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HS Code |
554202 |
| Cas Number | 123-72-8 |
| Molecular Formula | C4H8O |
| Molar Mass | 72.11 g/mol |
| Appearance | Colorless liquid |
| Odor | Pungent, strong |
| Density | 0.801 g/cm3 at 20°C |
| Melting Point | -96 °C |
| Boiling Point | 75-76 °C |
| Flash Point | -7 °C (closed cup) |
| Solubility In Water | 7.3 g/L at 20°C |
| Refractive Index | 1.382 at 20°C |
| Vapor Pressure | 93 mmHg at 20°C |
As an accredited N-Butyraldehyde factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | N-Butyraldehyde is packaged in a 25-liter blue HDPE drum with a secure screw cap and clear hazard labeling. |
| Shipping | N-Butyraldehyde is shipped in tightly sealed, corrosion-resistant containers such as steel drums or tanks. It must be stored in a cool, well-ventilated area away from heat, sparks, and open flames. Proper labeling and hazard communication are required, and transportation complies with relevant regulations for flammable liquids. |
| Storage | N-Butyraldehyde should be stored in a cool, well-ventilated area, away from direct sunlight, heat sources, and incompatible materials such as oxidizers and acids. Store in tightly closed, properly labeled containers made of materials compatible with aldehydes. Use explosion-proof equipment and ensure proper grounding to prevent static discharge. Avoid moisture and sources of ignition, as N-Butyraldehyde is flammable and volatile. |
Applications of N-Butyraldehyde in Industrial ManufacturingN-Butyraldehyde is a pivotal intermediate within several large-scale chemical manufacturing corridors, anchoring processes where performance, safety, and regulatory alignment remain paramount. Drawing on decades of process expertise and downstream technical engagement, our N-Butyraldehyde consistently fulfills stringent formulation and purity benchmarks across demanding segments. Explore dedicated application scenarios below, each strictly mapped to its authentic industrial relevance. 1. Production of 2-Ethylhexanol for PlasticizersWithin large-volume polymer additive supply chains, manufacturers utilize N-Butyraldehyde as a primary feedstock for producing 2-Ethylhexanol (2-EH), the critical precursor for plasticizers like dioctyl phthalate (DOP) and dioctyl terephthalate (DOTP). Here, quality control targets trace aldehyde content and low water levels to support high catalytic yields. The oxo process, combining N-Butyraldehyde with hydrogen in aldol condensation under high pressure, directly impacts the plasticizer’s physical properties, migration stability, and regulatory acceptance for flexible PVC applications. Industry compliance standards
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2. Manufacture of Trimethylolpropane for Alkyd and Polyester ResinsThe alkyd and polyester resins sector processes N-Butyraldehyde in multistep transformations to synthesize trimethylolpropane (TMP), a polyol providing branched backbone structures for high-solid and low-VOC resins. Stringent supplier audits validate batch lot purity and absence of cross-aldehyde contaminants, as these impurities can directly influence polymerization kinetics and gel structure during downstream resinification. Industry compliance standards
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3. Synthesis of n-Butanol for Paints and Solvent MarketsCo-located at major oxo process sites, n-Butanol production utilizes N-Butyraldehyde through hydrogenation reactions controlled for minimum side-product formation, vital for high-purity solvent production. Paint and coatings manufacturers specify low aldehyde residues to avoid impact on gloss, cure, and film formation. As a dedicated solvent precursor, this route demands robust process validation and multi-point in-line monitoring. Industry compliance standards
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4. Pesticide Intermediate for Crop Protection ProductsN-Butyraldehyde functions as the foundation for select synthetic intermediate steps in agrochemical production, including the manufacture of herbicide constructs and specialty fungicides. Compliance requires full batch tractability and conformance to agrochemical precursor audit protocols. Optimized additions reduce off-path isomer formation, impacting downstream actives conversion rates and formulation shelf life. Industry compliance standards
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5. Synthesis of Flavor and Fragrance IngredientsIn the aroma chemical industry, N-Butyraldehyde undergoes clean catalytic condensation and reduction steps to form high-purity aldehydic and alcohol notes used in designer fragrances and food flavoring additives. Flavor houses and perfumers mandate raw material conformity to international food safety and IFRA guidelines, with narrow acceptability on byproduct levels, particularly for low-odor profiles. Industry compliance standards
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6. Production of Pharmaceutical Intermediates (API Precursors)Multi-step active pharmaceutical ingredient (API) synthesis leverages N-Butyraldehyde in fine chemical pharma routes, most notably where reductive amination or oxime production forms require precisely controlled impurity profiles to avoid downstream process contaminants. Batch records necessitate cGMP-compliant documentation with quantifiable impurity limits and validated cleaning procedures at every transfer junction. Industry compliance standards
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Every chemical plant runs on decisions made by folks who work with their hands, experiment with their eyes, and trust what they see before them. In our plant, N-Butyraldehyde comes from years of experience, revision, and practical trial. This is not a catch-all chemical you grab off a shelf, shrug, and hope for the best. It is nuanced, efficient, and direct in how it supports your processes—even if you’re gassing up reactors in bulk or feeding a single trickling line. This is the direct voice of the people who actually make this material, fill each drum, and see where every drop ends up.
Our N-Butyraldehyde flows clear and colorless, not just because we say so, but because we see each batch as we test, load, and package. In the market, you might hear numbers thrown around about purity and specs. What matters most in practice? We manage to reach a minimum purity of 99.5% by weight, and our typical lots regularly push 99.8% and higher. Every operator on our shift looks for water content below 0.05%. This matters because a single percent more water can push downstream issues in plastics, pharmaceuticals, or lube oil plants. The integrity of feedstock lines and the life of catalysts can ride on simple mistakes like that.
Every 180-kilo steel drum or isotainer that leaves our gate holds nothing unaccounted for. We work under ambient nitrogen so you don’t get a head full of air or an unexpected trace level of oxygen. Labels represent what’s inside: unstressed, unadulterated product with a true spec sheet—and we run our own GC checks so lab numbers match shop-floor reality.
N-Butyraldehyde, also known as butanal, slots in as a versatile C4 aldehyde. Process chemists and downstream users know that you use it for its reactivity and the straight backbone it brings to chemical modifications. On top of that, it is highly selective in reactions, letting you trust yields and avoid sticky byproducts, something we have seen save both solvent costs and filtration headaches in allied plants along the supply chain. Its uses matter more than textbook lists: every large plasticizer producer, synthetic lubricant formulator, and specialty resin mixer has either tried it, is using it, or is searching for a better source.
Don’t think of N-Butyraldehyde as just another step in an unfamiliar reaction scheme either. You see it turned to n-butanol by hydrolysis, supporting all sorts of plastics and resin intermediates. Add a little hydrogen cyanide and you get valeraldehyde for perfumes. Further oxidation? Welcome to butyric acid—a core taste in flavors and pharmaceuticals. Each conversion we monitor and each grade we tailor reflects learning from the dozens of end-users who have called us directly with their on-line process quirks.
Anyone who’s worked deep in chemical processes sees the difference between straight-chain and branched isomers. Our N-Butyraldehyde, as a linear C4 structure, behaves differently from isobutyraldehyde. Plant engineers notice right away: the straight chain interacts with catalysts and enzymatic reactions with greater predictability. Yields stay higher, separation columns run cleaner, and byproduct formation falls off. We have worked with downstream customers who needed this particular molecular structure for automotive coatings and high-value lubricants, not just because it fits a basic spec, but because those parts of the chain react in ways that take pressure off every succeeding unit operation.
We have seen sophistcated pharma setups where a slight impurity in the backbone cascades into a stubborn side reaction at the next step. By sticking to straight-chain N-Butyraldehyde and refusing to accept less, formulators maintain consistency batch after batch, even under relentless regulatory audit.
One of the most direct questions we get is about the practical differences between N-Butyraldehyde and its isomeric cousin, isobutyraldehyde. Both will show up on supply lists for some applications, but any practical operator sees their limits. N-Butyraldehyde’s straight chain keeps it from branching into unexpected reaction products. Isobutyraldehyde, on the other hand, is branched and it handles hydroformylation—and other carbonyl-based reactions—less efficiently in certain settings.
The environmental side of things counts, too. If you have a permit that strictly limits volatile organic compounds or offspec reactants, the straightforward handling and boiling point of our N-Butyraldehyde reduces unplanned downtime. It also lessens headaches for process safety teams. We have tuned our storage and transfer approach so that, in the event of repurposing large reactors for more sensitive downstream chemistry, record-keeping and cleaning cycles go smoother and cut over time in half.
We make N-Butyraldehyde by hydroformylating propylene with syngas—a process we run under tightly controlled conditions. Our reactors do not leave things to guesswork. If you’ve worked with propylene-based feedstocks, you know their reliability comes down to operator attention every single hour. Our plant uses redundant monitors for pressure and temperature, which keeps reaction conditions right every cycle. This control gives a product with tightly held impurity levels: methyl ethyl ketone, isobutyraldehyde, and formic acid stay well inside tough internal guidelines.
Down the line, we cool and purify by fractionated distillation, using stainless hardware maintained and replaced following hard-won experience from prior shutdowns. No more fouling, no more guessing about residual aldehyde content. Each drum gets closed quickly and purged with N2 to prevent unwanted polymerization in transit. Our own team handles every phase, from catalyst adjustment to tank farm maintenance, ensuring hands-on quality protection every week of the year.
Every plant manager knows: paperwork only matters if it matches what the plant produces day-to-day. Our normal specs focus on values like density, color (under APHA standards, no more than 10), refractive index tight to 1.334–1.336 at 20°C, and acid value below 0.002%. More than checking boxes, these numbers align to the demands of real polymerization reactions, not just generic catalog requirements. If you’ve ever run a test batch with off-color aldehyde, you know it stains intermediates and carries right through into the finished ester or acid, affecting downstream QC rejections.
Improperly stabilized or poorly stored N-Butyraldehyde tends to go yellow, forming peroxides and resinous byproducts. From long experience, we reinforce a cold storage chain and regular inhibitor checks. Most notably, we learned firsthand after a summer outage that poorly insulated tanks bake out impurities much faster than any lab report can predict. These lessons shape not just how we formulate specs but how we enforce them—so you get what actually works.
Process interruptions and reruns usually happen not because a chemist made a theoretical mistake, but because of hands-on unpredictables: a stuck valve, an overrun batch, a misloaded feed tank. We’ve spent years learning when an off-odor from a small batch signals unwanted polymerization, or when a minor water spike reveals a condenser leak miles upstream. Our technical support comes directly from the shop floor, not just theoretical support staff. This means we spot real-world problems fast—helping diagnose filter blockages, monitoring for peroxide traces, or suggesting process tweaks based on what we’ve seen from hundreds of batch starts, stops, and restarts.
If you call us, you reach engineers and techs that’ve personally measured those GC columns and checked those distillation runs. We have already worked out fixes for things like reclaiming slightly offgrade aldehyde for non-critical solvent sales, or developing safe approaches to handling recycled drums after long-haul shipments. We don’t just make a spec; we live the problems and know when even a trace contamination will leave you running behind schedule, or why a subtle rise in APHA color signals issues that’ll ripple into resin gel times. That kind of direct problem-solving only comes from years with sleeves rolled up and watchdogs on every shift.
Shipping chemicals means more than loading drums and ticking off paperwork. We maintain a logistical link from dispatch to your receiving dock, using only routes and vendors that have proven reliable under pressure. During past unrest or pandemics, our shipments still arrived in full, because we had contingency plans and backup warehouses lined up. You receive drums with seals that aren’t cracked, labels that actually stick, and lot traceability for every kilogram.
Long-standing users of our N-Butyraldehyde remark on how consistent drum weights and fill levels mean zero surprise inventory shortfalls. We outfit drums with inert seals and purge headspaces with nitrogen, cutting the chances for slow oxidation between the door and your plant—details picked up from plenty of feedback and a few hard-learned lessons in early years. Staff and drivers undergo regular hazardous goods courses, so plant handover does not risk product loss or workplace miscommunication. From our view, sharp logistics present as much value as the reaction yield itself.
Downstream users have called us about batch scale-ups, regulatory audits, and sudden capacity cuts in other regions. Whenever N-Butyraldehyde demand spikes—whether from a spike in coatings projects or a plastics market swing—we keep our output steady. Formulators at plasticizer companies factor in the characteristic volatility and low boiling point for efficient extraction and safe reactor venting. Perfume houses depend on our low-odor, clear product for the aldehyde’s clean top notes. Specialty lubricant chemists trust our straight-chain structure for creating flow improvers that stand up to harsh, high-load operations, knowing there’s little risk for unexpected polymer formation.
We’ve even worked directly with university labs piloting novel catalytic pathways, supporting them with technical samples and feedback about downstream processability. That gives us a seat at the table for emerging applications, not just legacy ones. Our feedback runs two ways: we take user complaints or oddball requests, work through our own trial batches if necessary, and pass back both improvements and honest talk about what does or does not work. If plant operators call about high-solid losses or off-gassing headaches, we can trace back root causes—whether feedstock, equipment, or shipping related—with practical insight, not just bland reassurances.
Regulatory compliance for N-Butyraldehyde is not just paperwork for our handlers. It goes well beyond local and national requirements. We have tailored production and handling processes to meet tight emission controls under current chemical safety frameworks. Environmental teams on our site have minimized venting losses through closed loop vapor management, cutting both plant emissions and safety audit findings. We keep full records of lot traceability down to the hour and vessel—so process audits run smooth and operators can pull real history in minutes, not hours.
Over several regulatory cycles, we revised our inhibitor and stabilization routines. Now, we ship material that does not just pass at the dock door but still tests clean months down the line at your facility. Polymers coming out after seasonal storage run just as clean as those made from fresh drums. We keep up with evolving standards because ignoring them stalls your plant and ours alike. This dedication makes the difference in large-scale plants where even one off-spec shipment can set off a cascade of operational headaches, permits lapses, or worse. Investing day-in, day-out in emissions monitors and incident response tools pays off not just for inspection grades, but for the business relationships that shape the long haul.
Over time, our field team has walked lines at lube oil plants, inspected receiving tanks at resin manufactories, and run quick cleanouts in fine chemical production rooms. These site visits sharpen our own upstream processes. We have implemented customer tips in our loading bay setups: better drum stacking, added temperature tracking, and improved inhibitor dosing for orders going to warmer climates. Each modification in house reflects real user feedback and emerges from the tight feedback loop that comes only because our team deals directly with your site leads—not filtered through layers of trading firms or intermediaries.
By listening to those using our N-Butyraldehyde daily, we built a catalog of use cases, workarounds, and success stories that shape additional guidance for new users. If a plastics processor needs to swap in an alternative base with higher flexibility, or a QC chemist negotiates a rare filtration snag, we can recommend what works because we have solved these same issues before. This personal contact, over years and hundreds of shipments, creates the backbone of reliable supply and continuous improvement.
Experience on the factory floor counts for more than any sales brochure. Our N-Butyraldehyde stands out because it is made with learned habits, procedural discipline, and a level of transparency you detect at the drum, not just on a spreadsheet. We know from years of audits and operator logs that our approach reduces out-of-spec incidents, delivers cleaner feedstock, and improves process yields in both large and bespoke applications. Straight-shooting reporting, real technical support, and the kind of open customer relationship that only manufacturers provide make the difference batch in, batch out.
Our reputation relies on every kilogram leaving this plant. It is not just a molecule, but a product of real teamwork, hard-won process know-how, and every odd-hour call solved by people who handled the process from raw propylene to sealed drum. If there are differences in quality, consistency, or use, those differences stem from hard labor—checked, checked again, and proven every week in the actual field. Customers old and new discover this on their own floors, time and again, when our N-Butyraldehyde delivers the outcomes their process needs.