Calcined Natural Phosphate Fertilizer from China
Heat-treated natural phosphates from heading 2510, calcined for impurity removal and reactivity enhancement. Explicitly covered by HTS 3103.90.01.00 under heading 3103 note 3(a)(ii) for processed phosphatic fertilizers.
Duty Rate — China → United States
25%
Rate breakdown
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)
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Processing records must prove calcination beyond mere impurity removal to justify Chapter 31 shift
• Radioactivity testing often required for phosphate rock derivatives; comply with NRC guidelines
• Declare exact calcination temperature and duration to distinguish from raw mineral products