Other
Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included. > Other > Other
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Subheadings
Products classified under Tariff item 3815.90
Aluminum Chlorohydrate Catalyst
Catalytic-grade aluminum chlorohydrate used in polymerization processes for water treatment resins. This product consists entirely of inorganic aluminum compounds acting as reaction accelerators, falling under tariff item 3815.90.00.
3815.90.00Ammonium Molybdate Catalyst
Ammonium heptamolybdate ((NH4)6Mo7O24) is used as a selective oxidation catalyst in acrylic acid production. It is a wholly inorganic molybdenum-based catalytic preparation. This places it under tariff item 3815.90.00 for other catalytic preparations.
3815.90.00Bismuth Molybdate Selective Oxidation Catalyst
Bismuth molybdate (Bi2Mo3O12) is a mixed metal oxide catalyst used to selectively oxidize propylene into acrolein. Its multilayer structure provides high selectivity in this reaction. As a wholly inorganic catalytic preparation, it falls under tariff item 3815.90.00 for reaction initiators and catalytic preparations not elsewhere specified.
3815.90.00Bismuth Nitrate Catalyst
Bismuth nitrate is used as a catalytic preparation in organic synthesis, including esterification and oxidation reactions. It acts as a reaction initiator consisting wholly of inorganic bismuth compounds. This places it under tariff item 3815.90.00 for other catalytic preparations.
3815.90.00Bismuth Subnitrate Catalytic Promoter
Bismuth subnitrate serves as a promoter in automotive catalytic converters and NOx reduction systems, enhancing thermal stability. This basic bismuth nitrate is a wholly inorganic reaction accelerator. It is classified under tariff item 3815.90.00 as a catalytic preparation.
3815.90.00Bismuth Triflate Reaction Initiator
Bismuth(III) triflate is a water-tolerant Lewis acid catalyst used in aldol reactions and glycosylations. This inorganic bismuth compound acts as a reaction initiator in organic synthesis. It is classified under tariff item 3815.90.00 for other catalytic preparations.
3815.90.00Ceria-Zirconia Three-Way Catalyst Washcoat
Ceria-stabilized zirconia washcoat slurry for automotive three-way catalysts, promoting oxygen storage and catalytic conversion of exhaust gases. This preparation is a catalytic component, falling under heading 38.15 as a reaction accelerator.
3815.90.00Cerium Oxide Polishing Catalyst
Ceria nanoparticles catalyzing chemical mechanical planarization in semiconductor manufacturing. This inorganic reaction accelerator falls under tariff item 3815.90.00 as a catalytic preparation.
3815.90.00Chromium Oxide Polymer Catalyst
Phillips catalyst (CrO3 on silica) precursor for HDPE production. This wholly inorganic composition falls under tariff item 3815.90.00 as a catalytic preparation.
3815.90.00Cobalt Molybdate Hydrotreating Catalyst
CoMo/alumina catalyst precursor for diesel hydrodesulfurization. This oxide form qualifies as wholly inorganic under tariff item 3815.90.00 as a catalytic preparation.
3815.90.00Copper Chromite Catalyst for Ester Hydrogenation
Copper chromite catalyst used for high-pressure hydrogenation of esters to alcohols in chemical manufacturing. This catalytic preparation accelerates organic reactions and falls under heading 38.15.
3815.90.00Enzyme Immobilized Glucose Isomerase
Immobilized glucose isomerase enzyme catalyst used for high-fructose corn syrup production. Despite its biological origin, this enzyme preparation acts as a catalytic preparation, qualifying under heading 38.15.
3815.90.00Hydrotreating Cobalt-Molybdenum Catalyst
Cobalt-molybdenum on alumina catalyst for hydrodesulfurization in diesel hydrotreating units. This catalytic preparation accelerates the removal of sulfur from petroleum fractions, falling under heading 38.15.
3815.90.00Iron Oxide Dehydrogenation Catalyst
Alpha-Fe2O3 catalyst for ethylbenzene dehydrogenation to styrene. This product consists wholly of inorganic iron oxides, qualifying under tariff item 3815.90.00 as a catalytic preparation.
3815.90.00Magnesium Oxide Polymerization Catalyst
High-purity MgO powder serving as catalyst in polypropylene production. This wholly inorganic composition qualifies under tariff item 3815.90.00 as a reaction initiator.
3815.90.00Manganese Dioxide Oxidation Catalyst
Electrolytic MnO2 used as depolarizer catalyst in alkaline batteries. This inorganic reaction accelerator falls under tariff item 3815.90.00 as a catalytic preparation.
3815.90.00Mercuric Sulfate Catalyst
Mercuric sulfate (HgSO4) is used as a catalyst in acetylene hydration to produce acetone. This wholly inorganic mercury compound acts as a reaction initiator. It is classified under tariff item 3815.90.00 as a catalytic preparation.
3815.90.00Mercury Chloride Catalyst
Mercuric chloride (HgCl2) preparation used as a catalyst in vinyl chloride production and organic synthesis reactions. This inorganic mercury-based reaction initiator falls under tariff item 3815.90.00 as a catalytic preparation not elsewhere specified.
3815.90.00Mercury Oxide Reaction Initiator
Red mercuric oxide (HgO) prepared for use as a catalyst in laboratory-scale organic reactions and dehydrogenation processes. This inorganic mercury compound is classified as a reaction initiator under tariff item 3815.90.00.
3815.90.00Molybdenum Disulfide Catalyst
High-purity molybdenum disulfide (MoS2) used as a catalyst in hydrotreating and hydrocracking operations in refineries. This wholly inorganic molybdenum catalytic preparation falls under tariff item 3815.90.00.
3815.90.00Molybdenum Trioxide Catalyst
Pure molybdenum trioxide (MoO3) used as a catalyst in petroleum refining processes like hydrodesulfurization. This inorganic compound falls under tariff item 3815.90.00 as a catalytic preparation consisting wholly of inorganic substances.
3815.90.00Molybdic Acid Catalyst
Molybdic acid (H2MoO4) in catalytic grade used for oxidation reactions in chemical manufacturing. This wholly inorganic molybdenum compound qualifies under tariff item 3815.90.00 as a reaction accelerator preparation.
3815.90.00Nickel Oxide Hydrogenation Catalyst
NiO powder reduced in-situ for fat hydrogenation in edible oil processing. This inorganic reaction initiation product falls under tariff item 3815.90.00 as a catalytic preparation.
3815.90.00Silica-Alumina Cracking Catalyst
Amorphous silica-alumina gel catalyst for fluid catalytic cracking in refineries. This wholly inorganic composition qualifies under tariff item 3815.90.00 as a catalytic preparation.
3815.90.00Sodium Molybdate Dihydrate Catalyst
Catalytic-grade sodium molybdate dihydrate (Na2MoO4·2H2O) used in epoxidation reactions and as a corrosion inhibitor catalyst. This inorganic molybdenum salt falls under tariff item 3815.90.00 for reaction accelerator preparations.
3815.90.00Sodium Perborate Accelerator
Anhydrous sodium perborate, a wholly inorganic compound used as an oxygen bleach catalyst in epoxy resin curing systems. It accelerates the cross-linking reaction by releasing active oxygen, making it a reaction accelerator of heading 38.15.
3815.90.00Titanium Dioxide Accelerator
Nano-grade titanium dioxide used as a photoinitiator in UV-curable coatings. This inorganic catalytic preparation promotes radical polymerization when exposed to UV light, qualifying it as a reaction initiator under heading 38.15.
3815.90.00Tungsten Carbide Catalyst Powder
Tungsten carbide powder is used as a heterogeneous catalyst in Fischer-Tropsch synthesis and hydrocracking. It consists wholly of inorganic tungsten compounds designed for reaction acceleration. This places it under tariff item 3815.90.00 for other catalytic preparations.
3815.90.00Tungsten Disulfide Solid Lubricant Catalyst
Tungsten disulfide nanoparticles function as both a solid lubricant and a catalyst in tribochemical reactions. This inorganic tungsten compound accelerates reactions and is used in aerospace and high-performance applications. It is classified under tariff item 3815.90.00 as a catalytic preparation.
3815.90.00Tungsten Nitride Ammonia Synthesis Catalyst
Tungsten nitride (W2N) is a catalytic phase for high-pressure ammonia synthesis, offering an alternative to the Haber-Bosch process. This inorganic nitride acts as a reaction accelerator. It falls under tariff item 3815.90.00 for other catalytic preparations.
3815.90.00Tungsten Oxide Hydrodesulfurization Catalyst
Tungsten oxide (WO3) catalysts, promoted with nickel or cobalt, are used for hydrodesulfurization of petroleum fractions. When consisting wholly of inorganic tungsten compounds without organic binders, they qualify as catalytic preparations. This places them under tariff item 3815.90.00.
3815.90.00Tungsten Phosphide Hydrogenation Catalyst
Tungsten phosphide (WP) nanoparticles are emerging as a non-noble metal catalyst for hydrodeoxygenation of pyrolysis oils. This inorganic tungsten phosphide acts as a reaction initiator with high activity. It is classified under tariff item 3815.90.00 for other catalytic preparations.
3815.90.00Vanadium Boride SCR Catalyst Promoter
Vanadium boride (VB2) is used as a promoter in selective catalytic reduction (SCR) systems for NOx control. This inorganic vanadium compound accelerates ammonia-SCR reactions, especially at low temperatures. It is classified under tariff item 3815.90.00 as a catalytic preparation.
3815.90.00Vanadium Pentoxide Catalyst
Vanadium pentoxide (V2O5) is the primary catalyst for sulfuric acid production via the contact process. It is a wholly inorganic vanadium-based reaction accelerator. This qualifies it for tariff item 3815.90.00 as a catalytic preparation.
3815.90.00Vanadium Pentoxide SCR Catalyst
Vanadium pentoxide-based selective catalytic reduction (SCR) catalyst used to reduce nitrogen oxide emissions in power plant flue gases. This wholly inorganic catalytic preparation accelerates the reaction between NOx and ammonia, falling under heading 38.15.
3815.90.00Vanadium Phosphate Catalyst
Vanadium phosphorus oxide (VPO) catalyst is used in n-butane selective oxidation to maleic anhydride. This inorganic vanadium compound functions as a reaction accelerator with high selectivity. It is classified under tariff item 3815.90.00 for other catalytic preparations.
3815.90.00Vanadium Silicide Metathesis Catalyst
Vanadium silicide (V3Si) is an intermetallic compound used in olefin metathesis reactions under high-pressure conditions. This wholly inorganic vanadium-based catalytic preparation offers unique activity for propene disproportionation. It falls under tariff item 3815.90.00.
3815.90.00Zeolite Y Reaction Initiator
Synthetic zeolite Y faujasite used as a shape-selective catalyst in hydrocarbon cracking processes. This aluminosilicate framework acts as a reaction initiator by providing active sites for catalytic reactions, qualifying under heading 38.15.
3815.90.00Zinc Stearate Powder
Zinc stearate powder used as a lubricant and release agent in plastics and rubber manufacturing. Although described as a catalytic preparation in the source, zinc stearate is a metal salt of a fatty acid and may not function as a reaction accelerator; classification under 3815.90.00 requires verification of catalytic activity.
3815.90.00Zirconium Oxide Solid Acid Catalyst
Sulfated zirconia solid acid catalyst used for alkylation reactions in gasoline production. This inorganic zirconia-based preparation accelerates hydrocarbon reactions, qualifying as a catalytic preparation under heading 38.15.