Monoammonium Phosphate (MAP)
CAS No.: 7722-76-1 EINECS: 231-764-5
Molecular Formula: NH4H2PO4 Molecular Weight: 115.03
Structural Formula:
Properties:
MAP is white tetragonal crystals. The density of MAP is 1.803g/cm3. Its melting point is 190ºC. MAP is easy to soluble in water, 368 g/L (20ºC).
Specification:
| Item | Index | ||
| Excellent | First-class | Qualified | |
| Main Content (NH4H2PO4) | ≥99.0% | ≥98.0% | ≥96.0% |
| Phosphorus Pentaoxide (P2O5) | ≥61.1% | ≥60.5% | ≥59.3% |
| Nitrogen (N) | ≥12.0% | ≥11.9% | ≥11.7% |
| Moisture(H2O) | ≤0.4% | ≤0.8% | ≤4.0% |
| Water Insoluble | ≤0.10% | 0.20 | - |
| pH | 4.2~4.7 | ||
Usage:
MAP is mainly used for the main ingredient of fire retarding agent of wood, forest fire extinguishing agent and dry powder fire extinguishing agent. MAP is also used for dispersant in fiber processing and dye industry, ceramic glaze, ingredient of fireproofing paint, phosphorus nutrition in yeast culture and medicinal ingredient.
MAP by wet-process phosphoric acid is mainly used in fertilizer, as the efficient compound fertilizer. MAP has good thermal stability. Heated to 100 ℃, there is only a small number of decomposition. MAP is dewatering and becomes to chain compounds like the sticky Ammonium Pyrophosphate, Ammonium Polyphosphate and Ammonium Metaphosphate at the high temperature. MAP is optimum to use ammonium phosphate during growing time of plant. It's better than Calcium Superphosphate(SSP) and Ammonium Sulfate in acid soil, superior than other fertilizer in alkaline soil.
Package and Storage:
MAP is packed in inner polyethylene bag and outer woven bag, with 25kg/bag net weight.
Stockpiled at the ventilated place, avoiding rain, moisture and insolation. Please handle with care to prevent the bag from being damaged, stored away from toxic substances.
Expiration Date: 730 days.
Key Words: Ammonium dihydrogen phosphate, Ammonium phosphate, Ammonium phosphate monobasic, Monoammonium Phosphate, MAP
