Hexamethylenediamine Citrate from Mexico
Citric acid salt used in pharmaceutical buffering and nutritional supplements. HTS 2921.22.5000 as polyamine salt derivative. Soluble in water, pH 6-8.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide citric acid content and buffer capacity documentation
• GMP certification required if destined for nutritional use
• Label as food-grade if applicable to avoid chemical classification issues