Chapter 2825 — Customs Tariff Headings
Subheadings
Products classified under Tariff item 28.25
Anhydrous Hydrazine
Anhydrous hydrazine (N2H4) is a highly reactive, colorless liquid used primarily in chemical synthesis and as a rocket propellant. It is a separate chemically defined compound of an inorganic base, falling squarely within the scope of tariff item 2825.10.00.
2825.10.00Hydrazine Hydrate 64% Solution
Hydrazine hydrate 64% solution is an aqueous solution of hydrazine, a chemically defined compound dissolved in water. It is widely used in boiler water treatment and as a blowing agent, and qualifies under Chapter 28 Note 1(b) as a solution of a separate chemically defined compound.
2825.10.00Hydrazine Monohydrate
Hydrazine monohydrate (N2H4·H2O) is a chemically defined compound consisting of hydrazine with one molecule of water. It is used as a reducing agent and in rocket propulsion, and is classified under this item as an inorganic derivative of hydrazine.
2825.10.00Hydrazine Sulfate
Hydrazine sulfate (N2H4·H2SO4) is a white crystalline inorganic salt of hydrazine, used in analytical chemistry and crystal growth. As an inorganic salt of hydrazine, it falls directly under tariff item 2825.10.00.
2825.10.00Hydroxylamine Free Base
Hydroxylamine free base (NH2OH) is a chemically defined inorganic compound used in chemical reductions and as a pharmaceutical intermediate. It is the parent hydroxylamine compound and is classified under tariff item 2825.10.00.
2825.10.00Hydroxylamine Hydrochloride
Hydroxylamine hydrochloride (NH2OH·HCl) is a white crystalline inorganic salt of hydroxylamine, used as a reducing agent in photography and pharmaceuticals. It qualifies under tariff item 2825.10.00 as an inorganic salt of hydroxylamine.
2825.10.00Hydroxylamine Sulfate
Hydroxylamine sulfate ((NH2OH)2·H2SO4) is a stable inorganic salt of hydroxylamine used in organic synthesis and as an antioxidant. It falls under tariff item 2825.10.00 as an inorganic salt of hydroxylamine per Chapter 28 definitions.
2825.10.00Hydroxylammonium Chloride
Hydroxylammonium chloride is a synonym for hydroxylamine hydrochloride, a reducing agent used in textile and pharmaceutical processing. It is classified under tariff item 2825.10.00 as an inorganic hydroxylamine salt.
2825.10.00Monomethylhydrazine
Monomethylhydrazine (CH3NHNH2) is an organic derivative of hydrazine, but it may be classified under this item if it meets the chemical definition of an inorganic base. However, as an organic compound, it is generally excluded from Chapter 28 by Note 3(b) unless it falls under the exceptions in Note 2.
2825.10.00Unsymmetrical Dimethylhydrazine
Unsymmetrical dimethylhydrazine (UDMH) is an organic compound used in hypergolic rocket fuels. While it is a hydrazine derivative, it is typically classified as an organic chemical under Chapter 29, not under this inorganic heading.
2825.20.00Anhydrous Lithium Hydroxide
Anhydrous lithium hydroxide (LiOH) is a white, hygroscopic powder used in grease manufacturing, CO2 scrubbing systems, and as a flux in ceramics. It is a separate chemically defined inorganic compound of lithium, falling squarely under tariff item 2825.20.00 as lithium hydroxide.
2825.20.00Battery-Grade Lithium Hydroxide
Battery-grade lithium hydroxide is a high-purity (>99.5%) form of LiOH specifically optimized for producing nickel-manganese-cobalt (NMC) cathodes in electric vehicle batteries. As a chemically defined lithium hydroxide compound, it is classified under tariff item 2825.20.00 regardless of its specialized application.
2825.20.00High-Purity Lithium Oxide
High-purity lithium oxide (Li₂O) is a white powder used in specialty glass for optical fibers and as a dopant in ferroelectric ceramics. As a separate chemically defined compound of lithium, it is classified under tariff item 2825.20.00 as lithium oxide.
2825.20.00Lithium Hydroxide for Grease Production
Lithium hydroxide flakes for grease production are a form of LiOH designed for high-temperature lithium complex grease manufacturing. Despite the specialized application, the product remains a chemically defined lithium hydroxide and is classified under tariff item 2825.20.00.
2825.20.00Lithium Hydroxide Monohydrate
Lithium hydroxide monohydrate (LiOH·H₂O) is a crystalline powder used in lithium-ion battery cathodes and as a precursor for lithium salts. As a hydrate of lithium hydroxide, it is classified under tariff item 2825.20.00 as lithium hydroxide.
2825.20.00Lithium Hydroxide Solution 10%
A 10% aqueous solution of lithium hydroxide is used for pH control in chemical processing and leather tanning. Under Chapter 28 Note 1(b), solutions of separate chemically defined compounds in water are classified in the same heading as the compound, so this falls under tariff item 2825.20.00.
2825.20.00Lithium Oxide Powder
Lithium oxide (Li₂O) powder is an inorganic base used in glass manufacturing to lower melting points and in ceramics for fluxing properties. As a separate chemically defined compound, it is classified under tariff item 2825.20.00 as lithium oxide.
2825.20.00Micronized Lithium Hydroxide
Micronized lithium hydroxide with a particle size below 10 μm is used for spray drying in battery precursor manufacturing. The particle size does not alter the chemical definition of the product, so it remains classified under tariff item 2825.20.00 as lithium hydroxide.
2825.20.00Technical-Grade Lithium Hydroxide
Technical-grade lithium hydroxide (92-98% purity) is used for pH adjustment in wastewater treatment and as a raw material in specialty chemicals. Even at lower purity, it remains a separate chemically defined compound of lithium hydroxide and is classified under tariff item 2825.20.00.
2825.30.0099.9% Pure Vanadium Pentoxide V2O5
Electronic grade vanadium pentoxide with 99.9% purity is an anhydrous powder for thin-film deposition. As a chemically defined metal oxide, it falls under tariff item 2825.30.00, provided it is not doped for electronics.
2825.30.00Ammonium Metavanadate NH4VO3
Ammonium metavanadate (NH4VO3) is a white to pale yellow crystalline powder used as an intermediate in vanadium processing and in ink production. Although it contains an ammonium group, it is classified as a vanadium oxide/hydroxide derivative under tariff item 2825.30.00 because the vanadium-oxygen core determines its essential character.
2825.30.00Ammonium Metavanadate NH4VO3 Crystals
Ammonium metavanadate crystals are white to pale yellow solids used to produce vanadium pentoxide and in leather tanning. As a vanadium hydroxide derivative with ammonium, it is classified under tariff item 2825.30.00, consistent with the chemically defined compound criteria.
2825.30.00Anhydrous Vanadium Pentoxide Granules
Granular vanadium pentoxide (V2O5) in anhydrous, non-hygroscopic form is used in glass coloring and vanadium battery production. It is a chemically defined vanadium oxide under tariff item 2825.30.00.
2825.30.00Divanadium Pentoxide Technical Grade
Technical grade divanadium pentoxide (5V2O5·9MoO3) is used in ferrovanadium alloy production. This mixed oxide classifies as 'other' vanadium oxide under tariff item 2825.30.00 when vanadium is the predominant metal and the product is chemically defined.
2825.30.00Divanadium Tetraoxide VO2
Divanadium tetraoxide (VO2) is a blue-black powder with a reversible metal-insulator transition, making it valuable for smart windows and sensor applications. It is a chemically defined vanadium oxide, which falls under tariff item 2825.30.00 for vanadium oxides and hydroxides.
2825.30.00High-Purity Vanadium Pentoxide 99.9%
High-purity vanadium pentoxide (V2O5) at 99.9% purity is used in semiconductor doping and single-crystal growth. As a chemically defined vanadium oxide, it is classified under tariff item 2825.30.00 for vanadium oxides and hydroxides.
2825.30.00Sodium Metavanadate NaVO3·2H2O Powder
Sodium metavanadate dihydrate (NaVO3·2H2O) powder serves as a corrosion inhibitor and in ink production. This metal hydroxide derivative classifies under tariff item 2825.30.00 as a vanadium hydroxide, provided it is chemically defined per Chapter 28 notes.
2825.30.00Sodium Vanadate Na3VO4
Sodium vanadate (Na3VO4) is a white or yellowish powder used in protein phosphorylation studies and as a corrosion inhibitor. Its tetrahedral vanadate ion and hydroxide-like structure place it under tariff item 2825.30.00 as a vanadium hydroxide derivative, despite the sodium content.
2825.30.00Technical Grade Vanadium Pentoxide Flakes
Technical grade vanadium pentoxide flakes with 98-99% purity are the anhydride form of vanadium oxide. They are commonly imported for ferrovanadium production and fall under tariff item 2825.30.00 as a chemically defined inorganic metal oxide.
2825.30.00V2O5 Vanadium Pentoxide Catalyst Grade
Ultra-pure vanadium pentoxide optimized for sulfuric acid catalyst production is anhydrous V2O5. It is classified under tariff item 2825.30.00 as a vanadium oxide, meeting Chapter 28 definitions for chemically defined inorganic compounds.
2825.30.00Vanadate Basic Anhydrous Powder
Basic vanadate anhydrous powder acts as a colorant in glass and ceramics manufacturing. As a vanadium hydroxide derivative, it is covered by tariff item 2825.30.00 under the 'other' category for inorganic bases, provided it is chemically defined.
2825.30.00Vanadium Dioxide Nanoparticles
Vanadium dioxide nanoparticles are engineered for optical switching in photonics and camouflage materials. As pure VO2 in unworked powder form, they are a chemically defined vanadium oxide under tariff item 2825.30.00.
2825.30.00Vanadium Hydroxide Colloidal Solution
Colloidal vanadium hydroxide solution is used in sol-gel processing for thin films and catalysts. The dispersed hydroxide particles in water classify under tariff item 2825.30.00 as vanadium hydroxides, provided the solution is a normal method of putting up.
2825.30.00Vanadium(IV) Oxide Hydrate
Vanadium(IV) oxide hydrate is a precursor for VO2 thin films in optical devices. As a hydrated vanadium oxide, it falls under tariff item 2825.30.00 for vanadium oxides and hydroxides.
2825.30.00Vanadium Oxyhydroxide VOO H
Vanadium oxyhydroxide (VOOH) is used in battery cathodes and as a precursor for vanadium compounds in pigment production. It qualifies under tariff item 2825.30.00 as a vanadium hydroxide with a layered structure.
2825.30.00Vanadium Oxytrichloride VOCl3 Liquid
Vanadium oxytrichloride (VOCl3) is a pale yellow liquid used as a catalyst and polymerisation initiator. As a derivative of vanadium oxide, it falls under tariff item 2825.30.00 despite the chloride presence, per the chemically defined compound criteria.
2825.30.00Vanadium Pentoxide Anhydride Industrial Pack
Bulk industrial packaging of V2O5 vanadium pentoxide anhydride in 25kg fiber drums is a pure compound under tariff item 2825.30.00. It is used for steel desulfurization and alloying.
2825.30.00Vanadium Pentoxide V2O5
Vanadium pentoxide (V2O5) is a yellow to red crystalline powder used as a catalyst in sulfuric acid production and in ceramics for coloring glass and glazes. It is a chemically defined vanadium oxide under tariff item 2825.30.00.
2825.30.00Vanadium Pentoxide V2O5 Powder
High-purity vanadium pentoxide (V2O5) in fine powder form is chemically defined as the anhydride of vanadium. It meets Chapter 28 requirements for inorganic metal oxides and falls under tariff item 2825.30.00.
2825.30.00Vanadium Sesquioxide Powder
Vanadium sesquioxide powder (V2O3) is used in solid-state chemistry research and as a reducing agent. This pure oxide form is a chemically defined vanadium oxide under tariff item 2825.30.00.
2825.30.00Vanadium Trioxide V2O3
Vanadium trioxide (V2O3) is a black crystalline powder used in the production of vanadium metal and as a reagent in chemical synthesis. It is a chemically defined vanadium oxide under tariff item 2825.30.00.
2825.30.00Vanadium Trioxide V2O3 Granules
Vanadium trioxide (V2O3) granules are black powder or granular material used in vanadium metal production and as a reagent in chemical synthesis. Classified under tariff item 2825.30.00 as a vanadium oxide, this chemically defined compound is a straightforward entry.
2825.30.00Vanadyl Sulfate Hydrate VO(SO4)·2H2O
Vanadyl sulfate dihydrate (VO(SO4)·2H2O) is a blue crystalline inorganic salt used in analytical chemistry and as a catalyst precursor. Though a salt, its vanadium oxide hydroxide nature places it under tariff item 2825.30.00 as a vanadium hydroxide derivative.
2825.30.00Vanadyl Sulfate VOSO4
Vanadyl sulfate (VOSO4) is a blue crystalline compound used as a reducing agent in analytical chemistry and as an electrolyte precursor in vanadium redox flow batteries. Although formally a salt, its vanadium oxide/hydroxide character supports classification under tariff item 2825.30.00.
2825.30.00VO2 Vanadium Dioxide Thermochromic Powder
Vanadium dioxide (VO2) powder exhibits a metal-insulator transition for smart window coatings. This chemically pure vanadium oxide is classified under tariff item 2825.30.00 as 'other' vanadium oxide, per the chemically defined compound criteria.
2825.30.00VPO Vanadium Phosphorus Oxide V2O5 Base
High-purity vanadium pentoxide (V2O5) used as a precursor for vanadium-phosphorus oxide (VPO) maleic anhydride catalysts. This chemically defined vanadium oxide falls squarely under tariff item 2825.30.00 as a vanadium oxide.
2825.40.00Battery Grade Nickel Oxide Black
Battery Grade Nickel Oxide Black is a high-density black nickel oxide specifically manufactured for lithium-ion battery cathode precursors. It is a chemically defined nickel oxide falling under tariff item 2825.40.00, which covers nickel oxides and hydroxides.
2825.40.00Beta Nickel Hydroxide High Density
Beta Nickel Hydroxide High Density is a high tap density beta-Ni(OH)2 for space-constrained battery applications. It is a chemically defined nickel hydroxide, classified under tariff item 2825.40.00 for nickel oxides and hydroxides.
2825.40.00High Purity Nickel Oxide 99.99%
High Purity Nickel Oxide 99.99% is an ultra-high purity nickel oxide for electronic ceramics and PVD targets. It is a separate chemically defined compound of nickel oxide, meeting Chapter 28 Note 1(a) and classified under tariff item 2825.40.00.
2825.40.00Hydrated Nickel Oxide Technical Grade
Hydrated Nickel Oxide Technical Grade is a hydrated nickel oxide (NiO•H2O) for catalyst preparation and ceramic pigments. As a nickel oxide, it falls under tariff item 2825.40.00, which covers nickel oxides and hydroxides.
2825.40.00Nickel Hydroxide Electrode Paste Grade
Nickel Hydroxide Electrode Paste Grade is nickel hydroxide powder processed for direct mixing into battery electrode pastes. It is a chemically defined nickel hydroxide, classified under tariff item 2825.40.00 for nickel oxides and hydroxides.
2825.40.00Nickel Hydroxide for Fuel Cells
Nickel Hydroxide for Fuel Cells is ultra-high purity nickel hydroxide for alkaline fuel cell electrodes. It is a chemically defined nickel hydroxide, falling under tariff item 2825.40.00 for nickel oxides and hydroxides.
2825.40.00Nickel Hydroxide Ni(OH)2 Green Powder
Nickel Hydroxide Ni(OH)2 Green Powder is beta-nickel hydroxide powder used in rechargeable NiMH battery cathodes. It is a chemically defined nickel hydroxide, classified under tariff item 2825.40.00.
2825.40.00Nickel(II) Hydroxide Spheroidal Powder
Nickel(II) Hydroxide Spheroidal Powder is a spheroidal morphology nickel hydroxide optimized for high-capacity NiMH batteries. It is a chemically defined nickel hydroxide, falling under tariff item 2825.40.00.
2825.40.00Nickel(II) Oxide (NiO) Powder
Nickel(II) Oxide (NiO) Powder is high-purity nickel(II) oxide powder used in ceramics and battery cathode production. It is a chemically defined nickel oxide, meeting Chapter 28 Note 1(a) and classified under tariff item 2825.40.00.
2825.40.00Nickel Oxide Nanopowder 50nm
Nickel Oxide Nanopowder 50nm is a 50nm particle size nickel oxide nanopowder for thin film deposition and sensors. It is a chemically defined nickel oxide, classified under tariff item 2825.40.00 regardless of particle size.
2825.40.00Nickel Oxide Sintering Powder
Nickel Oxide Sintering Powder is coarse nickel oxide powder for high-temperature ceramic sintering applications. It is a chemically defined nickel oxide, falling under tariff item 2825.40.00 for nickel oxides and hydroxides.
2825.40.00Nickel Oxyhydroxide NiOOH Powder
Nickel Oxyhydroxide NiOOH Powder is nickel oxyhydroxide used in high-drain NiCd and NiMH battery applications. It is a nickel hydroxide derivative, classified under tariff item 2825.40.00 for nickel oxides and hydroxides.
2825.40.00Raney Nickel Oxide Precursor
Ranney Nickel Oxide Precursor is a special purity nickel oxide used as precursor for Raney nickel hydrogenation catalysts. It is a chemically defined nickel oxide, classified under tariff item 2825.40.00.
2825.40.00Spherical Nickel Hydroxide 10 Micron
Spherical Nickel Hydroxide 10 Micron is a 10 micron D50 spherical nickel hydroxide for spray drying battery cathode production. It is a chemically defined nickel hydroxide, falling under tariff item 2825.40.00.