Technical Grade Ammonium Heptamolybdate
Technical grade ammonium heptamolybdate is used in petroleum refining catalysts. Classified in HTS 2841.70.10.00 for ammonium molybdates, chemically defined per subheading note.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If supported catalysts
Supported catalysts with precious metals or base metals go to 3815, not pure salts.
If misidentified as silicates
Material composition error could shift to silicates in 2839.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Specify 'chemically defined' in entry docs per 2852.10 note analogy; watch for TSCA registration
• Common issue: impurities pushing to mixtures in 3824
Related Products under HTS 2841.70.10.00
Ammonium Heptamolybdate
Ammonium heptamolybdate (NH4)6Mo7O24·4H2O is a white crystalline powder used as a precursor in molybdenum metal production and as a catalyst in chemical reactions. It falls under HTS 2841.70.10.00 as it is a molybdate salt of ammonium, specifically an oxometallic acid salt per Chapter 28 notes.
Ammonium Paramolybdate
Ammonium paramolybdate ((NH4)6Mo7O24) is a key industrial chemical for pigment production and alloy manufacturing. Classified under HTS 2841.70.10.00 as an ammonium molybdate, meeting oxometallic salt criteria in Chapter 28.
Ammonium Tetramolybdate
Ammonium tetramolybdate (NH4)2Mo4O13 is utilized in flame retardants and corrosion inhibitors. It qualifies for HTS 2841.70.10.00 as a peroxometallic/oxometallic salt of ammonium per HTS hierarchy.
Ammonium Molybdate Tetrahydrate
Ammonium molybdate tetrahydrate (NH4)6Mo7O24·4H2O serves as a reagent in analytical chemistry and nutrient in agriculture. Falls under HTS 2841.70.10.00 as ammonium molybdate salt.
Ammonium Molybdate for Pigment Production
Specialty ammonium molybdate used in manufacturing molybdenum pigments for paints. HTS 2841.70.10.00 applies as it's an ammonium salt of molybdic acid.
Lab Grade Ammonium Paramolybdate
High-purity lab grade ammonium paramolybdate for phosphorus testing in water analysis. Under HTS 2841.70.10.00 as chemically defined ammonium molybdate.