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HSChapter 28
U.S. imports of manganese dioxide (HS 282010) totaled $2.4M in April 2026, traded with 8 countries.
Importers of Manganese Dioxide paid $26K in duties in April 2026 — an effective duty rate of 4.7% on $546K in dutiable value, based on actual customs collections rather than the published tariff schedule. Manganese Dioxide imports of $2.4M in April 2026 ran 54% above the year-to-date monthly average of $1.6M.
Last updated: April 2026 dataManganese dioxide (MnO₂) is the electrochemically active material in alkaline and zinc-carbon dry-cell batteries, making it a high-volume input for the consumer electronics and portable power supply industries. Colombia and Brazil are the leading US import sources under tariff line 2820100000, reflecting significant manganese ore processing capacity in South America. Electrolytic manganese dioxide (EMD) and natural manganese dioxide (NMD) are distinct commercial grades with different purity and electrochemical performance profiles, and buyers typically specify grade in purchase contracts. Japan is also a notable supplier, particularly for high-purity EMD grades used in lithium-ion battery cathode precursors.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Both EMD and NMD classify under HTS 2820.10 as manganese dioxide, but they differ substantially in purity and electrochemical activity. EMD is produced by electrolytic deposition and achieves higher purity levels required for alkaline battery cathodes. NMD is mined and processed ore used in lower-performance applications. While the HTS heading does not subdivide by grade, commercial contracts and technical specifications routinely distinguish them.
Because MnO₂ is a direct cathode material for alkaline batteries and a precursor in some lithium-ion chemistries, demand is closely tied to consumer electronics production cycles. Concentration of supply in a small number of South American and Asian sources means that logistics disruptions or export-policy changes in those regions can quickly affect US battery manufacturers' input costs and availability.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| COLOMBIA | $1.9M | -- | -$1.9M |
| GREECE | $492K | -- | -$492K |
| CANADA | -- | $293K | +$293K |
| ITALY | -- | $131K | +$131K |
| NETHERLANDS | -- | $82K | +$82K |
Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2820100000 | MANGANESE DIOXIDE | $2.4M | 4.70% | $26K |
MANGANESE DIOXIDE
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2820100000 | MANGANESE DIOXIDE | $765K |
MANGANESE DIOXIDE
642.1K kg
URANIUM ENRICHED IN U235 ETC. PLUTONIUM ETC.
HS 284420
NATURAL URANIUM & COMPOUNDS, ALLOYS & CERAMICS ETC
HS 284410
ANHYDROUS AMMONIA
HS 281410
ALLOYS, DISPERSIONS,ISOTOPES & COMPOUNDS NES
HS 284443
SILICON, UNDER 99.99% (BY WEIGHT) SILICON
HS 280469
PHOSPHORIC ACID AND POLYPHOSPHORIC ACIDS
HS 280920
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHARLESTON, SC | $1.9M | $20K | -$1.9M |
| SAVANNAH, GA | $507K | $20K | -$487K |
| NORFOLK-NEWPORT NEWS, VA | -- | $206K | +$206K |