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Product Details
Diammonium Phosphate (DAP)
Product: DAP; Diammonium Phosphate; Di Ammonium Phosphate; Diammonium Hydrogen Phosphate; Ammonium Phosphate Dibasic
Chemical formula: (NH4)2HPO4
Molecular weight: 132.0
Standard executed: Q/62089823-7.1-2002
CAS No.: 7783-28-0
Properties:
1. Appearance: white crystal;
2. Relative density: 1.619;
3. Melting point: 155 degree centigrade;
4. Solubility: soluble in water easily, insoluble in alcohol;
5. Turn into Monoammonium Phosphate by losing ammonium gradually when exposed in the air.
Application:
1. Technical grade: as a fire-prevention agent for fabric, timber and paper, as a high effective non-chloride N, P compound fertilizer in agriculture, it contains totally 74% fertilizer elements (N+P2O5), used as a basic raw material for N, P and K compound fertilizer;
2. Food grade: mainly used as a fermentation agent, nourishment, etc.
Packing: 25kg in plastic woven bag with polythene liner;Stored in ventilated and dry place.
| No | Specifications | Technical Grade | Food grade |
| 1 | Main content | 99.0% min. | 99.0% min. |
| 2 | P2O5 | 53.0% min. | 53.0% min. |
| 3 | Nitrogen, as N | 20.8% min. | 20.8% min. |
| 4 | pH of 1% water solution | 7.8-8.2 | 7.8-8.2 |
| 5 | Moisture | 0.15% max. | 0.15% max. |
| 6 | Heavy metal, as Pb | - | 0.001% max. |
| 7 | Arsenic, as As | - | 0.0003% max. |
| 8 | Fluoride ,as F | - | 0.002% max. |
| 9 | Water insoluble | 0.10% max. | 0.10% max. |
