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HS Code |
461496 |
| Chemical Name | 3-Chloro-2-Methylpropene |
| Cas Number | 563-47-3 |
| Molecular Formula | C4H7Cl |
| Molecular Weight | 90.55 g/mol |
| Appearance | Colorless to pale yellow liquid |
| Boiling Point | 69-71 °C |
| Melting Point | -120 °C |
| Density | 0.909 g/mL at 25 °C |
| Refractive Index | 1.415-1.418 |
| Flash Point | -17 °C (closed cup) |
| Solubility In Water | Insoluble |
| Vapor Pressure | 172 mmHg at 25 °C |
| Odor | Sharp, irritating |
| Synonyms | Isoprenyl chloride |
| Un Number | UN 3271 |
As an accredited 3-Chloro-2-Methylpropene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | A 500 mL amber glass bottle labeled “3-Chloro-2-Methylpropene,” featuring hazard symbols, chemical details, and secure tamper-evident screw cap. |
| Shipping | 3-Chloro-2-Methylpropene is shipped as a hazardous chemical and must be handled with care. It should be transported in tightly sealed, corrosion-resistant containers, clearly labeled, and in compliance with local and international regulations. Shipments should be accompanied by safety documentation, and precautions must be taken to avoid heat, open flames, and incompatible substances. |
| Storage | 3-Chloro-2-methylpropene should be stored in a cool, dry, well-ventilated area, away from heat, sparks, open flames, and incompatible materials such as strong oxidizers. Keep the container tightly closed and properly labeled. Store away from direct sunlight and sources of ignition. Use explosion-proof electrical equipment and ensure that storage areas have proper secondary containment to prevent leaks or spills. |
Applications of 3-Chloro-2-Methylpropene in Industrial ManufacturingAs a direct manufacturer of 3-Chloro-2-Methylpropene, we serve global B2B markets by supplying this specialty intermediate to industries where it demonstrates unique and irreplaceable reactivity. Our technical and regulatory teams support the chemical’s application in processes demanding high reliability and consistent compliance. Below, we highlight core downstream scenarios that rely on genuine industrial adoption, providing key parameters for compliant, efficient use. 1. Pharmaceutical Intermediate Synthesis for Active Pharmaceutical IngredientsMajor pharmaceutical companies depend on this intermediate as a building block in manufacturing select active pharmaceutical ingredients (APIs), especially those requiring a chloroalkene framework in their molecular design. Pharmaceutical process engineers integrate the material into alkylation and acylation reactions to construct advanced intermediates for small-molecule drugs, targeting specific therapeutic classes. Industry compliance standards
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2. Agrochemical Intermediate in Herbicide and Fungicide ManufacturingAgrochemical producers utilize this compound within specific reaction sequences for synthesis of highly selective herbicides and fungicides, where the chlorinated isoprene motif confers resistance traits and bioactive properties for crop protection agents. Industry compliance standards
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3. Monomer and Crosslinker in Specialty Polymer & Resin ProductionLeading manufacturers of specialized resins and performance polymers use this chlorinated alkene as a reactive monomer or crosslinking agent. Its use enhances chemical resistance, adhesion, and durability in advanced resin systems—including adhesives, protective coatings, and elastomer blends designed for harsh chemical service environments. Industry compliance standards
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4. Fine Chemical Intermediate for Fragrance and Flavor SynthesisManufacturers in the fine and specialty chemical sector employ our product as a tailored intermediate in the construction of terpene-based fragrance and flavor molecules. The structure enables downstream synthesis of target additives through selective hydrohalogenation and further derivatization, delivering unique aromatic properties required by the fragrance and food flavoring industry. Industry compliance standards
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5. Intermediate for Quaternary Ammonium Compound ProductionProducers of industrial biocides, textile antimicrobial agents, and personal care preservatives apply this raw material in their synthesis routes for select quaternary ammonium compounds. These C4 chain quats require a chloroalkene fragment for subsequent quaternization, imparting high antimicrobial performance for demanding application segments. Industry compliance standards
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At our plant, the story of 3-Chloro-2-Methylpropene is one that’s told every day through the hands-on work of our teams and the ever-present hum of our reactors. Often known in the industry by its CAS number 563-47-3, this compound has earned its place in the chemical sector for good reason. Its structure — a chlorinated allylic compound — brings together reactivity and selectivity. We have seen its value time and again across different applications where both of these traits matter.
Our 3-Chloro-2-Methylpropene process builds on years of refining and tweaking. We don’t just pour raw materials in and hope for the best; we monitor every batch, track conversion efficiency, and keep an eye on byproducts. With a molecular formula of C4H7Cl, its physical form appears as a clear, colorless liquid, with a sharp odor noticeable even at low concentrations. Boiling at around 67—68°C offers manageable handling while keeping volatility in check, as long as storage remains secure and properly vented.
Packing and shipment see a routine of steel drums, lined with protective coatings to avoid interaction with the contents, especially since allylic chlorides can challenge most metals. We maintain rigorous filling line cleaning schedules and instrument checks to minimize chances of cross-contamination, a lesson learned in the past after a single day’s missed calibration threw a shipment out of spec.
Every pallet we send out carries potential beyond factory gates. Most of the volume we produce heads into fine chemical synthesis. In hands of skilled chemists, it acts as a key building block for pharmaceutical intermediates and advanced agrochemicals. Through allylation reactions, customers produce a tapestry of higher-value materials. Laboratories appreciate the high reactivity of the terminal double bond, combined with the electrophilic character of the chlorinated group, to run alkylation reactions under milder conditions than many alternatives.
We know that some of our long-term partners rely on 3-Chloro-2-Methylpropene for production of agricultural actives, especially where tailored chlorine substitutions confer pest resistance without adding unnecessary weight, cost, or chemical burden to the final product. As an intermediate for syntheses such as those leading to aliphatic amines, the compound shows how nuanced a seemingly simple molecule can become under the right conditions. Hard-won feedback from these customers continually informs our production priorities and stability checks.
Our position as manufacturer brings us close to the material, past the point of lab curiosity and deep into commercial reliability. Consistency here is not abstract. From the choice of catalysts — where small tweaks can double the lifetime of a reactor load — to the filtration steps, our crews see the way each variable shapes final characteristics. Not all suppliers approach this detail; we do because failed reactions downstream reflect right back on us.
Much is said about alternative allyl chlorides: plain allyl chloride, or related alkene derivatives like methallyl chloride. We run comparative synthesis in-house, matching reactivity and side-product ratios for each alternative. Every time, 3-Chloro-2-Methylpropene stands out for its consistent selectivity in applications needing methyl group substitution adjacent to the allyl position. It opens up routes that simple allyl chloride can’t reach, thanks to the reduced likelihood of rearrangement and cleaner conversion profiles. Our production teams can count the reduction in off-gassing and chlorinated byproducts when using our 3-Chloro-2-Methylpropene, lessons learned from countless pilot batches and painstaking cleanups.
Every finished drum we ship has seen thorough inspection on several fronts. Years ago, a batch short on purity left one of our partners with unexpected yield losses and residue issues in their synthesis reactor. That mistake stuck with us. Since then, we direct every batch through gas chromatography and spectroscopic checks, not just one or two on a schedule. Plant-floor teams know the consequences of missing a peak impurity, and carry responsibility throughout each stage. Our current average purity routinely exceeds 99%, not an arbitrary figure but one confirmed by a string of independent assays. We keep sulfur, water, and high-boiling residues within tight limits, because those can cripple downstream catalysis or clog finely-tuned lines in end-user equipment.
Working with 3-Chloro-2-Methylpropene, our operators practice vigilance beyond standard protocols. We learned early that this compound evaporates readily in open air; even short exposure can cause throat and nasal discomfort. Respiratory protection gear gets checked before every shift. Flammability risk remains real, especially near transfer points where unexpected static or minor leaks can lead to ignition. Regular spot drills and reviews of spill containment have minimized incidents, but we never dial back on these measures.
Container selection happened after repeated corrosion tests; we moved away from ordinary metal drums after detecting pinhole leaks from hydrolysis-generated HCl inside the lid areas. This change extended shelf life and minimized customer complaints. Training every new hire on these risks leads to a safety culture grounded in shared responsibility, not just compliance paperwork.
Customers often approach us with questions, not only about purity or shipment speed, but about performance relative to other similar compounds. In one case, a major client replaced allyl chloride with 3-Chloro-2-Methylpropene on a production line making acrylic resin precursors. Their goal: to boost final polymer properties at reduced process temperatures. After comparative trials spanning over three months, they documented better control of molecular weight, cleaner end groups, and less fouling of their reactors. These gains only materialized with reliable 3-Chloro-2-Methylpropene input, underlining how molecular differences translate into pounds of product or lost time.
The unique value of the methyl group on the backbone can matter even more in pharmaceutical routes. Where regioselectivity and minimal side reactions mean everything, chemists need an allylic chloride that directs their synthesis rather than complicating it. Each lot we produce sees checks for isomeric or di-chlorinated contaminants, tiny at scale but magnified by complexity downstream. Through customer feedback, we gather new routes and learn which byproducts cause headaches on other lines, shaping weekly batch reviews.
Sequence reliability drives purchasing here more than price spikes or spot deals. Past supply issues for other raw materials taught us how badly a broken link affects not just one factory, but every plant relying on intermediates. By keeping raw material sourcing local where feasible, and holding buffer inventory above the industry average, we protect our production continuity all year. This stability keeps our partners’ lines running without sudden lags or rationing.
We’ve invested in long-term supplier relationships instead of chasing the lowest figure per ton. This strategy built in redundancy and ensured that, during blips in the global supply chain, nobody calling our office had to hear “out of stock.” Reliability requires more than a warehouse full of product; it’s embedded in the relationships and onsite controls that minimize rework or off-grade batches.
Continuous improvement isn’t optional on our site; our experience shows that advances come only from trying, auditing, and learning. We’ve reduced wash wastes by batch-wise improvement of water-chloride trapping apparatus, driven by environmental commitments that hold us to high standards. Every year brings new tweaks to minimize adventitious polymerization or catch micro-residues that slip past earlier filtration.
We also monitor regulatory updates closely. Allylic chlorides draw scrutiny due to volatility and workplace exposure concerns. Investing in vapor extraction and capture, rather than just open-air venting, limits emissions and sets benchmarks our neighbors have noticed. Prospective customers often visit, drawn by stories of these improvements and seeking to replicate them at their own sites. For years, that openness has worked in our favor, converting cautious samples into repeat business from firms who care as much as we do about environmental exposures and compliance records.
A collaborative attitude runs through our technical team. We view ourselves as more than just commodity handlers. When a client introduces a new project, we support them with small-run trials and tailored impurity profiles. More than once, those side-by-side experiments revealed minor impurities in finished product—a lesson that has sent us back to adjust process variables or add another finishing step, even if only for a small order. Results flow directly into our main plant, benefitting all subsequent clients with cleaner, more reliable product.
In one story that stands out, a partner developing UV-cured coatings needed a version with exceptionally low residue. They shared their downstream analysis, flagging minute issues with haze and odor generation. Our technicians adjusted fractional distillation cut points, trading a few points on recovery rate for a notable decrease in heavy-end impurities. That breakthrough led us to a deeper understanding of how small tweaks could tailor our product more tightly to specific segments—reminding every part of our operation that careful listening pays off in both relationships and sales.
No plant operator or supervisor at our facility talks of commodities as background noise. Every drum, tote, or bulk tank of 3-Chloro-2-Methylpropene carries the effort of skilled hands, checked instruments, and lessons learned from both mishaps and successes. This compound rewards attention to detail, from starter charge to reactor drain, promising high value where users need speed and selectivity in their synthetic chemistry.
We have watched industries evolve, with new regulations and market directions driving constant change. Through it all, experience has reinforced which products stand the test of time: those that deliver not just in the datasheet, but under real-world pressures. 3-Chloro-2-Methylpropene earns its keep by bringing predictable outcomes to complex syntheses and by allowing our partners to innovate with confidence.
Driven by long-term experience, diligent process control, and a readiness to learn from every lot, our operation remains committed to providing not just a molecule, but a genuinely dependable link in our customers’ supply chain. Every improvement, every adjustment, serves the end goal: making sure that the 3-Chloro-2-Methylpropene leaving our gates consistently meets the needs, ambitions, and quality targets of real-world chemical manufacturing.
