| Names | |
|---|---|
| Preferred IUPAC name | Butan-2-one |
| Pronunciation | /ˈmɛθ.əl ˈiː.θəl ˈkiː.tɒn/ |
| Identifiers | |
| CAS Number | 78-93-3 |
| 3D model (JSmol) | `3D model (JSmol)` string for **Methyl Ethyl Ketone (MEK)** (IUPAC name: Butan-2-one): ``` CC(=O)CC ``` This is the **SMILES** string format, commonly used to represent 3D structures in JSmol and similar viewers. |
| Beilstein Reference | 636116 |
| ChEBI | CHEBI:34952 |
| ChEMBL | CHEMBL15828 |
| ChemSpider | 6088 |
| DrugBank | DB02710 |
| ECHA InfoCard | 034-001-00-8 |
| EC Number | 2.6.4.2 |
| Gmelin Reference | **Gmelin Reference: 142771** |
| KEGG | C00988 |
| MeSH | D005939 |
| PubChem CID | 6569 |
| RTECS number | EL6475001 |
| UNII | 6PT9KJV4TV |
| UN number | UN1193 |
| Properties | |
| Chemical formula | C4H8O |
| Molar mass | 72.11 g/mol |
| Appearance | Colorless, volatile liquid with a sharp, sweet odor |
| Odor | sweet, sharp odor |
| Density | 0.805 g/cm³ |
| Solubility in water | Soluble |
| log P | 0.29 |
| Vapor pressure | 78 mmHg (25°C) |
| Acidity (pKa) | 19.0 |
| Basicity (pKb) | 7.82 |
| Magnetic susceptibility (χ) | -8.6×10⁻⁶ |
| Refractive index (nD) | 1.378 |
| Viscosity | 'Low (0.43 mPa·s at 20°C)' |
| Dipole moment | 2.76 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 111.3 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -174.0 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | –2430 kJ·mol⁻¹ |
| Pharmacology | |
| ATC code | D07AX |
| Hazards | |
| GHS labelling | GHS02, GHS07 |
| Pictograms | GHS02,GHS07 |
| Signal word | Danger |
| Hazard statements | H225, H319, H336 |
| Precautionary statements | P210, P233, P240, P241, P242, P243, P261, P271, P303+P361+P353, P304+P340, P305+P351+P338, P312, P370+P378, P403+P235, P501 |
| NFPA 704 (fire diamond) | 2-3-1 |
| Flash point | -6 °C (21 °F) |
| Autoignition temperature | 515°C |
| Explosive limits | 1.8% - 11.5% |
| Lethal dose or concentration | LD50 oral, rat: 2737 mg/kg |
| LD50 (median dose) | LD50 (rat, oral): 2737 mg/kg |
| NIOSH | NIOSH: PB6125000 |
| PEL (Permissible) | 200 ppm |
| REL (Recommended) | 200 ppm |
| IDLH (Immediate danger) | 3000 ppm |
| Product Name & IUPAC Name |
Methyl Ethyl Ketone (MEK) IUPAC: Butan-2-one Industry production and labeling use these names interchangeably, based on local or regional conventions. IUPAC nomenclature appears primarily in regulatory filings and chemical registrations. |
|---|---|
| Chemical Formula |
C4H8O
Structure is consistent regardless of production route. Grade selection typically does not affect the gross molecular formula, but may influence residual impurity profile or isotope ratios, especially in applications requiring high-purity feedstock. |
| Synonyms & Trade Names |
Trade names can signal intended application sector, e.g. coatings, adhesives, or cleaning, but all refer to the same principal substance. The synonymous usage covers the same CAS entity but packaging grade may differ in solvent and coatings supply chains. Regulatory declarations often standardize as “Methyl Ethyl Ketone, CAS 78-93-3.” |
| HS Code & Customs Classification |
HS Code: 2914.12
Categorization follows the international Harmonized System, with most customs authorities assigning MEK under 2914.12, “Butanone (methyl ethyl ketone).” Customs officers may inspect for product-specific identifiers, including labeling, bulk container documentation, or Safety Data Sheet reference. Exact sub-categorization varies depending on declared grade, use designation (industrial, technical, or reagent), and destination framework. Trade data accuracy relies on precise, grade-aligned declaration to minimize import/export disruptions and assure traceability. |
Manufactured MEK typically presents as a clear, colorless liquid with a distinctive sweet, sharp odor. Form and visual clarity can depend on both process route and grade control. Color assessment, usually measured by Hazen/APHA, reflects process contamination and packaging integrity. Residual color or haze signals possible oxidation, contamination, or solvent residues migrating from storage environments.
Exact values fluctuate by trace impurity levels and measurement methods. Commercial MEK grades are processed to exhibit consistent boiling points relevant in fractionation and recovery, which supports batch reproducibility in downstream solvent purification systems. Flash point matters in setting plant safety controls, fire suppression engineering, and shipment protocol.
MEK generally resists spontaneous reaction under controlled storage and handling. On the shop floor, exposure to oxidizers or heat influences the risk for exothermic reactions or peroxide formation, prompting enhanced monitoring in aging storage tanks. Metal container compatibility and atmospheric exposure drive process-dependent variability in stability.
Solubility profile remains grade-dependent. Industrial MEK dissolves a broad cross-section of resins, coatings, and adhesives, but residual water content and trace contaminants alter solvent performance and clarity. Water solubility is a routinely monitored parameter—batch variability can impact downstream formulating or cleaning efficacy.
Grades of MEK—such as industrial, technical, and ACS—differ by impurity limitations, targeted end uses, and analytical verification frequency. Final product certificates rely on compliance with internal quality control protocols and may include assessment of purity, color, water content, and stabilized residue.
Known impurities originate from raw material selection and synthesis route. Common targets include water, acetone, aldehydes, and peroxides. Exact acceptance limits rest on batch analytics and can be tailored for application-driven requirements, such as electronics or coating manufacturing.
Manufacturers maintain method control using titration, GC (gas chromatography), and Karl Fischer for water content analysis. Analytical standards correspond either to international benchmarks or customer-specific acceptance criteria. Interlaboratory reproducibility becomes a focal point, especially for critical application sectors.
MEK production typically leverages butylene feedstock streams, chosen for purity and availability on a regional basis. Feedstock selection impacts contaminant profile and downstream oxidation byproducts.
The main industrial route relies on dehydrogenation of secondary butanol or direct oxidation of butenes. Route selection reflects feed economics, process safety, and waste minimization. Each pathway creates unique impurity challenges and energy consumption profiles.
Processing units emphasize precise temperature and pressure control, with particular focus on managing exothermic risks during catalytic steps. Fractional distillation remains the industry core purification method, with specific attention to water and light ends removal. Recycled solvent streams require ongoing analytical control to preserve product integrity.
Quality teams enforce release only after confirming analytical results match batch specification for purity, color, water, and major byproducts. Batch failure leads to internal recycling or dilution protocols. Long-term customer supply contracts often trigger custom release protocols and scheduled batch audits.
MEK’s role as a solvent and ketone intermediate hinges on its reactivity with nucleophiles, acids, and select oxidants. Applications span condensation for resin production and surface preparation for coatings, where downstream impurities can impact yield and finish.
In plant environments, MEK’s reactivity is exploited at moderate temperature ranges, with acid or base catalysis depending on target reactions. Solvent recovery systems are engineered to minimize cross-contamination and maintain distinct batch identities.
Manufacturing derivatives such as MEK peroxide, or modified ketones for performance coatings, drives regular adjustment of in-process purification to reduce catalyst poisoning and off-odors in final applications.
Optimal storage calls for cool, dry environments and avoidance of direct sunlight. Light exposure fosters peroxide generation, especially in unlined metal tanks. Inert gas blanketing and vapor control support long-term quality retention.
Steel drums with specialized linings prove compatible; uncoated containers can leach and trigger product degradation. Plastic drums see use, provided compatibility testing with specific grades.
Shelf life varies by storage condition and grade; exposure to heat, air, or contaminated container surfaces speeds up peroxide formation and odor development. Routine shelf life reassessment supports safe warehouse practice.
MEK carries recognized flammability and health hazard warnings—current GHS standards classify it for flammable liquids, narcotic effects, and irritation risks. Actual labeling protocols adapt depending on jurisdiction, container size, and concentration.
Toxicological reviews cover inhalation, dermal, and ingestion routes. Strict exposure monitoring on the plant floor ensures compliance with regulatory limits, with particular checks during drum filling, blending, and bulk transfer phases. Spill handling involves both vapor containment and ignition control, with specific ventilation systems in high-volume storage areas.
In continuous operation plants, MEK production relies on acetone or butylene-based feedstocks, selected for regional cost efficiency, steady logistics, and process suitability. Yearly output can fluctuate, driven by domestic feedstock price changes, regulatory restrictions on VOCs, and scheduled turnaround cycles. Typical availability for contract customers follows annual planning, with excess spot lots depending on production margins and downstream solvent demand in coatings, adhesives, and inks.
Different grades—including solvent, HPLC, and specialty electronic—set the criteria for qualifying process streams and degree of purification. Capacity allocation to each grade changes with order patterns and end-market signals; for example, higher-grade material might command line prioritization where contamination risk limits cross-grade campaigns.
Lead time on standard-grade MEK reflects both current site run rates and upstream feedstock reliability. Unscheduled maintenance or regulatory checks on air emissions push lead times out, especially when capacity is shifted toward compliance upgrades. MOQ varies: bulk truck/ISO tank orders typically require larger contracted volumes due to cleaning cycles and residual assessment protocols, while smaller drums or IBCs can meet custom lot-size requirements for specialty users under negotiated conditions. MOQ may also depend on geographic shipping range and local inventory buffers.
Industry packaging covers ISO tanks for large-scale buyers, steel drums, IBC totes, and, for strict certification requests, custom-labeled/sealed vessels. Selection follows product grade: higher-purity grades require validated, inert, non-contaminating packaging. Packaging integrity undergoes QA to prevent ingress of moisture or air (which impact peroxide formation and stabilize shelf-life profiles for downstream formulations). Some applications additionally mandate traceability labels, tamper-evident caps, or country-specific labeling per hazardous cargo rules.
Bulk MEK ships under controlled temperature and hazardous goods protocols, using approved logistics partners. Maritime and rail freight dominate intercontinental shipments, where port regulatory checks and local logistics arrangements can introduce variable freight surcharges and delay risks. Payment terms negotiate between net 30 to 90 days for established clients, or LC terms for cross-border shipments into risk-averse or import-regulated markets. Some destinations face capacity gating due to regional chemical control lists or customs processing irregularities.
Raw material cost structure directly follows local prices of acetone, butylene, and catalysts; import parity affects international parity pricing in regions lacking local MEK production. Electricity and clean water consumption, plus VOC abatement, add significant site overhead—especially where local regulation tightens on emissions profiles. Catalyst consumption rates and plant throughput efficiency set real cost spread between commodity and electronic grades.
Price instability often traces to volatility in upstream feedstock contracts (especially acetone, which links to propylene and refinery economics). Scheduled refinery shutdowns, unplanned outages, or surges in downstream coating/PU resin output drive both peak-season surcharges and tight supply. Currency exchange rates, port congestion, and tariff changes (notably in US-China/EU-Asia trade routes) introduce additional short-term price spikes or depressions.
The biggest variable in MEK pricing comes from grade specification and certification. Industrial grade for bulk solvent users trades at the base price; higher-purity grades command premiums for tighter water, peroxide, or aromatic content control, with specific process routes required to minimize trace contaminants. Electronics or pharma grades require validated batches, release COAs, retestable shelf life, and QA batch traceability.
Drum- or IBC-packed MEK sees unit premiums over bulk loads, driven by handling, container certification, and export labeling requirements. Clients requesting HACCP or container-specific export compliance pay higher unit rates due to added process controls and trace documentation.
Asia-Pacific and North America represent the highest MEK consumption, with China accounting for the greatest production volume. Regional supply tightness results when Chinese export quotas compress or feedstock supply for acetone/butylene slumps. US market balance depends on the health of the automotive/refinishing and adhesives sector. Europe relies on imports, facing periodic tightness from EU REACH regulations and feedstock import pricing. Japanese and Indian demand reflects domestic polymer and ink sector health. Localized environmental laws in Japan have shifted some solvent demand to lower-VOC alternatives, tightening high-purity MEK supply.
US: Integrated production lines mean rapid response to regional demand surges; pricing reacts sharply to petrochemical feed disruptions.
EU: Import dependency combines with environmental fee structures, pushing up compliance costs and pricing volatility.
Japan: Tight specification for high-tech and coating exports; price correlation with yen-based feedstock imports.
India: Growth market; demand influenced by coatings and flexible film expansion. Local supply constraints create periods of heavy import reliance.
China: Flexible supply, but subject to central quota approvals and downstream capacity utilization. Large swing producer into regional market cycles.
MEK prices are expected to react to both feedstock price changes (linked to crude and natural gas trends) and regulatory pressures on solvent emissions—especially in EU and China. Greater adoption of lower-VOC alternatives may restrain volume growth in some sectors, but demand from automotive and adhesives remains resilient. Barring feedstock-specific disruptions, forward prices into 2026 will track broader petrochemical cycles with grade-specific premiums persisting for high-purity and certified grades. Supported by Asian and US demand growth and steady regulatory adjustments, volatility will likely persist, but long-term price direction ties to energy markets and policy-driven capacity reallocation.
Analysis based on internal procurement records, published industry market reports, official trade databases, and customer order history, supplemented with data from leading industry supply-chain monitoring services and government regulatory updates. Price and supply forecasts synthesize cyclical historical data, regional capacity announcements, energy policy shifts, and input from raw material procurement teams.
Recent plant expansions in China and Southeast Asia have shifted regional supply balances. Temporary shutdowns for VOC abatement improvements in both US and EU sites have tightened spot availability, particularly for certified high-purity grades. More solvent users have adopted digital order tracking, requiring tighter batch traceability and documentation from suppliers.
Ongoing changes in REACH regulations in Europe, and stricter air emission and workplace exposure standards in North America and Asia, force recalibration of plant emission controls and final MEK grade certification. Some markets impose local labeling and manifest requirements for cross-border shipments, which influence documentation flow and dispatch speed.
Manufacturing plants are adjusting batch scheduling to maximize QA throughput for compliance-driven grades. Investments in catalyst management, feedstock qualification, and real-time emissions monitoring aim to meet both customer requirements and changing legislation. Enhanced logistics partnerships and packaging QA are critical to maintaining delivery reliability where port regulations and export checks slow clearance.
In the factory, production teams see MEK delivered to sectors such as industrial coatings, adhesives, chemical intermediate synthesis, and electronics. For paint and coatings, MEK drives fast curing and good film formation. Laminating adhesive manufacturers rely on its solvency strength where compatibility with resins and polymers sets the bar for acceptable performance. In electronics, MEK finds a place in PCB cleaning and surface preparation stages, where residue levels and ionic purity influence downstream reliability.
| Industry | Application | Recommended MEK Grade |
|---|---|---|
| Coatings & Paints | High-solids coatings, OEM refinish | Technical, Coatings Grade |
| Adhesives | Laminating, contact adhesives | Technical, Industrial Grade |
| Printing Inks | Flexographic, gravure inks | Printing Ink Grade, Low Water Content |
| Electronics | PCB cleaning, degreasing | Electronic, High Purity Grade |
| Chemical Synthesis | Pharmaceutical intermediates, synthons | Pharma, ACS/Analytical Grade |
Paint formulators focus on water content and non-volatile residue. In adhesives, competition between resin solubility and viscosity requires a grade with low alcohol impurities and consistent evaporation rate. PCB manufacturers target ionic impurity minimization; technical production addresses these limits during distillation and storage to reduce circuit failure risks. Chemical synthesis plants request batch traceability and consistent carbonyl purity to avoid unwanted side reactions.
At the plant, each MEK grade starts with raw material assessment. The process route—be it direct dehydrogenation of secondary butanol or alternative oxidation pathways—dictates primary impurity patterns: unreacted alcohols, byproduct ketones, and water load. The purification goal is fewer carry-throughs into the finished solvent, using fractionation columns and dehydration units. Purity endpoint is tracked both by real-time off-gas and final tank sampling; deviations linked to column fouling or feedstock changes cause direct interventions.
Consistency from lot to lot shapes batch management strategy. Onsite teams use in-process controls, frequent small-batch validation, and regular maintenance shutdowns to reduce drift over the long run. The release of MEK for shipment only follows matched approval by at least two fully cross-checked analytical documents. For sensitive grades, such as electronics or pharma, extra filtration, moisture barrier packaging, and post-filling spot checks make the difference between acceptable and rejected product.
Manufacturing links every shipment to traceability logs. This supports customers managing downstream certifications—should regulation tighten or process changes call for historical data, sourcing origins and process status records are available for review.
Production of methyl ethyl ketone follows a documented quality management system audited by a recognized third-party certification body. The manufacturing site operates under procedures aligned with international management frameworks, monitoring incoming raw material lots, and applying critical process controls to limit batch variability. Audits include assessment of supplier qualification, traceability checks from receipt through finished product, and regular staff competency evaluations. Actual certification scope may be grade- or market-dependent, and ongoing maintenance relies on meeting both internal process criteria and third-party audit findings.
MEK batch release standards derive from reference methods aligned with application sector expectations, such as coatings, adhesives, or pharmaceutical intermediates. Product approval often involves compliance with local regulatory rubrics or sector-specific testing protocols. For high-purity or niche application grades, antifalsification measures or supplementary certifications may apply. The specific certification and compliance documentation available for each lot depend on the requested grade and the intended downstream application.
Technical documentation provided with each consignment covers Certificate of Analysis (COA) parameters, product traceability, and safety-related data. Documentation reflects test results based on issued specifications and production batch history. Reports may include statements relating to process route, key impurity content (such as water or by-product alcohols), compliance with declared analytical methodology, and conformity to client-specific critical limits. Inspection plans and release records are archived and transferred digitally or as hard copies in line with customer audit protocols.
Long-term procurement agreements are underpinned by a continuously monitored manufacturing schedule, robust raw material sourcing, and a multi-step supply buffering process. Production planning optimizes output through careful alignment of demand forecasts with scheduled preventive maintenance and raw material logistics. Realignment of volumes or delivery flexibility can be discussed for customers wishing to adjust monthly or quarterly intake, based on updated consumption forecasts or new project requirements.
MEK output stability links directly to the reliability of base feedstock suppliers and the maintenance of high-yield process operations. Key control points are located in raw material purity assessment, catalytic reactor condition, and phase separation processes, with special attention given to the minimization of unwanted by-products. The ability to support both spot and annual supply arrangements depends on maintaining intermediate inventory levels and dual-sourcing of process-critical consumables. Any requirement for tailored lot segregation or product-grade reservation is coordinated with our production planning team.
Sample requests are typically reviewed by the technical support group, who examine intended application, grade requirements, and subtotal sample volume necessary for validation testing. The request triggers both internal batch reservation and coordination with logistics to ensure product identity and non-contamination prior to dispatch. Each sample is accompanied by a batch-specific COA, with commentaries on any grade-specific features or known deviations from standard release criteria. Complex application support may include direct exchanges with process engineers to interpret analytical results for critical performance factors.
Business partnership models range from fixed-schedule releases to just-in-time procurement plans, structured in response to customer lead times, minimum order sizes, and expected delivery windows. Specialized requirements such as import/export documentation, compliance with specific local regulations, or secondary packaging options can be addressed contractually. For continuous operations, consignment or buffer stock models are available and monitored jointly through digital inventory tracking systems. Production and supply flexibility derive from staged manufacturing capacity, alternate logistics routes, and responsive materials management.
Process efficiency and byproduct reduction have taken priority across MEK production sites. Manufacturers continue to seek process improvements that cut energy load and minimize emissions through catalyst selection and process integration. Feedstock flexibility remains a focus, especially given global acetone price volatility. Pilot studies investigate options to increase raw material diversity—some focusing on n-butene oxidation, others looking at emerging bio-based sources, but scale-up remains a technical and logistical challenge. Advanced monitoring of reactor conditions and tighter impurity tracking are now routine at most facilities, as customer requirements trend toward stricter release profiles, particularly from sectors such as advanced coatings and electronics solvent applications.
MEK’s industrial role in coatings, adhesives, and inks has long been established, but demand from sectors like lithium-ion battery manufacturing and specialty polymer processing adds new dimensions. The drive for lower-odor, high-purity solvent for electronics and optical film industries is reshaping the spec profile demanded by downstream integrators. Another notable shift: customers in synthetic leather and high-resilience polyurethane operations insist on improved wetting and evaporation control, which puts high requirements on volatility curve and moisture content control through the entire chain.
The main constraint remains control of impurities such as diacetone alcohol and peroxides, which require a mix of in-line analytical feedback and targeted purification steps. Air oxidation plants continually adapt operational strategies to suppress byproduct formation based on catalyst aging and raw material swings. Breakthroughs center on integrated solvent recovery and the closure of process loops to capture and recycle MEK from vent and purge streams. Some units introduce advanced membrane and molecular sieve systems to refine dehydration, especially where electrical conductivity of final product is critical for end-use in sensitive electronics applications. The dynamic between batch and continuous processing underlines a key industrial divide: batch operations often realize tighter control on trace contaminants, while continuous lines focus on scale and throughput with a heavier analytical burden to flag out-of-spec excursions.
Outlook depends on regional segment demand and raw material pricing, with growth seen in Asia-Pacific coatings, resin, and battery segments. Demand from Western markets remains steady, but regulatory scrutiny on volatile organic compound (VOC) emissions directs attention toward process upgrades and possible substitution with alternative solvents where possible. Over the next three to five years, captive consumption in battery cell production and high-end film manufacturing shows robust growth—driving process adaptation toward higher purity, tighter water content, and reduced residue profiles.
Field-level automation and process analytics will shift more of the QC burden into real-time plant operation, reducing manual sampling. Refinement in reactor metallurgy and separation train design aims to contain corrosion and off-odor issues, a move shaped by feedback from high-spec clients. The industry is also evaluating feedstock shifts: hybrid models combining petrochemical and renewable inputs gain traction, but adoption pace depends on feedstock availability and customer price sensitivities. For certain geographies, regulatory frameworks already require plant operators to report and reduce Scope 1 and Scope 2 greenhouse gas emissions—a development shaping engineering investments for the foreseeable future.
Sustainability pressures drive incremental upgrades, most notably by improving material efficiency in distillation and condensation recovery. Advanced lifecycle assessment tools guide decisions on energy integration and waste valorization. Pilot installations for bio-derived MEK signal intent but industrialization hurdles remain unless downstream customers commit to green sourcing at scale. To address environmental compliance, many plants invest in post-combustion control and closed-loop vapor handling; these not only minimize local impacts but also reduce product loss. Efforts focus on rational solvent selection and lower-emission logistics, particularly for bulk export.
Process engineers and QC teams provide technical consultation rooted in actual plant data and customer application feedback. Consultation covers solvent compatibility checks, impurity sensitivity assessment by sector, and support for customer validation processes. The objective is to match grade and release specification to application needs, including optimization for drying rate, solvency, and residue profile depending on whether the material goes to coatings, adhesive, or high-purity electronics.
Specialist technical staff partner with customer R&D and QA units to address issues such as batch process scaling, tailoring volatility characteristics, and on-site troubleshooting of impurity-related effects on product aesthetics or downstream equipment. Application optimization includes both plant-visit diagnostics and remote review of process integration, often including joint method validation where customer processes use reclaimed or recycled MEK.
Support spans complaints investigation, root cause determination for out-of-spec batches, and provision of trace data on production history. Internal batch traceability systems allow fast retrieval of analytics from every release inspection. For product grade shifts or change of source, notification systems document all material changes and enable collaborative bridging studies. Ongoing technical bulletins update customers on relevant regulatory trends and recommended best practices for product storage, emissions handling, and safe solvent recovery. All post-sale inquiries are handled directly by in-house specialists with access to full production and test records, reinforcing traceability and response continuity.
As a direct producer of Methyl Ethyl Ketone (MEK), we maintain strict control over feedstock sourcing, reaction conditions, and purification steps in our manufacturing process. Our plant operates with continuous monitoring and automated controls at each phase, from catalytic dehydrogenation of secondary butanol to final refining. By investing in continuous process improvement and modern analytical systems, we avoid batch-to-batch variability and keep product characteristics stable across all deliveries. Our scale and integrated operations support consistent production volumes, meeting the expanding requirements of downstream industries.
Methyl Ethyl Ketone plays a critical role in several sectors. Coatings makers rely on MEK for its strong solvency power, fast evaporation, and compatibility with resins used in automotive, aerospace, and wood finishes. Adhesive formulators choose MEK due to its well-characterized solvency profile, promoting strong bonds with minimum residue. The chemical’s role as a process solvent supports specialty chemical synthesis, pharmaceutical intermediates, and polymer modification. Each sector depends on supply security, controlled purity, and the physical properties only achievable through tightly managed production.
Manufacturers operating high-throughput plants cannot afford disruptions caused by inconsistent solvent properties or off-spec shipments. We run in-line QC with gas chromatography and moisture analysis to ensure every batch matches defined grades for purity, water content, and distillation range. This minimizes process troubleshooting and reduces downtime for users working under ISO, GMP, or other regulatory environments. Inspection records for every lot support traceability and enable buyers to meet compliance audit requirements.
Plant logistics teams manage MEK filling into drum, IBC, and bulk tank formats under vapor control systems, preventing contamination and moisture pick-up. Orders for full container loads ship directly from the manufacturing site using dedicated assets, ensuring product integrity during handling and transportation. Flexible supply programs, including scheduled shipments and just-in-time solutions, let buyers synchronize inbound supply with production cycles and warehouse constraints.
Engineering and technical staff at our facility support process chemists, coatings formulators, and procurement teams with documentation, compliance certificates, and optimization data. Our in-house application lab provides insights on solvent behavior in production environments, helping resolve technical questions related to formulation, performance, or process safety. Practical know-how from large-volume industrial customers feeds back into product development and service improvements.
Direct control over MEK output allows us to supply users not only with a solvent, but also with risk-reducing service from a stable production source. Manufacturers benefit from reduced quality claims and lower stock-out risk. Distributors working with us gain reliable supply and rapid load-out. Procurement professionals can meet volume, compliance, and cost targets with confidence because of transparent supply chains and technical backup. The priority stays on delivering performance, reliability, and support to each partner in the value chain.
We have produced Methyl Ethyl Ketone at a global scale for decades, and the demand from various sectors continues year after year. MEK serves as a powerful and fast-evaporating solvent, recognized for its efficiency in dissolving resins, coatings, and adhesives. In our daily operation, we focus on maintaining high purity because even trace impurities in MEK can alter drying time, solvency strength, and downstream product consistency. We routinely analyze viscosity, water content, and purity after distillation, given the sensitivity of coatings and adhesives to even slight compositional variations.
MEK emerges as a clear, colorless liquid with a sharp, sweet odor. On the production floor, its low boiling point—typically around 79-80°C—accelerates drying in finished goods and shortens batch times during industrial application. Density measurements usually read near 0.805 grams per cubic centimeter at ambient temperatures. The product displays a strong volatility profile, which we harness for creating fast drying coatings in both automotive and printing industries.
Miscibility is another critical area; MEK mixes smoothly with water, alcohol, and most hydrocarbons, so it proves versatile in blended solvents or cleaning formulations. Our technical staff closely observes moisture ingress and temperature stability during storage and transport, since these can impact MEK's handling characteristics.
Our quality teams run GC analyses daily to keep MEK purity stable above 99 percent, eliminating disruptions in high-specification manufacturing. Chemically, MEK behaves as a medium-strength, polar aprotic solvent. We leverage its ability to dissolve nitrocellulose, acrylics, and many synthetic polymers, simplifying formulations for our industrial customers. Its ketone group confers high reactivity in certain synthetic pathways, which is why it is frequently used as both a carrier solvent and a process reagent.
MEK carries moderate flammability risk, evident from a flash point near -6°C. We take this into account in plant layout, ventilation, and fire protection procedures, and we train staff on best practices for handling flammable liquids. Occupational exposure guidelines shape our ventilation and monitoring policies, letting us ensure a safe and efficient workplace without compromising throughput.
We recommend stainless steel or carbon steel containers with secure lids for bulk MEK, and fit drum shipments with vapor tight seals. MEK can attack certain plastics and rubbers, leading us to avoid these materials during transfer or long-term storage. In large-scale production and distribution, environmental protection becomes a critical consideration. MEK’s volatility increases fugitive emission risks, so our facilities implement closed-loop loading and vapor recovery systems to meet or exceed environmental regulations.
Companies often face concerns about solvent emissions and safe use. In response, our R&D team develops custom blends and investigates recovery options that cut down on waste. We share best practices with clients for recycling solvent streams and choose raw materials that meet international standards. Our laboratory can run application-specific tests and provide detailed certificates of analysis, supporting customers who require traceability and regulatory compliance for their end-use sectors.
Because end users depend on continuous quality and predictable solvent performance, our process rigor remains central. From distillation columns to final filtration, every step is monitored to safeguard MEK’s physical integrity and chemical profile. Clients can expect technical documentation and ongoing support from our direct manufacturing team—ensuring not just reliable supply, but confidence in every shipment.
Our experience making methyl ethyl ketone (MEK) has taught us that shipping and storage needs evolve just as rapidly as demand across industries. Customers from coating, adhesive, and solvent sectors all look for options that support both efficiency and safety. We produce MEK at scale, which gives us flexibility in packaging solutions and allows us to keep strict control over process integrity from batch production to delivery.
We maintain several packaging formats for MEK based on years of logistics know-how and end-user feedback. Our most widely used container size is the 165-kilogram steel drum. These drums provide the best balance between volume, handling, and chemical compatibility, meeting established safety standards. We apply anti-corrosion linings and tamper-proof seals during production to maintain product quality in transit. Over time, requests for intermediate bulk containers (IBCs) have steadily increased from larger manufacturers. For these cases, we offer MEK in UN-approved 1,000-liter IBCs with high-density polyethylene liners. This option reduces handling steps and waste for plants with large-scale operations, especially in paints and resins processing.
Shift supervisors and plant engineers who specify smaller batch requirements often prefer metal pails, with our 18-kilogram option serving laboratories, pilot plants, and field service units. Only new, certified packages enter our filling line. Every container—whether drum, pail, or IBC—undergoes a final inspection before shipment to prevent leaks and assure appearance standards. In regions where custom pack sizes get requested, we evaluate feasibility in light of legal, safety, and customer quality needs. For companies seeking large, repeated volumes, we maintain dedicated lines capable of bulk tanker loading to minimize transit times and maximize plant uptime. Only our trained logistics staff handle MEK transfer into those tankers; their procedures reflect lessons gained from decades spent minimizing emissions and preventing contamination risks.
MEK’s hazard classification places firm requirements on how we handle, store, and ship. We anchor our minimum order quantity to practical thresholds based on available packaging and transport safety protocols. For steel drums, our minimum typically starts at a full pallet—equivalent to four drums. This volume supports the correct filling, sealing, and segregated storage needed for regulated solvents.
In the case of IBCs, our minimum is a single unit, provided the customer meets proper handling capabilities. For most other pack sizes, purchase quantities equate to full case lots to keep product protection during transit. Operational efficiency in our plant also benefits from batch runs in multiples of minimum order sizes, making better use of both labor and machinery. Bulk tanker orders require shipment in full-load volumes; our logistics specialists coordinate directly with the customer’s receiving facilities to prevent offloading delays.
As a direct manufacturer, our role extends beyond simple filling—we embed years of real-world logistics, regulatory, and customer service experience into each order. Our customer support and technical teams understand the specific storage and handling regulations that apply to MEK. We help customers select compliant packaging, plan volume requirements that support workflow, and ensure that shipments match operational schedules. If a customer needs to discuss custom solutions, we review potential formats and advise on the need for specialized certifications or labeling to meet international standards.
Our production and packing teams work side-by-side to eliminate cross-contamination between products, treat every batch as shipment-critical, and confirm each container meets our checked criteria. Market demand pushes our operations forward, but safety always anchors our approach. We rely on tested supply chains and experience-backed methods. Our focus remains on quality, reliability, and meeting our customer’s most pressing requirements with every order.
Methyl ethyl ketone (MEK) serves a wide range of industrial uses, but international shipping brings together layers of regulations, classification rules, and safety standards. Each time we send a consignment to another country, we address regulatory requirements at several levels—local, national, and global.
MEK classifies as a flammable liquid under UN 1193, which means international moves fall under strict transport regulations. The International Maritime Dangerous Goods (IMDG) Code and IATA Dangerous Goods Regulations outline handling and packaging rules for ocean and air shipments. Authorities such as the US Department of Transportation (DOT), European Union’s REACH, and China’s MEE also enforce their own sets of protocols.
We’ve seen customs authorities examine safety data sheets (SDS) and product classification documents during border checks. Our technical team regularly updates these materials, so shipments meet the latest labeling and document standards. Staff undergo regular training to handle variants in regulatory language and cope with surprise inspections or document requests from customs officers.
Our standard drums for MEK feature UN-approved materials and closures, which help prevent leaks or vapor loss. Regulations require clear hazard labels and pictograms with the flammable symbol, including transport diamond labels and legally compliant markings. Before dispatch, we verify that batch numbers, manufacturing dates, and gross weights display accurately on each drum. For some clients, we also provide tamper-evident seals because destination countries sometimes require proof that packages have not been opened en route.
Customs clearance problems largely trace back to missing or incomplete documents. We prepare all essential papers, including the commercial invoice, packing list, bill of lading, certificate of analysis, and SDS. For certain markets, MEK falls under restrictions as a precursor chemical, so we obtain pre-export notifications and import permits where needed. Countries such as India and those in the EU request additional compliance documents under their chemical control regimes.
On the logistics side, we partner with shippers who hold recognized credentials for hazardous cargo. Vehicles or containers must be free from open flames, sparks, or contamination from incompatible chemicals. Our warehouse staff segregate MEK from oxidizers, acids, and food items in storage, matching local regulations in both origin and destination. Temperature and ventilation controls ensure MEK remains in a stable liquid state, reducing vapor accumulation and ignition risk.
For air shipments, we follow IATA packing instructions and cargo aircraft-only restrictions, since passenger aircraft cannot carry quantities above certain limits. With ocean freight, the shipping line may request advanced notice for stowing MEK containers away from living quarters or engine rooms.
We track ongoing regulatory changes. For example, new GHS label updates, SDS format revisions, and port entry controls in major hubs like Rotterdam or Singapore require us to keep our exports compliant on each shipment. Regular dialogue with customs brokers and end-users helps us spot issues before cargo gets delayed at the border.
Shipping MEK overseas means working within a sophisticated regulatory network. By handling compliance at the source, we keep trade routes open and shipments on schedule for industrial clients worldwide.
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
