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（NH4H2PO4）% ≥ | 98.0 | 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 metal ( 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 |
Application Field :
Diammonium Phosphate is used in wood, paper and fabric as waterproof agent, as fire retardant paint additive, dry powder extinguishing agent, new energy lithium battery, etc.
