Nepheline Syenite Powder from China
Finely ground nepheline syenite used primarily as a fluxing agent in ceramic and glass manufacturing to lower melting temperatures. This natural aluminosilicate mineral falls under HTS 2529.30.00 as unprocessed nepheline syenite in powdered form, distinct from synthetic materials. It provides silica, alumina, and alkalis essential for glaze and body formulations.
Duty Rate — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Verify mineral purity through lab analysis to confirm classification under 2529.30.00 and avoid reclassification as earth colors in 2530
• Include geological origin certification and particle size specs in documentation for customs valuation
• Ensure bulk packaging complies with dust control regs; watch for misdeclaration as feldspar (2529.21/22)