Vinylpyridine Polymer Monomer from China
4-Vinylpyridine monomer contains an unfused pyridine ring and serves as raw material for ion-exchange resins and adhesives. HTS 2933.39.61 covers it via additional U.S. note 3 to section VI for regulated pyridines. Inhibitor-stabilized for polymerization control.
Duty Rate — China → United States
19%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Include polymerization inhibitor certificate (MEHQ typically) and shelf-life data
• Ship under nitrogen blanket; declare as UN1992 flammable liquid
• TSCA notification required for new polymer manufacturing