2-Pyrrolidone (2-Pyrrolidinone) from Japan
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.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Include NMR or HPLC purity certificates (>99%) to confirm heterocyclic lactam identity and avoid amide reclassification
• Comply with TSCA inventory requirements; provide end-use declaration to prevent diversion to restricted solvent applications
• Watch for misclassification as N-methylpyrrolidone (different HTS 2933.79.29); verify methyl substitution absent