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HS Code |
754568 |
| Iupac Name | Cycloheptene |
| Molecular Formula | C7H12 |
| Molar Mass | 96.17 g/mol |
| Appearance | Colorless liquid |
| Odor | Sweet, pleasant odor |
| Boiling Point | 116-117 °C |
| Melting Point | -110 °C |
| Density | 0.857 g/cm³ |
| Refractive Index | 1.455 |
| Solubility In Water | Insoluble |
| Flash Point | 17 °C |
| Cas Number | 628-92-2 |
As an accredited Cycloheptene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Amber glass bottle, 500 mL, with screw cap; clearly labeled "Cycloheptene," hazard symbols, batch number, and manufacturer information. |
| Shipping | Cycloheptene should be shipped in tightly sealed containers, away from heat, sparks, and open flames due to its flammability. It must be transported in accordance with local and international regulations for hazardous chemicals, specifically under the “flammable liquid” classification. Ensure proper labeling and provide safety documentation during transit. |
| Storage | Cycloheptene should be stored in a cool, dry, and well-ventilated area away from heat, sparks, open flames, and sources of ignition. Keep the container tightly closed and protect it from direct sunlight. Store separately from oxidizing agents, acids, and bases. Use approved containers made of compatible materials and follow local regulations for storage of flammable liquids. |
Applications of Cycloheptene in Industrial ManufacturingCycloheptene serves as a key intermediate in select industrial sectors where its unique seven-membered ring structure brings advantages to specific molecular synthesis and polymer modification processes. We supply cycloheptene to global manufacturing partners seeking reliability and consistency for their end products. Below we present focused application scenarios, reflecting live downstream usage supported by industry-recognized standards and process details. 1. Pharmaceutical Intermediate SynthesisLeading pharmaceutical companies use cycloheptene to construct complex ring systems essential for the synthesis of certain antihypertensive agents and CNS-active compounds. Its reactivity in selective hydrogenation and cycloaddition steps supports production efficiency while meeting the purity demands of regulated pharmaceutical APIs. Industry compliance standards
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2. Specialty Polymer ModificationCycloheptene is utilized by advanced polymer manufacturers in the controlled production of polynorbornene-type elastomers and specialty copolymers through ring-opening metathesis polymerization (ROMP). It imparts distinctive mechanical properties and flexibility to products designed for demanding automotive and engineering applications. Industry compliance standards
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3. Fine Chemical Building Block for Fragrance SynthesisManufacturers in the aroma chemicals sector employ cycloheptene for constructing cyclic ketones and alcohols, which play pivotal roles as odorant bases and aroma enhancers in perfumery. The molecule provides a backbone for steps such as Baeyer–Villiger oxidation to synthesize musky fragrance ingredients found in luxury formulations. Industry compliance standards
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4. Cycloalkene Derivatives for Agrochemical R&DAgrochemical research and development teams value cycloheptene as an intermediate for synthesizing novel crop protection agents including select cycloalkene-based herbicide and insecticide candidates. The compound’s structure supports targeted SAR modification in lead compound exploration for enhanced pest specificity. Industry compliance standards
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5. Functionalization Precursor in Surface Coating AdditivesAdvanced coatings formulators incorporate cycloheptene as a precursor in the synthesis of reactive diluents and cyclic crosslinkers for high-performance resins. Its contribution to the final network structure allows the development of resins and films with enhanced weather resistance and flexibility, especially in protective automotive and aerospace coatings. Industry compliance standards
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At our manufacturing facility, we focus every stage of Cycloheptene production on consistency, chemical purity, and traceability. Cycloheptene belongs to the family of cycloalkenes, with a unique seven-membered ring and a single double bond. Its structure gives it reactivity distinct from smaller and larger cycloalkenes. We have seen this in distillation runs and QC sample analyses. Even a small deviation in composition or isomer ratio changes downstream results dramatically, especially in applications that call for precision organics.
Every batch rolling out from our reactors comes from carefully sourced raw materials. We use a cyclization process that limits side-product formation. Our team verifies each step through GC and NMR to make sure the material is not only pure but exhibits the expected chemical behavior. The physical appearance is a clear, colorless to slightly yellowish liquid. The faint sweetish odor is characteristic, and the compound is much less volatile than smaller cycloalkenes, which becomes clear during handling in our process bays.
Production often focuses on reliability, and with Cycloheptene we enforce rigid internal guidelines. Samples consistently show a purity above 98% by GC, and water content remains below 0.05%, which matters greatly to our customers using the material for synthetically sensitive reactions. Impurities like peroxides, which tend to build up in unsaturated hydrocarbons, are controlled through dedicated storage and antioxidant additions. Each drum or bottle is nitrogen blanketed, packed in HDPE containers designed to resist chemical swelling.
Physical properties reported from our facilities: boiling point measured at approximately 118 °C, density near 0.85 g/mL, and refractive index of 1.475 at 20 °C. These numbers help chemists in downstream labs run reaction setup and separation protocols with predictability. We provide batch-specific certificates that trace back to source documents and analytical charts, a practice aimed at meeting accreditation needs for both our domestic and international clients.
Cycloheptene finds its way into a broad selection of synthesis tracks in fine chemical and pharmaceutical industries. Its seven-membered ring is a building block in making specialty intermediates. In our discussions with research partners, demand often focuses on its role in ring-contraction and -expansion methodologies or as a template for complex molecular architectures. Unlike cyclohexene, which readily undergoes certain types of addition, the ring tension and bond angles in cycloheptene drive selectivity in oxidation and functionalization that are hard to reproduce with other cycloalkenes.
In pilot scale-up scenarios, users report less tendency for the material to form unwanted polymeric residues under moderate heat. This leads to cleaner reactors with fewer shutdowns. In catalytic hydrogenation, the distinct reactivity profile means users obtain straight-chain heptane derivatives under softer conditions compared to octene or cyclooctene, which require higher catalyst loading or harsher conditions. Clients working in the field of natural product modification refer to cycloheptene as a workhorse for macrocycle installation. The compound’s manipulation in our pilot labs shows that, compared with cyclooctene, cycloheptene avoids side reactions in metathesis or metal-catalyzed rearrangements.
One question sometimes comes up: why not use cyclohexene or cyclooctene? The answer is rooted in subtle, real-world differences that matter when scaling synthesis or developing advanced materials. In our hands, cyclohexene is much more reactive in standard bromination or oxidation processes, sometimes overshooting the desired transformation. Larger rings like cyclooctene absorb energy differently during activation steps, often making selectivity control a bigger challenge. Cycloheptene sits in a sweet spot. Its intermediate ring size provides enough ring strain to accelerate certain reactions, while limiting overreaction and reducing unwanted side product formation.
Many molecules derived from cycloheptene are tough to get with other cycloalkenes. In olefin metathesis, for example, we've documented more predictable product profiles and easier catalyst recovery due to the ring’s conformational flexibility. Even in academic settings, supplies of cycloheptene that fail to meet strict specifications lead to inconsistent research outcomes. By controlling each stage of our process, from purification to packaging and distribution, we see downstream variability drop sharply, according to feedback from synthetic chemists and QC labs alike.
Our responsibility does not stop at producing high-purity chemicals. Safe handling requires both technical knowledge and practical measures. Cycloheptene, like many unsaturated hydrocarbons, is flammable and can form explosive mixtures in air. Our storage facilities use sealed, ventilated rooms with continuous monitoring for vapor buildup. Staff receive regular training, and work under well-established SOPs developed from industry guidelines and our own incident reports. No shortcuts are taken here—our own experience with minor leaks years ago prompted the installation of redundant vapor detectors.
Waste management is equally crucial. We run all waste solvent streams through a dedicated recovery process, so unreacted cycloheptene is isolated and recycled when feasible. Our environmental team tracks emissions and operates treatment systems to keep VOC releases below regulatory limits. Partner feedback during audits points to our transparent records and rapid incident reporting as strengths. Internal drills and maintenance logs help keep every member of our team prepared for unlikely emergencies.
We maintain complete traceability for every batch. Source documentation follows ISO-accredited procedures. The focus here is not just about regulatory or customer pressure; batch identity and consistency underpin quality at every level. We always share SAP batch numbers, retention samples, and detailed COAs with customers. Whether researchers or end-users want supporting analytical data, our technical support team provides raw chromatograms, spectra, and as much detail as needed for regulatory submissions.
Supply chain challenges have been prominent in the past few years. Availability of key precursors sometimes fluctuates, impacting scheduling on our reactors. To address these realities, our purchasing division builds strong relationships with several feedstock suppliers. Real-time monitoring of international markets allows our production planning team to adjust schedules, avoid bottlenecks, and maintain stock of high-purity cycloheptene ready for dispatch. We have invested in backup lines and in-house blending facilities to smooth out inconsistencies in incoming streams, ensuring the final product quality never wavers.
We strive to keep our environmental footprint low. The manufacturing route we use minimizes energy-intensive steps. Reaction temperatures are optimized by deploying modern catalysts that drop the required activation barrier, limiting off-gas formation and unnecessary by-products. Recovered process solvents are fed back into our own systems, and all off-spec material gets rerouted, not dumped.
We recognize that regulatory heats up with each passing year. Compliance on REACH, TSCA, and GHS labeling is verified down to the details on every outgoing drum or bottle. Where customers demand sustainable sourcing certifications, our documentation has withstood third-party audits, something we regard as a reflection of our operations, not just paperwork. Investing in process improvements, from energy meters on reactors to solvent recycling units, lowers cost and reduces emissions—objectives that benefit both our environment and customer base.
Our technical consulting group partners with chemists on synthetic design. Working through target molecule retrosynthesis, we've noticed that cycloheptene often shines when engineers seek to achieve efficient one-pot transformations. Our materials come in scalable pack sizes, from research-grade aliquots to multi-ton lots destined for full-scale production. Customers operating kilo-labs or pilot plants rely on tight delivery windows and product that performs the same, batch after batch; these standards do not bend.
We run joint method development sessions with larger clients who wish to integrate cycloheptene into automated dosing or continuous production. Certain pharmaceutical intermediates benefit from its robust ring system, which proves less prone to rearrangement than six- or eight-membered alternatives, based on direct side-by-side testing in partnered facilities.
Occasionally, our staff visits customer sites to oversee startup procedures or troubleshoot technical inconsistencies. During these collaborations, feedback from plant operators and chemists often spurs R&D back home—such as refining storage stability protocols that now extend shelf life for some applications. These ongoing conversations drive innovation on small but crucial process improvements, which is how incremental gains turn into real-world value for our users.
Cycloheptene does not tolerate prolonged exposure to air, light, or high temperatures. Its double bond can slowly oxidize, forming peroxides if left unprotected, which can create safety hazards. To address this, our plant warehouses all product under an inert nitrogen blanket, and shipments travel only in sealed, UV-proof containers. These measures prevent spoilage and maintain the integrity of physical and chemical properties until the product arrives at a customer’s dock.
Despite our efforts, supply chain interruptions sometimes occur. Weather events, labor disputes at international ports, or transportation network disruptions can impact delivery timelines. Our logistics team works tirelessly to reroute freight or choose alternative carriers, communicating openly with customers if delays seem likely. Emergency inventory stocks, stored at secured third-party depots, give us a buffer against the most severe disruptions. Through real-time shipment tracking, customers receive regular updates on their orders.
The work does not end once the product leaves our facility. Technical feedback from field users, whether a university researcher or an industrial plant operator running high-throughput systems, shapes our internal standards and R&D priorities. Recent feedback highlighted a batch displaying trace peroxide, which might have occurred in transit. After an in-depth root cause analysis, we enhanced our antioxidant dosing at the packaging stage and strengthened customer-side recommendations for safe storage. Openness about occasional snags helps build trust; no facility in specialty chemicals is immune to supply challenges or quality control slip-ups.
We also support application development, advising on safe scale-up of cycloheptene-involved processes. Customers often discover that minor tweaks—such as replacing a generic solvent with a specifically dried grade—can improve consistency and yield, as long as the reagent quality is uncompromised. In return for supplying market-ready material, we gain valuable insight into application trends, which helps keep our plant and R&D in step with the pace of modern chemistry.
Our chemists continuously seek out improvements in process efficiency and product usability. Current R&D focus includes greener production methods, catalysts that further reduce the need for harsh reagents, and storage aids extending shelf life. An internal project is underway to increase product recovery rates on existing lines, using advanced separation technology piloted in collaboration with a local engineering faculty.
Keeping pace with new regulatory expectations, we maintain regular dialogue with environmental experts to anticipate any changes in chemical labeling or permitted exposure limits. The intersection of safety, quality, and sustainability challenges us to maintain agility in both process and plant operations. Such internal pressure never lets complacency creep in, particularly as customers demand more transparency and reliability from their raw material suppliers.
Every stage of producing and delivering cycloheptene involves hands-on attention—starting with qualified feedstocks, ongoing process adjustment, and finishing with detailed inspections and record-keeping. We approach these tasks with the understanding that mistakes in specialty chemicals resonate downstream, affecting not just one product line but entire projects in pharmaceuticals, flavor, fragrance, and advanced materials. Over the years, we have learned from both successes and set-backs that shared accountability does more to build partnerships than any contract clause or one-off discount.
Cycloheptene’s value depends on its context. In the lab, it serves as an enabling tool for reaction development or biomimetic synthesis. In pilot or production, the same purity and consistency prevent process headaches and regulatory complications. The expertise developed through close attention to every detail in our factory has earned us strong long-term relationships with R&D groups across the world. Our experience informs steady improvement and lets us deliver a product that meets not only technical but also user-driven expectations.
Producing reliable cycloheptene is about more than conversion in a reactor—it requires high standards, open collaboration, and adaptability to each new challenge. We blend the rigor of analytical chemistry, the lessons of past incidents, and everyday feedback from the field to develop a material our partners rely on. In the years ahead, we will keep driving quality forward, based on facts, experience, and honest dialogue with our customers. Cycloheptene is more than a building block: in the right hands, and made under the right conditions, it opens up new directions for science and technology across the globe.