Executive Standard：HG-T4132-2010
Chemical Formula：NH4H2PO4
CAS NO.: 7783-28-0
HS Code:310510090
| NO. | Items | Standard | Internal Standards |
| 1 | Appearance | White crystal | White crystal |
| 2 | Main Content（NH4 H2PO4）%≥ | 98.5 | 99.0 |
| 3 | Phosphorus Pentoxide (P2O5 ) % ≥ | 51.8 | 53.0 |
| 4 | Nitrogen (N) %≥ | 20.0 | 21.0 |
| 5 | PH（1%Water Solution） | 7.8-8.2 | 7.8-8.2 |
| 6 | Arsenic (As)% ≤ | 0.01 | ＜0.005 |
| 7 | Heavy Metals (Pb) %≤ | 0.005 | ＜0.005 |
| 8 | Chloride（Cl- ）% ≤ | 0.002 | ＜0.0005 |
| 9 | Fluoride(F) % ≤ | 0.005 | ＜0.0005 |
| 10 | Sulphate( SO4) % ≤ | 0.005 | ＜0.001 |
| 11 | Water Insoluble % ≤ | 0.1 | 0.1 |
| 12 | Moisture % ≤ | 0.2 | 0.2 |
Benefits of Hua Rong Chem’s Diammonium Phosphate DAP 21-53-0
1. White or colorless crystalline fertilizer.
2. Using PA85% (Hot Process) and liquid Ammonia as raw materials to produce DAP.
3. Fully soluble in water, easy absorbing, high efficiency ,free of CL&Hormones.
4. Suitable for all crops, contains high concentration of both phosphorus and nitrogen.
5. Suitable for foliar spray, drip, and sprinkler irrigation systems.
6. It is essential for seed germination and root development, at flowering and seed formation.
7. Boosts rooting and improves flowering.
8. Increases tillering in grain crops and increases yield and quality.
9. Enhances the ability of drought , cold, disease and flood resistance.
