D(-)-Tartaric Acid from Mexico
The D(-)-enantiomer of tartaric acid, less common but chemically identical structure to L-form, classified under HTS 2918.12.00.00. Used in resolution of racemic mixtures and specialty synthesis.
Duty Rate — Mexico → United States
10%
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
• Rare enantiomer; verify supplier chiral purity >98%
• Higher cost; confirm insurance for high-value shipments
• Research use common; university imports may qualify duty-free