Potassium Tripolyphosphate (KTPP) from Germany
Potassium tripolyphosphate is a potassium salt of tripolyphosphoric acid used primarily as a sequestrant and builder in detergents and water treatment. It falls under HTS 2835.39.10.00 as a polyphosphate of potassium, chemically defined per Chapter 28 notes. This inorganic compound helps prevent scale buildup in industrial boilers.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify chemical purity and composition via lab analysis to confirm classification as a potassium polyphosphate under Chapter 28
• Include Safety Data Sheets (SDS) and Certificate of Analysis (COA) in documentation to avoid misclassification as organic compounds
• Check REACH-like regulations for phosphates; improper labeling can lead to customs holds