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2921.11.00.00/Trimethylamine N-Oxide Dihydrate/Mexico

Trimethylamine N-Oxide Dihydrate from Mexico

Trimethylamine N-oxide dihydrate (TMAO) from seafood processing or synthesis, used as preservative and stabilizer. As trimethylamine derivative, potentially HTS 2921.11.00.00 but typically amine oxides elsewhere—precise for salts.

Duty Rate — Mexico → United States

13.7%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Distinguish synthetic vs natural origin docs; stabilizer declaration per note (f)