Diammonium Phosphate
DAP,diammonium hydrogen phosphate
| PROPERTIES & USAGE | ||
| Properties | Usage | |
| Chemical formula | (NH4)2HPO4 | fertilizer |
| Density | 1.619 g/cm3 | fire retardant |
| Melting point | 155 °C (311 °F; 428 K) decomposes | yeast nutrient in winemaking and mead brewing |
| Molar mass | 132.06 g/mol | |
| SPECIFICATION | ||||
| Specification | : | Fertilizer Grade | Food Grade | Technical Grade |
| Total Nutrient(N+ P2O5) | : | 64% min | 53% min | |
| Nitrogen | : | 18% min | 20.8% min | |
| Available Phosphate(P2O5) | : | 46% min | ||
| Water Soluble Phosphate | : | 41% min | ||
| Moisture | : | 1.5% max | 0.2% max | |
| Granularity(1-4mm)% | : | 90% min | ||
| Fraction of total mass of granules measuring | : | |||
| Under 1mm | : | |||
| 2mm-5mm | : | |||
| Over 6mm | : | |||
| Appearance | : | White Crystalline Powder | White Crystal | |
| Static strength of granules, MPa : | : | |||
| Colour | : | Brown | ||
| IDENTIFICATION | : | Complies | ||
| SOLUBILITY | : | Freely soluble in water | 0.1% max | |
| pH ( 1: 100 solution ) | : | 7.6 to 8.2 | 7.8 – 8.2 | |
| ASSAY | : | 96% – 102% | 98% min | |
| ARSENIC | : | 3 mg/kg Max | ||
| FLUORIDE | : | 10 mg/kg Max | 0.05% max | |
| LEAD | : | 4 mg/kg Max | ||
| Calcium (Ca) | : | 0.05% max | ||
| Pb | : | 0.05% max | ||
| As | : | 0.05% max | ||
| Hg | : | 0.05% max | ||