Copper(II) Sulfate for Aquaculture from Mexico
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.
Duty Rate — Mexico → Canada
0%
Import Tips
• Confirm the product is not formulated with other active ingredients, as mixtures may fall under different headings
• Provide a safety data sheet (SDS) to CBSA if the product is classified as a hazardous substance
• Check with the Pest Management Regulatory Agency if the product is claimed to control algae, as it may require registration