Triammonium Phosphate Crystals from China
Pure triammonium phosphate (NH4)3PO4 in crystalline form, a chemically defined inorganic salt used as a flame retardant and in chemical synthesis. It falls under HTS 2835.29.20.00 as a phosphate of triammonium, distinct from other ammonium phosphates like mono- or diammonium. This subheading covers specifically triammonium salts within the phosphates category of Chapter 28.
Duty Rate — China → United States
36.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Verify chemical purity and provide Certificate of Analysis (CoA) confirming triammonium composition to avoid reclassification as other ammonium phosphates
• Ensure SDS and proper hazardous material labeling if shipped in quantities exceeding exempt thresholds; triammonium phosphate can be irritant