Anhydrous Trisodium Phosphate Powder from Mexico
Anhydrous trisodium phosphate is the water-free form of Na3PO4, a strong base used in metal pretreatment and food processing as an acidity regulator. It is explicitly covered by HTS 2835.29.30.00 as a chemically defined trisodium phosphate. This powder absorbs moisture readily, requiring sealed packaging.
Duty Rate — Mexico → United States
12.2%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include CAS number 7601-54-9 on invoices and ensure 99%+ purity certification for chemically defined status
• For food-grade imports, provide FDA prior notice and GRAS affirmation documentation
• Avoid classifying as polyphosphate; single phosphate units stay in 2835.29