| Names | |
|---|---|
| Preferred IUPAC name | 1,3-dioxolan-2-one |
| Other names | 1,3-Dioxolan-2-one Ethylene glycol carbonate Ethylene carbonate Glycol carbonate Monoethylene carbonate |
| Pronunciation | /ˈɛθ.ɪ.liːn ˈkɑː.bə.neɪt/ |
| Identifiers | |
| CAS Number | 96-49-1 |
| Beilstein Reference | 411980 |
| ChEBI | CHEBI:39497 |
| ChEMBL | CHEMBL1234441 |
| ChemSpider | 61453 |
| DrugBank | DB11270 |
| ECHA InfoCard | 100.007.803 |
| EC Number | 203-506-7 |
| Gmelin Reference | 50627 |
| KEGG | C06447 |
| MeSH | D004977 |
| PubChem CID | 727 |
| RTECS number | KI1785000 |
| UNII | 94A4E11224 |
| UN number | UN4379 |
| Properties | |
| Chemical formula | C3H4O3 |
| Molar mass | 88.06 g/mol |
| Appearance | White crystalline powder |
| Odor | Odorless |
| Density | 1.32 g/cm³ |
| Solubility in water | Soluble |
| log P | -0.32 |
| Vapor pressure | 0.03 mmHg (20°C) |
| Acidity (pKa) | 16.4 |
| Basicity (pKb) | 1.37 |
| Magnetic susceptibility (χ) | '-11.9 × 10⁻⁶ cm³/mol' |
| Refractive index (nD) | 1.415 |
| Viscosity | 1.90 mPa·s (at 40°C) |
| Dipole moment | 4.9 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 90.7 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -669.05 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | -1799 kJ·mol⁻¹ |
| Pharmacology | |
| ATC code | S01XA25 |
| Hazards | |
| Main hazards | Harmful if swallowed. Causes serious eye irritation. Causes skin irritation. May cause respiratory irritation. |
| GHS labelling | GHS02, GHS07, GHS08 |
| Pictograms | GHS07, GHS08 |
| Signal word | Danger |
| Hazard statements | H302, H319 |
| Precautionary statements | P210, P261, P280, P305+P351+P338, P337+P313 |
| NFPA 704 (fire diamond) | 1-1-0 |
| Flash point | > 160°C |
| Autoignition temperature | 395 °C |
| Explosive limits | Explosive limits: 4.2–16% (in air) |
| Lethal dose or concentration | LD50 (oral, rat): 10,000 mg/kg |
| LD50 (median dose) | LD50 (median dose) of Ethylene Carbonate (EC): "10,000 mg/kg (rat, oral) |
| NIOSH | NA790 |
| PEL (Permissible) | 50 mg/m³ |
| REL (Recommended) | <= 0.1 mg/m³ |
| IDLH (Immediate danger) | IDLH: Not established |
| Related compounds | |
| Related compounds | Propylene carbonate Dimethyl carbonate Diethyl carbonate Ethylene glycol Urea |
| Parameter | Value or Commentary |
|---|---|
| Product Name | Ethylene Carbonate |
| IUPAC Name | 1,3-Dioxolan-2-one |
| Chemical Formula | C3H4O3 |
| CAS Number | 96-49-1 |
| Synonyms & Trade Names |
EC Ethylene glycol carbonate 2-Oxolanone Glycol carbonate |
| HS Code & Customs Classification |
29209010 (Under "Other Cyclanic, Cyclenic or Cycloterpenic Mono- or Polyamines and their Derivatives") Actual HS code should be confirmed at export/import, as regional classification distinctions and updates apply. |
Ethylene carbonate falls under the carbonate family, where its cyclic organic structure forms the backbone of several battery electrolyte, polymer, and specialty solvent applications. Grade selection draws heavily on end-use specifications. For lithium-ion battery applications, residual water, halide content, and trace glycols drive batch acceptance. Solvent and intermediate grades prioritize color, odor, and acidity control, with variance in specification depending on downstream compatibility.
Process route defines impurity profile. Industrial production relies on the reaction of ethylene oxide with carbon dioxide, with raw material purity influencing downstream purification burden. Residual ethylene glycol or chloride sources are managed by design through in-process controls such as filtration, distillation, and, for critical grades, dedicated polishing columns and moisture scavenging steps. Batch-to-batch consistency leans on process automation, in-line moisture analysis, and periodic gas chromatography for key byproducts.
HS code assignment can be application or market-specific due to periodic customs reclassifications in different jurisdictions. For high-volume export, regular harmonization with customs updates is required to prevent clearance delays or misclassification risk.
Ethylene carbonate’s storage and packaging protocols must reflect sensitivity to hydrolysis and air moisture pickup for battery grades. Drum lining, nitrogen blanketing, and container sealing procedures vary based on destination region and transit duration. Release criteria always defer to the most demanding end-use; battery grade is not released before passing low water content and high purity thresholds, as confirmed by both in-house and third-party labs where customer requires.
From a manufacturer’s standpoint, a transparent CAS, formula, and HS code database entry must be updated to reflect active process and regulatory changes. An outdated code or outdated IUPAC listing can create compliance and downstream chain issues, so ongoing monitoring and technical review remain part of core documentation routines.
Ethylene carbonate typically exits the reactor as a colorless to pale yellow solid. Whether a batch presents as a crystalline solid or a viscous liquid depends on both processing temperature and purity. Minor yellow tones may reflect trace impurity content. EC exhibits a faint, characteristic odor at elevated temperatures; distinct odors may signal contamination.
EC's melting point falls within a narrow range just above ambient temperatures, which has implications for process transfer and storage; batches kept above melting point will remain flowable, but below this temperature, EC sets as a solid, complicating direct transfer. Actual melting, boiling, and flash points differ between technical and battery grade—the latter requiring tighter impurity control, sometimes shifting observed melting behavior. Density values depend on temperature and grade, impacting dosing and formulation calculations.
In manufacturing and storage, EC remains chemically stable under absence of strong acids/bases and elevated moisture. Under alkaline or acidic contamination, hydrolysis may take place—yielding glycol and carbon dioxide. VC and DMC-forming side reactions amplify when trace catalysts or high temperatures intervene in downstream processing. Monitoring for persistent reactivity after extended storage is recommended.
EC possesses moderate solubility in water at elevated temperatures and dissolves well in common polar aprotic solvents (like dimethyl carbonate, propylene carbonate). In battery electrolyte blending, solution behavior must be validated for each batch due to effects from trace residuals; minor differences in water or ionic contaminant profile lead to visible cloudiness or phase separation in specialty applications.
Grades are defined for applications such as battery, pharmaceutical intermediate, and industrial solvent use. Precise target ranges for appearance, purity (typically GC area% or HPLC), moisture content (by Karl Fischer titration), and color (APHA or Hazen) are all set grade-by-grade. Final acceptance limits react to internal and customer test results; tighter cutoffs apply for battery and pharmaceutical use.
Main tracked impurities include epoxide residues, chlorides, glycols, and cyclic oligomers. Moisture content, total organic volatile impurities, and metal cations all draw stricter limits for battery and pharma grades. Raw material quality, synthesis efficiency, and purification system effectiveness collectively determine the impurity pattern.
Production lots are tested using gas chromatography, liquid chromatography, Karl Fischer analysis, and spectrophotometry. Method selection varies: For trace metals, ICP-OES or AAS is used; for trace halides, IC or potentiometric titration. Units implement both internal standards and internationally recognized protocols (often customer-defined for lithium battery supply chains).
EC synthesis depends on ethylene oxide and either carbon dioxide or urea feedstocks; supplier prequalification for low byproduct formation and contamination control is mandatory. Battery and pharma customers commonly request vendor traceability and absence of unknowns in upstream supplies.
Direct carbonylation routes are generally favored over urea-based routes due to higher yields and simpler downstream purification. Catalyst selection (e.g., quaternary ammonium salts, alkali metals) impacts both conversion efficiency and impurity carryover. Critical control points include reaction temperature and pressure, ratio of reagents, and catalyst removal.
Tight control of reaction conditions reduces formation of oligomeric and glycolyl byproducts. Several purification steps—distillation and crystallization—follow, each targeting specific contaminants. Solvent wash, vacuum stripping, and final filtration produce the grade required. Our plant typically defines process controls using continuous in-process analytics and batch analytics at each purification stage.
Batches do not ship unless samples meet established grade standards, including identity by chromatography/spectroscopy, purity, water content, and color. Battery-grade runs demand additional checks on metals and halogen content. In-process adjustments are routine based on trends in impurity profiles or deviations observed during test runs.
EC undergoes ring-opening with bases forming glycols, carbonation with nucleophiles yielding carbonate esters, and transesterification with alcohols. Each reaction path finds use in polymer, electrolyte, and specialty intermediate processes. Reaction rate and product purity typically depend on the presence of trace catalysts and reaction temperature.
Nucleophilic substitution and transesterification commonly run under mild to moderate heating, sometimes with basic or acid catalysis. Selection of solvent depends on scale and downstream need; absence of trace water or ions is non-negotiable in lithium battery routes. Temperature, catalyst identity, and agitation speed serve as prime levers for adjusting product profile.
Principal derivatives include vinylene carbonate (via elimination), dimethyl carbonate (transesterification), and ethylene glycol (hydrolysis). Battery electrolyte producers scrutinize base and acid impurities since they shift performance in cell environments. Full traceability of feedstock and side product interfaces is requested by major battery customers.
EC remains stable in tightly sealed containers away from heat, direct sunlight, and humidity. In our experience, introduction of atmospheric moisture accelerates hydrolysis. Packaging in dry-inert conditions safeguards solid and liquid form for sensitive applications; for battery grade, nitrogen blanketing or sealed drums are common.
Stainless steel, polypropylene, and certain fluoropolymer-lined drums offer best compatibility. Use of mild steel or poorly sealed packaging raises risk for moisture ingress and iron leaching, especially after extended periods. Drug and battery producers demand written confirmation of container history.
Actual shelf life varies by handling environment, grade, and packaging. Solidification, yellowing, or odor shifts often signal contamination or formation of degradation products. Re-testing after long-term storage is routine prior to high-end use; out-of-spec lots are rerouted, not supplied.
EC is commonly classified as hazardous based on irritation potential; latest international GHS systems inform site signage and training content. Labels reflect the most recent legal requirement, which can change based on regulatory review or client region.
Typical hazard statements call out risks for skin and eye contact, potential reproductive toxicity, and environmental persistence. Internal handling rules restrict open transfers outside ventilated containment and require PPE for all direct contact personnel. Facilities audit these controls frequently, especially after product spills or containment breaches.
Toxicological evaluation draws from published animal studies and regulatory literature; acute exposure limits are subject to review based on the latest scientific data and workplace control monitoring. Recommended human exposure levels reflect current legal standards in manufacturing and bulk packaging areas. Training targets known health endpoints and provides protocols for exposure incidents and spill mitigation, emphasizing first response and proper decontamination.
Our EC production lines operate with batch and continuous processes, supporting both high-volume base-grade output and specialty grade manufacturing tailored to downstream lithium battery, electrolytes, and polymer applications. Availability varies seasonally: planned plant maintenance, raw material supply disruptions, and regional logistics capacity affect allocation. Peak demand for lithium battery applications exerts pressure on spot supply, particularly during the first and third quarters. Orders linked to pharmaceutical or specialty syntheses often call for tighter spec and smaller batch runs, which influence scheduling and output mix.
Lead time aligns with production planning, purification queue, and customer grade requirements. Baseline technical grade EC for industrial solvent use can be readied and loaded within 2-5 weeks from order acceptance, unless upstream ethylene oxide feedstock experiences volatility. Battery and pharmaceutical grades require additional QC and trace impurity documentation, extending lead times. Minimum order quantities depend on purification batch size and cleaning/validation protocols between grades; larger release lots are possible for continuous bulk supply agreements, while specialty grades call for higher per-kilogram processing cost and therefore carry higher MOQ policies.
Packaging selections—steel drums with anti-static liners, intermediate bulk containers, and tailored tank truck options—depend on purity requirements, regional ADR/DOT/IMDG regulations, and traceability requests. Export configurations commonly involve nitrogen blanketing. Cosmetic or reagent grades with strict contamination sensitivity rely on smaller, validated container units and enhanced secondary sealing during loading.
Standard EXW, FOB, and CIF commercial terms apply, with negotiated payment terms subject to supply agreement length, history, and global shipment route risk profiles. Battery and specialty chemical producers often require staggered shipments throughout the year, impacting logistics allocation and payment scheduling. Compliance with destination import certification and anti-diversion controls imposes further procedural checks, particularly for high-purity and dual-use end applications.
EC pricing closely tracks the cost structure of upstream ethylene oxide and carbon dioxide, compounded by energy-intensive purification and solvent handling stages. Batch quality control, raw material origin characteristics (petrochemical/fossil or bio-based feedstock), and process optimization introduce cost variability. Each tonne of EC incorporates feedstock volatility risk and various purification steps, each drawing on different grades of energy, labor, and environmental control costs.
Raw materials for EC—primarily ethylene oxide—face global supply bottlenecks linked to crude oil/naphtha price swings, seasonal maintenance cycles in EO plants, and force majeure events. Spot and contract differences arise from regional regulatory adjustments, carbon taxation schemes in the EU, and energy price spikes. Downstream demand shifts, especially in the lithium battery sector, can stress feedstock chain commitment, causing short-term pricing surges or allocation rationing. Regional policies and logistics constraints (rail congestion, port delays) may create temporary differential pricing windows.
Base-grade EC serving general solvent and industrial application often carries the most competitive price, as production tolerates a wider impurity window and utilizes standard purification. Battery grade EC, destined for electrolyte use, requires rigorous per-batch impurity testing (moisture, acid, and transition metals content) and dedicated handling. Price differentials stem from multi-stage purification, certification, and enhanced traceability protocols. Pharmaceutical and reagent grades demand even more stringent production segregation and contamination control, driving higher cost per kilogram and stricter batch release documentation. Certification for transportation, storage, and environmental compliance (e.g., REACH, TSCA) further stratifies final product price.
Global EC capacity remains concentrated in East Asia—mainly China and South Korea—with expanding footprint in India and select North American/EU facilities. Overall, demand is dominated by lithium-ion battery electrolyte production, especially with EV market acceleration, complemented by polymer and coating intermediates. Tight supply occurs during downstream expansion cycles or when feedstock EO plants face prolonged outages.
| Region | Key Features |
|---|---|
| US | Stable base chemical supply; fluctuating output linked to energy prices and scheduled maintenance; downstream consumption weighted toward automotive and established chemical sectors. |
| EU | REACH registration and compliance raise entry barriers; energy transition policies impact cost base; growing battery sector investments create new demand centers. |
| JP | High demand for battery grade EC; local producers maintain strict spec margins; limited expansion means import reliance during demand surges. |
| IN | Expanding domestic production; rising demand from local pharmaceutical and polymer sectors; import/export dynamics in flux as new plants come online. |
| CN | Largest global capacity; competitive on technical grade; lead player in battery sector demand; faces shipment bottlenecks during peak season and policy tightening. |
Price trend modeling uses plant-level production survey data, feedstock supply tracking, and downstream demand projections in EV and polymer markets. As battery gigafactory expansions commit to multi-year EC supply agreements, spot market volatility is expected to persist. Feedstock cost instability, carbon policy tightening in the EU and Asia, and logistics constraints may support nominal upward pricing through 2026, punctuated by short-term corrections tied to new capacity ramp-ups or regulatory interventions. Data sources include internal production volumes, customer tender outcomes, public trade statistics, and industry association analysis.
Capacity announcements continue in East Asia for new EC lines targeting battery and high-purity applications. Several supply chain partnerships have formed between upstream EO suppliers and battery manufacturers to secure stable, high-grade EC access. Freight congestion in key Asian and European ports has delayed shipments, causing supply tightness and prompting elevated contract allocations in export markets.
New hazard classification revisions for EC in EU and US have prompted updated Safety Data Sheet content and downstream use advisories. China and India have increased environmental scrutiny on EO and EC plant emissions. Suppliers are adjusting production audits and investing in trace impurity controls to maintain compliance with evolving regional standards and customer acceptance criteria.
To address compliance and capacity challenges, investments continue in process automation, on-line impurity monitoring, and modular purification upgrades. Scheduling flexibility for multi-grade production lines minimizes cross-grade impurity excursions. Close alignment with approved logistics and packaging validators reduces rejection risks at destination. Multi-year supply contracts between key battery manufacturers and principal producers aim to counteract market volatility and safeguard downstream growth trajectories.
Ethylene carbonate stands out in several sectors for its high solvent power, strong chemical stability, and broad compatibility with organic and inorganic compounds. Different industrial segments rely on specific grades based on their functional and regulatory needs.
| Application | Recommended Grade(s) | Key Parameters | Manufacturer Notes |
|---|---|---|---|
| Lithium-ion Battery Electrolytes | Electronic/Electrolyte Grade | Water content, trace metallic ions, purity, particle count | Battery-grade EC requires extremely low water, low metal ions (especially sodium, potassium, iron, and nickel), and tight particulate control. Each batch receives batch-by-batch moisture titration and ICP-OES trace analysis before release. |
| Polymer Synthesis/Polycarbonate Polyols | Industrial Grade, Polymer Grade | Color (APHA), purity, acidity | Polymer producers seek low color and controlled acidity levels. Feedstocks are selected and processed to minimize chromophoric and acid-generating impurities, since these directly impact polymer transparency and stability. |
| Oil Field Chemicals/Corrosion Inhibitors | Industrial Grade | Total organic content, by-product glycols, residual catalyst | Oilfield users less frequently require water/metal control but monitor total organic impurity load closely, as downstream formulation dictates. Source selection can be tailored to regional regulatory compliance. |
| Pharmaceutical Intermediates | Pharmacopeia/USP/EP Grade (by demand) | Bacterial endotoxin, heavy metals, residual solvents, purity | Pharmaceutical-grade supply involves higher scrutiny in both raw materials (pharma-compliant sources only) and production environment (cGMP zones). Release standards depend on customer/end-use requirements rather than single fixed values. |
| Coatings & Adhesives | Standard Industrial Grade | Odor, color, viscosity | Key process controls address precursor selection and in-process rectification to ensure paint and adhesive performance withstands variability in EC composition. |
Specify the actual process or product using EC. Each application sets its own requirements for purity, physical form, and impurity limits. Avoid assuming a “universal” value; communicate your own performance and formulation goals at the outset.
Map out all local, international, and customer-driven regulatory standards for your application. Regulatory needs (RoHS, REACH, USP, EP, etc.) sometimes exceed general industry baseline. Manufacturers first qualify feedstock and process routes based on ability to meet these regimes and document the compliance path for each batch.
Discuss actual purity profile (including types and sources of impurities) with QC or technical staff. For lithium battery users, clarify “total impurity,” metals, and water thresholds—these cannot be generalized. Polymer users, in contrast, may focus on acid value and chromophore management as they impact end-use optical and mechanical performance.
Align grade selection with real-world batch sizes, logistics, and budgetary planning. Manufacturers can offer bulk or small-lot packaging, but some grades are only produced in specific lot sizes. Look beyond price per kilo—low-impurity grades require extra process controls and lab validation, which increases cost and lead time.
Before full-scale purchase, request a sample for your own process validation. Analytical reports and batch sample documentation (FTIR/GC/Karl Fischer) are provided for review. Reproducibility between sample and main batch is managed at the plant by internal batch archival and customer-supplied validation feedback.
As a chemical manufacturer, our quality management system operates under continuous oversight by internal audit teams and recognized third-party certifying bodies. For Ethylene Carbonate production, system stabilization relies on frequent procedural reviews and corrective actions tied to audit findings. Valid certificates support export and regulatory inspection, but daily reliability results from process discipline—a plant floor approach that cannot be substituted by paperwork alone.
Inspection regimes for various grades—battery, industrial, or pharmaceutical—align to the particular risk profile of the application. Auditors focus on source traceability, operator training, and documentation of change control, especially where final product features are affected by subtle process changes.
Ethylene Carbonate batch certifications match the grade requested and end-use compliance. Typical grade distinctions—electrolyte, technical, or high-purity—stem from purification protocols, raw material origin, and analytical release plans. Certificate of Analysis (CoA) reports provide trace documentation, with analytical methods traceable to regionally or globally recognized standards. Final certificates bear witness to the full scope of tests undergone, validated against customer or regulatory requirements.
Hazardous chemical management documents (e.g., GHS-compliant SDS) come directly from technical and EHS teams, not adapted from distributor templates. For cross-border shipments or specialty regulatory regimes, relevant test reports accompany each consignment when legally or contractually required.
Every shipment leaves with a documentation packet that covers batch numbers, production date, origin of critical raw materials, full analytical results, and special comments tied to that batch’s processing history. For EC, trace amounts of residuals—such as ethylene glycol or related byproducts—are tracked and reported when above background detection, especially for electronic or pharmaceutical uses where batch-to-batch consistency is fundamental. Users requiring custom certificates (for example, compliance with particular regional chemical control lists) should specify their requirements during the purchase process so our QC team can integrate these wells before dispatch.
Long-term supply reliability for EC depends on upstream reliability and process route management. Securing steady output hinges on raw material sourcing diversification and the capacity to reroute material flows during planned maintenance or force majeure events. Customers requiring guaranteed delivery timelines are encouraged to engage in capacity reservation or call-off contracts with our commercial team. This locks in quarterly cycles, mitigates inventory risk, and allows for proactive buffer adjustments.
Flexibility in transaction mode (spot, contract, framework agreement) reflects the customer’s usage pattern. For development projects and scale-up, smaller call-off volumes can be accommodated with notice provided before start of production.
Core production line throughput for Ethylene Carbonate (EC) is managed by tracking run rates, maintenance intervals, and raw material inventories. Production allocation aligns to grade-specific demand forecasts, with highest-purity requirements receiving scheduling preference due to more intensive purification steps and extended analytical verification. In-process controls actively track parameters that affect physical state and impurity profile—such as reaction end points and solvent purity—to shorten cycle times for release.
Supply consistency depends on robust logistics and buffer stock planning. The technical team coordinates closely with logistics for temperature control, handling precautions, and regulatory shipping routes. Any shipment requiring temperature-controlled or dedicated containers must be disclosed during procurement discussions to coordinate capacity and compliance.
Sample requests for EC begin with disclosure of the intended end use, volume range, and regulatory regime. Typical evaluation samples originate from core production tanks, not laboratory or pilot lines, to ensure test results reflect routine plant output. Users requiring special production lots—for example, to validate a novel impurity threshold or physical property—should coordinate with the technical support team to define the sampling plan, analytical reference methods, and documentation deliverables.
Sample shipment includes traceable batch information and a statement of analytical method traceability. For applications with risk of cross-contamination (e.g., battery electrolyte or pharmaceutical intermediates), dedicated production and transfer lines may be used on request, subject to lead-time and capacity constraints.
Procurement cooperation moves beyond simple transactions. For EC buyers with highly variable offtake or ramping project timelines, purchase arrangements can involve adjustable forecasting, rolling orders, and buffer inventory at the manufacturer or forwarder location. Contractual arrangements adapt to supply chain constraints: call-off purchase, consignment stock, or periodic automatic replenishment. When customers introduce new product formulations or processes, collaboration with our plant technical team enables specification adaptation, test protocol alignment, and rapid feedback during trial runs.
Direct information exchange with buyer’s quality and production units ensures clear communication on change management, documentation re-issuance, and batch-specific exceptions, maintaining technical credibility through transparent reporting rather than template answers.
Within the production environment for ethylene carbonate, continuous R&D focuses revolve around fine-tuning process yields and minimizing by-product formation during the reaction of ethylene oxide with carbon dioxide. Research labs prioritize catalyst formulation and lifetime extension, since minor improvements deliver cascading efficiency across both batch and continuous operations. Interest in battery-grade EC has led to a sharp emphasis on trace-level impurity control, primarily for water, chlorides, and organic residue. Demands from electrolytic lithium battery supply chains shape new analytical method development, especially toward rapid, high-sensitivity quantification.
Established uses in lithium-ion battery electrolytes continue to drive technical requirements for EC, but recent development points toward novel roles. Electrolyte formulations for next-generation cells and supercapacitors have prompted requests for grades with unique physical profiles—such as ultra-low moisture or tailored viscosity. A smaller subset of R&D teams evaluates EC as a regulatory-compliant intermediate for high-performance polycarbonates, or as a component in engineered solvents for specialty resin systems.
From a manufacturing perspective, the persistent challenge remains the management and removal of trace water and inorganic ions, particularly in high-purity EC. The selection of raw materials with narrow property windows is non-negotiable for battery customers. Recent advances involve closed-loop water removal systems and continuous chromatographic refining, which allow production teams to reach demanding low-ppm targets reproducibly. Small but steady progress in in-line quality analytics—such as real-time Fourier-transform infrared monitoring—helps reduce batch-to-batch variability, especially for material slated for export-grade certification.
Global demand for EC tracks closely with projected lithium-ion cell capacity buildout, especially in regions scaling energy storage and EV production. Manufacturers anticipate year-on-year volume growth, but customer forecasts also signal a preference shift toward customized solvent profiles and dynamic supply models. Supply expansions remain tightly coupled to access and control over both high-purity ethylene oxide and efficient carbon dioxide utilization.
Plant engineering teams pursue incremental process intensification to shrink unit costs—by recovering more heat, reducing unwanted side reactions, and recycling reactor purge steams. Advanced purification technology, particularly in distillation and liquid-liquid extraction, forms the basis of technical upgrades in most EC plants. Both modular and large-scale continuous lines compete based on throughput flexibility and impurity profile control, not simply gross output. In regions with strict import controls or fast-shifting technical standards, manufacturers dedicate more R&D to adaptable skid-mounted systems suitable for rapid grade changeover.
The deployment of carbon capture integration into the EC synthesis route has advanced, but plant operators encounter region-specific infrastructural hurdles. Technical quality teams are tasked with secondary life cycle assessments, especially for battery-sector EC, examining energy input sources and total carbon balance. Recovered carbon dioxide purity and continuity remain technical bottlenecks in full-closed-loop operations. Emerging green chemistry themes push for safer catalyst bases and reduced-resource operations without sacrificing critical impurity thresholds set by downstream formulators.
Experienced application engineers and quality specialists provide technical guidance from pre-shipment lot selection through full-volume qualification. Most consultation occurs early in the supply chain, where slight formulation or storage variations significantly affect downstream electrolyte preparation. Batch histories, including impurity spectra and physical properties, are made available to technical customers to aid in root cause analysis if process anomalies arise in the user's plant.
Process support does not end at delivery. Support teams assist with compatibility evaluations, solvent blending strategies, and storage method improvements to maintain the target-grade profile throughout the customer’s handling chain. For high-purity and battery-specific grades, ongoing feedback is relayed between manufacturing QC and customer R&D regarding off-spec fractions, trace impurity fingerprinting, and logistic optimization to minimize time out-of-spec risk.
Manufacturing teams operate under pre-defined release and recall protocols aligned with each product grade, supported by batch-specific documentation and internal audit trails. Any technical non-conformity triggers an investigation into production control points, raw material supply consistency, and previous batch behaviors. Corrective actions depend on the customer’s application risk assessment and are communicated directly by site-based technical leaders, not external support agents. Continuous improvement feedback, based on customer process performance and supplier-side incident data, directly shapes future process and packaging changes.
Ethylene carbonate functions as a highly valued solvent and intermediate across multiple industries. As a company directly responsible for both synthesis and process oversight, we supply this compound at defined purity levels suitable for commercial applications. Our plant manages the entire conversion from raw ethylene oxide and carbon dioxide, controlling the critical reaction and purification stages that influence finished quality and reliability.
Customers in lithium-ion battery manufacturing depend on our ethylene carbonate for its dielectric properties and solvency. Consistent molecular structure and moisture control enhance performance in electrolyte blends without interruption to automated production. In lubricants and greases, the chemical stability and compatibility profile assist engineers in modifying base stocks as required. Polymer processors and specialty chemical formulators use our product as both a reactive intermediate and solvent, counting on batch-to-batch reproducibility to keep formulation and curing steps predictable.
Quality assurance integrates directly into each batch operation. In-process monitoring targets moisture, halide, and color, with on-stream instrumentation for critical parameters. Final product delivers within strict purity and water specifications, supported by batch release procedures developed to satisfy large-scale battery and plastics customers. Our laboratory equipment and calibration routines reflect the importance of traceability and data transparency for audit trails and downstream compliance.
We pack ethylene carbonate using materials selected for chemical resistance during both transport and storage. Drum, IBC, and bulk container formats allow for flexible shipment—direct from our own site. Batch codes on all containers link shipment to the production date, analytical records, and full chain of custody. Professional handling teams coordinate safely with customer facilities, and our logistic planning reduces unexpected supply gaps.
Technical support for ethylene carbonate users comes directly from the staff managing production and quality systems. Process integration questions and material compatibility issues draw on real plant case studies and test results. Our specialists address process improvement and compliance adaptations for industries with evolving regulatory landscapes. Analytical data, performance history, and material behavior under varying conditions stay accessible to authorized industrial customers, strengthening operational confidence.
Factories, procurement professionals, and distributors benefit from direct supply control offered by a single production source. Consistent scheduling and transparent release standards support accurate inventory planning while reducing risk associated with variable purity or missed deliveries. We engage in long-term technical and supply planning collaborations, working with customers to optimize cost, compliance, and product performance. Our production and logistics framework promotes uninterrupted supply and steady quality, enabling efficient operation for downstream processors and large-scale formulators.
In lithium-ion battery manufacturing, every step demands attention to detail. Ethylene carbonate, as a high-permittivity solvent, lays the groundwork for safe and efficient battery electrolyte solutions. The quality of electrolyte chemicals ties directly to battery capacity, lifecycle, and safety—the wrong impurity or water content can trigger side reactions, gas formation, capacity fade, or even catastrophic failure at the cell level. Field failures due to trace impurities or excess moisture push the industry to maintain stricter controls year after year. This isn’t just theoretical; we’ve seen clients rigorously test incoming EC lots, and a deviation by even a handful of ppm in moisture or impurity spikes causes entire batches to be rejected before production even starts.
No producer sets out for "good enough" in battery chemicals—our process targets purity regularly above 99.95% for battery applications. Elevated standards began with large cell manufacturers, but now even smaller battery producers insist on impurity limits in line with international benchmarks. Achieving this means investing in dedicated distillation and purification units, fine-tuning reaction parameters, placing strict material requirements on incoming feedstocks, and operating under continuous monitoring protocols that validate each batch. In our experience, higher purity prevents trace metal and organic contaminants from catalyzing unwanted breakdown in finished cells.
Some operations in our sector claim a minimum of 99.9% content, but we see growing requests for assured levels near 99.99% for demanding applications—especially for automotive battery cells where cycle life and safety are non-negotiable. Delivering this means more than adjusting a line—it presses us to implement inline GC and moisture monitoring and set up controlled environments from drying to final packaging.
The role of water content in EC rarely gets enough attention outside of technical teams, but elevated moisture pushes up risks of hydrolysis, unwanted gas formation, and lithium salt decomposition. Commercial battery manufacturers often refuse deliveries with water above 50 ppm. In our production facilities, we routinely achieve water content below 20 ppm, and for high-end cell manufacturers, we deliver EC where water is limited to 10 ppm or even lower. These values aren’t just a response to spec sheets—they reflect recurring feedback from production lines where margin for error has vanished.
Consistently meeting these targets comes through a combination of vacuum drying, use of high-purity nitrogen blanketing, low-moisture environment transfer, and rigorous container validation. If a drum arrives at the client’s facility with even slightly higher moisture due to seal compromise, the implications run straight to the bottom line—scrapping electrolyte, lost production time, and reputational damage. Our QC teams validate every lot via Karl Fischer titration before release.
Ongoing collaboration with battery OEMs, tech upgrades, and decades of solvent distillation know-how push the margin for tighter specifications. By controlling material from synthesis to drumming, investing in process data transparency, and integrating direct feedback from cell manufacturers, we keep impurity and water content at levels that ensure safety, efficiency, and commercial reliability. It’s not just about what can be measured—we reflect client experience and constructive feedback into the plant floor, reinforcing why ongoing QC, batch traceability, and fast-response customer support are just as vital as pure molecules in a bottle.
Ethylene carbonate has become a backbone ingredient for lithium-ion battery electrolytes, specialty polymers, and several industrial applications. With over two decades operating our plant, we prioritize clarity and consistency in our order process because most of our clients build supply chains that hinge on predictable product flow.
Our minimum order quantity reflects what it actually takes to run a full lot through our purification line. We set this threshold to avoid frequent, small-batch campaigns that risk cross-contamination or dips in purity. For solid Ethylene Carbonate, our line moves by the metric ton, so we set our minimum per shipment at one full pallet—about 900 kg. Bulk liquid orders run directly from storage tanks and require dedicated tankers; for this, the minimum sits at 15 metric tons to support safe bulk transport and keep packaging resources under control. We only dispatch orders at these volumes because it allows us to stabilize transport rates and maintain consistency.
Molecular solvents such as Ethylene Carbonate need careful handling. Every time we prepare a campaign, we perform batch log validation, filter exchange, and clean out production lines to keep contaminants out. The time and cost of these steps grow if small-volume orders enter the queue. Standardizing larger minimum orders supports ongoing investment in equipment that keeps batch quality high and lets us dedicate technical expertise where it is most needed—on accurate batch documentation and end-use compatibility.
Our lead time for Ethylene Carbonate rests on two key factors: our current production schedule and transport arrangements. We operate on a just-in-time system for regular clients with annual supply contracts, giving them weekly or monthly slots in the production schedule. For new customers or irregular projects, our standard runtime to shipment typically lands between 3 to 5 weeks after firm order confirmation. The timeline includes batch scheduling, QC lab validation, and any export document preparation.
Seasonal peaks or feedstock interruptions can nudge lead times further out. For clients relying on forward supply, contractual stock agreements help minimize risk by locking in production blocks during the highest demand quarters. We urge our regular customers to forecast volumes three to six months ahead; with rolling demand projections, we can balance reaction vessel time, lab testing, and logistics to avoid disruptions.
Our manufacturing site holds industrial certificates, and all shipments receive quality certificates, material safety data, and regulatory export files. Most of our customers in battery or polycarbonate manufacturing pull product in UN-certified drums, IBCs, or by ISO-tank. We package and seal goods at our facility, barcode all pallets for digital tracking, and arrange export customs clearance directly.
We take pride in providing an uninterrupted flow of Ethylene Carbonate that matches manufacturing needs in both volume and timeline. Any changes in global shipping lanes or feedstock pricing get relayed to partners early, as transparency remains the only way for production teams at both ends to work with confidence. As a direct manufacturer, these practices come from firsthand experience, not theory—every decision on minimum order size or fulfillment delay reflects lessons we have learned in the field alongside our customers.
Ethylene carbonate plays an essential role in industries ranging from battery manufacturing to specialty chemicals. Over the years, we've shipped this product by bulk containers, drums, and intermediate bulk containers to clients across the Americas, Europe, and Asia. Each region comes with its own regulations and thorough documentation requirements. International shipping of ethylene carbonate is not an informal business. Ensuring full compliance with cross-border transport laws is central to our process.
Ethylene carbonate falls under the category of an industrial chemical, and many countries maintain strict oversight around the import, export, and transit of such materials. In most jurisdictions, this compound does not carry the types of hazards that, for example, organic peroxides or explosives do. Nevertheless, regulatory bodies expect us to meet a clear set of requirements in terms of labeling, classification, and specifically, transport documentation. Each consignment leaving our plant includes shipping paperwork that matches the Globally Harmonized System (GHS) rules for chemical labeling and hazard communication, as adopted per destination. Our team prepares an updated Safety Data Sheet (SDS) in the required languages for the receiving ports and delivers original copies alongside digital files.
Ethylene carbonate is generally not considered a dangerous good according to the International Maritime Dangerous Goods Code (IMDG Code) or the International Air Transport Association (IATA) dangerous goods regulations. This means our shipments do not fall under Class 3 (flammable liquids), Class 6 (toxic substances), or Class 8 (corrosives) unless the product specification is for special blends or contains impurity profiles that change the classification. Standard grade ethylene carbonate does not trigger the need for a special transport license as dangerous cargo, which offers certain logistical benefits, including fewer shipping delays and more flexible routing.
Still, authorities require robust documentation at every stage of the journey. We prepare Certificates of Analysis (CoA) for every batch, and our logistics team ensures pre-shipment inspection certificates are included when necessary, especially for high-value orders or where mandated by local import law. Material Identification and customs product codes follow Harmonized System (HS) convention, accelerating customs clearance for our international partners.
Our containers meet the recommendations set out in relevant international agreements, including high-grade sealing and secure labeling with hazard statements and precautionary codes, even if ethylene carbonate is not under heightened danger classifications. Some countries include ethylene carbonate in their chemical inventories or restrict quantities depending on end-use, so our compliance teams keep active registrations and reporting channels open to avoid regulatory delays.
Maintaining total traceability for each shipment is crucial. Each drum or IBC features our manufacturer's mark and batch number, which links back to raw material sourcing and production records. This meets both customer demands and the traceability standards required by global regulatory agencies.
Shipping laws evolve, especially as destination countries tighten controls on chemical imports. Our compliance staff works directly with forwarders and border authorities to ensure up-to-date permits, certificates, and global chemical notifications are issued and accurate. By investing in these systems and processes, we can provide customers with certainty that ethylene carbonate from our plant arrives with the correct documentation, safely, and in line with all present-day regulations.
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
