N-Methyl-2-Pyrrolidone (NMP)
N-Methyl-2-pyrrolidone (NMP) is a versatile polar aprotic solvent classified as a lactam under HTS 2933.79.20.00 due to its five-membered heterocyclic ring containing a nitrogen hetero-atom and amide functionality. It is widely used in industrial applications like paint stripping, polymer processing, and electronics manufacturing.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If sold as a formulated solvent mixture with additives exceeding simple stabilization
Mixtures not qualifying as chemically defined organic compounds fall under Chapter 38 as chemical preparations.
If imported specifically as an organic paint or varnish remover
Products put up for retail sale as paint removers are classified in heading 3814 regardless of chemical composition.
If considered a cyclic alcohol derivative rather than lactam
Alternative classification possible if structural interpretation emphasizes hydroxyl function over lactam nitrogen hetero-atom.
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Import Tips & Compliance
• Provide detailed chemical composition certificates and Safety Data Sheets (SDS) to verify purity as a chemically defined compound under Chapter 29
• Comply with TSCA regulations and ensure proper hazardous material labeling for transport as a flammable liquid
• Avoid misclassification as a mixture; confirm it's not diluted beyond Chapter 29 note (e) limits to prevent reclassification
Related Products under HTS 2933.79.20.00
2-Pyrrolidone (2-Pyrrolidinone)
2-Pyrrolidone is a five-membered lactam ring compound with a single nitrogen hetero-atom, specifically enumerated under HTS 2933.79.20.00. It serves as a chemical intermediate for synthesizing pharmaceuticals, agrochemicals, and vinylpyrrolidone polymers.
Pharma-Grade N-Methyl-2-Pyrrolidone USP
Pharmaceutical-grade NMP meeting USP standards is the same chemically defined lactam as industrial NMP, classified under HTS 2933.79.20.00. The higher purity specification doesn't change its fundamental chemical classification as a nitrogen heterocyclic lactam.
Industrial 2-Pyrrolidone with Stabilizer
2-Pyrrolidone containing added stabilizers for transport and preservation remains classified under HTS 2933.79.20.00 per Chapter 29 note (f). The stabilizer doesn't render it suitable for specific use beyond general chemical applications.
NMP Electronic Grade Solvent
High-purity NMP for semiconductor manufacturing retains classification under HTS 2933.79.20.00 as the same chemically defined heterocyclic lactam. End-use purity doesn't affect tariff classification.
2-Pyrrolidone Polymer Intermediate
Bulk 2-Pyrrolidone used specifically for polyvinylpyrrolidone (PVP) synthesis is classified under HTS 2933.79.20.00. Its role as chemical intermediate doesn't change its status as enumerated lactam.
NMP Paint Stripper Base (Pure)
Pure NMP imported for methylene chloride-free paint stripper formulations classified under HTS 2933.79.20.00. Remains a chemically defined compound despite common paint removal applications.