Potassium Sulfate Fertilizer (Sulfate of Potash) from China
Crystalline potassium sulfate (K2SO4) fertilizer, also called sulfate of potash, supplies potassium and sulfur to crops without chloride. Classified under HTS 3104.90.0100 as 'other' potassic fertilizers not enumerated in prior headings or retail packaged.
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)
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Include lab analysis showing sulfate and potassium content to distinguish from muriate of potash
• Confirm not mixed with organic substances that could shift classification outside Chapter 31
• Label clearly as agricultural fertilizer to avoid misclassification as industrial chemicals