N-Vinyl-2-Pyrrolidone Monomer (NVP)
N-Vinyl-2-pyrrolidone (NVP) is a heterocyclic lactam monomer with a vinyl group attached to the nitrogen hetero-atom of the 2-pyrrolidone ring. It is used primarily in the production of polyvinylpyrrolidone (PVP) polymers for pharmaceuticals, cosmetics, and adhesives. This pure chemical compound falls under HTS 2933.79.30.00 as a specific 'other lactam' due to its defined heterocyclic structure.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If polymerized into polyvinylpyrrolidone (PVP)
Polymerized NVP becomes an acrylic polymer classified in Chapter 39, heading 3906 for PVP resins.
If imported as a formulated mixture or solution exceeding Chapter 29 solvent limits
Solutions not qualifying under Chapter 29 note (e) for safety/transport fall into mixtures of chemicals in heading 3824.
If classified primarily by its cyclic amide oxygen function rather than nitrogen heterocycle
Cyclic lactams without strong heterocyclic emphasis may shift to oxygen-function compounds in heading 2933 earlier subheadings, but Chapter notes prioritize last numerical order.
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Import Tips & Compliance
• Provide detailed chemical analysis certificates confirming purity as NVP monomer to avoid reclassification as a polymer under Chapter 39
• Ensure SDS (Safety Data Sheets) and proper UN shipping labels for flammable liquid handling during customs clearance
• Verify inhibitor content (e.g
• hydroquinone) in documentation, as polymerization during transit can lead to shipment rejection
Related Products under HTS 2933.79.30.00
Stabilized N-Vinyl-2-Pyrrolidone Monomer
This is N-Vinyl-2-pyrrolidone monomer with added stabilizers like 50-100 ppm hydroquinone to prevent premature polymerization during storage and transport. It remains a separate chemically defined compound under Chapter 29 notes (f) and (g). Classified specifically under HTS 2933.79.30.00 for its lactam structure.
Technical Grade N-Vinyl-2-Pyrrolidone (NVP) Monomer
Technical grade NVP monomer contains minor impurities but remains a chemically defined heterocyclic lactam per Chapter 29 note (a). Used in industrial polymerizations for water-soluble resins in inks and coatings. HTS 2933.79.30.00 covers this specific N-vinyl pyrrolidone form.
Pharma-Grade N-Vinyl-2-Pyrrolidone Monomer
High-purity NVP monomer (>99.9%) for pharmaceutical PVP production, meeting USP/EP standards as a heterocyclic nitrogen lactam. Its chemical definition fits Chapter 29 precisely, specified under HTS 2933.79.30.00. Used in drug delivery and excipient synthesis.
NVP Monomer with MEHQ Inhibitor
N-Vinyl-2-pyrrolidone monomer inhibited with monomethyl ether hydroquinone (MEHQ) at 250 ppm for stability in adhesive and coating applications. Qualifies under Chapter 29 note (f) as preserved heterocycle lactam. Specific HTS 2933.79.30.00 designation applies.
Distilled N-Vinyl-2-Pyrrolidone Monomer
Vacuum-distilled NVP monomer with water content <0.1%, a pure heterocyclic lactam for high-end PVP in contact lenses and biomedical uses. Falls squarely under HTS 2933.79.30.00 as named compound.