Chapter 2820 — Customs Tariff Headings
Subheadings
Products classified under Tariff item 28.20
Activated Manganese Dioxide
Activated manganese dioxide is a porous, high-surface-area form of MnO2 used as a catalyst in organic synthesis and in water purification filters. It is a chemically defined compound of manganese, meeting the criteria of Chapter 28 Note 1(a) as a separate chemically defined compound, and is not excluded by Chapter 28 Note 3.
2820.10.00Battery Grade Manganese Dioxide Powder
Battery grade manganese dioxide powder is a high-purity form of MnO2 specifically processed for use in primary battery cathodes, offering high discharge capacity and stability. It is a chemically defined compound of manganese, classifiable under Chapter 28 as a separate chemically defined compound, and is not excluded by Chapter 28 Note 3.
2820.10.00Electrolytic Manganese Dioxide for Zinc-Carbon Batteries
Electrolytic manganese dioxide for zinc-carbon batteries is a specialized form of MnO2 produced electrolytically from manganese sulfate solution, optimized for dry cell performance. It is a chemically defined compound of manganese, meeting Chapter 28 Note 1(a), and is not excluded by Chapter 28 Note 3.
2820.10.00Synthetic Manganese Dioxide (EMD)
Synthetic manganese dioxide (EMD) is a high-purity form of MnO2 produced via electrolysis, used primarily as a cathode material in alkaline and zinc-carbon batteries. It is a chemically defined compound of manganese, classifiable under Chapter 28 as a separate chemically defined compound, and is not excluded by Chapter 28 Note 3.
2820.10.00Technical Grade Manganese Dioxide
Technical grade manganese dioxide is a moderately pure form of MnO2 used in the production of ferrites, ceramics, and pigments. It is a chemically defined compound of manganese, meeting Chapter 28 Note 1(a), and is not excluded by Chapter 28 Note 3, provided it does not contain added organic or other materials.
2820.90.00Electrolytic Manganese Dioxide (EMD)
Electrolytic manganese dioxide (EMD) is a high-purity form of manganese dioxide produced through an electrolytic process. It is primarily used as the cathode material in lithium-ion and alkaline batteries. As a chemically defined inorganic oxide of manganese, it falls under tariff item 2820.90.00 for other manganese oxides.
2820.90.00Manganese Dioxide (MnO2) Powder
Manganese dioxide (MnO2) powder is a high-purity inorganic compound used extensively in the production of dry-cell batteries, such as alkaline and zinc-carbon types. It is a chemically defined metal oxide, meeting the criteria of Chapter 28. As it is not specifically named elsewhere, it is classified under tariff item 2820.90.00 for other manganese oxides.
2820.90.00Manganese Oxide Nanoparticles
Manganese oxide nanoparticles are nano-sized particles of manganese dioxide (MnO2) used as catalysts in chemical reactions and water treatment applications. Despite their nanoscale form, they remain a chemically defined inorganic oxide of manganese. They are classified under tariff item 2820.90.00 as other manganese oxides, consistent with Chapter 28's coverage of separate chemically defined compounds.
2820.90.00Synthetic Manganese(IV) Oxide for Ceramics
Synthetic manganese(IV) oxide (MnO2) for ceramics is a manufactured form of manganese dioxide used as a colorant and flux in ceramic glazes and tiles, imparting black-brown hues. It is a chemically defined inorganic oxide, not excluded by Chapter 28 notes. It is classified under tariff item 2820.90.00 as other manganese oxides, as it is not a natural product of Section V.
2820.90.00Trimanganese Tetraoxide (Mn3O4) Powder
Trimanganese tetraoxide (Mn3O4) powder is a mixed-valence manganese oxide used in the production of ferrites for magnetic applications and as a sintering aid in ceramics. As a chemically defined inorganic compound of manganese, it is not excluded by Chapter 28 notes. It is classified under tariff item 2820.90.00 as other manganese oxides, covering oxides not specifically named elsewhere.