Niobium Pentoxide
Niobium pentoxide (Nb2O5) is a white powder used in capacitors, superconductors, and optical glass. Imported under HTS 2825.90.90.00 as other metal oxides of niobium (columbium). Chemically defined per Chapter 28.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If unwrought niobium metal
Pure metals in Section XV; only oxides in Chapter 28.
If doped for optical applications
Specialty preparations exclude from pure compounds.
If as rare-earth compound mixtures
Complex rare-earth compounds in 2846.
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Import Tips & Compliance
• Specify 'columbium' synonym on invoices; assay confirms Nb2O5 purity
• Electronic grade requires particle size distribution reports
• Avoid confusion with ferro-niobium alloy (7202)
Related Products under HTS 2825.90.90.00
Tantalum Pentoxide
Tantalum pentoxide (Ta2O5) powder used in electronic capacitors and high-K dielectrics. Classifies in HTS 2825.90.90.00 as other metal oxide. Inorganic compound of rare metal tantalum.
Vanadium Pentoxide
Vanadium pentoxide (V2O5) is a yellow-orange powder used as a catalyst in sulfuric acid production. Falls under HTS 2825.90.90.00 as other metal oxides. Catalytically active metal oxide.
Antimony Trioxide
Antimony trioxide (Sb2O3) is a white crystalline powder used as a flame retardant in plastics and textiles. It falls under HTS 2825.90.90.00 as an 'other' metal oxide not specifically provided for elsewhere in heading 2825. This inorganic compound of the metal antimony is chemically defined and meets Chapter 28 criteria.
Tungsten Trioxide Powder
Tungsten trioxide (WO3) is a yellow-green powder used in gas sensors, smart windows, and catalysts. Classified in HTS 2825.90.90.00 as an other metal oxide of tungsten. It qualifies as a chemically defined inorganic compound per Chapter 28 Note 1.
Zinc Peroxide
Zinc peroxide (ZnO2) is a white powder used as an antiseptic, bleaching agent, and in rubber vulcanization. It is imported under HTS 2825.90.90.00 as other metal peroxides not elsewhere specified. This fits as a chemically defined peroxide of the metal zinc.
Molybdenum Trioxide
Molybdenum trioxide (MoO3) is a white to violet powder used in alloy production and as a catalyst. Falls under HTS 2825.90.90.00 as other metal oxides. Chemically defined inorganic base metal oxide per Chapter 28.