Copper Sulfate Pentahydrate from China
Copper sulfate pentahydrate (bluestone) is widely used as a fungicide, algaecide, and in electroplating. High-purity grades not under specific copper provisions fall in HTS 2833.29.51 as other sulfates.
Duty Rate — China → United States
28.7%
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
• Copper content assays critical; low purity may shift to 2833.29.3010
• Pesticide registration with EPA mandatory for agricultural imports
• Corrosion-resistant packaging required for hydrated form