Ammonium tetramolybdate

Ammonium tetramolybdate

Diammonium tetramolybdate; Ammonium molybdate (Mo 4:13); Tetramolybdic acid, diammonium salt; Mo-4 ammonium salt

CAS 12207-64-6

Chemical Formula (NH₄)₂Mo₄O₁₃

Molecular Weight 564.8 g/mol

Ammonium tetramolybdate is a molybdenum-based compound used in catalyst preparation, metal surface treatment, and ceramic manufacturing. It is also applied in laboratory research and as a precursor in the synthesis of other molybdenum compounds.

Industrial Uses

1. Performance Chemicals

  • Precursor to Industrial Catalysts: ATM is thermally decomposed to form molybdenum trioxide (MoO₃) or directly impregnated onto supports (like alumina) to prepare hydrodesulfurization (HDS) catalysts, crucial in removing sulfur from petroleum and diesel fuels.
  • Catalyst for Oxidation Reactions: Acts as a selective oxidation catalyst in chemical processes involving aldehydes, olefins, or alcohols, facilitating the production of formaldehyde, acrolein, acrylic acid, etc.
  • Reagent for Research and Analysis: Used as a reagent in coordination chemistry and to study molybdenum’s behavior in complex formation, catalysis, and environmental testing.
  • Standard for Molybdenum Determination: Applied in chemical assays where a known molybdenum source is required for calibration and quality control.

 2. Agrochemicals

  • Micronutrient in Fertilizers: ATM serves as a water-soluble source of molybdenum, a vital trace element involved in nitrogen fixation and nitrate reduction, particularly for legumes, oilseeds, and vegetables.
  • Foliar Spray & Soil Conditioner: Incorporated in foliar nutrient solutions or soil amendment to prevent or correct molybdenum deficiencies, especially in acidic soils.

3. Metal Treatment

  • Production of Molybdenum Metal: ATM is reduced with hydrogen gas to yield pure molybdenum powder, which is essential for making high-strength alloys, electrodes, and superalloys for aerospace and military uses.
  • Alloying Additive: Molybdenum from ATM improves corrosion resistance, thermal stability, and mechanical strength in specialty steels used in tools, turbines, and structural components.

4. Paints, Coatings & Adhesives

  • Source Material for Molybdate Pigments: ATM is used to synthesize molybdate-based pigments like zinc molybdate and calcium molybdate, which act as corrosion inhibitors in protective coatings and paints.
  • Pigment Intermediate in Ceramic Glazes: Converts into molybdate colorants used in ceramic, enamel, and porcelain glazes, producing various oxide-based hues depending on the composition.

5. Water Treatment 

  • Corrosion Inhibitor Precursor: ATM is used to produce ammonium or sodium molybdate, which are applied in closed water systems, cooling towers, and heat exchangers as environmentally friendly inhibitors, replacing chromates.
  • Additive in Boiler Water Formulations: Helps prevent scaling and corrosion in steam-generating systems by forming protective molybdate films on metal surfaces.

Specifications

Assay ≥ 99.0% (as MoO₃ basis
Appearance White crystalline powder or granules
Odor Odorless
Boiling Point Decomposes before boiling
Melting Point Decomposes at ~190–200 °C
Density ~2.5 g/cm³
Solubility Soluble in water; insoluble in ethanol
Viscosity Not applicable (solid)
Flash Point Not flammable; not applicable

Hazard Symbols

Irritants/Sensitisers/Other Hazards

FAQs

1. What is the current price of Ammonium tetramolybdate in India?
The price of Ammonium tetramolybdate can vary based on factors such as purity, quantity, etc. For the most accurate and competitive pricing, please contact us at +91.6301 00 6301 directly for a customized quote tailored to your needs.

2. Where can I buy Ammonium tetramolybdate in India?
You can purchase Ammonium tetramolybdate from MULTICHEM, a leading exporter with a reputation for quality and reliability. We provide convenient options for bulk orders and direct shipments across global markets. For more details on how to place an order, please visit our website or contact our sales team.

3. What is the minimum order quantity (MOQ) for Ammonium tetramolybdate?
Our minimum order quantity (MOQ) for Ammonium tetramolybdate is designed to cater to both small-scale and large-scale needs. The MOQ depends on the packing size of the product which could range from 25 kg to 250kg.

4. How can I ensure the quality of Ammonium tetramolybdate supplied by Multichem?                   
We adhere to stringent quality control processes to ensure that our products meet the highest standards of purity and effectiveness. They undergo rigorous testing and quality checks to guarantee that they comply with industry specifications. We provide a Certificate of Analysis (CoA) with every shipment to ensure transparency and quality assurance.