</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

Mg-P Desulfurization Reagent Granules from Mexico

Granular mixture of magnesium and phosphorus compounds used in blast furnace hot metal treatment to desulfurize prior to steelmaking. Provides efficient sulfur capture with controlled reaction rates. HTS 3824.99.93.86 applies to such magnesium-containing desulfurization preparations.

Duty Rate — Mexico → United States

15%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

Import Tips

Submit chemical composition certificate showing magnesium as active desulfurizing agent

Declare exact particle size and injection method to distinguish from bulk magnesium