Magnesium Tungstate
Magnesium tungstate (MgWO4) is a crystalline salt used in scintillation detectors and phosphors. It is classified under tariff item 2841.80.00 as a tungstate (wolframate), being a separate chemically defined salt of an oxometallic acid. The product meets Chapter 28 criteria for inorganic salts and is not excluded by the chapter's legal notes.
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 |
PGA flags (1)Show detailsHide detailsHCActive Pharmaceutical IngredientsMay be required
- HC
Active Pharmaceutical Ingredients · May be required
May require HC Active Pharmaceutical Ingredients depending on intended use (HC13) and Canadian product category (HC01). Matching criteria: Starts With 2841. Logic: MATCH IF (Valid HS Code) AND (Intended Use Code) AND (Valid Canadian Product Category).
CBSA Single Window matching criteria, unknown
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the salt is not a tungstate but another oxometallic salt
Other salts of oxometallic acids may be classified here.
If the product is used as a luminophore
Inorganic products of a kind used as luminophores are excluded from Chapter 28 and fall under heading 32.06.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Confirm the product is a pure chemical compound, not a mixture, to stay within this tariff item
• Provide a safety data sheet (SDS) and technical specification to customs
• Check if the goods require any end-use certificates, especially for scintillator applications
Related Products under Tariff item 2841.80.00
Ammonium 12-Tungstophosphate
Ammonium 12-tungstophosphate is a heteropolyacid salt used as an industrial catalyst. As a complex tungstate of ammonium, it falls under tariff item 2841.80.00. The product is a chemically defined compound.
Ammonium Metatungstate
Ammonium metatungstate (AMT) is a soluble white powder with the formula (NH4)6[H2W12O40]·xH2O, used in catalysts, fire-retardant treatments, and electroplating solutions. It is an ammonium salt of tungstic acid in its polymeric metatungstate form, falling squarely within the tungstates heading.
Ammonium Metatungstate Granules
Ammonium metatungstate granules are a spray-dried form of ammonium metatungstate, a complex ammonium salt of tungstic acid. They are used primarily as a precursor for producing tungsten powder and in thermal spraying applications. As an ammonium tungstate, it falls under tariff item 2841.80.00.
Ammonium Paratungstate
Ammonium paratungstate (APT) is a white crystalline powder with the formula (NH4)10[H2W12O42]·4H2O, used primarily as an intermediate in the production of tungsten metal and tungsten carbide. As an ammonium salt of tungstic acid in its paratungstate form, it is classified as a tungstate under this tariff item.
Ammonium Silicotungstate
Ammonium silicotungstate ((NH4)4SiW12O40) is a complex tungstate salt used in ion-exchange resins, analytical chemistry, and as a catalyst. As a complex salt containing both silicon and tungsten, it is classified as a tungstate under this tariff item, consistent with the chapter note on double or complex salts.
Ammonium Tungstate Hydrate Flakes
Flaked ammonium tungstate hydrate ((NH4)2O·12WO3·10H2O) is a hydrated form of ammonium tungstate used in analytical reagents and plating baths. The hydrated salt form remains classified as an ammonium tungstate under this tariff item, as hydration does not alter its chemical identity as a tungstate salt.