Alpha Alumina Catalyst Support from Mexico
Alpha alumina catalyst support consists of alpha-phase aluminum oxide spheres used as an inert substrate for petroleum refining catalysts. It is a chemically defined aluminum oxide compound, not processed into artificial corundum, and falls under this tariff item as aluminum oxide other than artificial corundum.
Duty Rate — Mexico → Canada
0%
Import Tips
• Provide a certificate of analysis confirming the alpha-phase and chemical purity of the aluminum oxide
• Clearly document that the spheres are not abrasive-grade artificial corundum
• If the support is impregnated with catalysts, check if it might be classified elsewhere