L-Aspartic Acid Monohydrate Powder from Mexico
L-Aspartic acid in monohydrate crystalline form (C4H7NO4·H2O) for pharmaceutical and supplement applications. Remains classified under HTS 2922.49.49.15 as the hydrate doesn't alter its chemical definition as pure L-aspartic acid. The water of crystallization is incidental per Chapter 29 solvent notes.
Duty Rate — Mexico → United States
14.2%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Specify hydrate water content via Karl Fischer titration (<12%) to maintain pure compound status
• Use UN 3077 packaging for 1000kg+ bulk to meet DOT transport requirements
• Validate optical rotation [+24°] confirms L-isomer during customs exam