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Heptanelactam | Premium Nylon 7 Specialty Monomer | CAS 673-66-5
Overview
Heptanelactam, also known as Enantholactam or Azacyclooctan-2-one, is a specialty 7-membered ring cyclic amide. As a highly valuable homologue of caprolactam, it serves as the exclusive monomer for the ring-opening polymerization of Polyamide 7 (Nylon 7 / PA7). The addition of an extra methylene group in the polymer chain grants PA7 drastically lower moisture absorption and superior dimensional stability compared to standard Nylon 6, making it an elite engineering plastic for precision applications.
Product Description
Heptanelactam, also known as Enantholactam, is a specialty 7-membered ring cyclic amide. As a highly valuable homologue of caprolactam, it serves as the exclusive monomer for the ring-opening polymerization of Polyamide 7 (Nylon 7 / PA7). The addition of an extra methylene group in the polymer chain grants PA7 drastically lower moisture absorption and superior dimensional stability compared to standard Nylon 6, making it an elite engineering plastic for precision applications.
At Shandong Yinglang Chemical Co., Ltd., established in 2011, we supply bulk volumes of High-Purity Heptanelactam (≥ 99.0%) to forward-thinking polymer research institutes and specialty engineering plastic compounders. Shipped safely as Non-Dangerous Goods, our Heptanelactam is packaged under strict moisture-barrier protocols, empowering your reactors to synthesize premium PA7 polymers with flawless optical and mechanical properties.
For high-viscosity PA7 polymerization, strictly controlling trace moisture and volatile impurities is critical. Typical specifications:
| Purity (Heptanelactam) | ≥ 99.0% |
|---|---|
| Moisture / Water | ≤ 0.1% |
| Color (APHA) | ≤ 30 |
| Melting Point | 30°C - 33°C |
- Nylon 7 (PA7) Polymerization: Synthesized into PA7 chips, which offer exceptional dimensional stability and lower water absorption than PA6, unlocking premium engineering applications.
- Precision Engineering Plastics: Injection-molded into highly precise components for the automotive and electronics sectors, where parts must retain exact dimensions regardless of humidity.
- Specialty Fibers: Melt-spun into advanced industrial yarns that require superior fatigue resistance and lower moisture retention.
- Pharmaceutical Intermediates: Utilized as a specialized cyclic building block in complex organic synthesis.
Traditional Polyamide 6 (Nylon 6) is notorious for absorbing ambient moisture, which acts as a plasticizer, causing injection-molded parts to swell and lose tensile strength over time. By upgrading to Heptanelactam as your core monomer, you synthesize Polyamide 7. The extra methylene unit in the PA7 backbone increases the polymer's hydrophobicity, drastically reducing water absorption while preserving Nylon's legendary toughness. This makes it the ultimate choice for high-precision electronic housings and automotive sensors that demand zero dimensional warping.
Because Heptanelactam is hygroscopic and melts slightly above room temperature (~30°C), we utilize premium barrier packaging for secure transit:
- 25 KG / 50 KG UN-approved Fiber Drums with thick double-layered PE inner liners (Tightly sealed to ensure zero moisture ingress).
- 200 KG Steel Drums (Recommended for clients in warmer climates or for liquid-phase heated transport).
Contact us today for the latest FOB/CIF pricing, detailed COA, and logistics estimates for your specialty polymer facility.
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PACKING AND DELIVERY
Packing and delivery
We offer secure and compliant packaging for a wide range of chemical products, from laboratory bottles (100 mL, 250 mL, 500 mL) to customized bulk containers. All shipments follow international hazardous goods standards and include complete documentation such as COA and SDS. With reliable global logistics partners, we ensure safe, fast, and efficient delivery by air, sea, or land according to customer needs.
FAQ
Q1: What documents and certifications do you provide?
A Standard shipment includes COA (Certificate of Analysis) and MSDS (SDS). We also provide ISO 9001 certification and support third-party inspections like SGS or BV upon request.
Q2: Do you provide custom synthesis or formulation services?
A Yes. If you have specific purity requirements or a unique formulation, our R&D team can provide custom synthesis and adjust the stabilizers/inhibitors to meet your technical specifications.
Q3: What are your terms of payment?
A
For Orders ≤ $1,000: 100% in advance.
For Orders > $1,000: 30% T/T in advance, and the balance before shipment or against the copy of B/L. Irrevocable L/C at sight is also acceptable for bulk orders.
Q4: How long is your price valid?
A Chemical prices fluctuate due to the changes in raw material costs and exchange rates. Please contact our sales team for the latest real-time quotation.
Q5: What packaging and shipping ports are available?
A
We normally ship from Qingdao, Shanghai, or Ningbo.
Standard packaging includes 200kg Drums or 1000kg IBC Totes. We ensure strict safety compliance for both general and hazardous chemical cargoes.
Q6: It's my first time importing chemicals — can you help?
A Absolutely. Importing chemicals requires specific documentation. Our experienced logistics team will assist you with the entire process, including handling customs clearance documents and arranging the most suitable shipping method.