Heterocyclic compounds; lactams; 6-hexanelactam (epsilon-caprolactam)

HS v2017 Code: 293371

About heterocyclic compounds; lactams; 6-hexanelactam (epsilon-caprolactam)

HS code 293371 covers the production of 6-hexanelactam, also known as epsilon-caprolactam, a key chemical used in the manufacture of nylon 6. Nylon 6 is a widely used synthetic polymer with diverse applications in the textile, automotive, and industrial sectors. The global market for 6-hexanelactam is driven by the growing demand for nylon 6, which is expected to continue expanding due to its versatility and the increasing use of synthetic materials across various industries.

Production process

The production of 6-hexanelactam typically involves the catalytic oxidation of cyclohexanone, followed by a series of chemical reactions to form the final product. The key steps include the conversion of cyclohexanone to cyclohexanone oxime, the rearrangement of the oxime to 6-aminocaproic acid, and the subsequent cyclization of the acid to form 6-hexanelactam. Advanced manufacturing techniques, such as continuous processes and efficient catalysts, have helped optimize the production of this important chemical.

Production inputs

The main inputs required for the production of 6-hexanelactam include cyclohexanone, which is typically derived from the oxidation of cyclohexane, as well as various catalysts, solvents, and energy sources. The manufacturing process also requires specialized equipment, such as reactors, distillation columns, and purification systems, to ensure the high purity of the final product.

Production outputs

The primary output of HS code 293371 is 6-hexanelactam, which is then used as a key raw material in the production of 540231 Nylon 6 or polyamide-6. Nylon 6 is widely used in the manufacture of a variety of products, including 550320 Synthetic staple fibers, of polyesters, 540233 Filaments of nylon or other polyamides, and 392010 Plates, sheets, film, foil and strip, of plastics, non-cellular and not reinforced, laminated, supported or similarly combined with other materials.

Revisions to 293371

Classification codes are adjusted frequently. The code may have been revised or replaced between system versions. The table below shows the history (newest to oldest) of the code 293371. The most recent 1 version of this code (293371) is in the HS v2022 system:

This page shows a legacy version of code 293371 ( HS v2017).

Family tree for heterocyclic compounds; lactams; 6-hexanelactam (epsilon-caprolactam)

    graph LR
    A["<a href='/classifications/hs/v2017/29'>29: Organic chemicals</a>"]
A --> B["<a href='/classifications/hs/v2017/2933'>2933: Heterocyclic compounds with nitrogen hetero-atom(s) only</a>"]
B --> C["<a href='/classifications/hs/v2017/293371'>293371: Heterocyclic compounds; lactams; 6-hexanelactam (epsilon-caprolactam)</a>"]

    B --> D["<a href='/classifications/hs/v2017/293311'>293311: Heterocyclic compounds; with nitrogen hetero-atom(s) only, containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, phenazone (antipyrin) and its derivatives</a>"]
B --> E["<a href='/classifications/hs/v2017/293319'>293319: Heterocyclic compounds; with nitrogen hetero-atom(s) only, containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, other than henazone (antipyrin) and its derivatives</a>"]
B --> F["<a href='/classifications/hs/v2017/293321'>293321: Heterocyclic compounds; with nitrogen hetero-atom(s) only, containing an unfused imidazole ring (whether or not hydrogenated) in the structure, hydantoin and its derivatives</a>"]
B --> G["<a href='/classifications/hs/v2017/293329'>293329: Heterocyclic compounds; with nitrogen hetero-atom(s) only, containing an unfused imidazole ring (whether or not hydrogenated) in the structure, other than hydantoin and its derivatives</a>"]
B --> H["<a href='/classifications/hs/v2017/293331'>293331: Heterocyclic compounds; containing an unfused pyridine ring (whether or not hydrogenated) in the structure, pyridine and its salts</a>"]
B --> I["<a href='/classifications/hs/v2017/293332'>293332: Heterocyclic compounds; containing an unfused pyridine ring (whether or not hydrogenated) in the structure, piperidine and its salts</a>"]
B --> J["<a href='/classifications/hs/v2017/293333'>293333: Heterocyclic compounds; containing an unfused pyridine ring (whether or not hydrogenated) in the structure, other than pyridine and its salts, other than piperidine and its salts</a>"]
B --> K["<a href='/classifications/hs/v2017/293339'>293339: Heterocyclic compounds; containing an unfused pyridine ring (whether or not hydrogenated) in the structure, n.e.c. in 2933.3</a>"]
B --> L["<a href='/classifications/hs/v2017/293341'>293341: Heterocyclic compounds; containing a quinoline or isoquinoline ring-system (whether or not hydrogenated) in the structure, not further fused, levorphanol (INN) and its salts</a>"]
B --> M["<a href='/classifications/hs/v2017/293349'>293349: Heterocyclic compounds; containing a quinoline or isoquinoline ring-system (whether or not hydrogenated) in the structure, not further fused, other than levorphanol (INN) and its salts</a>"]
B --> N["<a href='/classifications/hs/v2017/293352'>293352: Heterocyclic compounds; containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, malonylurea (barbituric acid) and its salts</a>"]
B --> O["<a href='/classifications/hs/v2017/293353'>293353: Allobarbital (INN), amobarbital (INN), barbital (INN), butalbital (INN), butobarbital, cyclobarbital (INN), methylphenobarbital (INN), pentobarbital (INN), phenobarbital (INN), secbutabarbital (INN), secobarbital (INN) and vinylbital (INN); salts thereof</a>"]
B --> P["<a href='/classifications/hs/v2017/293354'>293354: Heterocyclic compounds; containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, other derivatives of malonylurea (barbituric acid) and salts thereof, n.e.c. in 2933.53</a>"]
B --> Q["<a href='/classifications/hs/v2017/293355'>293355: Heterocyclic compounds; containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure; loprazolam (INN), mecloqualone (INN), methaqualone (INN), and zipeprol (INN); salts thereof</a>"]
B --> R["<a href='/classifications/hs/v2017/293359'>293359: Heterocyclic compounds; containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, (other than malonylurea and its derivatives, loprazolam, mecloqualone, methaqualone, zipeprol, and salts thereof) n.e.c. in 2933.5</a>"]
B --> S["<a href='/classifications/hs/v2017/293361'>293361: Heterocyclic compounds; containing an unfused triazine ring (whether or not hydrogenated) in the structure, melamine</a>"]
B --> T["<a href='/classifications/hs/v2017/293369'>293369: Heterocyclic compounds; containing an unfused triazine ring (whether or not hydrogenated) in the structure, others excluding melamine</a>"]
B --> U["<a href='/classifications/hs/v2017/293372'>293372: Heterocyclic compounds; lactams; clobazam (INN) and methyprylon (INN)</a>"]
B --> V["<a href='/classifications/hs/v2017/293379'>293379: Heterocyclic compounds; lactams; other than 6-hexanelactam (epsilon caprolactam) and clobazam (INN) and methyprylon (INN)</a>"]
B --> W["<a href='/classifications/hs/v2017/293391'>293391: Heterocyclic compounds; alprazolam (INN), camazepam (INN), chlordiazepoxide (INN), clonazepam (INN), clorazepate, delorazepam (INN), diazepam (INN), estazolam (INN), ethyl loflazepate (INN), fludiazepam (INN), flunitrazepam (INN), (cont)</a>"]
B --> X["<a href='/classifications/hs/v2017/293392'>293392: Heterocyclic compounds; azinphos-methyl (ISO)</a>"]
B --> Y["<a href='/classifications/hs/v2017/293399'>293399: Heterocyclic compounds; n.e.c. in headings no. 2933</a>"]

    

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class E level6
class F level6
class G level6
class H level6
class I level6
class J level6
class K level6
class L level6
class M level6
class N level6
class O level6
class P level6
class Q level6
class R level6
class S level6
class T level6
class U level6
class V level6
class W level6
class X level6
class Y level6

  class C highlight

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