2,5-Pyridinedicarboxylic acid from China
2,5-Pyridinedicarboxylic acid (isocinchomeronic acid) is explicitly named under HTS 2933.39.20.00. Used in coordination polymers, metal-organic frameworks, and pharmaceutical intermediates.
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
• Submit titration analysis confirming dicarboxylic acid purity
• Use HDPE containers resistant to carboxylic acid corrosion
• Include research chemical end-use statements for university imports