Sodium Phosphite from Japan
Sodium phosphite (Na2HPO3) is a reducing agent and antioxidant used in water treatment and polymer production. It is classified in HTS 2835.10.00.00 as a phosphonate (phosphite) compound meeting Chapter 28 definitions. The product appears as a white powder or aqueous solution.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Specify hydrate form (e.g
• pentahydrate) in documentation; test for phosphonate content >95%; check EPA registration for water treatment applications