Sodium Tripolyphosphate Hexahydrate Crystals from Canada
STPP hexahydrate in crystalline form serves as a buffering agent and emulsifier in meat processing and canned seafood. It is sodium triphosphate (Na5P3O10·6H2O), directly matching HTS 2835.31.00.00 for polyphosphates. The hydrate form is chemically defined under Chapter 28 notes.
Duty Rate — Canada → United States
11.4%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include water content analysis (typically 43-49%) in COA to distinguish from anhydrous for accurate duty assessment
• For food use, comply with EU REACH if transshipping; US importers need GRAS affirmation