Duty Rate (from China)
Subheadings
Products classified under Tariff item 2841.90
ACS Reagent Potassium Stannate
ACS reagent grade potassium stannate (K2SnO3) is a chemically defined stannate salt used in analytical chemistry. It is a salt of stannic acid, an oxometallic acid, and falls under the 'Other' tariff item for salts of oxometallic acids.
2841.90.00Aluminum Sodium Oxide (Beta-Alumina)
Beta-alumina (NaAl11O17) is a solid electrolyte powder used in sodium-sulfur batteries. Its pure aluminate structure qualifies it as an oxometallic salt under tariff item 2841.90.00.
2841.90.00Ammonium Metavanadate
Ammonium metavanadate ((NH4)VO3) is a white crystalline powder used as a catalyst in the production of sulfuric acid, in ceramics, and as a drying agent in inks and paints. It is a salt of vanadic acid, an oxometallic acid, and meets the Chapter 28 definition of a separate chemically defined compound.
2841.90.00Ammonium Perrhenate Catalyst Precursor Flakes
Ammonium perrhenate in flake form (NH4ReO4) is a salt of perrhenic acid, a peroxometallic acid, used as a catalyst precursor for hydrocracking. It is a separate chemically defined compound under Chapter 28, falling under the 'Other' tariff item.
2841.90.00Ammonium Perrhenate (NH4ReO4) Powder
Ammonium perrhenate powder (NH4ReO4) is the ammonium salt of perrhenic acid, a peroxometallic acid, used in catalysts and alloy production. It is a separate chemically defined compound under Chapter 28, falling under the 'Other' tariff item.
2841.90.00Anhydrous Potassium Stannate
Anhydrous potassium stannate (K2SnO3) is a high-purity, water-free compound used in advanced electroplating solutions to produce corrosion-resistant tin coatings. It is classified under tariff item 2841.90.00 as a potassium salt of stannic acid, an oxometallic acid salt.
2841.90.00Barium Aluminate Crystals
Barium aluminate (BaAl2O4) single crystals grown via the Czochralski method are used for laser host materials and scintillators. They fall under tariff item 2841.90.00 as aluminate salts, provided they are unworked per Chapter notes.
2841.90.00Basic Zinc Chromate
Basic zinc chromate (ZnCrO4·Zn(OH)2) is a hydrated chromate salt used as an anti-corrosive pigment in alkyd primers. It is classified under tariff item 2841.90.00 as a chromate salt of an oxometallic acid, meeting Chapter 28 criteria.
2841.90.00Bismuth Vanadate
Bismuth vanadate (BiVO4) is a bright yellow pigment used in high-performance coatings and artists' colors. It is a salt of vanadic acid and qualifies as a separate chemically defined compound under Chapter 28, falling under the 'Other' tariff item for salts of oxometallic acids.
2841.90.00Calcium Aluminate Cement
Calcium aluminate cement, primarily composed of 11CaO·7Al2O3 and 12CaO·7Al2O3 phases, is a hydraulic binder for high-temperature refractory applications. It qualifies as an aluminate under tariff item 2841.90.00 as a salt of oxometallic acid.
2841.90.00Calcium Vanadate
Calcium vanadate (Ca3(VO4)2) is used in ceramics and as a catalyst component. It is a salt of vanadic acid and meets the Chapter 28 criteria for a separate chemically defined compound, placing it under the 'Other' tariff item for salts of oxometallic acids.
2841.90.00Cerium-Doped Yttrium Aluminate
Cerium-doped yttrium aluminate (Y3Al5O12:Ce) is a phosphor powder for LED lighting and scintillators. As a chemically defined aluminate under tariff item 2841.90.00, doped variants remain here unless prepared as luminophores.
2841.90.00Chrome Yellow Lead Chromate
Chrome yellow, or pure lead chromate (PbCrO4), is an opaque yellow pigment used in traffic paints and artists' colors. It is classified under tariff item 2841.90.00 as a lead chromate salt of an oxometallic acid, supplied as micro-particles.
2841.90.00Cobalt Aluminate Blue
Cobalt aluminate (CoAl2O4) is a high-temperature stable blue pigment powder used for ceramics and glass coloring. As a pure aluminate salt under tariff item 2841.90.00, it is classified before pigment preparation.
2841.90.00Electroless Plating Grade Potassium Stannate
Electroless plating grade potassium stannate is optimized for stable bath life in printed circuit board manufacturing, delivering consistent tin deposition rates for ENIG processes. It is a chemically defined potassium salt of stannic acid, falling under tariff item 2841.90.00.
2841.90.00High-Purity Ammonium Perrhenate for Superalloy Production
High-purity ammonium perrhenate (>99.99% Re) is used as a raw material for producing rhenium powder for nickel-based superalloys in turbine blades. It is a separate chemically defined compound under Chapter 28, falling under the 'Other' tariff item for salts of peroxometallic acids.
2841.90.00High Purity Potassium Stannate 99%
High purity potassium stannate at 99% purity is supplied as crystals for laboratory and semiconductor applications requiring ultra-clean stannate sources. As a chemically defined potassium salt of stannic acid, it is classified under tariff item 2841.90.00.
2841.90.00Industrial Potassium Stannate Flakes
Industrial potassium stannate flakes are a flake form of the compound designed for easier dissolution in large-scale plating operations, reducing dust hazards in bulk handling. The physical form does not affect classification, and it remains a potassium salt of stannic acid under tariff item 2841.90.00.
2841.90.00Iron Aluminate Pigment
Iron aluminate (FeAl2O4) is a synthetic spinel pigment for ceramic glazes, providing a blue-black color. It is a chemically defined aluminate for tariff item 2841.90.00, before pigment preparation, supplied as micronized powder.
2841.90.00Lanthanum Aluminate Substrate
Lanthanum aluminate (LaAlO3) single crystal substrates are used for epitaxial thin-film growth in superconductors. Unworked crystals under tariff item 2841.90.00 are classified per notes on doped elements, supplied as 2-inch diameter wafers.
2841.90.00Lead Metavanadate
Lead metavanadate (Pb(VO3)2) is used in specialty glasses and ceramics. It is a salt of metavanadic acid, an oxometallic acid, and qualifies as a separate chemically defined compound under Chapter 28, falling under the 'Other' tariff item.
2841.90.00Lithium Aluminate Powder
Lithium aluminate (LiAlO2) is a fine, chemically defined inorganic powder used as a solid electrolyte in lithium-ion batteries and as a breeder blanket material in fusion reactors. As an aluminate salt of an oxometallic acid, it is classified under tariff item 2841.90.00, which covers other salts of oxometallic or peroxometallic acids.
2841.90.00Magnesium Aluminate Spinel
Magnesium aluminate spinel (MgAl2O4) is a synthetic inorganic powder or granular material used for transparent ceramics in armor and optical windows. It qualifies as an aluminate salt under tariff item 2841.90.00, provided it is chemically defined and not yet sintered into ceramic articles.
2841.90.00Manganese Vanadate
Manganese vanadate (Mn3(VO4)2) functions as a catalyst in oxidation processes. It is a salt of vanadic acid and meets the Chapter 28 definition of a separate chemically defined compound, placing it under the 'Other' tariff item for salts of oxometallic acids.
2841.90.00Mixed Rare Earth Aluminate
Mixed rare earth aluminate garnet powder, such as (Gd,Y)3Al5O12, is used for phosphors and laser applications. It is classified under tariff item 2841.90.00 as an aluminate salt, provided it is chemically defined and does not fall under heading 28.46 for rare-earth compounds.
2841.90.00Potassium Aluminate Solution
Potassium aluminate (KAlO2) is an alkaline solution used in paper manufacturing to precipitate silica and improve retention. As a chemically defined aluminate salt, it is classified under tariff item 2841.90.00, which covers other salts of oxometallic acids.
2841.90.00Potassium Metavanadate
Potassium metavanadate (KVO3) is an inorganic salt derived from metavanadic acid, used in analytical chemistry and pigment production. It is a separate chemically defined compound under Chapter 28, falling under the 'Other' tariff item for salts of oxometallic acids.
2841.90.00Potassium Stannate for Glass Coating
Potassium stannate for glass coating is a specialty formulation used as a tin source for transparent conductive oxide coatings on glass substrates. It is classified under tariff item 2841.90.00 as the base potassium stannate compound before application.
2841.90.00Potassium Stannate Trihydrate
Potassium stannate trihydrate (K2SnO3·3H2O) is a white crystalline powder used primarily as a source of stannate ions in chemical plating processes for metals. It is specifically the hydrated form of the potassium salt of stannic acid, classified under tariff item 2841.90.00.
2841.90.00Research Grade Ammonium Perrhenate 99.99% Pure
Research-grade ammonium perrhenate (99.99% pure) is used for scientific research and rhenium thin film deposition. It is a separate chemically defined compound under Chapter 28, falling under the 'Other' tariff item for salts of peroxometallic acids.
2841.90.00Sodium Aluminate Flakes
Anhydrous sodium aluminate in flake form is used for zeolite synthesis and alumina extraction. It is a chemically defined aluminate salt, classified under tariff item 2841.90.00, and preferred over solutions for long-distance shipping due to stability.
2841.90.00Sodium Aluminate Powder
Sodium aluminate (NaAlO2) is a water-soluble inorganic salt derived from aluminum oxide, used in water treatment to adjust pH and remove impurities. It is classified under tariff item 2841.90.00 as an aluminate salt of an oxometallic acid.
2841.90.00Sodium Metavanadate
Sodium metavanadate (NaVO3) is a white crystalline salt of vanadic acid used in inks, photography, and as a corrosion inhibitor. It is a separate chemically defined compound under Chapter 28, falling under the 'Other' tariff item for salts of oxometallic acids.
2841.90.00Sodium Orthovanadate
Sodium orthovanadate (Na3VO4) is a salt of orthovanadic acid, widely used in biochemical research as a protein tyrosine phosphatase inhibitor. It is a separate chemically defined compound under Chapter 28, falling under the 'Other' tariff item for salts of oxometallic acids.
2841.90.00Stabilized Potassium Stannate Solution Precursor
Stabilized potassium stannate solution precursor is a powder precursor for preparing stabilized potassium stannate solutions in plating lines. It remains classified under tariff item 2841.90.00 as a solid salt, not a solution, preventing precipitation in concentrated baths.
2841.90.00Strontium Aluminate Phosphor
Strontium aluminate (SrAl2O4:Eu,Dy) is a long-persistence luminescent powder doped with europium and dysprosium, used in glow-in-the-dark paints. It is classified under tariff item 2841.90.00 as a chemically defined aluminate, provided the dopants do not alter its essential character.
2841.90.00Technical Grade Ammonium Perrhenate 99.5% Re
Technical-grade ammonium perrhenate (99.5% Re) is used in petroleum reforming catalysts and alloy production. It is a separate chemically defined compound under Chapter 28, falling under the 'Other' tariff item for salts of peroxometallic acids.
2841.90.00Technical Grade Potassium Stannate
Technical grade potassium stannate is a commercial powder (typically 40-60% K2SnO3) used for immersion tin plating in electronics manufacturing. It qualifies for tariff item 2841.90.00 as the designated potassium salt of stannic acid.
2841.90.00Zinc Aluminate Catalyst
Zinc aluminate (ZnAl2O4) is a catalyst support for dehydrogenation reactions in petrochemicals, supplied as extruded pellets. It is classified under tariff item 2841.90.00 as an aluminate salt, unless it is a prepared catalyst of heading 38.15.
2841.90.00Zinc Vanadate
Zinc vanadate (Zn3(VO4)2) is a complex vanadate salt used as a corrosion-resistant pigment in paints. It is a separate chemically defined compound under Chapter 28, falling under the 'Other' tariff item for salts of oxometallic acids.