N-Methyl-2-pyrrolidone; and 2-Pyrrolidone
Heterocyclic compounds with nitrogen hetero-atom(s) only: > Lactams: > Other lactams: > Other: > N-Methyl-2-pyrrolidone; and 2-Pyrrolidone
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 2933.79.20.00
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.
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.