Caprolactam
Caprolactam is a cyclic amide (lactam) with a six-membered ring containing a nitrogen hetero-atom, used primarily as a monomer in the production of nylon 6 polymer. It falls under HTS 2933.79.85.00 as a lactam that is neither specifically named in prior subheadings nor a beta-lactam antibiotic structure. This chemically defined heterocyclic compound with nitrogen hetero-atom only meets Chapter 29 requirements for classification.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| π¨π³China | 6.5% | +25.0% | 31.5% |
| π²π½Mexico | 6.5% | β | 6.5% |
| π¨π¦Canada | 6.5% | β | 6.5% |
| π©πͺGermany | 6.5% | β | 6.5% |
| π―π΅Japan | 6.5% | β | 6.5% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as crude or technical grade with significant impurities
Impurities exceeding chapter note thresholds may exclude it from Chapter 29's chemically defined organic compounds.
If polymerized into nylon 6 resin pellets
Polymerized caprolactam becomes acrylic polymers classified in Chapter 39 rather than monomer lactams.
If supplied as solution in solvent for safety/transport
Chapter notes allow solutions only if solvent doesn't render suitable for specific use beyond general purposes.
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Import Tips & Compliance
β’ Provide detailed chemical composition certificates and CAS number (105-60-2) documentation to verify classification as a lactam
β’ Ensure proper Hazard Communication labeling per GHS standards for skin irritants and reproductive toxins
β’ Verify REACH compliance if transshipping through EU; common misclassification as simple amide rather than lactam
Related Products under HTS 2933.79.85.00
2-Pyrrolidone (2-Pyrrolidinone)
2-Pyrrolidone is a five-membered lactam ring compound used as a high-boiling solvent in pharmaceuticals, electronics, and polymer manufacturing. Classified under HTS 2933.79.85.00 as an other lactam with nitrogen hetero-atom only, not specifically enumerated elsewhere. Its cyclic amide structure distinguishes it from acyclic amides.
Epsilon-Caprolactam Technical Grade
Technical grade epsilon-caprolactam contains 95-99% purity with stabilizers, used in industrial nylon production. Falls under HTS 2933.79.85.00 as other lactams per chapter notes allowing stabilizers for preservation/transport. Remains classified as chemically defined compound despite minor impurities.
N-Methyl-2-Pyrrolidone Stabilized
N-Methyl-2-pyrrolidone (NMP) is a methylated lactam used as solvent in battery production and paint strippers, here with anti-oxidant stabilizer. Classified HTS 2933.79.85.00 as other lactams (distinct from unsubstituted 2933.79.29). Stabilizer permitted per chapter note (f) for preservation.
Piperidin-2-One
Piperidin-2-one (Ξ΄-valerolactam) is a six-membered lactam ring used in organic synthesis and polymer chemistry. Classified under HTS 2933.79.85.00 as other lactams with nitrogen hetero-atom only. Distinguish from piperidine bases by amide functionality.
Caprolactam with Anti-Caking Agent
Caprolactam powder treated with silicon dioxide anti-caking agent for bulk handling and transport. Permitted under HTS 2933.79.85.00 per chapter note (g) for identification/safety additives not rendering specific use suitability. Maintains principal lactam classification.
Valerolactam (5-Methyl-2-Pyrrolidone)
Valerolactam is a substituted five-membered lactam used in polymer synthesis and as pharmaceutical intermediate. HTS 2933.79.85.00 covers this alkyl-substituted lactam not specifically named in prior subheadings. Meets nitrogen-heteroatom only heterocyclic criteria.