Technical Grade Magnesium Oxide for Fertilizers from Mexico
Technical magnesia powder used as a magnesium supplement in agricultural fertilizers. It qualifies under HTS 2519.90.50.00 as other magnesium oxide from natural sources, not chemically modified beyond calcination.
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
• Include soil amendment/fertilizer end-use statements, but classify based on material form, not use
• Document calcination process to prove it's 'other magnesium oxide' vs. fused types
• Avoid blending with NPK; pure magnesia imports stay in 2519—mixtures may shift to Chapter 31