Ammonium dimolybdate

Ammonium dimolybdate

Dimolybdic acid diammonium salt; Ammonium molybdate (MoO₃ basis); Diammonium dimolybdate; Ammonium molybdenum oxide

CAS 27546-07-2

Chemical Formula (NH₄)₂Mo₂O₇

Molecular Weight 241.9 g/mol

Ammonium dimolybdate is a chemical compound commonly used in the preparation of molybdenum-based catalysts, pigments, and corrosion inhibitors. It also finds applications in ceramics, metallurgy, and as a reagent in laboratory and industrial processes.

Industrial Uses

1. Performance Chemicals

  • Precursor for Hydrodesulfurization Catalysts: ADM is thermally decomposed to molybdenum trioxide (MoO₃), which is then used to prepare Co-Mo or Ni-Mo catalysts for removing sulfur from petroleum during refining processes.
  • Catalyst for Oxidation and Polymerization Reactions: Acts as a heterogeneous catalyst precursor for industrial oxidation of alcohols, aldehydes, and olefins, as well as for polymerization reactions in petroPerformance Chemicals.
  • Reagent for Molybdate-Based Tests: ADM is used in analytical chemistry for colorimetric determination of phosphates and silicates, where it forms molybdenum blue complexes.
  • Research on Molybdenum Complexes: Acts as a starting material in synthesis of molybdenum-based coordination compounds in research and development labs.

2. Agrochemicals

  • Micronutrient in Fertilizers: Supplies molybdenum, an essential trace element for crops, especially legumes, aiding in nitrogen fixation and enzyme activation (e.g., nitrate reductase).
  • Seed Treatment and Foliar Spray Component: Used in seed coating formulations or foliar sprays to correct molybdenum deficiency in soil, promoting improved germination and plant health.

3. Metal Treatment

  • Source Material for Molybdenum Metal: ADM is reduced via hydrogen or carbon to produce molybdenum metal powder, used in alloy steel, superalloys, and metal processing applications.
  • Additive in High-Performance Alloys: It contributes molybdenum to enhance hardness, corrosion resistance, and thermal strength in aerospace, nuclear, and tool steels.

4. Paints, Coatings & Adhesives

  • Intermediate in Molybdate Pigment Manufacturing: ADM is converted to sodium or zinc molybdate, which are then used as corrosion-inhibiting pigments in industrial coatings, especially in marine and heavy-duty applications.
  • Precursor for Molybdate Orange Pigments: ADM is used in combination with lead chromate to form molybdate orange pigments, which are valued for their brightness and UV stability in coatings.

Specifications

Assay ≥ 99.0% (MoO₃ basis, typical analytical grade)
Appearance White to yellowish crystalline powder
Odor Odorless
Boiling Point Decomposes before boiling
Melting Point Decomposes at ~190 °C
Density ~2.5 g/cm³
Solubility Soluble in water; insoluble in alcohol
Viscosity Not applicable (solid)
Flash Point Not flammable; not applicable for inorganic salts

Hazard Symbols

Irritants/Sensitisers/Other Hazards

FAQs

1. What is the current price of Ammonium dimolybdate in India?
The price Ammonium dimolybdate 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 dimolybdate in India?
You can purchase Ammonium dimolybdate 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 dimolybdate?
Our minimum order quantity (MOQ) Ammonium dimolybdate 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 dimolybdate 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.