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HS Code |
950639 |
| Name | C5 Fraction |
| Chemical Family | Petroleum Hydrocarbon |
| Carbon Range | C5 |
| Boiling Point Range Celsius | 30-60 |
| Appearance | Colorless to pale yellow liquid |
| Odor | Petroleum-like |
| Density G Per Ml | 0.63-0.69 |
| Flash Point Celsius | <-30 |
| Solubility In Water | Insoluble |
| Primary Components | Iso-pentane, n-pentane, cyclopentane, pentenes |
| Application | Feedstock for chemical synthesis |
| Vapor Pressure Kpa 20c | ≥ 60 |
| Flammability | Highly flammable |
| Cas Number | 68476-55-1 |
As an accredited C5 Fraction factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | A 200-liter steel drum labeled "C5 Fraction," featuring hazard warnings, chemical identity, and batch information printed on the exterior. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL) for C5 Fraction involves shipping the chemical in a 20-foot container, typically using ISO tank or drums. |
| Shipping | C5 Fraction should be shipped in tightly sealed, appropriately labeled drums, ISO tanks, or bulk containers, in compliance with regulatory and safety guidelines. It must be stored away from heat, sparks, and open flames, and transported as a flammable liquid under ADR/IMDG/IATA regulations, with proper documentation and hazard labeling. |
| Storage | C5 Fraction should be stored in tightly closed, labeled containers in a cool, well-ventilated area away from heat, sparks, open flames, and direct sunlight. The storage area should be equipped with proper grounding to prevent static discharge. Keep away from incompatible materials such as oxidizers. Ensure all equipment is explosion-proof and check periodically for leaks. Suitable for tank or drum storage. |
| Shelf Life | The shelf life of C5 Fraction is typically 6-12 months when stored in tightly sealed containers under cool, dry conditions. |
Applications of C5 Fraction in Industrial ManufacturingC5 Fraction, sourced from naphtha cracking in our proprietary units, serves as a foundational hydrocarbon feedstock across several key manufacturing sectors. The following sections detail distinct downstream applications, specifying regulatory frameworks, mix formulations, process integration points, and types of end products. 1. Adhesive and Tackifier ProductionC5 streams play a critical role in manufacturing hydrocarbon resins for adhesives. Our fraction supplies the necessary pentadiene and cyclic olefin components to produce diene-based tackifying resins. These resins give pressure-sensitive, hot-melt, and solvent-based adhesives the required balance of tack, cohesion, and flexibility required by packaging, automotive assembly, and labeling industries. Our technical grade meets stringent impurity controls to support high resin color, thermal stability, and lack of odor in end use. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
2. Solvent Manufacturing for Industrial Cleaning AgentsC5 Fraction provides iso-pentane, cyclopentene, and other aliphatic hydrocarbons used in the formulation of fast-evaporating, low-aromatic solvents. End users require precise boiling ranges and minimal residue content for applications in electronics, metal degreasing, and specialty cleaning fluids. Our in-house distillation delivers required purity profiles, minimizing risk of cross-contamination in critical downstream applications. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
3. Rubber Synthesis in Automotive and Consumer GoodsOur C5 stream supplies isoprene and piperylene, critical monomers for elastomer and synthetic rubber production. Manufacturers seek this feedstock for blending with butadiene or styrene to impart specific mechanical properties, such as enhanced low-temperature flexibility, abrasion resistance, and processability in tires, hoses, and shoe soles. We ensure tight monomer ratio tolerances and strict hydrocarbon speciation, reducing process upsets in continuous polymerizations. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
4. Unsaturated Hydrocarbon Feedstock for Petroleum ResinC5 Fraction provides the foundation for unsaturated hydrocarbon resins used in road marking paints and viscoelastic sealants. Piperylene and isoprene serve as the main diene components that drive the polymerization step, delivering color stability and improved film-forming properties. The material’s balanced hydrocarbon profile maintains batch consistency demanded by end users in construction and municipal road maintenance sectors. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
5. Precursors for Agrochemical IntermediatesC5 Fraction serves as a hydrocarbon source for key intermediates like isoprene, essential in synthesizing phytohormone analogs, specialty pesticides, and fungicides. Accurate control over trace sulfur and nitrogen contaminants in each batch supports downstream catalytic conversions and maintains reliability in synthetic routes favored by crop protection active ingredient manufacturers. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
6. Carbon Black Feedstock for Specialty ApplicationsC5 Fraction provides a feedstock with naphthenic and paraffinic hydrocarbons for manufacturing special grades of carbon black. These grades focus on color, particle structure, and volatility for use in conductive polymers, ink formulations, and mechanical rubber goods where high-purity requirements preclude heavy aromatic residues. Controlled distillation enables downstream reactors to maintain critical ratios for particle size and lattice alignment. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
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Competitive C5 Fraction prices that fit your budget—flexible terms and customized quotes for every order.
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Tel: +8618136850665
Email: sales4@ascent-chem.com
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At our facility, C5 Fraction production has become a mainstay in daily operations. Sourced from naphtha crackers during the ethylene production process, C5 Fraction comes out as a by-product but serves as more than just a sideline. With over two decades’ hands-on experience, we’ve seen how careful fractionation and purification transform this hydrocarbon stream from a raw, mixed resource into a reliable feedstock for value-added products.
C5 covers a family of hydrocarbons with five carbon atoms per molecule, including isoprene, piperylene, pentadiene, and a handful of saturated and aromatic compounds. Our production line uses licensed technologies and tailor-made fractionation columns to unearth the real strengths buried in these mixed light hydrocarbons. Temperature and pressure must stay tightly aligned to isolate clean fractions, and this technical rigor is key to ensuring downstream users get feedstocks they can trust for further chemical processing.
We offer C5 Fraction under model designation C5-A, known for consistent hydrocarbon ranges between C5 and light C6. This material appears as a clear, colorless liquid with a faint, sweet-oily aroma. During production, it's crucial to maintain water content below trace levels for storage safety, so dedicated drying columns remove moisture. Laboratory tests in our on-site QC lab clock total purity above 98 percent by gas chromatography, though the exact isoprene and piperylene content varies with feedstock and cracker operating conditions.
To prevent contamination and off-spec batch issues, frequent calibration of gas chromatographs and regular raw material audits help catch fluctuations at an early stage. From real-world experience, failing to keep an eye on stabilization can cause minor variations that cascade through the entire supply chain. It’s not enough to hit minimum standards—meeting the specs batch after batch requires production discipline and aggressive troubleshooting when anomalies show up.
The reach of C5 Fraction starts in classic chemical synthesis. Isoprene, a principal constituent, forms the backbone for synthetic rubber manufacturing, especially in the tire industry. Many elastomer plants depend directly on our C5-A for continuous, stable polymerization lines. Isoprene helps deliver tires with robust durability and consistent grip. In packaging and adhesives, the blend of unsaturated hydrocarbons within C5 forms the raw material for hydrocarbon resins. These resins deliver the crucial tack, stickiness, and thermal resistance for pressure-sensitive adhesives, hot-melt glues, and even road-marking paints.
Paint and coating markets demand high-purity C5s to formulate specialty resins with low odor and high clarity. The performance of end products depends on the right balance of linear and cyclic hydrocarbons—the wrong composition leads to brittle, underperforming resins that frustrate end-users. In our experience, quality issues trace back almost every time to upstream fractions, not just resin processing itself. We work closely with downstream processors, swapping technical data and conducting joint trials, to fine-tune specifications and make sure our C5 Fraction delivers the consistency required for specialty applications.
Beyond polymers and adhesives, several flavor and fragrance houses value the lighter C5s for synthesizing aroma chemicals. Piperylene, for example, offers a unique starting point for floral and fruity esters. The pharmaceutical sector swings in through the same doorway: certain C5 intermediates provide cost-efficient building blocks for drugs and vitamins. Because these segments face rigid quality and safety rules, only manufacturers able to deliver fully traceable and reliably pure C5 Fractions earn contracts in these supply chains.
Comparing C5 Fraction to C4 and C6 cuts provides perspective on its industrial value. C4 fractions supply butadiene, essential for rubber but lacking isoprene; C6 cuts include benzene, a major platform but less suited for elastomer chemistry. C5 Fraction covers a sweet spot—its isoprene and piperylene bring together the best aspects for both rubber producers and resin handlers. C5s offer higher flexibility for downstream formulation and chemical synthesis, bridging end-user needs with upstream infrastructure.
The boiling and flash points of C5 Fraction set it apart from heavier petrochemical cuts. Storage infrastructure must allow for well-ventilated, explosion-safe environments. MSDS guidelines call for strict temperature control and grounding, a lesson learned through real-world incidents. Years ago, our loading dock crew encountered a near miss when a transfer hose built up static due to insufficient grounding. Since upgrading our grounding and vapor-recovery procedures, we've had zero safety incidents. This kind of safety-first mindset separates chemical manufacturers who keep their workforce and customers secure from those who simply ship barrels out the gate.
Handling technology for C5 Fraction shares little with gasoline or diesel lines, even though most laymen assume all hydrocarbons work the same. Pumps, gaskets, and pipes must be fitted with seals that tolerate C5’s unique volatility and solvent strength. Cheap substitutes break down quickly, contaminating the material or even leaking, leading to lost product, safety hazards, and expensive cleanup. Drawing on years of hard-won experience, we avoid generic equipment and invest only in parts proven compatible by field testing.
Raw material disruptions have become more common over the last decade, often due to swings in global oil markets or routine cracker maintenance. During the 2020 pandemic, our team worked around fluctuating naphtha supplies by short-looping C5 recovery towers and swapping between alternate feedstocks. This approach prevented supply shortages to our main rubber and resin clients, even as the global market scrambled for alternatives. Flexibility in process settings—something only hands-on manufacturers can really master—proved indispensable for keeping commitments on delivery schedules.
Quality assurance doesn’t rest on lab testing alone. In one instance, a feedstock shift from heavy to light naphtha sharply altered the piperylene-to-isoprene ratio, catching even experienced operators off guard. Only by employing real-time process monitoring and field engineering did we restore fractions to spec before they left our gates. These on-the-ground lessons underscore the importance of direct, regular engagement with manufacturing operations—not just relying on third-party data sheets.
Product innovation doesn’t happen in a vacuum. Bulk resin producers depend on C5 Fraction as a stable, high-purity feedstock, but specialty applications drive more exacting requirements. Over the years, we’ve developed specialty C5 blends with tighter isoprene or piperylene windows, collaborating closely with adhesive and sealant firms confronting processing or performance issues. Direct feedback from line supervisors and R&D chemists enables us to tweak column temperatures and run small pilot batches long before a technology scales up. Ultimately, the most reliable new products come out of these nimble, two-way relationships, not from following formulaic protocols.
Batch-to-batch consistency remains a daily challenge. Some customers want a high piperylene fraction for unique hydrocarbon resins, while others push for minimized aromatic content to suit odor-critical products. The only way to fulfill such requests is through hands-on attention at every production and blending stage. Automating raw product stream measurements has reduced out-of-spec occurrences by nearly seventy percent over the past five years in our plant. Any remaining targets for improvement get hammered out through direct troubleshooting sessions involving both plant engineers and customer technical teams.
We also support our partners in maximizing value extraction. Some resin makers filter C5 Fraction by molecular sieving to concentrate narrow cuts, while others distill out added aromatics for niche applications. These processes rest on a bedrock of high-quality base fraction: no clever downstream trick makes up for upstream defects. That’s a lesson only those who handle both production and downstream support, like us, truly appreciate.
C5 Fraction storage and transport come with unique risks and responsibilities. The lower flash point means storage tanks require pressure relief valves, nitrogen blanketing, and leak detection sensors, all backed by regular staff drills. Our team faced a vapor cloud release incident in the early 2000s that underscored the need for double-containment transfer lines. Investing in such upgrades—and insisting on frequent shutdown inspections—pays off both in safety results and in securing long-term relationships with global customers. Every batch shipped traces its storage time, handling record, and batch analytics in our digital log, giving customers real confidence in product lineage.
Environmental compliance is more than a regulatory box to check. We operate vapor recovery units and closed-cycle process water systems to cut hydrocarbon emissions by over eighty percent since the previous decade. Customers demand traceability, especially those supplying tire, adhesive, and specialty chemical markets in the US or Europe. Our records and independent audits anchor the environmental and safety claims we make—not just for compliance, but as part of our commitment to responsible chemical manufacturing.
Adapting to new rules takes more than paperwork. Regions like the EU regularly update REACH standards for hydrocarbon materials. Meeting new standards sometimes calls for reworking fractionation towers or introducing new quality tests, even when the changes look subtle to outsiders. Fast turnaround—possible only in a fully-owned, operator-run plant—keeps us ahead of changing lists and regulatory updates.
Globally, more than 90 percent of C5 Fraction ends up in downstream chemical applications—synthetic rubber, adhesives, hydrocarbon resins, and solvents. The performance of crucial end products like passenger tire tread, road-marking paint, and packaging adhesives all depend on upstream C5 quality. Off-spec fractions, usually from inconsistent or aged cracker technology, have caused millions in lost output in various industries. Hard data collected internally show even small surges in water content or trace oxygenates in C5 fractions can poison an entire hot-melt resin batch, requiring full reprocessing or disposal.
We’ve found that price-based sourcing often leads to hidden costs. Several large rubber companies have faced plant shutdowns after accepting cut-rate, untraceable fractions—which often fail not only in purity but also in batch-to-batch unpredictability. Fixing these mistakes costs more than any savings upfront. Traceability, direct supply chain control, and a willingness to halt shipments in case of doubt keep long-standing customers coming back, even when the market looks volatile. The value of in-house testing, strict logistics, and production discipline exceeds any benefit short-term traders or brokers offer.
The C5 market evolves as end-use segments shift their priorities. Green tire brands now seek low-PAH (polycyclic aromatic hydrocarbon) rubber, which starts with cleaner C5 Fraction. Specialty adhesives for electronics demand ultra-pure C5 with tighter specs on trace metals and aromatics. We’ve partnered with these innovators by upgrading fractionation towers and investing in advanced GC-MS equipment, enabling new product certifications and opening up fresh export markets. R&D functions work hand-in-hand with operations—fast adaptation comes only from factories invested directly in their success.
Customers want more than just data—they want transparency and problem-solving. Digital logs, real-time shipment tracking, and open access to batch analytics increase downstream confidence. The customer’s success stories don’t arise from automation or e-mails, but from ongoing human interaction. We believe honest product disclosure, open troubleshooting, and a deep knowledge base enable real improvements for everyone using our C5 Fraction.
As manufacturers, not intermediaries, we see every delivery as a reflection of our technical abilities and care for end-use results. Years of production challenges—feedstock swings, quality upsets, safety incidents—strengthened our commitment to craft, safety, and reliability. C5 Fraction never leaves our plant without stringent verification and an attention to history, customer need, and downstream impact. The result isn’t just another chemical feedstock, but a reliable building block shaping some of the most critical industrial and consumer products worldwide.
