Ammonium Heptamolybdate
Hexaammonium Molybdate
- CAS
- 12054-85-2
- EC
- 618-411-4
- Sectors
- Water & Wastewater Treatment, Home Care & Industrial Cleaning, Agriculture
Ammonium Heptamolybdate (CAS 12054-85-2) is a white to yellow-green crystalline powder, an inorganic molybdate salt that serves as a readily water-soluble source of molybdenum ions for catalyst production, corrosion inhibition in cooling water systems and fertilizer micronutrients.
Typical Properties
| Molecular formula | H4N.2/3H2O.1/6Mo7O24 |
|---|---|
| Molecular weight | 268.08 g/mol |
| Appearance | white crystalline powder |
| Form | Solid |
| Color | White to yellow-green |
| Odor | Odorless |
| Melting point | ~400 °C (decomp) (approx) |
| Boiling point | 190°C |
| Density | 2.50 g/cm³ |
| Water solubility | 400 g/L (20 °C) |
| pH | 4.0-5.5 (25°C, 0.05M in H2O) |
| HS code | 28417000 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Ammonium Heptamolybdate
Applications
Used in catalyst manufacturing for petroleum refining, pigment formulations, ceramics, and glass. It also functions as a corrosion inhibitor in cooling water systems and as a micronutrient in fertilizers. In analytical chemistry, it serves as a reagent for phosphate and lead determination.
Safety & Risks
Low acute toxicity but may cause irritation to eyes and respiratory tract. Avoid generation of airborne dust and direct skin contact. Environmental discharge should be minimized due to metal ion content.
Packaging
25 kg PE-lined fiber drums or kraft bags. Store sealed, cool, and dry, protected from moisture and acids.