Electrolytic Manganese Dioxide (EMD) from China
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 — China → United States
39.7%
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
• 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