Caprolactam (CPL, CAS 105-60-2) is a premium, high-purity white crystalline flake solid or a colorless, transparent molten fluid when heated. It is highly soluble in water, ethanol, ether, chloroform, cyclohexanone, and major organic solvents. As one of the most vital foundational monomers within the global petrochemical and macromolecule synthetics domains, Caprolactam serves as the premium building block for the polyamide value chain. Over 90% of its global consumption is chemically targeted via ring-opening polymerization to manufacture Polyamide-6 (PA6 / Nylon-6 chips). It imparts downstream engineered materials with supreme mechanical tensile strength, elite rub endurance, excellent structural rigidity, and superb chemical anti-corrosion behaviors, making it irreplaceable in formulating automotive plastics, textile filaments, industrial tire cords, and high-barrier films.
Technical Specifications & Physical Properties
| Analysis Item | Specification | Typical Result | Test Method |
| Appearance | White crystalline flakes | Conforms | Visual |
| CPL Content (%) | ≥ 99.90% | 99.94% | GC |
| Crystallization Point (℃) | ≥ 68.8 ℃ | 69.1 ℃ | GB/T 13254 |
| Moisture (%) | ≤ 0.05% | 0.02% | 卡尔费休法 |
| Permanganate Number | ≥ 20,000 s | 25,000 s | Spectrophotometry |
| Volatile Bases (meq/kg) | ≤ 0.40 | 0.15 | GB/T 13254 |
| Color (Hazen, 熔融态) | ≤ 5 | < 5 | ASTM D1209 |
Core Applications
Nylon-6 Engineering Plastics: Formulated as the fundamental reactive monomer to produce modified PA6 engineering resins, widely utilized across automotive under-the-hood components, electronics enclosures, electrical sockets, power tools, and high-precision mechanical gears.
Advanced Textile & Technical Fibers: Extensively melt-spun into Nylon-6 filaments and staple fibers (Chinlon), heavily specified in premium sports apparel, upholstery carpets, and industrial tire cords, heavy-duty conveyor canvases, fishing nets, and aerospace parachute lines.
High-Barrier Packaging Films: Deployed to extrude Biaxially Oriented Polyamide (BOPA) films, delivering elite puncture resistance, optical transparency, and gas-barrier properties tailored for frozen food packaging, medical sterilizations, and hazardous pouch liners.
Organic Chemical Intermediates: Chemically directed to process advanced caprolactam derivatives, specialty coatings crosslinkers, pharmaceutical functional compounds, and amino-acid modified resin structures.
Packaging & Storage
Packing: Customarily supplied in seaworthy 25 KGS net weight multi-layer kraft paper bags or plastic-woven bags with airtight moisture-proof PE liners. Bulk container maritime shipping supports 500 KGS or 1000 KGS palletized jumbo bags. Molten fluid lots are supported via thermal-insulated bulk ISO TANK containers.
Storage: Classified as a non-hazardous chemical but exhibits intense hygroscopic properties and heat-sensitivity. Store strictly inside a perfectly dry, cool, and shade-covered chemical facility with professional moisture control. Keep far away from flames, hot infrastructure, or direct illumination. Maintain packaging absolutely airtight and isolate thoroughly from powerful oxidizers, acids, and bases.
关键字： Caprolactam(CPL);己内酰胺;105-60-2;Azepan-2-one;Hexanolactam;
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