USP Grade Sodium Tripolyphosphate from Japan
United States Pharmacopeia (USP) grade STPP is a high-purity polyphosphate used in pharmaceutical formulations and as a pharmaceutical aid for controlled release. It qualifies under HTS 2835.31.00.00 as chemically defined sodium triphosphate. Purity exceeds pharmacopeia standards without organic admixtures.
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
• Submit USP certificate of analysis and DMF if for drug master file; FDA registration mandatory
• Declare pharmacopeia grade explicitly to prevent downgrade to technical grade valuation