Nepheline Syenite Ceramic Flux from Canada
Calcined nepheline syenite flux for porcelain and sanitary ware production, providing alkali metal oxides for vitrification. Classified HTS 2529.30.0050 as 'other' nepheline syenite despite heat treatment, remaining a natural mineral product. Typical Na2O 9-11%, Al2O3 22-24%.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Chemical analysis certificates mandatory showing fluxing oxides within natural nepheline ranges
• Distinguish from synthetic feldspar substitutes (HTS 2839) via XRF spectrometry reports
• Bulk shipments >20mt require vessel residue certificates to avoid contamination penalties