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Ammonium Heptamolybdate
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Ammonium Heptamolybdate

Ammonium heptamolybdate is an inorganic compound that serves as one of the most common and important sources of molybdenum in laboratory and industrial settings.
CAS NO.: 12054-85-2
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  • Mo 54%

  • W&Q

1. Molecular Formula: (NH4)2Mo7O24·4H2O

2. Property: Colorless or slightly green crystal, relative density is 2.498. Stable in the air, soluble in water, acid and alkali, but insoluble in ethanol.

3. Specification(%):

Mo

54min

Cu

0.0005max

Fe

0.0005max

Al

0.0005max

Si

0.0005max

K

0.01max

Na

0.001max
Ca

0.001max
Mg 0.0005max
Pb 0.0005max
W 0.01max
Mn 0.0005max
Ni 0.0005max
P 0.0005max
W.I.M 0.01max

Ammonium Heptmolybdate

Usage

Application Area Examples
Catalyst Manufacturing Key ingredient for catalysts used in petroleum refining (hydrodesulfurization), organic compound deoxygenation, and Pt-Mo fuel cell catalysts.
Analytical Chemistry Standard reagent for photometric phosphate analysis. Used in soil P-extraction methods. A 1% solution is a negative stain for TEM.
Agricultural Chemistry Source of molybdenum in liquid organomineral fertilizers to boost plant growth and nitrogen fixation.
Chemical Synthesis Calcined to produce MoO₃. Catalyzes glucose-to-mannose conversion (epimerization).


  • High Solubility & Reactivity
    It is highly soluble in water, making it an ideal, convenient source of molybdenum ions in solution for chemical reactions and processing.
  • Versatile Precursor
    It serves as the key starting material for producing molybdenum trioxide (MoO₃), various molybdate compounds, and metallic molybdenum.
  • Catalytic and Redox Activity
    The molybdenum in its structure can easily change oxidation states, which is crucial for its role in catalyzing important industrial reactions like oxidation and desulfurization.
  • High Solubility & Reactivity
    It is highly soluble in water, making it an ideal, convenient source of molybdenum ions in solution for chemical reactions and processing.
  • Versatile Precursor
    It serves as the key starting material for producing molybdenum trioxide (MoO₃), various molybdate compounds, and metallic molybdenum.
  • Catalytic and Redox Activity
    The molybdenum in its structure can easily change oxidation states, which is crucial for its role in catalyzing important industrial reactions like oxidation and desulfurization.
FAQs
  • What is it most commonly used for?
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    Its primary use is as a versatile precursor in:

    Catalyst Manufacturing: For petroleum and chemical industries.

    Material Synthesis: To produce molybdenum oxides, alloys, and nanomaterials.

    Analytical Chemistry: As a standard reagent for phosphate detection.

    Agriculture: As a source of molybdenum in fertilizers.
  • Why choose the tetrahydrate form?
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    The tetrahydrate form is often the standard commercial and laboratory form because it is stable, easy to handle, and its defined water content allows for precise weighing in reactions.
W&Q stand out as a leading supplier of Ammonium Heptamolybdate, backed by our expertise in fine chemicals and customer focus:

• We offer a full product line of cobalt, nickel, copper, fluoride, tungsten, and rare earth compounds—so you can source all your industrial chemicals from a single, reliable supplier.

• Our team includes professional technical personnel who provide tailored support, from helping you optimize rubber formulations to troubleshooting application issues.

• We adhere to the business philosophy of “breaking old rules and embracing innovation,” constantly improving our production processes to enhance product quality and reduce costs.

• We provide excellent after-sales service, ensuring you are satisfied with your order—if you have questions or concerns, our team responds promptly.

• With over 40 key products covering industry, agriculture, pharmacy, and feed sectors, we understand the unique needs of rubber manufacturers and can adapt to your specific requirements.

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