Diammonium Phosphate from Canada
Diammonium phosphate ((NH4)2HPO4) functions as a fire retardant, yeast nutrient in baking, and pH buffer. Under HTS 2835.29.51.00 as other phosphates, it's chemically defined per Chapter 28 for ammonium salts. White crystalline powder form.
Duty Rate — Canada → United States
14.1%
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
• Distinguish from 2835.22 DAP fertilizer by purity (>98%) and end-use declaration
• Fire retardant applications need NFPA compliance statements
• Ammonium compounds require proper ventilation labeling for hazmat