Copper Sulfate Pentahydrate Crystals from Mexico
Copper sulfate pentahydrate crystals (CuSO4·5H2O) are a separate chemically defined compound with a specific crystalline structure. They are used as a fungicide in agriculture and in laboratory settings, and they fall under this tariff item as a sulfate of copper, consistent with Chapter 28 Note 1.
Duty Rate — Mexico → Canada
0%
Import Tips
• Ensure the product is labelled with its chemical formula and purity to confirm it is a chemically defined compound
• If intended for agricultural use as a fungicide, verify whether it requires registration under the Pest Control Products Act
• Keep records of the country of origin, as duty rates may vary under trade agreements