Synthetic Zeolite Precursor Nepheline from Mexico
High-silica nepheline syenite for synthetic zeolite A and X production in detergents. Provides perfect SiO2/Al2O3 for crystallization. HTS 2529.30.0050 mineral precursor despite chemical processing intent.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• XRF SiO2/Al2O3 ratio 2.1-2.3 certification mandatory
• Amorphous content <5% prevents glass cullet confusion
• Alkali extraction efficiency test data supports mineral status