Potassium Tripolyphosphate (KTPP) from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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