آمونیوم مولیبدات
| Formula: | H2MO7N6O24*4H2O |
| Chemical formula: | (NH4)6Mo7O24*4H2O |
| Density: | 2.498 g/cm3 (20 °C) |
| Molar mass: | 1235.86 g/mol |
| Bulk density: | ~ 800 kg/m3 |
| CAS number: | 12054-85-2 |
| HS code: | 28417000 |
| EC number: | 234-722-4 |
| Storage: | Without limitations |
| SDS: | available |
| RTECS : | QA5076000 |
| Odour: | Of ammonia |
| Form: | solid |
| Color | colourless to slightly yellwoish |
| p H value | 5.3 (50 g/l 20 °C) |
| Solubility in water | 400 g/l (20 °C) |
| Solubility in ethanolinsolube | |
| Melting point | 90°C |
| Assay | 99.0 – 102.0 | % | |
| Color & Description | Conforms | ||
| Solubility | Conforms | ||
| Identication | Conforms | ||
| Chloride (Cl) | ≤ | 0.002 | % |
| Insoluble matter | ≤ | 0.005 | % |
| Nitrate | Conforms | ||
| Phosphate | ≤ | 0.0005 | % |
| Sulfate | ≤ | 0.02 | % |
| Heavy metals | ≤ | 0.001 | % |
| Potassium | ≤ | 0.005 | % |
| Sodium | ≤ | 0.005 | % |
Ammonium molybdate is a white crystalline inorganic salt widely used as a reagent in analytical chemistry and as a catalyst in industrial processes.
🏭⚗️ Production
It is typically produced by dissolving molybdenum trioxide in aqueous ammonia, followed by crystallization and drying to obtain ammonium molybdate crystals.
🔬 Properties
The chemical formula is (NH₄)₆Mo₇O₂₄·4H₂O with a molar mass of approximately 1235 g/mol. It appears as white or colorless crystals, is soluble in water, and forms mildly alkaline solutions. It is stable under normal conditions but decomposes at high temperatures.
🧪 Applications
Ammonium molybdate is used in qualitative and quantitative analysis of phosphates and other anions, as a catalyst in organic synthesis, and in pigment manufacturing. It is also employed in corrosion inhibitors and as a fertilizer additive.
⚠️ Safety
This compound is generally considered low in toxicity but may cause irritation to skin and eyes upon contact. Inhalation of dust should be avoided. Proper protective equipment like gloves and goggles is recommended during handling. Store in a cool, dry place away from incompatible substances.




