Phosphotungstic Acid Sodium Salt
Sodium phosphotungstate is a complex tungstate salt used in analytical chemistry for protein precipitation. Despite containing phosphate, it is classified as a tungstate under heading 28.41 due to its tungstate core structure.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
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Related Products under Tariff item 2841.80.00
Ammonium Metatungstate Granules
Ammonium metatungstate granules are a water-soluble ammonium salt of tungstic acid, conforming to the chemical definition of a tungstate. The spray-dried form ensures uniform particle size for consistent tungsten powder production and thermal spraying applications.
Ammonium Tungstate Powder
Ammonium tungstate powder is an ammonium salt of tungstic acid, classified as a tungstate under heading 28.41. It serves as a key precursor in the production of tungsten carbide for cutting tools and as a source of tungsten in various chemical processes.
Barium Tungstate Precipitate
Barium tungstate precipitate is a chemically defined inorganic salt of tungstic acid, falling under the tungstates classification. Its insolubility makes it valuable in X-ray contrast media and as a white pigment with stable opacity.
Calcium Tungstate Powder
Calcium tungstate powder is a chemically defined tungstate salt used as a scintillator material in medical imaging detectors. Its high density and luminescent properties make it suitable for radiation detection applications.
Cerium Tungstate Catalyst
Cerium tungstate catalyst is a chemically defined tungstate of cerium, classified under heading 28.41. Its high surface area structure makes it effective as a heterogeneous catalyst in oxidation reactions.
Disodium Tungstate Anhydrous
Disodium tungstate anhydrous is a high-purity alkali metal tungstate salt, classified under heading 28.41. It is used as a reagent in protein crystallization and as a corrosion inhibitor in various industrial applications.