Copper Sulfate Pentahydrate from Mexico
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 — Mexico → United States
3.7%
Rate breakdown
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