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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If stabilizer additions exceed 'necessary for preservation' threshold
Excessive additives change character to chemical preparation under Chapter 38.
If misinterpreted as carboxylic acid amide
Different oxygen-function classification, but lactam nitrogen hetero-atom takes precedence.
If used in paint/varnish formulations
Paints containing these solvents classified by function in Chapter 32.
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Import Tips & Compliance
• Document stabilizer composition and concentration to prove compliance with Chapter 29 note (f) limitations
• Include stability test data showing necessity for preservation during transport
• Customs may test for prohibited impurities; maintain batch records for 5 years
Related Products 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.
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.