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Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes) and their compounds; mixtures and residues containing these products. > Other > Other
Duty Rate (from China)
Subheadings
Products classified under Tariff item 2841.90.00
ACS Reagent Potassium Stannate
Potassium stannate (K2SnO3) is a white crystalline powder used in electroplating solutions for corrosion-resistant tin coatings. As a salt of stannic acid, it is classified under tariff item 2841.90.00 for other salts of oxometallic acids.
Ammonium Metavanadate
Ammonium metavanadate ((NH4)VO3) is a white crystalline powder used as a catalyst in the production of sulfuric acid and in the manufacture of inks, dyes, and ceramics. As a salt of vanadic acid, it falls under tariff item 2841.90.00 for other salts of oxometallic or peroxometallic acids.
Ammonium Perrhenate Catalyst Precursor Flakes
Ammonium perrhenate in flake form (NH4ReO4) is a key precursor for producing rhenium catalysts and superalloys. As a salt of perrhenic acid, it is classified under tariff item 2841.90.00 for other salts of oxometallic or peroxometallic acids.
Ammonium Perrhenate (NH4ReO4) Powder
Ammonium perrhenate powder (NH4ReO4) is the ammonium salt of perrhenic acid, appearing as a white crystalline powder used in catalyst production and electronics. It is a chemically defined compound under Chapter 28, classified under tariff item 2841.90.00.
Bismuth Vanadate
Bismuth vanadate (BiVO4) is a bright yellow pigment used in high-performance coatings, plastics, and artists' colors due to its excellent heat and light stability. As a vanadate salt, it is classified under tariff item 2841.90.00 for other salts of oxometallic acids.
Calcium Vanadate
Calcium vanadate (Ca3(VO4)2) is an inorganic compound used in ceramics, catalysts, and as a phosphor precursor. It is a salt of vanadic acid and meets the Chapter 28 definition of a chemically defined compound, placing it under tariff item 2841.90.00.
High-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. As a salt of perrhenic acid, it falls under tariff item 2841.90.00 for other oxometallic acid salts.
Lead Metavanadate
Lead metavanadate (Pb(VO3)2) is a yellow-orange powder used in specialty glasses, ceramics, and as a catalyst in chemical reactions. As a salt of metavanadic acid, it falls under tariff item 2841.90.00 for other oxometallic acid salts.
Manganese Vanadate
Manganese vanadate (Mn3(VO4)2) is a dark-colored powder used as a catalyst in oxidation processes and in the production of ceramics. It is a chemically defined vanadate salt, qualifying for tariff item 2841.90.00 under Chapter 28.
Potassium Metavanadate
Potassium metavanadate (KVO3) is a white crystalline salt used in analytical chemistry, pigment production, and as a corrosion inhibitor. As a vanadate salt, it is classified under tariff item 2841.90.00 for other salts of oxometallic acids.
Research Grade Ammonium Perrhenate 99.99% Pure
Research-grade ammonium perrhenate with 99.99% purity is used in scientific research and rhenium thin film deposition. It meets Chapter 28 Note 1 criteria for chemically defined compounds and is classified under tariff item 2841.90.00.
Sodium Metavanadate
Sodium metavanadate (NaVO3) is a white crystalline powder used in inks, photography, corrosion inhibition, and as a catalyst. It is a salt of vanadic acid and meets the Chapter 28 criteria for chemically defined compounds, placing it under tariff item 2841.90.00.
Sodium Orthovanadate
Sodium orthovanadate (Na3VO4) is a salt of orthovanadic acid used in biochemical research as a protein tyrosine phosphatase inhibitor. As a vanadate salt, it is classified under tariff item 2841.90.00 for other salts of oxometallic acids.
Technical Grade Ammonium Perrhenate 99.5% Re
Technical-grade ammonium perrhenate with 99.5% rhenium content is used in petroleum reforming catalysts and alloy production. As a salt of perrhenic acid, it is classified under tariff item 2841.90.00 for other salts of oxometallic acids.
Zinc Vanadate
Zinc vanadate (Zn3(VO4)2) is a complex vanadate salt used as a corrosion-resistant pigment in paints and coatings. It meets the Chapter 28 definition of a chemically defined compound and falls under tariff item 2841.90.00 for other oxometallic acid salts.