Ammonium Heptamolybdate Tetrahydrate
Crystalline ammonium heptamolybdate tetrahydrate ((NH4)6Mo7O24·4H2O), a soluble source of molybdenum for fertilizers and reagents. While a molybdate salt, pure forms are sometimes associated with HTS 2825.70.00.00 if misclassified as hydroxide-derived; primarily 2841. Used in analytical chemistry.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as molybdate salt
Ammonium molybdates are specifically under 2841 for metal molybdates per heading notes, not oxides.
If for retail fertilizer mixtures
Molybdenum compounds in fertilizers fall under Chapter 31; Chapter 28 note excludes them.
If phosphomolybdate complex
Complex phosphomolybdates are vanadates/molybdates in 2835, not simple oxides.
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Import Tips & Compliance
• Confirm if truly oxide/hydroxide vs salt to avoid 2841 reclassification; include solubility data in docs
• Pitfall: agricultural use may trigger Chapter 31 scrutiny
Related Products under HTS 2825.70.00.00
Molybdenum Trioxide Powder (MoO3)
Pure molybdenum trioxide (MoO3) in fine powder form, used as a precursor in molybdenum metal production and catalyst manufacturing. It is classified under HTS 2825.70.00.00 as a chemically defined molybdenum oxide. This inorganic compound meets Chapter 28 definitions for metal oxides.
Molybdenum Dioxide Powder (MoO2)
Molybdenum dioxide (MoO2) powder, an intermediate in reduction processes for pigment and alloy production. Classified in HTS 2825.70.00.00 as it is a chemically defined inorganic molybdenum oxide. Used in electronics and ceramics for its conductive properties.
Molybdic Acid (Molybdenum Hydroxide)
Molybdic acid or hydrated molybdenum trioxide (H2MoO4), used in ceramics and as a catalyst precursor. Falls under HTS 2825.70.00.00 as molybdenum hydroxides per the heading. Chemically defined per Chapter 28 notes.
Molybdenum Blue Oxide
Reduced molybdenum oxide (MoO2-MoO3 mix), known as molybdenum blue, used in steel alloying. Classified under HTS 2825.70.00.00 as mixed molybdenum oxides, chemically defined. Key in powder metallurgy.
Technical Grade Molybdenum Trioxide
Technical grade MoO3 with 99% purity, for lubricant additives and pigments. HTS 2825.70.00.00 covers this molybdenum oxide used in industrial applications. Meets inorganic base oxide definition.
Molybdenum Pentoxide
Molybdenum(VI) oxide (MoO3, often called pentoxide in trade), pure crystalline form for research. Precisely HTS 2825.70.00.00 as chemically defined molybdenum oxide. Used in thin-film deposition.