Ammonium Sulfate
- CAS
- 7783-20-2
- EC
- 231-984-1
- Sectors
- Agriculture, Water & Wastewater Treatment, Food & Nutrition
Ammonium Sulfate (CAS 7783-20-2) is a white crystalline inorganic salt that supplies nitrogen and sulfur in a stable, easy-to-handle solid form, and it is used mainly as a crop fertilizer, in water and wastewater treatment, and as a processing aid in food operations where permitted. It provides a reliable source of nitrogen and sulfur and is valued for its stability, high purity and ease of handling in large scale operations.
Typical Properties
| Molecular formula | H3N.1/2H2O4S |
|---|---|
| Molecular weight | 132.14 g/mol |
| Appearance | White crystalline powder |
| Form | Solid |
| Color | Yellow to orange |
| Odor | Slight odor of ammonia |
| Melting point | >280 °C |
| Density | 1.769 g/cm³ @ Temp: 50 °C |
| Water solubility | 77 g/100 mL (25 °C) |
| Flash point | 26 °C |
| pH | 5.0-6.0 (25°C, 1M in H2O) |
| HS code | 31022100 |
| 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 Sulfate
Applications
Used as a fertiliser to supply essential nutrients to crops. Applied in water treatment processes and in chemical manufacturing. Used in food processing as a processing aid where permitted. Also utilised in fermentation, pharmaceuticals and laboratory applications.
Safety & Risks
Low toxicity but dust may irritate eyes and respiratory system. Use PPE and good ventilation during handling.
Packaging
Supplied in 25 kilogram bags or bulk big bags. Store in dry conditions to prevent caking.