Disodium Phosphite Pentahydrate from Mexico
Disodium phosphite pentahydrate (Na2HPO3·5H2O) is a hydrated form used in analytical chemistry and as a reagent. Classified under HTS 2835.10.00.00 as a phosphonate (phosphite) despite hydration, per chemically defined rules. It appears as colorless crystals.
Duty Rate — Mexico → United States
13.1%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Declare hydrate water content; use UN 3260 for shipping; provide lot analysis certificate