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Diethyl Glutarate

    • Product Name Diethyl Glutarate
    • Alias Glutaric acid diethyl ester
    • Einecs 203-744-6
    • 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

    941364

    Cas Number 701-55-3
    Iupac Name Diethyl pentanedioate
    Molecular Formula C9H16O4
    Molar Mass 188.22 g/mol
    Appearance Colorless liquid
    Boiling Point 226-229 °C
    Melting Point -35 °C
    Density 1.01 g/cm³
    Refractive Index 1.422
    Flash Point 110 °C
    Solubility Insoluble in water, soluble in organic solvents
    Odor Mild ester-like odor

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

    Packing & Storage
    Packing 250 mL amber glass bottle with secure screw cap, labeled "Diethyl Glutarate, 99%" along with hazard symbols and handling instructions.
    Shipping Diethyl Glutarate is shipped in tightly sealed containers to prevent leakage and contamination. It should be transported as a chemical in accordance with local, international, and safety regulations, avoiding extreme temperatures and sources of ignition. Appropriate hazard labels and documentation are required to ensure safe handling during shipping and delivery.
    Storage Diethyl Glutarate should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area, away from sources of ignition, heat, and incompatible substances such as strong oxidizers and acids. Protect it from moisture and direct sunlight. Ensure that storage areas have suitable spill containment and appropriate chemical labeling according to safety regulations.
    Application of Diethyl Glutarate

    Applications of Diethyl Glutarate in Industrial Manufacturing

    As a direct manufacturer of Diethyl Glutarate, we serve specialized industrial sectors requiring high purity, reliable supply, and consistent batch quality for advanced downstream synthesis and formulation. The following sections detail key application areas, covering process integration, compliance, and resultant end products.

    1. Agrochemical Intermediates Synthesis

    Agrochemical manufacturers utilize Diethyl Glutarate as a structural building block in synthesizing selective herbicide and pesticide actives, especially where glutaric acid derivatives enable functional group modifications. This compound enters the process during heterocycle construction and ester linkage modifications, supporting targeted molecule development for enhanced plant protection agents. Reliable performance depends on accurate dosage and monitored reaction parameters, ensuring high-yield downstream conversion and meeting purity specifications critical to registration and regulatory approval.

    Industry compliance standards

    • OECD Guidelines for the Testing of Chemicals
    • REACH (EU) Regulation 1907/2006
    • ISO 9001:2015 Quality Management for chemical intermediates
    • FAO/WHO specifications for pesticide actives

    Typical usage ratio

    • 10–28% w/w basis of batch, adjusted according to target molecule and reaction pathway

    Downstream process integration

    • Added to reaction flask during primary esterification or amidation stage
    • Followed by solvent removal and crystallization or distillation steps for product isolation
    • Integrated within closed reactors to ensure atmospheric control and purity retention

    Final product types

    • Selective herbicide technical concentrates
    • Registered insecticidal intermediates
    • Fungicide precursor compounds
    • Plant growth regulator base compounds

    2. Pharmaceutical API Intermediate Manufacturing

    Pharmaceutical companies rely on Diethyl Glutarate in the multi-step synthesis of specific API intermediates, particularly where aliphatic chain elongation or cyclic structure introduction is essential. This application demands strict analytical monitoring, validated process controls, and complete batch traceability. The raw material delivers repeatable reactivity in ester hydrolysis, reductive amination, and lactam formation steps central to the production of key APIs used in neurology and oncology.

    Industry compliance standards

    • ICH Q7 GMP for Active Pharmaceutical Ingredients
    • Ph. Eur. general quality standards
    • 21 CFR Part 211 (FDA cGMP for finished pharmaceuticals)
    • DMF (Drug Master File) documentation support

    Typical usage ratio

    • 5–16% molar ratio per synthetic route step, determined by process yield optimization and impurity profile management

    Downstream process integration

    • Introduced post-protection or deprotection stage in multistep synthesis
    • Participates in cyclization or chain-extension operations by in-situ addition
    • Subject to continuous process verification and in-line analytical QC

    Final product types

    • Anti-epileptic API intermediates
    • Anti-cancer drug precursor molecules
    • Pyrrolidone-based synthetic units
    • Specialty bulk intermediates for contract pharma

    3. Polyester Polyol Resins for Coatings

    Diethyl Glutarate finds application as a reactive monomer for modification of polyester polyol resins, enabling precise control over flexibility, hardness, and hydrophobicity in advanced industrial coatings. Downstream resin manufacturers introduce the raw material in controlled stoichiometry to form tailored prepolymer backbones, optimizing film properties for metal protection and automotive finishes. Consistency in reaction and impurity management supports regulatory compliance for high-performance surface coatings distributed internationally.

    Industry compliance standards

    • ISO 12944 Paints and Varnishes — Corrosion Protection of Steel Structures
    • EU RoHS (Restriction of Hazardous Substances)
    • REACH Annex XVII for restricted substances in coatings
    • ASTM D16 Standard Terminology for Paint, Related Coatings, and Materials

    Typical usage ratio

    • 4–12% of total polyol and acid feedstock mix, adjusted based on target Tg and solvent compatibility of final resin

    Downstream process integration

    • Charged to reactor during polycondensation, prior to catalyst addition
    • Participates in esterification and chain-lengthening, influencing final resin characteristics
    • Removes volatile by-products via vacuum stripping post-reaction

    Final product types

    • Automotive refinish coating polyesters
    • General industrial maintenance coatings
    • Protective marine and heavy duty anticorrosion primers
    • High-gloss architectural powder coatings

    4. Specialty Plasticizer Production

    Manufacturers employ Diethyl Glutarate as a plasticizer precursor to impart flexibility, reduced migration, and improved low temperature properties in PVC formulations. It integrates at the compounding stage, linking with other ester plasticizers to balance mechanical strength and processability, especially for applications in wire insulation, automotive interiors, and medical device tube production. Proper dosing and blending are vital to achieve targeted migration resistance and regulatory compliance on phthalate content.

    Industry compliance standards

    • EN 71-3 Safety of Toys (migration of certain elements in plastics)
    • REACH Regulation regarding phthalates and non-phthalate plasticizers
    • FDA 21 CFR 177.2600 for polymers in food contact applications
    • UL 94 standards for plastic flammability rating where applicable

    Typical usage ratio

    • 8–22% by weight of compound, fine-tuned per flexibility requirement and compliance with phthalate substitute thresholds

    Downstream process integration

    • Directly added during PVC paste or resin blending
    • Homogenized under heat and shear, followed by extrusion or calendering as process demands
    • Careful quality monitoring to meet batch-to-batch migration standards

    Final product types

    • Flexible PVC wiring insulation sheaths
    • Automotive dashboard films
    • Medical device tubing (non-phthalate based)
    • Low-temperature flooring tiles

    5. Solvent Component in Electronic Cleaning Agents

    In electronics manufacturing, formulators incorporate Diethyl Glutarate as a medium volatility solvent component in specialty cleaning agents, especially for process degreasing and flux residue removal from delicate circuit assemblies. It contributes to precise surface wetting properties and residue minimization, critical for maintaining connectivity and preventing surface ion migration. Stringent process and emission controls govern its use, particularly in high-purity environments where solvent cross-contamination is unacceptable.

    Industry compliance standards

    • IPC-CH-65B Guidelines for Cleaning of Printed Boards and Assemblies
    • RoHS Directive 2011/65/EU for electronics chemicals
    • ISO 14001 Environmental Management for solvent handling
    • National Emission Standards for Hazardous Air Pollutants (NESHAP), US EPA

    Typical usage ratio

    • 12–40% in solvent blend, calibrated to application method (immersion, vapour phase, ultrasonic cleaning) and compatibility with electronic subassemblies

    Downstream process integration

    • Used during post-soldering or component assembly wash cycles
    • Recirculated in closed-loop vapor degreasing equipment or immersion baths
    • Recovered and purified for reuse or disposal per environmental guidelines

    Final product types

    • Printed circuit board cleaning solutions
    • Precision microelectronic assembly solvents
    • Semiconductor wafer preparation agents
    • Final assembly anti-static and residue-free wipes

    6. Monomer Precursor in Biodegradable Polymer Synthesis

    Manufacturers engaged in specialty polymer synthesis utilize Diethyl Glutarate as a monomer precursor for developing biodegradable polyesters, especially those derived from aliphatic dicarboxylate esters. It enters the main polymerization as a dialkyl dicarboxylate, reacted with aliphatic diols under controlled temperature and vacuum to ensure high molecular weight, hydrolysis-resistance, and targeted degradation rates. Compliance with international biodegradability standards and food contact safety governs both formulation and downstream process control for these sustainable plastics.

    Industry compliance standards

    • EN 13432:2000 Packaging — Requirements for Compostable and Biodegradable Plastics
    • ASTM D6400 Standard for Compostable Plastics
    • EU No 10/2011 Regulation for plastics in contact with food
    • ISO 9001:2015 for quality management in polymerization control

    Typical usage ratio

    • 15–35% molar ratio with copolymerizing diols, tuned according to target mechanical and degradation profiles of polymer

    Downstream process integration

    • Charged as a main feedstock to batch or continuous polymerization reactors
    • Integrated at the initial esterification and followed by polycondensation stages
    • Subject to moisture removal, devolatilization, and molecular weight monitoring inline

    Final product types

    • Compostable packaging films and bags
    • Single-use food trays and capsules
    • Agricultural mulch films
    • Biodegradable consumer goods casings
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    Certification & Compliance
    More Introduction

    Understanding Diethyl Glutarate: Direct Insights from the Manufacturer

    Our Perspective on Diethyl Glutarate

    At our plant, the reality of manufacturing Diethyl Glutarate settles in long before a bottle hits a laboratory bench or a tanker rolls out the gate. We see the material in its raw formation, as a clear, colorless liquid with a mild, pleasant scent that means our esterification batch finished just as it should. Every time we test a drum, we measure not only purity but our continued capability as direct chemical manufacturers. We don’t just supply Diethyl Glutarate — we oversee its creation down to each step, from the choice of raw glutaric acid to the final polishing distillation.

    Diethyl Glutarate, often recognized for its molecular formula C9H16O4 and CAS number 701-62-6, earns its place in both industrial and research settings through its versatile chemical profile. In our facility, we keep strict controls on water content and acid value, because even slight deviations affect performance in next-step syntheses or solvent applications. The differences in purity levels make a big difference between a reliable process and a frustration-filled lab session. We listen to end-users and tighten controls based on what chemists actually encounter, not just what specs sheets say.

    The Chemistry Behind Our Process

    We manufacture Diethyl Glutarate through an esterification reaction, using glutaric acid and ethanol with a solid-acid catalyst. Each batch sees our team making micro-adjustments to temperature, reflux time, and crude separation to steer the reaction away from unwanted byproducts like diethyl succinate or monoester fractions. Precise distillation at the end gives us the high-purity grade that drives reliable research outcomes.

    Our production line runs under closed systems, reducing atmospheric contamination and minimizing byproduct formation. We keep an eye out for color shifts, unusual odors, or changes in miscibility, which signal issues we’d rather catch at the source than hear about later from an unhappy customer.

    Why Consistency in Diethyl Glutarate Matters

    Every time a process engineer or synthetic chemist uncaps a fresh container, they place trust in our controls. Many users rely on Diethyl Glutarate as an intermediate for APIs, specialty solvents, or plasticizers. In pharmaceuticals, for example, even low levels of acidic or basic impurities can throw off downstream reactions or affect the crystallization step.

    Cheaper products cut corners, especially on drying or final purification. We understand why some buyers shop based on price alone, but we see what happens when diethyl glutarate batches arrive darker than expected or carry a persistent odor outside normal ester range. Our experience tells us that so-called “technical-grade” esters quickly expose their limitations in critical applications, whether in medicinal chemistry or materials science.

    Common Applications and What Our Experience Tells Us

    Nearly every batch of Diethyl Glutarate we produce goes into some form of synthesis, either for pharmaceutical building blocks, solvents in fine chemical work, or plasticizer agents for specialty polymers. The molecule’s two ethyl groups and five-carbon glutarate body make it more flexible and less volatile than lower esters. That flexibility shows up in reaction compatibility: we see customers use it as an intermediate where dimethyl, di-n-butyl, or diisopropyl analogs run into problems with volatility, solubility, or reactivity.

    A major part of our supply heads into ester exchange reactions, where the predictable reactivity of the glutarate backbone and the low water content allow consistent transesterification without surprises. We find that some customers value the middle-ground volatility of Diethyl Glutarate — high enough to allow simple removal by evaporation, but not so high as to risk escape during distillation or solvent recovery. That’s a balance not often found in either diethyl succinate or adipate cousins.

    Years watching usage data and post-sales feedback make clear that repeat buyers value a chemically clean profile above all. The lack of aldehydic tinge and low acid residue mean fewer purification steps downstream. While we could sell a dirtier product at a lower price, we’ve found long-term partnerships sustain when we maintain these thresholds without excuses.

    The Role of High-Purity and Standard-Grade Material

    In our world, grades matter. Research-grade Diethyl Glutarate moves mainly to academic or pharmaceutical labs, where even trace impurities threaten reaction predictability. High-purity materials come from extended fractionation, and sometimes further drying based on real-time Karl Fischer titrations. Not every buyer requires this, so we maintain standard technical grade as well, mainly for industrial operations where a little more water won’t ruin an entire batch.

    Direct feedback from customers has pushed us to tighten grades over the years. Chemists working on new solvent systems for biodegradable plastics, for instance, need confidence that minor ingredient drift won’t distort the final mechanical properties. When one client ramped up from bench-top polymer work to pilot scale, our stable glasstransition results reassured them enough to standardize on our Diethyl Glutarate. Feedback like this keeps us from ever relaxing controls or outsourcing quality.

    Why We Don’t Overlook Performance in Specialty Solvents

    Team discussions revisit solvent applications often. We’ve observed Diethyl Glutarate used as a carrier solvent for flavors, fragrances, and some modern pesticide formulations. Here, its gentle odor, low toxicity, and good solvating power bring advantages over shorter-chain dialkyl glutarates that tend to flash off quickly or bring too strong a residue.

    Safety data matters, but we also field questions about long-term stability in sealed formulations. Our experience tells us that keeping hydrolytic stability high and minimizing peroxides at shipment remain the deciding factor for these users. Each time we roll out a fresh tank or drum, we run extra tests for residual ethanol and acid number, because even trace instability leads to complaints down the line.

    Model, Specifications, and Product Packaging from the Source

    In our packaging hall, Diethyl Glutarate leaves the line in everything from 200-liter steel drums to smaller HDPE containers, depending on user requirements. We produce lot numbers tied directly to production dates and QA results — there is no rebranding or mixing lots to cover up variability. Typical purity for standard grade exceeds 99 percent by GC, with water usually below 0.1 percent. Acid values stay low, as high values can trigger downstream ester cleavage or acid-catalyzed side reactions.

    We keep heavy metals well under regulated thresholds, not just by tweaking distillation, but by paying attention to every valve, gasket, and transfer line. Technicians monitor containers for cross-contamination rigorously — a lesson learned from years of dealing with small but costly incidents. Package integrity gets close scrutiny, since esters like these react with moisture and oxygen, changing the material faster than most realize.

    How Diethyl Glutarate Stands Apart from Other Esters

    Real differences show up only if you’ve handled pounds and tons of dialkyl esters. Diethyl Glutarate’s slightly higher molecular weight and longer carbon backbone deliver less volatility than dimethyl glutarate, and greater compatibility with oil-based systems than the methyl cousin. We’ve tested side-by-side in labs and production lines; in many cases, only Diethyl Glutarate keeps a reaction running cool and under control, thanks to its moderate boiling and slow hydrolysis rate.

    Some users switch to our product after running into purity or odor issues with di-n-butyl or diisopropyl analogues. Odd off-notes, haze, and unexpected residues in their finished goods quickly vanish once they adopt a tighter-controlled, high-purity product. We’ve helped several customers transition away from mixed-ester products that introduce variability batch-to-batch.

    Functionally, Diethyl Glutarate slots into processes where mid-range solvency and gentle reactivity matter. In polyol and polyester syntheses, it brings enough flexibility without risking byproduct formation common with higher boiling esters. Paint labs tell us the moderate evaporation rate of Diethyl Glutarate helps avoid defects like blushing and pinholing, giving coatings more working time but not dragging out curing.

    Common Hurdles and Lessons from the Production Floor

    As manufacturers, we’ve run into the kind of technical hiccups that don’t show up in data sheets. Water control stands out as the number-one issue. Our team puts extra effort into vacuum drying and prompt container closure because even trace moisture initiates hydrolysis and drops product quality fast. A batch once left unsealed for a shift lost its spec value overnight — a lesson everyone still remembers.

    Odor checks form part of our QC, not just purity and acid value. Strong odors often signal underlying issues, so we use odor as an immediate proxy for larger contamination problems. Process upsets, such as incomplete esterification or low catalyst activity, show up early in these physical signals. We prefer catching them in-house, not on a customer’s line.

    Shipping temperature also matters more than most sources admit. Diethyl Glutarate remains stable under reasonable warehouse conditions, but excessive heat during transit accelerates aging and off-odor development. That’s why we focus attention on insulation and prompt shipment, rather than waiting for customer complaints to point out storage lapses.

    Supporting R&D and Scale-Up: What We Hear from Customers

    Many in research and development come to us direct, hoping to move from grams to kilograms without surprises. Our experience with pilot batches tells us: you want the same composition at five-liter and five-hundred-liter scale, with no unexplained color or odor changes. Academic and commercial labs both report fewer failed reactions and do-overs when switching to our Diethyl Glutarate – not because our specs differ on paper, but because our processes stick to them in practice.

    We’ve seen R&D shops stuck with inconsistent ester suppliers, switching between traders and discovering each shipment brings a new boil point or water content. Every time a new supplier cuts corners, someone calls us with tales of failed scale-ups. In response, we focus on rigorous traceability and hands-on sample retention — every lot can be cross-checked back to a production run and its QC measures.

    Improvements and Sustainability in Manufacturing

    Manufacturing doesn’t stop with the finished drum. We’re working to increase feedstock traceability, reduce energy input during esterification, and implement closed-loop recycling of solvents and wash waters. Diethyl Glutarate’s relatively clean synthesis pathway — no halogen intermediates, no heavy-metal catalysts — helps, but waste minimization still requires vigilance.

    Years in the business taught us not to chase lowest-cost production if it means dirtier emissions or more off-spec batches. Cleaning up after a bad batch costs more than any savings on raw material or processing short-cuts. We keep our wastewater below regulated COD and BOD limits, monitor reaction offgases, and recover heat wherever possible.

    Long-term relationships with both upstream suppliers and downstream users depend on showing this commitment. We use life-cycle data to evaluate changes in process – if a cheaper raw material brings only short-run savings but upsets discharge or downstream quality, we scrap it. Customers appreciate honesty and stability, not shifting grades or unexplained tweaks that undermine their own processes.

    Handling, Storage, and Safe Usage — Practical Advice from Experience

    Real-world handling means preparing for what happens outside of the spec sheet. We advise all customers to keep Diethyl Glutarate away from open air and moisture, and to use nitrogen-blanketed storage tanks for bulk quantities. Small-scale labs vent bottles frequently; we recommend minimizing open time and using airtight seals because the material picks up water rapidly.

    On factory floors, we see occasional slips in PPE or ventilation. While Diethyl Glutarate carries a relatively safe profile, regular training and focus on splash control helps prevent accidents. Our own operators work in low-exposure areas, using face shields and gloves, not because regulations demand it but because lessons from past incidents demanded it.

    Spills release a characteristic ester odor; immediate cleanup with absorbents prevents slip hazards and stops slow hydrolysis of the product on floors and loading docks. We share lessons like these directly with buyers, along with updated handling protocols based on our own in-house safety record.

    Pushing for Clarity and Transparency in the Industry

    As manufacturers, we see the difference that clear, honest communication makes. Customers want to know how their material gets made, who stands by it, and what controls are in place. We remain open to facility audits, lot reviews, and third-party testing, because hiding behind certificates only lasts until the first problem shipment.

    Over the years, we’ve seen competitors come and go, many trading only on price or opacity. Our approach trades on direct conversations with users, site visits, and traceable production protocols. If a batch misses the mark, we don’t pass blame – we look back through operations and find the root, reporting candidly on issues and fixes.

    The Future of Diethyl Glutarate Production: Our Commitment

    Each season brings new process tweaks, raw material shifts, and end-user demands. Through it all, our goal stays rooted in producing Diethyl Glutarate at a standard users can count on. Chemists and engineers stake their next innovations on clean, reliable intermediates; our job as manufacturers remains steady: keep supply honest, keep quality up, and keep learning from what every new batch shows us about the chemistry — and the people — involved.