Diammonium Phosphate
Diammonium Hydrogen Phosphate, Ammonium Phosphate Dibasic
- CAS
- 7783-28-0
- EC
- 231-987-8
- Sectors
- Agriculture
Diammonium Phosphate (CAS 7783-28-0) is an ammonium phosphate salt that appears as a white crystalline powder or granule, provides nitrogen and phosphorus nutrients, and is used mainly as a primary phosphate fertilizer in agriculture and as a nutrient in yeast fermentation.
Typical Properties
| Molecular formula | H3N.1/2H3O4P |
|---|---|
| Molecular weight | 132.06 g/mol |
| Appearance | Ammonium phosphate is a white crystalline or powdery substance. |
| Form | Powder |
| Color | White |
| Odor | wh. cryst. or powd., odorless, cooling salty taste |
| Melting point | 155 °C (decomp) |
| Density | 1.619 g/cm³ |
| Water solubility | 58 g/ 100mL (10 °C) |
| pH | 7.6-8.2 (100g/l, H2O, 20°C) |
| GHS signal word | Warning · Irritant / harmful |
| HS code | 31053000 |
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.
Diammonium Phosphate
Applications
Used in agriculture as a primary phosphate fertilizer and in yeast fermentation as a nutrient. Industrial uses include flame retardant coatings and corrosion inhibitors.
Safety & Risks
Low toxicity; decomposes upon heating to release ammonia. Avoid contact with acids and moisture.
Packaging
Supplied in 25–50 kg woven bags or bulk containers. Store dry and sealed, away from incompatible substances.