Electrolytic Manganese Dioxide (EMD)
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If in the form of manganates or permanganates
Oxidized forms like potassium permanganate are salts classified under heading 2833, not simple oxides.
If doped for anticorrosion use in metal treatments
Antiknock preparations or treated additives containing MnO2 shift to Chapter 38 per Chapter 28 note exclusions.
If sold as a carbide mixture for industrial alloys
Manganese oxide-carbide combinations are classified as carbides under 2849 if meeting Chapter 28 note 2(e).
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• 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
Related Products under HTS 2820.90.00.00
Manganese Dioxide (MnO2) Powder
High-purity manganese dioxide powder used in the production of dry-cell batteries like alkaline and zinc-carbon types. It falls under HTS 2820.90.00.00 as an 'other' manganese oxide, chemically defined as a metal oxide in Chapter 28. This inorganic compound serves as a depolarizer in battery cathodes.
Synthetic Manganese(IV) Oxide for Ceramics
Synthetic MnO2 used as a colorant and flux in ceramic glazes and tiles, providing black-brown hues. It is classified in HTS 2820.90.00.00 as other manganese oxides, fitting Chapter 28 for inorganic metal oxides. Not excluded as a luminophore or glass frit per chapter notes.
Manganese Oxide Nanoparticles
Nano-sized manganese dioxide particles (<100nm) for catalysts in chemical reactions and water treatment. Falls under HTS 2820.90.00.00 as other manganese oxides, chemically defined despite nanoscale form. Used in advanced oxidation processes for pollutant degradation.
Trimanganese Tetraoxide (Mn3O4) Powder
Mn3O4, or trimanganese tetraoxide, used in ferrites for magnetic applications and as a sintering aid. Classified under HTS 2820.90.00.00 as other manganese oxides, a mixed-valence inorganic compound in Chapter 28. Provides magnetic properties in soft ferrites.