Alum Cake (Aluminum Sulfate Byproduct) from Mexico
Alum cake is a solid byproduct of aluminum sulfate from water treatment processes, containing the chemically defined compound Al2(SO4)3. It is classified under tariff item 2833.22.00 as an aluminum sulfate, regardless of its byproduct origin, provided it meets the purity and form criteria of Chapter 28.
Duty Rate — Mexico → Canada
0%
Import Tips
• Ensure the alum cake is not contaminated with organic or other inorganic substances that would exclude it from Chapter 28
• Verify the aluminum sulfate content and provide a certificate of analysis to the CBSA if requested
• Confirm the product is not considered a waste under Canadian environmental regulations