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HS Code |
994948 |
| Cas Number | 105-60-2 |
| Molecular Formula | C6H11NO |
| Molecular Weight | 113.16 g/mol |
| Appearance | White crystalline solid |
| Melting Point | 68-70°C |
| Boiling Point | 267°C |
| Solubility In Water | Very soluble |
| Density | 1.01 g/cm³ at 25°C |
| Flash Point | 130°C |
| Odor | Faint, musty |
| Ph 1 Solution | 7-8 |
| Vapor Pressure | 0.01 mmHg at 20°C |
As an accredited Caprolactam factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Caprolactam is packaged in 25 kg net weight, moisture-proof, sealed polypropylene bags, typically labeled with product details and hazard warnings. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL) for Caprolactam typically involves packing 20 metric tons in 1000 kg bags for efficient, safe international transport. |
| Shipping | Caprolactam is typically shipped in bulk as a liquid or solid, using stainless steel tankers, drums, or bags, depending on the form and quantity. It must be protected from moisture and contamination. Proper labeling, adherence to local regulations, and safety measures—such as ventilation and spill control—are essential during transport. |
| Storage | Caprolactam should be stored in tightly closed containers made of stainless steel or lined with suitable materials, in a cool, dry, well-ventilated area away from heat, moisture, and direct sunlight. The storage area should be equipped with spill containment, separated from incompatible substances like strong acids and oxidizers, and have proper labeling to ensure safety and prevent contamination. |
| Shelf Life | Caprolactam typically has a shelf life of one year when stored in cool, dry conditions in tightly sealed containers, away from sunlight. |
Applications of Caprolactam in Industrial ManufacturingCaprolactam is a vital organic intermediate used by global manufacturers to produce a range of polyamide-based products. Its application covers multiple industrial sectors, with each scenario demanding precise integration, regulatory compliance, and end-product specifications. Our manufacturing expertise supports downstream users with consistent caprolactam quality, traceability, and application support across major industries. 1. Polyamide 6 (Nylon 6) Fiber ProductionMore than 90% of industrial caprolactam is polymerized to produce Polyamide 6 (PA6) fibers, serving the textile, automotive, and carpet industries. Manufacturers feed caprolactam directly into continuous polymerization lines. The monomer undergoes ring-opening polymerization at elevated temperatures in controlled environments, often under strict material purity and moisture removal requirements. Producers adjust catalyst and additive levels based on fiber tenacity or dyeing demands. End-use properties such as abrasion resistance, tensile strength, and color fastness depend on strict raw material qualification and process discipline. Industry compliance standards
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2. Polyamide 6 Engineering Plastics CompoundingCaprolactam is the foundational monomer in the manufacture of molded engineering plastics based on Polyamide 6 resins. After polymerization, compounding plants blend nylon chips with glass fibers, flame retardants, impact modifiers, and lubricants in twin-screw extruders. Material performance depends largely on monomer purity, with downstream users focusing on dimensional stability, mechanical strength, and molding properties for technical product applications. Strict monitoring of monomer residuals and additive compatibilities is essential to meet end-user product certifications and compound stability targets. Industry compliance standards
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3. Films and Packaging MaterialsThe food and industrial packaging sector relies on the excellent mechanical and barrier properties of nylon films produced from caprolactam. Polyamide 6 resins serve as the base material in biaxial stretching processes for creating multilayer films with high puncture resistance and low oxygen transmission rates. Packaging converters focus on food contact compliance, migration levels, and laminate bonding performance. Achieving high clarity, sealability, and regulatory acceptance in multilayer films requires caprolactam with minimal impurities and optimized polymer molecular weight distribution. Industry compliance standards
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4. Industrial Monomer for Polyamide 6 CopolymersAdvanced applications in fibers, films, and engineering plastics use caprolactam as a key reactive monomer in block and random copolymer synthesis. Producers blend it with other lactams or dicarboxylic acids to achieve tailored melting points, improved dyeing properties, antistatic performance, and balanced impact/modulus ratios. Polymerization sequence, catalyst selection, and comonomer ratios require precise management during continuous or batch production. Selection of caprolactam quality determines downstream color stability and copolymer consistency, especially under stringent performance specifications in automotive or industrial grades. Industry compliance standards
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5. Adhesives and Hot-Melt Resin ManufactureReactive caprolactam finds specialized use as a feedstock for thermoplastic adhesives and hot-melt resins. Downstream manufacturers formulate polyamide-based adhesives with varying chain lengths for paper-laminating, bookbinding, wood assembly, and electronic components. Exact melt viscosity, open time, and adhesion parameters are tested by adjusting primary monomer ratios and through end-group modification. Caprolactam selection focuses on purity, reactivity, and minimal cyclic dimer content to ensure final product suitability for industrial assembly and lamination environments. Industry compliance standards
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6. Specialty Coatings and Surface FinishesIn coatings technology, caprolactam acts as a synthetic intermediate for surface-toughened polyamide finishes. These coatings provide chemical resistance, flexibility, and abrasion protection for metal, wood, and concrete substrates in industrial and infrastructural projects. Coating producers require tight controls on ring impurity and color, as the monomer is prepolymerized or copolymerized with crosslinkers before onsite or factory application. Curing and flow characteristics depend on the degree of polymerization and resin formulation technique. Industry compliance standards
Typical usage ratio
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Competitive Caprolactam prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8618136850665 or mail to sales4@ascent-chem.com.
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Tel: +8618136850665
Email: sales4@ascent-chem.com
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Caprolactam runs through our plant lines in a form that has shaped synthetic materials for decades. As a producer who has monitored every batch that leaves our reactors, I can say that quality and consistency define the way this lactam behaves in the real world. From the shop floor to the labs, you learn there’s no shortcut in the science and art behind caprolactam production. Raw materials, energy, water, skilled operators—they all funnel into the same goal: a product that carries the demands of today’s fiber and plastics industry.
Our grade of caprolactam typically leaves the reactor as white crystalline flakes or granules, commonly packaging at a purity of 99.9% or higher. Moisture remains minimal, and ash content stays well below established tolerance levels—precision that growers in fiber extrusion and injection molding expect. With our process control, we keep ammonium and cyclohexanone traces at bay so nothing compromises polymer chain growth downstream.
The model most clients request falls in the FC/HI grade range, built for spinning into nylon-6 fibers that end up in everything from textiles and carpets to tire cord, fishing nets, and engineering plastics. Our direct customers watch color, transparency, and melting performance. In textile-grade caprolactam, a transparent, colorless melt with a controlled end-group profile keeps polymerization results on target. Our experience has shown that fiber factories react quickly to hues or polymer fluctuations—they notice the origin of every error, and we take that seriously.
Working from the ground up in a manufacturing environment, it becomes clear just how far caprolactam reaches. Nylon-6's journey starts here, from cyclohexanone and hydroxylamine to the monomer, to polymer, to yarn, to the clothing and carpeting in offices, cars, and homes across the globe. A mistake at any stage—off-spec product, impurity spike, process drift—ripples through the supply chain. Unlike bulk commodity materials, technical grade caprolactam calls for stringent attention throughout processing, and operators on the plant floor see how tight the safety and purity windows need to be.
We’ve worked closely with downstream polymer plants, troubleshooting foam, spot defects, or yellowing from trace contamination. Teams swap insights: water quality impacts hydrolysis rates, trace iron or oil causes fiber breaks. We invest in automatically cleaning crystallizers and real-time online purity monitors. Yields and product reputation track back to vigilance across these steps.
Years of feedback loops refine not just purity specs, but particle size distribution, packaging format, and bulk density. For example, larger granules handle better in automated feeding systems, while powder is only used in controlled, small-scale R&D efforts.
Caprolactam stands out among monomers for the nylon family because of its ring structure and controlled reactivity. Unlike hexamethylenediamine or adipic acid, it requires only two process steps for conversion to polyamide-6, skipping the salt formation needed in nylon-6,6 production. As a manufacturer, this reduces solvent use, salt waste, and complexity. It translates to less environmental burden and improved process efficiency—outcomes we consistently aim for in each production cycle.
Compared to imported competitive material, our caprolactam avoids the risk of long storage or transport exposure that can impact color or viscosity. Customers have told us supply disruptions—even minor shipping delays—can leave them with off-grade batches, issues minimized through our local inventory planning and proximity.
Caprolactam delivers a blend of flexibility and performance not found in every comparable feedstock. Its reactivity lends itself to continuous polymerization, which means steady product for fiber spinning lines running 24/7. One upstream hiccup, like increased moisture or free acid, can clog a plant’s spinneret, halting a hundred tons of output. This hard-earned experience drives our commitment to lot-by-lot traceability and robust logistics.
Nearly every major producer faces daily reminders of where their output lands. From our plant view, over 90% of caprolactam heads straight into nylon-6 production. That means clothing—a constant presence on store racks and workwear lines. Industrial yarns head to technical textiles: airbags, seat belts, ropes, nets. High-strength fibers wind up in automotive parts, cable sheathing, tire reinforcement, and even engineered films.
Engineering plastics, molded in factories from the supplied resin, take shape as gears, bearings, and tools under car hoods and inside appliances. The flat-sheet market matters too. Clear extruded nylon sheets serve as barriers, covers, and glazing, valued for durability and chemical resistance—the monomer’s purity determines the resilience of each end-product.
Our relationships with manufacturers and suppliers reinforce that there’s no “unimportant” downstream user. Small-volume R&D labs give us early warnings about off-odor or residual monomer, while global textile groups put pressure on maintaining year-over-year consistency and predictable performance—critical when their end-users demand quality in visible, everyday objects.
Living with the actual process means understanding every lever, valve, and reactor nuance. Reactor temperature, pH, and feed rate all feed into the final outcome—variables that never turn into routine, no matter how many batches you run. Over the years, we’ve seen how updates in control systems and analytical equipment (NIR, GC, HPLC) flag impurities faster. Catching a trace of cyclohexanone or moisture hours earlier can save thousands of dollars and countless work-hours at our customer’s site.
Our plant operates under international standards like ISO 9001, with documentation of every critical control point and a culture that values direct operator feedback as much as lab analysis. Maintenance routines, proactive service of steam traps, raw material tracking, and detailed operator logs keep yields high and incident rates low.
Keeping up with regulatory change—especially restrictions on downstream polymer toxicity and environmental impact—pushes us to refine processes further, limit secondary emissions, and improve recovery systems. This work always finds justification beyond compliance: it brings tangible benefits to our partners, who rely on caprolactam free of detectable nitrosamines, phenol, or other banned substances.
For everyone who works with the challenges of bulk chemical production, energy use and emissions concern us every day. Caprolactam production, with its roots in the cyclohexanone-oxime process, releases byproducts like ammonium sulfate. Plant upgrades have steadily driven these down: today, integrated units recover ammonium sulfate as a fertilizer-grade coproduct, and mother liquor is treated to near-zero loss. That’s not accidental—it’s a hard response to stricter discharge standards and real industry feedback.
Heat recovery from exothermic steps now powers downstream evaporation or supplies energy to solvent distillation units. With bigger focus on sustainability, we scrutinize each step for waste: condensates get recycled; off-gases route to thermal oxidizers; solid waste gets minimized through onsite treatment. Every ton saved matters not just for costs but for plant safety and the local environment.
Years ago, our R&D focused only on yield. Today, consumer demand for sustainable fibers makes us rethink catalysts, biological options, and closed-loop practices. We are actively engaged in partnerships to develop alternative production routes—bio-based cyclohexanone, second-generation feedstocks, and routes that sidestep common waste issues from the caprolactam process.
Supporting customer success, not just sales, means technical service takes a large role. Over the years, our teams have visited fiber and plastics customers to help troubleshoot run-to-run polymerization, fluctuating melt viscosities, or unexplained color shifts. Operators walk end-users through adjusting dosing, drying, and melt temperatures and exchange best practices in extrusion and molding, based on direct production data.
Problems don’t get resolved over the phone or email alone. Sending technical managers onsite, spending time with line operators, and pulling samples at the point of use gives a clearer picture than any sales spec sheet or generic FAQ. Repeat issues—dust formation in high-speed feeding, coil buildup in reactors, corrosion at handling interfaces—let us spot areas to improve upstream.
We keep up with current fiber developments, such as low-temperature spinning or demand for ultra-clean monomer for electronics casing. Input from customers steers process improvements that make real-world impact, like inline filtration upgrades, antifoam protocols, or alternative antioxidant packages for more stable caprolactam in bulk storage.
Direct engagement serves more than quality claims—it builds trust. Our customers know if they call with a product issue, a team is prepared to respond, diagnose, and support recovery.
For a producer, caprolactam’s journey does not end at the factory gate. Product integrity in transit has direct impact on performance at the customer’s site. Containers must be clean, moisture-tight, and promptly offloaded to limit hydrolysis and contamination. Over time, we’ve moved from simple bulk bags to vacuum-packed, foil-lined drums and customized silo deliveries.
Temperature swings during shipping can degrade the product, especially in warmer climates. Layered, insulated packaging helps preserve caprolactam quality, so our customers receive a feedstock as pure and reliable as the one we test before dispatch. Regular checks and updated protocols further prevent rust, condensation, and cross-contamination.
The lessons from the field drive continuous improvement. A delay at port or improper warehouse protocol can spoil a whole truckload. Experience teaches the value of screening carriers, training handlers, and frequent audits of the entire supply chain. Keeping traceability across lots, dates, and delivery modes lets customers pinpoint issues—and lets us offer credible solutions.
Manufacturers live with the realities of chemical risk and workplace safety. Caprolactam, while not considered highly hazardous, poses irritation hazards during melting and loading. Plant operators respect tight ventilation, use PPE, and invest in spill containment as a matter of routine.
Handling large-scale deliveries or railcar transfers means real-time monitoring, fast containment planning, and regular drills. Every incident becomes a learning opportunity for the plant and the customer. Direct customer feedback about handling pain points—in dusting, odor management, or tank unloading—feeds back into our safety programs.
Surprise audits or external stakeholder visits keep everyone focused. You cannot fake a safety culture—especially in an environment where people rely daily on proper containment, hygiene, and clear labeling.
Staying in the manufacturing business brings you face-to-face with changes in fiber and plastics demand, global pricing cycles, and supply chain disruptions. Nylon-6 faces pressure from new applications in lightweight vehicles, electronics, and sports equipment. Traditional textile uses shift regionally, but growing demand for recycled and bio-based polyamides is unmistakable.
Producers like us adapt by evaluating not just production throughput but also recyclability, monomer recovery, and integration with circular economy efforts. Our plant teams study waste to monomer recovery, with pilot projects reclaiming cyclohexanone and even depolymerized nylon-6—from industrial waste, post-consumer textiles, and used carpets.
This matters not only for environmental goals but also as a response to resource volatility. Direct input from customers on recycled feedstock compatibility and polymer quality lets us trial solutions with real impact, rather than relying on isolated lab tests or industry forecasts.
No manufacturer, no matter the batch size or years of operation, can afford complacency. Routine production reviews, operator insights, and close monitoring of purity and physical properties guard against drift. We tweak process chemistry, hardware, and controls to match shifts in raw material profiles or customer specs.
We have set up internal cross-functional groups—operators, technologists, maintenance—to solve recurring production issues: reducing cycle times, cutting water and energy use, and fine-tuning impurity removal. A plant culture that encourages direct reporting, open critique, and data-driven decisions creates products that stay resilient in face of market, regulatory, or technical change.
Feedback from customers and partners shapes our path forward. Whether it’s traceability enhancements through digital batch records, or deploying real-time online analysis tools, each gain reflects lessons learned over years of partnering with others in the polyamide value chain.
Manufacturers like us understand that caprolactam means much more than a commodity. Each shipment connects to livelihoods—factory workers, truck drivers, R&D chemists, customers bringing durable goods to market. A slip in quality, a supply disruption, an unaddressed technical issue—each lands with real-world consequences.
Direct experience, seen in shift logs and daily production checks, gives insight that raw specs or infographics cannot deliver. Plant teams see the big picture: regulatory shifts, raw materials volatility, changing customer priorities, and the push toward circularity. Every learning from plant operations, every improvement in process yield or purity, feeds back into stronger partnerships across multiple industries.
End-users trust manufacturers for more than just product—they trust us to safeguard performance, sustainability, and steady progress. Our plant invests not out of obligation, but in recognition that every batch of caprolactam is a building-block for progress, innovation, and daily life.
