Electrolytic Manganese Dioxide (EMD) from Mexico
Electrolytic manganese dioxide (EMD), a high-purity form produced via electrolysis, primarily for lithium-ion and alkaline battery cathodes. Classified under HTS 2820.90.00.00 as other manganese oxides, it is a chemically defined inorganic compound per Chapter 28 Note 1. Its gamma crystal structure enhances battery performance.
Duty Rate — Mexico → United States
14.7%
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
• Provide electrolytic production process certificates to distinguish from natural MnO2 and support 'chemically defined' status
• Comply with TSCA import requirements for new chemical substances if purity exceeds standard battery grades
• Avoid common pitfalls by ensuring particle size specs are documented to prevent reclassification as a micronized preparation