Copper Sulfate Pentahydrate Crystals
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.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is put up in retail packaging as a fungicide with instructions for use
Goods put up for retail sale as pesticides are classified in Chapter 38, not as separate chemical elements or compounds.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• 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
Related Products under Tariff item 2833.25.00
Anhydrous Copper Sulfate Powder
Anhydrous copper sulfate is a white, chemically defined powder (CuSO4) without water of crystallization. It is used as a catalyst and in analytical chemistry, and its classification under this tariff item is based on its chemical identity as a sulfate of copper, regardless of hydration state.
Copper(II) Sulfate for Aquaculture
Technical grade copper sulfate crystals for aquaculture are chemically defined copper sulfate (CuSO4), used in dilute solutions for algae control. The end use does not affect classification; it remains a sulfate of copper under this tariff item, provided it meets Chapter 28 criteria for separate chemically defined compounds.
Copper Vitriol Blue Crystals
Copper vitriol blue crystals are the traditional name for hydrated copper sulfate pentahydrate. Despite the historical term, the product is a chemically defined compound (CuSO4·5H2O) and is classified under this tariff item as a sulfate of copper, not as a pigment or dye.
Electroplating Grade Copper Sulfate
Electroplating grade copper sulfate is a refined form of CuSO4 with high purity for use in acidic copper plating baths. It is a chemically defined compound and falls under this tariff item as a sulfate of copper, provided it is not mixed with additives or prepared as a plating solution.
Feed Grade Copper Sulfate Monohydrate
Feed grade copper sulfate monohydrate (CuSO4·H2O) is a chemically defined compound used as a mineral supplement in livestock feed. It is classified under this tariff item as a sulfate of copper, regardless of its feed grade designation, as long as it is a separate chemically defined compound.
Laboratory Grade Copper Sulfate
Laboratory grade copper sulfate is high-purity CuSO4·5H2O meeting ACS reagent specifications for analytical and educational use. It is a chemically defined compound and falls under this tariff item as a sulfate of copper, with packaging size not affecting classification.