Vinylcarbazole Monomer from China
N-Vinylcarbazole monomer, explicitly listed in HTS 2933.99.1200 as an aromatic nitrogen heterocyclic compound. Polymerized to form polyvinylcarbazole used in photoreceptors, electronics, and optical applications. The carbazole ring with vinyl group determines classification.
Duty Rate — China → United States
100%
Rate breakdown
9903.04.6094.2%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• TSCA new chemical notification if not pre-registered
• Specify polymerization inhibitor concentration on SDS
• Storage requirements (dark/cool) must be documented