Molarmass | 126.15 g/mol |
| Appearance | Yellow to orange crystalline solid |
| Meltingpoint | 42-47 °C |
| Boilingpoint | 210-212 °C |
| Density | 1.06 g/cm³ |
| Solubilityinwater | Slightly soluble |
| Flashpoint | 91 °C |
| Smiles | CCC1=C(O)CC(=O)C1 |
| Refractiveindex | 1.471 (20 °C) |
| Pubchemcid | 13462 |
As an accredited 2-Ethyl-1,3-Cyclopentanedione factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Amber glass bottle containing 100 grams of 2-Ethyl-1,3-Cyclopentanedione, sealed with a tamper-evident cap and hazard labeling. |
| Shipping | 2-Ethyl-1,3-Cyclopentanedione should be shipped in tightly sealed containers, protected from moisture and light. It must be handled according to standard chemical safety procedures, with appropriate labeling. Store and transport in a cool, well-ventilated area away from incompatible substances, following all applicable local, national, and international regulations for chemical transport. |
| Storage | 2-Ethyl-1,3-cyclopentanedione should be stored in a tightly closed container, in a cool, dry, and well-ventilated area away from direct sunlight. Keep away from sources of ignition, heat, and incompatible substances such as strong oxidizers. Ensure proper labeling and secondary containment to prevent leaks or spills. Store at recommended temperatures, and avoid contact with moisture and strong bases. |
Applications of 2-Ethyl-1,3-Cyclopentanedione in Industrial Manufacturing2-Ethyl-1,3-Cyclopentanedione serves as a key intermediate in a variety of specialized chemical processes. Our facility supplies this raw material to industry leaders active in pharmaceutical synthesis, agrochemical formulation, advanced pigment manufacturing, polymer additives, and specialty fragrance compound production. Below, we detail specific real-world downstream uses with relevant compliance, formulation, process, and end-use information. 1. Pharmaceutical Intermediates for Active Ingredient SynthesisMajor pharmaceutical manufacturers use this compound as a core building block in the synthesis of certain heterocyclic drug molecules, especially for the preparation of antibacterial and antiviral agents. Its diketone structure enables specific condensation reactions under controlled conditions. The critical purity and trace metal levels must meet ICH Q3D guidelines for downstream API production. Precise dosage ratios depend on the target molecule and the stoichiometry of the cyclization route. Typical use integrates the diketone in the early stage of N-heterocycle construction, followed by hydrogenation and selective functionalization. End users formulate various prescription drugs targeting infectious diseases. Industry compliance standards
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2. Agrochemical Synthesis: Crop Protection AgentsLeading agrochemical producers apply this diketone to create functionalized cyclic structures vital for herbicide and fungicide active ingredients. Because product purity impacts downstream efficacy and formulation stability, plants adhere strictly to FAO and national requirements for raw material control. Usage rates are guided by crop protection registration data and process mass balance calculations. The diketone typically reacts with hydrazines or amidines in closed systems, operating under controlled pH and temperature profiles to ensure conversion rates align with plant throughput targets. The resulting crop protection agents, including cyclopentane-based fungicides and pre-emergent herbicides, undergo secondary formulation and granulation before market release. Industry compliance standards
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3. Advanced Pigment Synthesis for Industrial CoatingsPigment manufacturers employ this diketone to produce specialty metal-complex dyes and colorants, particularly those requiring enhanced lightfastness and solvent resistance. Facilities follow ASTM methods and RoHS guidelines for metal content and process safety. Usage ratios hinge upon the chelation reaction’s stoichiometry with the chosen transition metal, typically manganese, iron, or cobalt. The diketone is introduced during ligand precursor formation, prior to complexation and crystal precipitation. Its inclusion enables production of vibrant organic pigments used in automotive finishes and industrial powder coatings, meeting demanding color stability standards. Industry compliance standards
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4. Polymer Additives for Anti-Yellowing FormulationsManufacturers in the plastics industry utilize the diketone as part of additive blends that inhibit yellowing and oxidative degradation, particularly in polyolefin and polyurethane systems. All raw material inputs must comply with FDA and EU restrictions if end-use targets food packaging or consumer goods. Additive dosage is based on required product lifespan and polymer processing temperatures, often falling within a narrow range to balance stability and cost. The diketone is blended during masterbatch composition or direct compound addition at extrusion or reaction molding stages. Finished products exhibit improved resistance to light-initiated yellowing, supporting longer-use cycles for outdoor and transparent plastics. Industry compliance standards
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5. Specialty Fragrance and Flavor Compound SynthesisLeading fine chemical producers incorporate this diketone as a precursor in the creation of musk-like fragrance elements and specialty flavor notes. All materials intended for food or cosmetic use must comply with FEMA GRAS, IFRA safety guidelines, and national regulations. Reactant ratios depend on desired odor threshold and compound purity, closely monitored via analytical QC during scale-up. The diketone undergoes aldol condensation reactions to construct complex cyclic aroma molecules, typically followed by hydrogenation and distillation steps. End products serve in premium fragrance oils, essence blends, and special flavorings for beverages and confectionery. Industry compliance standards
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In the decades we’ve spent refining complex organics, 2-Ethyl-1,3-Cyclopentanedione has earned a distinct spot among specialty building blocks. We draw on years of hands-on synthesis, coming from a background where reproducibility and purity are daily priorities, not afterthoughts. Our open reactors have seen a steady demand for cyclopentanedione derivatives, but the ethyl-substituted version always finds itself in tougher, more exacting pipelines that call for both stability and chemical precision.
From the first batches we made on pilot scale, we noticed that subtle tweaks in hydrogenation conditions or condensation timings affect not just yield, but how clean the product actually comes off the line. Removing residual byproducts requires more than what simple distillation delivers. By tuning reaction pH and controlling temperature gradients across the vessel, we’ve learned to pull a product that passes today’s chromatographic and spectroscopic standards. This practical know-how couldn’t have come just from reading journals; it’s born from real, repeatable runs and the inevitable troubleshooting that follows.
For customers unfamiliar with the specifics of 2-Ethyl-1,3-Cyclopentanedione, the pure compound appears as a light yellow crystalline solid. Its molecular formula, C7H10O2, masks a useful trick: the balance of hydrophobic alkyl and keto groups lets it go places less functionalized diketones cannot. Where 1,3-cyclopentanedione itself tends toward broader reactivity, the ethyl variant offers better selectivity, limiting overreaction in stepwise syntheses or condensation cascades. Its melting range and physical profile lend themselves well to downstream processing. In day-to-day production, we see heterocyclic intermediates and flavor compounds at the receiving end of this molecule. The diketone’s ability to participate in Michael additions, Mannich reactions, and chelate formation has proven itself so often that process chemists in our plant ask for it by name.
Our batches typically come from multi-stage syntheses under cleanroom conditions. After raw material assay, our operators implement a solvent system chosen to limit side formation. We use continuous GC and HPLC to confirm product identity and monitor for known contaminants. Each run focuses on crisp cut points in distillation—fuming off low boilers, policing the high-boiling tails, and ensuring the ethylated diketone emerges free of residual solvents and heavy metals.
We’ve seen customers in fine chemicals, advanced materials, and R&D settings benefit most from single-digit parts-per-million impurity control. Powder consistency comes from a drying regime built to avoid thermal degradation, keeping the diketone within published melting point ranges without promoting decomposition or color change.
Unlike bulk commodity cyclopentanedione, our 2-Ethyl-1,3-Cyclopentanedione responds well to custom micronization. Often, a client in pharmaceuticals or perfumery requests a specific particle size distribution to match their formulation goals. After trials, we found that jet-milling produces the cleanest profiles, better than traditional grinding, because it limits potential oxygen pickup and keeps peroxide formation at bay. Storage and packaging directly follow, with inert conditions to preserve shelf life—simple, but critical steps we don’t overlook based on decades of experience.
2-Ethyl-1,3-Cyclopentanedione occupies an important crossroad in synthesis. In our plant, it acts as a key intermediate for complex ligands, flavorings, and pharmaceutical scaffolds. Flavors and fragrances houses rely on its diketone reactivity for the formation of both naturally inspired and new aroma compounds. The ethyl group, for example, modulates volatility and partitioning behavior, which allows formulators to fine-tune release curves or mimic specific scent notes more closely than with the unsubstituted cyclopentanedione.
Beyond flavor science, pharmaceutical teams approach us because they’ve mapped this diketone onto new heterocyclic cores and specialty building blocks. The presence of the ethyl group influences regioselectivity in condensation reactions—a feature that often means the difference between isolating the right intermediate, or losing starting material to side products. Many modern synthetic schemes, especially those moving away from legacy solvents or hazardous reagents, favor building blocks that are both stable and reliably available at the right purity grades. We learned from years of order fulfillment that research deadlines slip if intermediates arrive with inconsistent melting points or carry traces of residual solvents. Every synthesis, every order, and every feedback round shapes how we screen, pack, and deliver each batch.
Customers in materials science turn to our product for its ability to co-polymerize or chelate with metals. In these fields, minor differences in diketone side-chain length can impact optical, electrical, and mechanical properties of end materials. Our production team has worked side-by-side with industry researchers to refine purification so that trace byproducts do not sap catalyst performance or throw off polymer ratios. Small tweaks in the upstream preparation can alter how well one lot performs in pilot plant scale-ups. We treat every batch as an opportunity for feedback—and joint problem-solving—with end users.
The difference between a simple cyclopentanedione and its ethylated cousin proves significant over repeated cycles in the plant. By tweaking molecular weight and electronic profile, 2-Ethyl-1,3-Cyclopentanedione locks in higher selectivity and less off-target activity in condensation chemistry. Our pilot customers in the field have shared feedback after side-by-side testing: yields improve, purity levels rise, and less tarring occurs during large-scale evaporations. These real-world differences arise from the ethyl substituent’s ability to direct reactivity and improve phase separation during crystallization.
Compared to higher molecular weight analogs, such as aryl-substituted diketones, the ethyl variant presents a strong balance between reactivity and workability. It stays manageable across varying temperature and pressure profiles during manufacturing. Heavy, aromatic diketones sometimes prove slow to dissolve or hard to recrystallize, clogging up downstream filters and reactors. We find 2-Ethyl-1,3-Cyclopentanedione remains a reliable intermediate precisely because it resists such operational headaches.
Parallels to similar compounds demonstrate clear boundaries. Even minor changes in the cyclopentanedione family shift key handling parameters, from flash point to polarity. Practical differences show up not as abstraction, but as improved throughputs, simpler workup, and cleaner analytical certificates. In our experience, the ethylated diketone process remains more forgiving, an advantage for any scale-up scenario or new product launch.
Our team doesn’t believe in shortcuts, so we developed the purification process around what chemists ask for most. Over time, analytical demand shifted from classic colorimetric assays toward more rigorous trace impurity analysis. We answer these requests by batch-testing for known process contaminants and comparing every lot against internal retention samples. When researchers and production leads need assurance that a batch will meet next-step scale or regulatory review, our in-house QA becomes a resource—not just a checkbox.
We’ve dealt with off-spec shipments in our own supply chain over the years, so we recognize the inconvenience they cause. As a manufacturer, our reputation relies on repeatable quality; every failure to meet target specs translates into lost productive time for us and our customers. To minimize these issues, we keep tight rein on process deviations, log every deviation, and offer customer support that draws from actual troubleshooting experience, not generic responses.
Working at scale reveals issues you rarely encounter in lab glassware. For example, we’ve seen subtle differences in solvent grade, catalyst activity, and even ambient humidity lead to significant quality swings. Factory investments in environment control, as well as staged cleaning and equipment passivation, reduce chances for contamination or unexpected byproducts. These details may not show in a simple spec sheet, but they matter where it counts—in consistent, predictable downstream behavior.
Customers often raise questions about compliance, traceability, and regulatory adherence. Our plant sits within an audited supply network, so material trace channels remain open for any lot at any time. We prioritize working with audited, transparent suppliers for starting materials and invest in documentation to support traceability. With changing global regulations, especially in pharmaceutical and food applications, we dedicate resources to generating and updating required certification files. These won’t just sit in a drawer, either—teams consult them, auditors review them, and our own process improvements reference them year after year.
As process chemists ourselves, we understand the significance of maintaining workable relationships with regulatory agencies. We’ve seen firsthand how incomplete documentation or unclear impurity profiles can slow product registration or block an export application. For that reason, our lot records, confirmation analyses, and supporting data sets aim to anticipate what inspectors and clients look for. This goes beyond compliance—it’s about proactivity, preventing issues before they hit the customer or the market.
Modern manufacturing goes hand-in-hand with resource management. Our approach to producing 2-Ethyl-1,3-Cyclopentanedione draws on lessons learned from past decades’ environmental compliance efforts. In each cycle, we recover and reuse solvents where purity allows, limit wastage via tightly controlled reaction stoichiometry, and treat in-process waste streams using established best practices. Our technicians assess waste streams for safe disposal in line with current legislation, making us accountable to both community and customer.
Environmental claims mean little if not backed by daily habits. Our experienced staff direct every reaction, monitor all purification steps, and verify waste segregation according to method. These measures were not imposed overnight; they evolved from trial, error, and a willingness to adjust based on both regulatory and client expectations. Feedback from end-users seeking green credentials, or with additional disposal restrictions, routinely guides our incremental improvements.
We still consider ourselves partners in innovation, not just suppliers of compounds. Many collaborations with laboratories, startups, and established manufacturers began with an inquiry about diketones—and grew into long-term technical exchanges. By offering 2-Ethyl-1,3-Cyclopentanedione with tight, forthright batch control and responsive support, we play our part in enabling new explorations, whether in chemical synthesis, pharmaceutical discovery, or advanced materials design.
It’s a point of pride for our team that so many product launches or patent filings reference our diketone as a critical input. We don’t measure success solely by the tonnage shipped, but by the feedback from those who stretch the molecule into new domains. Our role continues at the interface of process reliability and synthetic creativity, always rooting improvements in feedback from real applications and daily production challenges.
Every plant manager and process chemist we’ve worked with understands—there are no perfect runs. Unexpected results always crop up: shifts in product color, unexpected impurity peaks, or reactivity that doesn’t match historical baseline. What we bring, as a manufacturer with long-running experience, is the tenacity and resourcefulness to trace the source, diagnose the fix, and communicate outcomes quickly. This level of transparency sets us apart from mere resellers or third-party traders.
Routine post-mortems of any deviation, whether in yield, assay, or customer-reported performance, strengthen our next cycle. We keep detailed logbooks, discuss findings in cross-functional teams, and build cumulative experience that shows up in cleaner, surer products down the line. Our direct engagement with users—helping troubleshoot a synthetic roadblock, analyzing side products, or discussing an alternative workup—does more than fix the immediate problem. It grows a knowledge base we feed back into process and product adjustments, ensuring the molecule not only serves the current generation of projects but paves the way for future discoveries.
Manufacturing 2-Ethyl-1,3-Cyclopentanedione challenges and excites us precisely because it sits at a crossroads between dependable chemistry and the ongoing evolution of fine chemical manufacturing. Each run asks for fresh attention to detail. Regulations keep moving. Customer requirements continue to evolve. The only constant is direct feedback from real users and a readiness to iterate on production, purification, and delivery. That’s the foundation supporting every flask, drum, and kilogram leaving our lines.
Building from customer application stories, regulatory demands, and operational feedback, we aim to offer more than just size, assay, and spec sheets. Time and again, expertise proves its worth not only in raw numbers, but in the confidence customers place in each batch—from R&D test tubes to manufacturing-scale reactors. We stay rooted in transparency, direct technical engagement, and an honest assessment of areas for continual improvement. Every kilogram delivered represents not just a product, but a commitment earned over years of practice, learning, and the shared pursuit of chemical progress.