| Names | |
|---|---|
| Preferred IUPAC name | Diethyl carbonate |
| Other names | Decarbit Carbonic acid diethyl ester |
| Pronunciation | /daɪˈɛθ.ɪl ˈkɑː.bə.neɪt/ |
| Identifiers | |
| CAS Number | 105-58-8 |
| Beilstein Reference | 2038735 |
| ChEBI | CHEBI:17713 |
| ChEMBL | CHEMBL57240 |
| ChemSpider | 5349 |
| DrugBank | DB14004 |
| ECHA InfoCard | ECHA InfoCard: 100.003.874 |
| EC Number | 203-542-8 |
| Gmelin Reference | Gmelin Reference: 83367 |
| KEGG | C01501 |
| MeSH | D002938 |
| PubChem CID | 7995 |
| RTECS number | FG0450000 |
| UNII | 7O3S4W1KE6 |
| UN number | 1118 |
| Properties | |
| Chemical formula | C5H10O3 |
| Molar mass | 118.13 g/mol |
| Appearance | Colorless liquid |
| Odor | Pleasant odor |
| Density | 0.975 g/cm³ |
| Solubility in water | soluble |
| log P | 0.95 |
| Vapor pressure | 3.7 mmHg (20 °C) |
| Acidity (pKa) | pKa ≈ 10.8 |
| Basicity (pKb) | pKb = 16.3 |
| Magnetic susceptibility (χ) | -47.5×10⁻⁶ cm³/mol |
| Refractive index (nD) | 1.406 |
| Viscosity | 1.969 mPa·s (25 °C) |
| Dipole moment | 4.91 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 248.1 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -674.1 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | -2702.4 kJ/mol |
| Hazards | |
| GHS labelling | GHS02, GHS07 |
| Pictograms | GHS02,GHS07 |
| Signal word | Warning |
| Hazard statements | H226, H319 |
| Precautionary statements | P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378 |
| NFPA 704 (fire diamond) | NFPA 704: 2-2-1 |
| Flash point | 26 °C |
| Autoignition temperature | *180 °C (356 °F; 453 K)* |
| Explosive limits | 3.1–13.8% |
| Lethal dose or concentration | LD50 (oral, rat): 12,130 mg/kg |
| LD50 (median dose) | LD50 (median dose) Oral rat: 4,994 mg/kg |
| NIOSH | NIOSH=FG1925000 |
| PEL (Permissible) | PEL: Not established |
| REL (Recommended) | 50 ppm |
| IDLH (Immediate danger) | Unknown |
| Related compounds | |
| Related compounds | Dimethyl carbonate Dipropyl carbonate Ethylene carbonate Propylene carbonate Triethyl phosphate |
| Property | Description and Manufacturer Commentary |
|---|---|
| Product Name | Diethyl carbonate |
| IUPAC Name | Ethyl carbonate |
| Chemical Formula | C5H10O3 |
| CAS Number | 105-58-8 |
| Synonyms & Trade Names | DEC, diethyl ester of carbonic acid, ethyl carbonate |
| HS Code & Customs Classification | 2917.19 (Carbonic acid esters and their derivatives, not elsewhere specified) |
Accurate identification is standard procedure from raw material intake through shipment release. Diethyl carbonate carries a unique CAS number that eliminates confusion with other carbonates, supporting both regulatory compliance and traceability in audit scenarios. Our technical and quality teams maintain up-to-date reference materials based on batch origin and end-user market so documentation aligns with regional customs requirements. The HS code may vary by importing country, primarily governed by WCO nomenclature and interpreted differently in some customs regimes; variances exist within the "carbonic acid esters" category, so customs brokerage review is recommended when there is uncertainty regarding end-use or import destination.
Diethyl carbonate enters supply contracts under various synonyms, though labeling remains unified where regulatory clarity is necessary. Batch records and quality release certificates always align with internationally recognized naming to facilitate customs clearance and avoid delays in downstream supply chains. Trade names are documented for each major customer base but harmonized in our master product index with reference to the IUPAC designation for regulatory reporting.
Process engineers and analyst teams regularly verify the molecular formula through GC or NMR testing as part of batch release, particularly for applications where grade purity influences downstream formulation—examples include use as electrolyte solvents in lithium battery manufacturing. The presence or absence of specific functional groups, and the exact match to C5H10O3, guides both release and rejection decisions prior to packaging. Any observed deviation, attributed to incomplete reaction or by-product carryover, prompts batch reprocessing or downgrading to technical material for less sensitive use cases.
Export documentation always reflects the latest harmonized tariff schedules, but periodic changes in regulatory interpretation force us to review code descriptions with each logistics cycle. Warehouse and shipping teams receive coded labels for compliance—which can affect tariffs, required certificates, and pre-import customer notification. Incorrect HS coding frequently leads to shipment holds at customs, impacting delivery timelines, specifically for shipments crossing into regions with nonstandard interpretation of "carbonic acid esters." For contract manufacturing, HS code affirmations are usually incorporated as an appendix in the technical supply agreement.
At manufacturing scale, diethyl carbonate typically presents as a clear, colorless liquid. Odor resembles that of esters, with a faint fruity note. Melting point and boiling point vary according to purity, water presence, and sampling technique, so production and QC teams consult batch-specific data. Process streams are monitored for signs of discoloration, particulate content, and haze, since these indicate process upsets or contamination. Color quality can depend on the route, such as direct synthesis versus transesterification, so ongoing comparison against internal color standards is routine.
Density measurements are essential for batch release and solvent blending. Operators measure actual values at specified temperatures per grade requirements. Density deviations often trace back to water pickup, residual alcohol content, or improper material handling.
Reactivity profiles reflect the chemical synthesis route, impurity profile, and storage condition history. Under dry, controlled storage, diethyl carbonate remains chemically stable, but contact with strong acids, bases, or moisture initiates hydrolysis and decomposition. Careful process control reduces risk of unwanted degradation during bulk storage and transfer. Product stability is confirmed by periodic analysis and ongoing impurity tracking.
Solubility behavior varies with water content, co-solvent selection, and grade. Commercial grades dissolve many organic compounds and some salts, but strict water exclusion is needed, especially for electrolyte and fine chemical applications. The quality control team verifies solubility and solution behavior during grade qualification. Trace water content strongly affects product performance, so rigorous Karl Fischer moisture testing is standard.
Exact specification limits depend on customer requirements and end-use sector. Internal tables classify batches by water content, color, density, acidity, alcohol residue, and key organic/metallic impurities. Each release batch is certified to detailed internal standards; customer grades may add additional metals, particulates, or odor criteria depending on downstream process sensitivity.
Primary concern in industrial practice centers around residual ethanol, methanol, water, and acid content, along with possible process-specific byproducts like ethyl chloroformate or dialkyl carbonates. Impurity limits follow product grade—battery electrolytes demand extremely low moisture and metal content, while coatings grades allow broader impurity windows. Source materials and manufacturing route contribute to trace organics and organohalides.
Specification monitoring employs GC, Karl Fischer titration, and ICP-OES as standard techniques. Process- and quality-control labs document standard deviation and method suitability for each lot and grade. Final release is based on averaged results and process control history, not just point analysis.
Raw substrates include ethanol or ethyl halide and alkali carbonate, with route selection informed by raw material cost, availability, and purity. Many plants preferentially source high-purity feedstocks to minimize off-grade formation, reduce byproduct load, and comply with REACH, TSCA, and local regulations. Contaminant control at the raw material stage significantly impacts batch yield and downstream purification.
Major routes include transesterification of ethyl alcohol with phosgene, or direct reaction of sodium ethylate with carbon dioxide. Choice reflects local regulations, environmental impact, and safety infrastructure. Process monitoring focuses on real-time reaction conversion, selectivity, heat management, and removal of byproduct salts, water, or residual chlorine species.
Tight process control ensures desirable selectivity and product consistency. In-line sensors track temperature, pressure, and conversion endpoints. Purification strategies include vacuum distillation, fractional separation, and drying over desiccants to achieve application-specific water and residual alcohol content.
Each batch requires comprehensive release testing tracked within batch records. Because downstream applications are sensitive to moisture, trace metals, and volatile acidity, QC teams issue release only when all core parameters and customer specifications are met. Internal specification is grade- and use-specific, increasing scrutiny for high-purity and battery grades.
Diethyl carbonate engages readily in transesterification, nucleophilic substitution, and carbonation reactions. It acts as a carbonylating agent in organic synthesis. Internal R&D and customer projects often focus on optimizing reaction parameters to maximize desired derivative yield.
Most transformations require suitable base or acid catalysts and controlled temperature regimes. Solvent selection depends on downstream requirements and desired product isolation. For industrial scale synthesis of polycarbonates or ethylation processes, catalyst residue and byproduct minimization are closely managed to ensure overall reaction efficiency.
Standard commercial derivatives include dialkyl carbonates, alkyl carbonates, and polycarbonate monomers. Battery electrolyte sites control final water, hydrolyzable chloride, and color as these directly influence end-product stability and device performance.
Bulk diethyl carbonate performs best in airtight, dry, and light-protected storage. Manufacturing and packaging operations maintain controlled environments to prevent moisture and acid ingress. In many regions, nitrogen blanketing is used to protect sensitive grades. Temperature control reduces risks of premature degradation and boiling.
Manufacturers select stainless steel, PTFE-lined vessels, or HDPE drums for compatibility. Selection depends on batch size, transportation mode, and grade sensitivity. Container testing addresses extractables, leachables, and corrosion under typical storage periods.
Shelf life is grade- and storage-dependent but is primarily limited by moisture and acidity uptake. Periodic retesting and recertification protocols check for haze, discoloration, and increases in water or volatile acidity. Downgrade or off-spec actions follow detection of degradation signs.
GHS classifies diethyl carbonate as a flammable liquid and vapor, with hazard statements related to fire and health effects. Classification details remain dependent on local regulatory updates and purity grade.
Industrial environments prioritize fire prevention, ventilation, and avoidance of ignition sources. Standard handling involves engineering controls and PPE tailored to airborne vapor, skin, and eye contact risk. Written procedures align with the latest local, national, and international standards.
Available animal test data indicate low to moderate acute toxicity by oral and inhalation routes. Chronic exposure effects depend on cumulative dose and frequency; laboratories monitor workplace air and direct exposure regularly. Manufacturing teams maintain incident and exposure logs as part of ongoing risk management.
Published occupational exposure limits vary by country and grade. Manufacturing and QC staff follow lowest published thresholds for airborne concentrations, with periodic personal exposure monitoring. Plant procedures cover emergency spill response, fire suppression, and first-aid in case of inhalation or dermal exposure.
Our diethyl carbonate production bases run with batch and continuous processes, balancing between technical consistency and logistical efficiency. Onsite production is regularly matched to order signals and maintenance intervals, so sudden spikes can stretch planning, but volume commitments are anchored to contracted partners. Technical grade and electronic grade variants pull from separated process trains, and annual capacity allocation reflects downstream automotive, electronics, and battery-grade requirements, with actual delivered tons tracking closely with firm order forecasts. Unexpected maintenance, supply interruptions to base alcohols or phosgene, or compliance-driven changeovers create occasional tightness. Buffer inventory is held for repeat contract buyers; for spot export, lead times hinge on current backlog and packaging queue.
Typical lead time for regular grades averages several working weeks, but rapid fulfillment for tote or drum packaging moves faster from regional storage. For specialty lots or export bulk, slotting into campaign production is required. MOQ sets depend directly on grade, with higher purities requiring larger campaign minimums to secure equipment turnaround yield and control cross-contamination risk. Lower MOQ applies for standard industrial grade shipments.
Diethyl carbonate leaves the plant in ISO tanks, IBCs, or steel drums, with grade, purity, and end-use driving packaging selection. Bulk tanker is common for continuous downstream uses; smaller containers address laboratory, formulation, or R&D needs. Traceable batch IDs and multilayer closure indicators support chain-of-custody and handling compliance, especially when shipping for pharmaceutical or battery sectors.
Shipping is CFR or FOB core ports for bulk, with EXW and FCA possible on small-lot orders. Comprehensive documentation—COA, SDS, and transport papers—accompany each shipment. For buyers in regulated sectors, traceability documents, and origin statements can be provided. Payment terms are negotiated based on historical relationship, annual offtake, and credit risk assessment; L/C, wire, and net payment arrangements are typical.
Core feedstocks for diethyl carbonate include ethanol, phosgene or ethylene carbonate, and processing agents. Increases in ethanol price propagate directly into production cost, with ethanol purity or alternative renewable sourcing introducing secondary variability. Regulatory shifts around phosgene handling or substitution pressure from greener routes play into cost structure for specialty grades.
Raw material volatility is driven by agri-feedstock harvests and petrochemical cycles for ethanol and associated intermediates. Regional force majeures, plant outages, and logistics restrictions (hazardous transport, port slowdowns) can see spot surcharges—especially across Q3-Q4 cyclical swings when plant maintenance aligns with regulatory audits. Grade-specific fluctuation often stems from impurity removal complexity and controlled substance precursor management.
Price bands strictly reflect grade, with electronic and pharmaceutical grades commanding surcharges for higher specification control, stricter impurity limits, and more traceable batch processing. Packaging certification drives additional lift, seen in UN-approved, tamper-proof, or nitrogen-purged containers. Orders needing full regulatory documentation—kosher, halal, REACH, or export declarations—bear incremental administrative cost.
Grade, purity, and certification source most of the price tiering. Electronic and battery electrolyte grades demand sub-ppm impurity profile, pushing up process control and purification requirements. Industrial grades with relaxed purity see a flatter price curve, but pricing for specialty batches reflects both smaller campaign efficiency and stricter isolation protocols. Larger volume and non-certified packaging options temper the unit price, while multi-layer, track-and-trace solutions increase it.
Demand for diethyl carbonate branches from solvents, lithium battery electrolytes, and organic synthesis applications. China holds much of the installed capacity, especially for battery supply chains and specialty process routes, while EU and US capacity leans toward specialty chemicals and eco-certified supply. Key regional shortages align with regulatory clampdowns or shifts in downstream battery technology.
| Region | Factors Impacting Supply & Price |
|---|---|
| US | Feedstock ethanol trends, energy cost pass-through, environmental permit turnaround time, and battery manufacturing resurgence. |
| EU | REACH-compliance overhead, tight regulations on phosgene/in-situ processes, and demand from automaker supply contracts. |
| JP | High-purity demand for electronics, close integration between chemical and battery OEMs, process route preference toward low-residue grades. |
| IN | Growing but fragmented demand, waterborne regulation influence on process selection, imported feedstock price swings. |
| CN | Major battery-grade production clusters, export-oriented plant builds, evolving provincial chemical zoning rules impacting new permits. |
By 2026, supply chain bifurcation persists, led by high-purity, rechargeable battery growth in Asia and higher process certification costs in the EU and US. Feedstock tightening (ethanol, ethylene carbonate), trade barriers, and decarbonization overhead could see specialty grade prices rise, yet expanded Chinese capacity and process intensification temper average industrial grade price escalation. Market stabilization will likely occur as new downstream plants reach steady production rates and as battery technology clarifies electrolyte demand.
Market forecasts synthesize internal sales data, public customs records, published battery production figures, and peer manufacturer disclosures. Direct customer demand planning and regulatory calendar tracking supplement aggregated trade intelligence. Entry of new chemical routes (non-phosgene, renewable carbonates) tracked via patent registrations and startup activity reports.
Asia’s battery industry ramp-up drives spot demand and longer-term offtake contracts for battery-grade diethyl carbonate. Investment in digital batch traceability and automated impurity detection is trending upward for suppliers tied to electronics and automotive OEMs. Meanwhile, European buyers respond to shifting battery recycling rules and local content thresholds by re-evaluating strategic sourcing.
Phosgene process plants face increasing safety audits and licensing scrutiny. New environmental caps around VOC emissions are altering process equipment upgrade timelines. REACH and TSCA registration criteria for new downstream uses push higher documentation workload and batch testing frequency. Kosher/halal certification demand is up for markets integrating with food/pharma product flows.
To manage compliance risk and volatility, recent investments focus on distributed buffer storage, modular production skids, and digital release traceability. Strategic partnerships with ethanol and carbonate suppliers are central to reducing process swings. Emergency response protocols and compliance support teams now integrate regular training updates on international shipping restrictions and document chain requirements.
Diethyl carbonate covers a range of end uses. The largest application lies in lithium battery electrolytes, where purity and moisture are critical. In pharmaceuticals, diethyl carbonate acts as a reagent and intermediate where specific impurity profiles influence regulatory acceptance. Paints, coatings, and specialty solvents rely on solvent grades where color, odor, and solvent strength must meet formulation requirements. Engineering plastics and polymers benefit from grades with reduced alkali metal content and limited residual alcohols, as reactivity and downstream stability depend heavily on these factors.
| Application | Preferred Grade | Critical Quality Considerations |
|---|---|---|
| Lithium Battery Electrolytes | Battery/Electronic Grade | Very low moisture, low total acid, trace metal control |
| Pharmaceutical Intermediates | Pharma/High Purity Grade | Impurity profile, residual solvents, alignment with pharmacopoeia |
| Paints/Coatings/Solvents | Industrial/Solvent Grade | Color, odor, ester content, overall purity |
| Engineering Plastics/Polymers | Technical Grade | Residual sodium/potassium, alcohols, process-related volatiles |
Moisture ranks as a top concern in battery electrolyte grades due to the moisture-sensitive nature of lithium salts and their impact on conductivity and product lifespan. Acid content and residual alcohols produce side reactions in sensitive syntheses, so high-purity and pharma grades control these tightly. In coatings, color and odor can affect appearance and end use, which are routinely addressed by feedstock selection and purification method.
Grade-dependent properties include total water (Karl Fischer method), acidity (as acetic acid by titration), and color index. Application sensitivity stems from differences in end use: batteries require sub-ppm moisture by in-line drying and packaging in sealed systems, whereas the pharma segment focuses on a broader range of organic impurities tied to precursor and process route. Coatings tolerate higher water content but become sensitive to color shifts due to minor by-products.
Identifying the main function guides grade selection. For electrolyte preparation, start with grades offered for electronic applications, as control over moisture, trace metals, and nonvolatile content becomes relevant. Synthetic chemistry and API manufacturing follow regulatory listings, so the grade must match expected impurity limits.
Some sectors, especially pharmaceuticals, require grade compliance with regional standards. Quality and impurity limits depend on monograph requirements or customer specifications. Understanding the legal and QA context influences whether standard, high-purity, or bespoke grades must be sourced.
Battery and pharma applications focus on purity at both the gross and trace levels. Impurities arise from raw materials, catalyst use, and reaction side products, all of which are controlled by in-process sampling and intermediate purification. Each grade matches a typical impurity profile, which means defining tolerance for water, methanol, ethyl alcohol, and acid.
Large-scale users may prioritize cost and logistics over extreme purity, choosing industrial or technical grades with agreed limits. Specialty applications, including high-end coatings and solid polymer electrolytes, may warrant the added investment in tighter controlled batches.
Performance and compatibility testing often represent the deciding factor. Samples at proposed specification and batch size allow users to validate suitability. The final release standard stems from both manufacturer’s internal criteria and performance in the end use, not from laboratory metrics alone.
Feedstock choice defines the impurity burden and process yield. Alcohol and carbonate sources contribute upstream metals and organics, which the manufacturing team grades for each production campaign.
Direct esterification and transesterification are common routes. Process selection weighs the batch size, target impurities, and downstream purification demands. Batch-wise control with real-time analytics results in tighter release profiles, especially for regulated or export clients.
Moisture, metal, and residual organic tracking at each stage governs downstream release. In-process measurements at dehydration, washing, and finishing points prevent deviation. Continuous improvement and batch record analysis guide whether a lot meets battery, pharma, or general industrial classification.
Not all grades proceed through the same purification—battery and pharma runs require additional drying, filtration, and possibly distillation. Final packaging into moisture-resistant drums safeguards against post-production water uptake. Finished lots ship only after batch-specific laboratory release, according to the required grade for contract customers and internal specifications for industrial clients.
Production of diethyl carbonate demands integrated quality oversight from raw material sourcing to final packaging. Our facilities follow quality management systems that reflect current best practices in the chemical industry. Operations are oriented toward continual compliance with local and international standards demanded by downstream users in battery electrolytes, pharmaceuticals, and specialty polymers. Our batch records, audit trails, and traceability documentation remain available for customer scrutiny, reflecting our focus on transparency and repeatable quality.
End-use dictates specification stringency. For electronics and pharmaceutical use, certification and release depend on compliance with customer-specific impurity profiles and trace metal limits. Typical certification packages include batch COAs, statements on compliance with regional chemical control laws (such as REACH registration where applicable), and certification of origin for regulatory purposes. Purity requirements, trace contaminant control, and release protocols change depending on grade—electronic, pharmaceutical, or industrial.
Technical dossiers detail raw material sources, flow diagrams for each synthesis route, control points for hazardous byproducts, and waste handling. Every batch receives full traceability documentation, analytical method validation statements, and test method references. We record all in-process deviations, corrective actions, and laboratory release data, enabling continuous review by both internal and external stakeholders. Detailed safety data sheets, transport documentation, and product stewardship declarations accompany each shipment per customer request.
Long-term customer planning requires a manufacturer to maintain both base-load production and surge capacity. To support regular volume commitments, our plant scheduling links incoming order forecasts directly to raw material purchasing and production planning—guarding against upstream volatility and reducing lead-time risks. For projects with variable demand, our framework supports adaptive supply strategies, including reserve production slots, rolling forecasts, and adjustable minimum order multiples.
Core output relies on feedstock availability, route consistency, and predictive maintenance of reaction and purification equipment. Variations in input material quality, commonly encountered in carbonate ester production, receive pre-screening in raw material lots. In practice, downtime mitigation and batch yield consistency involve pre-emptive equipment inspection cycles and real-time adjustment of reaction parameters. We oversee reservoir inventory buffers to absorb transient shock in logistics or supply chain disruptions.
Detailed technical evaluation of diethyl carbonate for new projects often starts with sample requests. We support this by matching sample grade and volume to the intended application, backed by full analytical documentation. Customers can coordinate directly with our technical support staff to clarify target specifications, end-use challenges, and any study endpoints. Typical lead time for sample dispatch varies with availability of the requested grade and pre-shipment analytical confirmation.
Cooperation modes hinge on customer requirement predictability, contractual visibility, and risk-sharing arrangements. Fixed-rate annual offtake agreements suit partners with steady demand and foster production stability. For projects with uncertain scaling paths, we negotiate stepped supply ramps, consignment options, and periodic price review windows—balancing risk between both parties. We give priority to clear technical communication and tailored supply logistics, proven to be essential when serving downstream users whose own operations are highly application-specific.
Current research for Diethyl Carbonate (DEC) focuses on reducing synthesis byproducts and enhancing selectivity during production. Feedstock choice, especially ethanol purity and dimethyl carbonate source, receives close attention since trace impurities and water content can affect overall yield, catalyst lifespan, and downstream coloration. In-house teams run continuous pilot-scale trials on new catalytic systems with the aim to cut residual alkali and intermediate aldehydes, which prove challenging to remove at the purification stage.
Expanding R&D efforts target battery-grade DEC. Here, reduction of residual water, halides, and ethyl carbamate stands as a principal quality requirement. Application in lithium battery electrolytes and specialty solvents drives demand for ultra-low impurity grades, so analytic method development accompanies each new production lot to ensure batch reproducibility.
DEC sees new adoption in non-aqueous electrolyte systems, particularly as a solvent for high-performance lithium-ion batteries. Additional growth comes from its use in specialty coatings and as a green reagent in transesterification processes. Increasing regulatory scrutiny around toxic intermediates in other carbonate options shifts some downstream users toward DEC, provided manufacturers can control for trace byproducts and guarantee process verification for low-toxicity grades.
Eliminating trace water and specific organics continues to pose challenges across DEC production lines. Humidity control in both raw material storage and reactor loading, along with targeted post-reaction solid-liquid separations, significantly affect the grade and final product utility. Quality control methods increasingly rely on headspace GC-MS and Karl Fischer titration to profile impurities that historically passed undetected in bulk trade grades.
Breakthroughs include improvements in continuous distillation column design for tighter fractionation and in-line purity verification with automated sampling. For battery-grade output, identification and removal of nitrogenous byproducts have become a focus, often requiring multistep purification rather than single-stage extractions.
Demand for DEC is set to rise, driven by requirements in battery manufacturing, specialty polymer production, and green chemistry transformation routes. Shifts in end-user specification, including ongoing migration to electric vehicles and renewable energy technologies, will call for higher-purity and process-tailored grades of DEC. Output volumes, particularly in Asia and Europe, continue to follow investment in automated purification and expanded analytical laboratories to handle upstream and downstream requirements for tighter impurity profiles.
Process changes will emphasize minimal-waste syntheses, non-phosgene routes, and real-time impurity management. Automated in-process controls and continuous quality monitoring over batch-based verification now shape investment decisions. Producers expect to reconfigure raw material contracts with a focus on closing water and alcohol purity gaps that have contributed to traditional batch variability.
Raw material traceability tracking from ethanol and carbonate suppliers to finished batch logs forms a growing compliance and customer audit requirement, especially for customers supplying the electronics and medical sectors.
Sustainability in DEC production involves solvent recycling, process water treatment, and capture of CO2 byproducts for re-use. Ongoing trials track catalyst recoverability and lifetime extension, as loss rates in alkaline or metal-catalyzed systems can impact both environmental and cost performance. Life cycle analysis, conducted in cooperation with downstream integrators, assesses the impact of switching from traditional carbonate solvents to DEC in various end-use scenarios.
Manufacturing teams support partner plants and customers by providing technical guidance on process compatibility, material transfer, and detailed impurity profiling. Application engineers advise on product grade selection with respect to electrochemical or synthetic specifications, as properties such as acidity, water content, and trace organics all interact with process parameters and downstream yield.
Support begins at pre-shipment analysis, extends through joint pilot line testing, and carries forward after delivery in the form of batch-specific adjustment recommendations. Customers in the battery space receive itemized batch control data, and process troubleshooting teams are available for real-time defect root-cause traceability if any batch property deviates from expected performance.
Cooperation with application labs enables rapid adjustment to changing customer demands, be that for tighter water content, specific solvent blend ratios, or adaptation to newly identified regulatory restrictions.
Each delivery batch carries fully traceable records with process lot identification, linked to specific in-process control points and intermediate test results. Any quality deviation triggers a production-side investigation, with lot recall or corrective action defined by in-house quality and customer input. Follow-up extends into on-site support if required by conversion or mixing plant operators.
All technical support staff maintain familiarity with both regulatory and product-specific handling requirements and can support customer compliance audits or quality reporting upon request. Release standards adapt to customer audits and feedback cycles, with the option to align to sector-specific certification requests where commercially viable.
Our factory engineers and operates every stage in the production of Diethyl Carbonate. The process runs from raw material selection to final rigorous analysis, allowing full command of product features required for industrial and commercial use. Each campaign of Diethyl Carbonate targets the specifications needed for applications in pharmaceuticals, intermediates, coatings, and specialty electrolytes, where consistency directly supports process reliability and downstream product quality.
Large-volume users in battery industries rely on Diethyl Carbonate for lithium-ion battery electrolytes, where purity and residue limits directly influence battery cycle life and safety characteristics. Paint and coatings manufacturers use our product for synthesis of polycarbonates, offering predictable reactivity and minimized off-color development. Chemical synthesis plants employ it as a carbonylating agent and solvent for high-purity requirements, with levels of chloride, aldehyde, and water content checked batch by batch.
Batch repeatability remains critical for scale manufacturing. Our on-site quality assurance lab tracks every production lot with GC, NMR, and water analysis, reporting trace levels on all major impurities. By maintaining close loop feedback between lab and synthesis area, adjustments to feedstock and process controls occur in real time, eliminating drift in core parameters and undesired lot-to-lot scatter. The entire output follows documented protocols aligned with customer-defined test plans for each sector.
Bulk shipments move direct from production into carefully controlled filling lines managed by operators experienced with moisture-sensitive materials. Standard drum, IBC, and tank options support both high-volume manufacturing and intermediate storage for supply-chain reliability. By owning both production and packaging assets on site, sudden changes in order volume, packaging format, or transit timeline can be addressed without needing to transfer material through intermediary facilities. This reduces the risk of contamination or demurrage, protecting the value and regulatory status of each consignment.
Our staff engages directly with downstream process teams to troubleshoot application-specific concerns. Common issues such as solvent compatibility, reactivity differences, or long-term storage questions can be traced to root causes from the production floor, not just documentation reviews. We maintain records of each manufacturing run, enabling full traceability and targeted technical response to every client inquiry. Our technical team has firsthand knowledge of the synthesis methods, material handling systems, and purification steps, so guidance is always grounded in plant-level expertise.
Direct production and in-house packaging cut the lead time between order and delivery, supporting just-in-time inventory planning and large-scale production changes. By controlling every process parameter and supply handoff, our facility ensures traceable, specification-driven supply for regulatory, audit, and safety-sensitive environments. Procurement teams gain confidence from clear records, technical documentation based on real operational data, and logistics adapted to changing demand cycles—without opacity around product origin or risk of quality drift due to multiple resellers. Manufacturers and distributors equipped with this level of transparency and response from their Diethyl Carbonate partner keep production more predictable and product launches on schedule.
Every year, lithium-ion battery research pushes requirements on solvents further. As the manufacturer of diethyl carbonate, we see demand for rigorous performance, especially in battery electrolytes. Our factory’s experience shows there are a few properties of diethyl carbonate that really drive its selection for this application—including properties we control closely through production and quality assurance.
Batteries react poorly to water and contaminants. Tight restrictions on water content are standard in battery-grade diethyl carbonate, often below 50 ppm. Higher levels lead to hydrolysis, forming ethanol and carbon dioxide inside the battery. This reaction shortens cell life and causes gas generation. We achieve low moisture through vacuum distillation, in-line drying, and real-time Karl Fischer moisture testing during fill and packaging. High purity—often above 99.95%—also matters because trace impurities like methanol, acetone, or chlorinated compounds contribute to capacity fade and increased internal resistance. We apply gas chromatography with mass spectrometry to scan for trace solvents in every lot. Our process design avoids metal contamination, as metals catalyze unwanted decomposition reactions in the battery cell environment.
Diethyl carbonate brings a low viscosity and moderate boiling point—about 126°C—into the mix. This assists with rapid lithium ion migration during charging and discharging. Electrolyte performance depends on how well these ions travel through the solvent; higher viscosity alternatives slow things down, especially at lower temperatures. The moderate boiling point means the solvent doesn’t evaporate too quickly during cell assembly but stays “mobile” enough for electrochemical performance. Diethyl carbonate holds up under normal battery operating temperatures, resisting chemical breakdown as long as impurities are controlled. Of course, diethyl carbonate is highly flammable, so every stage—from our solvent purification units to tanker loading—follows strict fire safety procedures.
The ability to dissolve and stabilize lithium salts such as LiPF6 makes diethyl carbonate valuable. Its dielectric constant sits in a useful range for electrolyte function: not as high as ethylene carbonate, but compatible for blending in multi-component systems. Our blending operations often combine diethyl carbonate with EC or dimethyl carbonate to balance low-temperature fluidity with solid electrolyte interphase (SEI) formation. Pure diethyl carbonate brings low viscosity to the final blend, ensuring reliable charging even at cold temperatures—a priority for large energy storage installations and electric vehicles.
Production runs must stay consistent, especially where solvent odor indicates purity and absence of decomposition. Diethyl carbonate’s mild, fruity odor is familiar to anyone working on the plant floor; any deviation signals an out-of-spec batch. Our closed-system handling, nitrogen-blanketed tanks, and UV-blocking packaging all contribute to long shelf life and product stability. Customers get technical support on recommended storage temperatures and handling, because even the best solvent loses effectiveness if exposed to moisture or metal surfaces during downstream operations.
Every shipment leaves our plant with full quality documentation—COA, analysis records, and batch traceability down to raw material lots. We know lithium-ion battery producers expect rigorous transparency: our manufacturing team keeps detailed process logs to support quality claims. On request, our technical managers provide additional analytical support, such as ion chromatography reports or custom impurity profiles for sensitive applications.
Direct production control at every stage gives us the ability to guarantee performance criteria for diethyl carbonate. As battery technology keeps evolving, our continuous improvements in solvent purification and QA give partners downstream the reliability they rely on.
We operate every stage of Diethyl carbonate production, from raw material sourcing through final quality checks. Our clients typically approach us for large-scale, repeat shipments, so inquiries about minimum order quantity (MOQ) and lead time often come up in the early stages of any discussion. Our experience in handling hundreds of bulk orders a year gives us a practical, no-nonsense view on what factors really determine lead times and volume limits.
For bulk supply, the MOQ reflects the need to make the entire production cycle efficient and cost-effective. We set this threshold at one full ISO tank—usually about 20 metric tons—for each batch. This configuration balances transport costs, ensures optimal capacity utilization, and maintains stable product quality. Partial shipments below the typical tank capacity tend to invite unnecessary handling costs, extra cleaning cycles, and increased risk of contamination.
Consistency in bulk purchasing also keeps our reactor utilization high, helping us offer stable pricing to buyers who plan their purchases sensibly and work with us on annual or quarterly schedules.
Once buyers lock in a contract and pre-shipment terms are cleared, lead time for Diethyl carbonate generally ranges from three to four weeks for fresh production and loading. The core manufacturing process itself typically runs on a fixed schedule, with every batch undergoing full in-house analysis for purity, acidity, and residual solvents. If a specific grade is required or multiple tanks are ordered, coordinating logistics and documentation can extend this schedule—especially if clients need pre-shipment sampling or additional third-party inspection.
Unexpected delays crop up most often around customs clearance or port congestion, not inside the plant. Our team monitors outbound shipments closely so we can give clients real-time updates and estimated arrival at destination port. Severe weather, major holidays, and peak shipping seasons have the biggest impact on total lead time, so buyers should always factor in local and international calendar events.
Longstanding clients who provide rolling forecasts secure priority allocation on both product and transport slots, since we can better plan production campaigns over several months. For new buyers or those needing custom purity specs, early technical engagement with our R&D team makes a significant difference in confirming feasibility and locking in achievable delivery dates.
Clients with firm yearly volumes gain from structured call-offs and flexible release scheduling. This type of partnership reduces warehouse downtime, lowers demurrage risk, and keeps both parties focused on core site operations rather than last-minute freight or quality issues.
We always recommend direct engagement between technical departments at both ends before committing to the very first shipment. This rapid problem-solving approach stops headaches before they reach the shipping stage and builds trust across purchase cycles.
Bulk procurement works best through close coordination between buyer and manufacturer. Our longstanding production expertise has shown that efficient scheduling, precise shipping volumes, and transparent communication yield the safest, most cost-effective outcomes for everyone in the supply chain.
From our standpoint, navigating international shipping for Diethyl carbonate calls for deep familiarity with global chemical regulations and transport protocols. Over decades of production and logistics, we have observed that even small details in regulatory changes can impact export timelines. Diethyl carbonate, due to its flammable nature and solvent properties, falls within strict hazardous goods classifications. Our technical team works actively to monitor updates from agencies such as UN, IMDG, IATA, and individual country requirements, ensuring every shipment is properly documented and classified.
Diethyl carbonate typically aligns with UN1161 under the UN system and is classified as a Class 3 flammable liquid for both sea and air transport. We use this classification responsibly, given its low flash point and volatility. In our experience, customs authorities scrutinize documentation to verify exact hazard labels, safety data sheets, and transport packaging. Our containers bear compliant flammable liquid labels and unambiguous hazard pictograms as set out by international transport conventions.
We ship in dedicated drums or IBCs meeting UN performance level packaging criteria. Our packaging lines undergo annual audits to preserve compliance. Seals and batch codes trace material back to production, supporting documentation integrity from factory to destination. This traceability gives users and authorities confidence in both material identity and safe transport.
Before dispatch, our logistics team prepares a dossier for every batch. This includes the certificate of analysis, properly formatted SDS (aligned with GHS and local requirements), bill of lading citing correct classification, and emergency contact information. We abide by the IMDG Code for ocean freight and IATA DGR for air shipments. From our experience, countries frequently demand extra documentation—such as TREMcards in Europe or additional product registrations for import licenses in certain Asian countries.
Regulatory details can shift, especially as countries update their chemical control regulations. We continuously monitor the frameworks such as REACH (Europe), TSCA (USA), and local equivalents in Asia-Pacific and the Americas. We maintain dialogue with competent authorities to interpret grey areas swiftly, minimizing the risk of border delays or rejected shipments. Training of our compliance staff is ongoing, to ensure all outgoing cargo files present current hazard categorization and supporting certificates.
Most shipping delays stem from overlooked updates to SDS wording or outdated packaging. We avoid this through proactive review of both physical product labels and all data handles before each release. In our experience, the smallest incongruity in shipping paperwork can result in regulatory hold at ports. Our strict batch documentation process, plus real-world rehearsal of incident response protocols, forms the backbone of our transport reliability.
For customers requiring unusual shipping configurations or exports to high-regulation markets, our technical and regulatory team can provide direct support and advice. We understand the impact of compliance-driven logistics costs and work closely with forwarders to avoid avoidable surcharges or paperwork repeats.
Our ongoing investment in compliance infrastructure reflects our responsibility as a producer and exporter. By harmonizing manufacturing transparency, regulatory vigilance, and robust logistics support, we ensure every international dispatch of Diethyl carbonate meets current legal frameworks, protects downstream users, and maintains trust in our supply chain.
For product inquiries, sample requests, quotations or after-sales support, please feel free to contact me directly via sales3@ascent-chem.com, +8615365186327 or WhatsApp: +8615365186327
