|
HS Code |
272201 |
| Cas Number | 4436-83-9 |
| Molecular Formula | C5H9NO |
| Molecular Weight | 99.13 g/mol |
| Appearance | Colorless to pale yellow liquid |
| Boiling Point | 122-123 °C |
| Melting Point | -80 °C |
| Density | 0.87 g/cm³ at 25 °C |
| Flash Point | 21 °C (closed cup) |
| Solubility In Water | Reacts with water |
| Vapor Pressure | 10 mmHg at 31 °C |
As an accredited Isobutyl Isocyanate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The packaging for Isobutyl Isocyanate (100 mL) features an amber glass bottle with a sealed screw cap, labeled with hazard warnings. |
| Shipping | Isobutyl Isocyanate should be shipped in tightly sealed, clearly labeled containers made of compatible materials. It must be stored in a cool, dry, well-ventilated area, away from heat, moisture, and incompatible substances. Ensure compliance with applicable hazardous material transport regulations, using appropriate hazard labels and documentation for safe handling and transit. |
| Storage | Isobutyl isocyanate should be stored in a cool, dry, well-ventilated area away from sources of heat, ignition, moisture, and incompatible substances such as acids, alcohols, and amines. Keep the container tightly closed and clearly labeled. Use corrosion-resistant containers and avoid storing under direct sunlight. Employ proper safety measures to prevent inhalation, skin contact, and accidental release. |
Applications of Isobutyl Isocyanate in Industrial ManufacturingIsobutyl Isocyanate serves as a specialized intermediate in several advanced chemical processing industries. Our manufacturing expertise supports critical use cases in pharmaceuticals, agrochemicals, coatings, specialty polymers, and adhesive formulations, meeting stringent sector-specific requirements. 1. Pharmaceutical Intermediate SynthesisPharmaceutical manufacturers use Isobutyl Isocyanate for the production of selective urea derivatives, particularly in the synthesis of certain APIs such as substituted phenylureas and carbamates. It reacts with amines under controlled temperature and moisture-free conditions, ensuring high reaction purity and yield. The process involves batch or semi-continuous addition during final step condensation or amidation to precisely control product quality. Strict traceability and impurity limits apply to ensure suitability for human or veterinary medicines. Industry compliance standards
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2. Agrochemical Active Ingredient SynthesisIsobutyl Isocyanate is used by crop protection manufacturers for the synthesis of urea and carbamate herbicides, insecticides, and fungicides. It facilitates the formation of active moieties through nucleophilic addition to aromatic or aliphatic amines, followed by work-up and crystallization. Formulators value its high reactivity and consistent purity, supporting stringent field efficacy and toxicological requirements for registration and market release. Industry compliance standards
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3. Polyurethane Prepolymer ManufacturingSpecialty polymer producers utilize Isobutyl Isocyanate in the production of prepolymers for thermosetting and thermoplastic polyurethanes. It participates in controlled addition polymerization with polyols or diamines under anhydrous conditions, influencing final elastomer hardness, flexibility, and chemical resistance. Formulation experts manage precise isocyanate index values to achieve target molecular weights and prepolymer structures, allowing for fine-tuned end-use performance in engineering plastics and elastomers. Industry compliance standards
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4. Specialty Coating and Surface Treatment AdditivesIsobutyl Isocyanate is incorporated into high-performance isocyanate-functional crosslinkers for specialty coatings, such as automotive refinishes, protective marine paints, and high-durability wood finishes. It reacts with hydroxy-terminated resins to introduce crosslinkable NCO groups, improving cure speed, chemical resistance, and abrasion resistance. Production adheres to strict VOC emission and handling protocols to ensure operator safety and formulation reproducibility. Industry compliance standards
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5. Adhesive and Sealant Hardener FormulationsFormulators of industrial adhesives and sealants employ Isobutyl Isocyanate to create isocyanate-functional curing agents, controlling open time, bond strength, and resistance to moisture and chemicals. Its use in one- and two-part polyurethane systems enables tailored cure profiles for demanding assembly, flooring, and construction applications. Compliance with technical data controls trace monomer content and residual reactivity for consistent bonding performance. Industry compliance standards
Typical usage ratio
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For decades, our production lines have handled the evolving needs of phosphor, agrochemical, and pharmaceutical industries. One substance that has challenged and refined our skill set is Isobutyl Isocyanate. In our experience, working with its distinctive properties has made us approach production and quality assurance far differently than with generic aliphatic isocyanates. There's a common misconception that isocyanates all perform the same job, but our daily work proves otherwise.
The isocyanate group comes in various forms, yet each one demands its own approach, especially when manufactured for industrial use. Isobutyl Isocyanate, which we produce in pure, colorless liquid form under our in-house model number IBIC-280, requires close temperature control during distillation and storage. Over the years, our laboratory teams have found that small changes in impurity levels or moisture content can dramatically change its reactivity, which has ripple effects for customers relying on consistent end-product performance. We have had to develop cleaning protocols for our reactors and transfer lines that ensure no cross-contamination. Even trace water in the system can set off chain reactions, so we pay careful attention to drying agents, vessel seals, and bulk storage controls. Those details seem small, but neglecting them leads to bigger problems.
Purity drives every order we fulfill. Typical purity for our Isobutyl Isocyanate batches sits at 98.5% or higher as confirmed by gas chromatography. Over time, we have shifted to triple-stage, closed-loop quality control, especially with regulatory agencies tightening their requirements for process transparency and product documentation. Anyone familiar with the workflow in a chemical plant knows that maintaining high purity during scale-up is not as straightforward as it looks on paper. Our operators have watched for years as tweaks in solvent ratios, pressure, or packing materials in the column all shape the final product. It often takes a series of test batches to find the right conditions if the raw material supply has varied. Direct collaboration between our technical staff, shift foremen, and customer QA teams helps us predict potential issues instead of learning from complaints.
In the market, Isobutyl Isocyanate holds a reputation as a unique building block, especially for synthesizing urea and carbamate derivatives. While bulk isocyanates like methyl or ethyl are widely used in foams and coatings, our Isobutyl variant often ends up in more specialized syntheses. Pharmaceutical companies request it for the creation of certain active agents; they depend on its clean, sharp reactivity to form stable ureas that will meet local and international approval for active pharmaceutical ingredients. Agricultural chemists come to us needing it for selective herbicide intermediates, counting on its capacity to form strong, targeted bonds without excessive byproducts. We've observed that substitutions with broader-spectrum isocyanates bring about higher impurity profiles and yield losses—something we see measured on the analytical balance almost every quarter.
Through conversations with regular clients, we’ve learned that running parallel reactions with Isobutyl Isocyanate versus n-butyl or sec-butyl analogs rarely gives the same results. Differences might sound minor—shifts in side-chain branching—but those structural differences alter reactivity, solubility, and even safety handling profiles. Take for example our work with specialty coatings manufacturers: when they trialed direct swaps for isobutyl with alternative butyl isocyanates, they encountered clotting and shelf stability problems they hadn’t accounted for. From the production plant point of view, those lessons reinforce why we avoid the one-size-fits-all mentality and why product substitution, which might appear cost-saving in theory, often backfires.
Our production process starts with carefully sourced raw materials—typically tertiary butanol and phosgene derivatives. Every batch campaign begins with raw material qualification; our staff has seen time and again how minor quality slips—say, a supplier switching distillation columns or using different cleaning agents—can result in unplanned reactivity or yield drops. Plant managers review every new batch of feedstock against established benchmarks before allowing it into process.
The synthesis pathway brings occupational risks few outside this sector truly appreciate. Isobutyl Isocyanate demands respect: we assign only experienced operators to these lines. Control systems monitor temperature and pressure with redundancy. Our senior shift leaders tell new hires about cases in industry where insufficiently trained teams overlooked a stuck valve or missed an early pressure spike—events that can lead to dangerous releases or off-spec material. Consistent investment in both equipment and training forms the backbone of our reliability here. Over the years, we have developed internal audit checklists and weekly process reviews into our routine, knowing that even a rare deviation poses long-term consequences not just for us but for the partners who build intricate chemical syntheses around our product.
More than once, we've caught shifts in minor impurity content just as tanks were being filled for shipment. It saved weeks of reprocessing for both us and our downstream customers. Ongoing investments in process analytics—real-time chromatographs, moisture probes, in-line IR readers—pay dividends in both time and trust. Effective technical feedback channels run in both directions. Several customers give us residue specs, color stability data, or even vapor pressure measurements based on their unique application. This open exchange allows us to continuously refine production and jointly troubleshoot. Some might say these are common sense practices, but with heightened regulatory oversight and ever-tighter customer specs, relying on customs from the last decade just doesn't cut it anymore.
We supply Isobutyl Isocyanate with a standard purity of 98.5% or higher GC, a moisture content below 0.2%, and acid equivalents under 0.01%. Packing choices—lined steel drums, IBCs, or custom tankers—reflect end-user requirements, but always with vapor-tight seals and clear lot traceability. Over years of running pilot and commercial lots, our experience shows that varying packaging protocols for climates, transport modes, or storage length plays a role in minimizing degradation or vapor losses. Shipping coordination isn’t an afterthought. Our logistics staff balance environmental controls with transit speed and full regulatory documentation, so bottlenecks at customs or on-site acceptance are avoided.
From a manufacturing perspective, Isobutyl Isocyanate has its quirks. Its pronounced, pungent odor and high reactivity toward water make odor and fume containment a significant concern. We invested heavily in negative-pressure filling stations and compatible PPE not merely because regulations demand it but because standard plant ventilation or splash barriers haven't sufficed. We've seen what happens when assumptions about isocyanate volatility create health or quality incidents—the manufacturing floor remembers those lessons much longer than anyone.
Our clients most frequently use Isobutyl Isocyanate for synthesizing urea and carbamate functional groups—substances found in specialty pesticides and fine chemicals. Below the surface, though, are nuances we’ve encountered in technical support calls and batch troubleshooting. Some users scale up lab syntheses based on literature, only to find that their pilot plant runs behave unpredictably with commercial Isobutyl Isocyanate. Variability is often traced not to the active group but to minor impurities, storage absorbed moisture, or blend volatility—details learned from hundreds of conversations with plant engineers and laboratory scientists. We started offering optional pre-purification and sampling services to remove much of this variability. It tightened trust and improved supply timelines. We’ve also learned to be transparent about drift in storage and shipping, openly communicating about shelf life and degradation potential; old stock rarely performs like fresh, something overlooked until unexpected failures cost time and money.
The distinguishing feature here isn’t just in the laboratory metric or the MSDS sheet. Our approach is collaborative, built on years of iterative problem-solving and open technical dialogue. Not every batch of Isobutyl Isocyanate is destined for the same chemical route, but the shared thread runs through consistent reactivity and predictable side-product profiles. Pharmaceutical and agrochemical partners alike benefit from the freedom this brings—they can push syntheses with confidence, knowing the building block won't spring performance surprises midway through a campaign.
For many teams, especially in smaller specialty firms or research start-ups, buying high-purity Isobutyl Isocyanate from the manufacturer brings peace of mind along with cost savings. This is not a commodity market for most users; bulk handlers have tried substituting other isocyanates, only to find that downstream purification or product dropouts balloon, wiping out any "savings." A number of our longstanding clients have shared their data sets with us. Their impurity profiles, yield numbers, and sometimes even anecdotal process notes provide invaluable feedback, which we relay back into process improvements. Few outside of field operations appreciate the real difficulties posed by a tank of product with off-spec residuals—failed reactions, poor toxicological performance, or lost certification for pharmaceutical product lines. Each one of these issues leaves a mark on both supplier and customer.
Distinct from methyl or hexyl analogs, Isobutyl Isocyanate brings a balance of volatility and specificity that lets chemists reach outcomes no simple swap could. During larger campaigns, our technical service teams have analyzed reaction profiles for customers using methyl and ethyl isocyanates in parallel. Chemical differences in the isobutyl group mean certain carbamates exhibit improved storage stability or make downstream purification more straightforward. These real gains aren’t obvious from a glance at a reagent chart. Over the long run, they show up as increased product reliability and less rework on the customer’s end.
We have fielded questions—often in real time—when a batch is slow to react, or unexpected residues appear in the distillation line. Drawing from our logbooks, samples, and archive of GC runs, we give not just an answer but the practical workaround. In dozens of such cases, a rapid response and a replacement batch solve a costly shutdown before it snowballs. Our staff know that those moments build longer-term partnerships; they’re why both technical and purchasing departments look to the manufacturer, not just the catalogue or local broker.
Indeed, handling a reactive molecule like Isobutyl Isocyanate brings challenges: regulatory scrutiny, transport constraints, and the need for reliable storability. We have responded by investing not only in the obvious—modernized reactors and high-purity pathways—but also in systems for full material tracking and transparent data logging. Our in-house analytics department regularly updates its calibration protocols and publishes impurity panel results, which are provided directly with every shipment. Unlike a trading office or a forwarding agent, we see the whole lifecycle from cleaning the raw feed tank to loading the final drum. This end-to-end view gives our customers advantages they can't replicate with a less direct supply chain.
The chemical manufacturing world isn’t static. Regulatory changes, new hazard assessments, environmental pressures, and customer innovation cycles create a moving landscape. A decade ago, storage protocols looked different in our own plant—today, we’ve upgraded air management, doubled blower capacity on recovery systems, and retrained all handlers with updated process scenarios. Minor lapses in documentation or training create the kind of exposure that hurts both business and reputation. We've learned—sometimes the hard way—that reacting to issues with system improvements, not after-the-fact fixes, makes a difference both in product consistency and worker safety.
On more than one occasion, we’ve worked hand-in-hand with risk managers from client firms, walking through both sites to compare notes on vapor control, emergency response, and long-term storage. Sharing these learnings doesn’t just reduce incident frequency—it improves common understanding and process design. Outsourcing chemical risk or treating it as a side issue is not a realistic option. Every element—down to the kind of gaskets used in tanker connections—is field-tested by our team before it leaves the lot.
A direct relationship between manufacturer and user brings advantages that extend beyond price or lead time. For products as technically exacting as Isobutyl Isocyanate, customers value both the guarantee of high-quality supply and the manufacturer’s willingness to solve problems in real time. Our experience demonstrates that shipping a full documentation pack, including COAs, batch traceability, and storage guidelines, cuts confusion before a drum ever reaches your warehouse.
There have been cases in the past where improper storage—either at a port, during customs inspection, or at the customer site—led to measurable degradation, with all the headaches that follow. Our technical support works alongside client process teams to identify critical control points, sharing insight from near-miss cases or incident investigations. We see this as a two-way street: where customers proactively test incoming batches and share their findings, it helps root out potential inconsistencies before they affect operations.
We also pursue continuous improvement in logistics and documentation. Every shipment of Isobutyl Isocyanate is supported by up-to-date transport labeling, safety guidelines, and shelf-life recommendations, which are reviewed after shipment and corrected should deviations occur. This is not just about compliance; it’s about making sure material quality holds up from our pumps to your tank and beyond.
Given the hazards associated with isocyanates, our internal safety teams go beyond legal minimums. We routinely conduct exposure testing and staff feedback sessions. In our own operations, we have learned that shortcutting on fume hoods, PPE, or decontamination authorizations results in higher downtime and more near misses. Our plant operators take pride in leading some of these safety briefings for customer visits—a point of satisfaction that goes beyond paper compliance.
Looking at our internal data trends and benchmarking against industry averages, we see that investment in preventive maintenance and early technician intervention reduces both incident frequency and loss-per-incident metrics compared to regional averages. Over time, continuous improvement has shifted from a slogan to a practical, data-based feedback cycle. Our most experienced team members often become in-house experts in storage advice and product troubleshooting for customers far afield.
Access to a direct manufacturing source for Isobutyl Isocyanate means more than just buying a chemical. Our team understands first-hand how downstream applications—whether in intermediates for pharmaceuticals, pesticides, or specialty chemicals—depend on consistent batch quality and rapid turnaround for technical issues. Our facility invests in process improvements not at arm’s length, but with staff who engage personally in every audit, every incident review, and every improvement cycle.
Sourcing directly from an experienced chemical manufacturer ensures access to deeper product knowledge, workflow insights, and a support structure equipped to meet both urgent technical challenges and changing regulatory demands. For those who build complex syntheses, quality assurance does not end with a simple purity figure: it extends to understanding the context, the expectations, and the real-life chemical logic behind every specification.
As the landscape of chemical synthesis grows, and as requirements for traceability, documentation, and product integrity intensify, we continue to see Isobutyl Isocyanate as both a challenge and a calling card for our in-plant capabilities. From the intricacies of vapor handling to sharing real-world safety lessons, the substance is never just a product—it is the sum of every lesson learned on the shop floor, every analysis reviewed, and every outcome discussed in partnership with the user.
Over the decades, our technical and production teams have shaped Isobutyl Isocyanate into more than a formula on a spec sheet. Knowledge, collaboration, and the practical demands of daily manufacturing bring every batch to life, setting a standard that reaches well beyond the drum.