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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If impure or used as fertilizer
Fertilizer-grade ammonium molybdates excluded from Chapter 28 per chapter note and classified in Chapter 31 as mineral/chemical fertilizers.
If tungstates instead of molybdates
Tungstate salts of ammonium fall under separate subheading 2841.80, not molybdates.
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Import Tips & Compliance
• Verify purity certificate to confirm 'chemically defined' status per Chapter 28 Note 1; ensure SDS includes CAS 12027-67-7
• Common pitfall: mislabeling as fertilizer-grade shifts to Chapter 31
Related Products under HTS 2841.70.10.00
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.
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.
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.