Picolinic acid from China
Picolinic acid (2-pyridinecarboxylic acid) is explicitly named under HTS 2933.39.20.00 as a pyridine carboxylic acid. Widely used in metal chelation, nutrition supplements, 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
• Include melting point (250°C) and assay specs in certificate of analysis
• Provide dietary supplement end-use letters for FDA compliance
• Use moisture-proof packaging to prevent degradation of hygroscopic acid